Deco&Design - Miscellaneous - Crafting ideas

Epoxy resin: what it is, uses, tips for perfect results

Since the article about wood and epoxy resin I get questions about these resins all the time. And Marian Moise's article on bar top made of ash, beer caps and epoxy resins has brought inspiration to those who want to work with epoxy resin. So I thought an article telling more about these resins would be useful. Because epoxy resins can be for wood, self-levelling epoxy flooring, concrete cracking, adhesives and epoxy paints. Let's see how we can manage between so many types of epoxy resins.

What are epoxy resins

A very wide range of industrial products are found under the name of epoxy resins. There are clear or coloured, single or two-component, liquid or solid resins. They can be very different from each other, but they share reactive groups called epoxy groups that react with each other or with other reactive groups. Depending on the number of epoxy groups and the groups with which they can react (the hardener used) the properties of the resulting material can be very different.

I don't think I need to go into chemical explanations because that would more confuse you. At one point I explainedthe role of the hardener to obtain a lacquer film with superior properties and many people were keen to tell me how helpful the explanation was. I will try to make it as simple as possible to understand. Imagine a group of people dressed in white sitting next to each other. They are easy to separate, aren't they? But if they hold hands they will be harder to separate, but the image will remain monochrome. They can, however, get caught with people in another group dressed in green. Another hard-to-separate, but two-coloured formation will result, looking different from the first.

So with resins. There may be several possible binding possibilities and several substances with which they can bind. It is from the bonding of reactive groups with other groups that the special properties of resins derive, and from the possibility of bonding with different groups that their diversity arises. It should be noted that unbound - unstrengthened - epoxy resins have very weak properties.

epoxy resin
photo source: creativita.info

Uses of epoxy resins

The chemical reactions that the various types of resins have with hardeners result in products with very good adhesive properties, or very good chemical or high temperature resistance, special electrical insulators or materials with special mechanical properties. As I said, epoxy resins are not the only resins that, together with wood, form unique-looking table tops.

The areas in which epoxy resins are used are many:

  • metal coating
  • electronics and electrical engineering
  • manufacture of paints and adhesives
  • obtaining plastics with special properties
  • in construction

Epoxy paints are used indoors because outdoors they are sensitive to UV radiation (they look chalky). But they are very good as a primer, being corrosion resistant and very good protectors against water and humidity. This is why they are used as a primer in the automotive industry or in shipbuilding.

Epoxy adhesives are very strong and are used in a wide range of applications: aircraft, cars, bicycles. They can bond wood, metal, glass, stone and some plastics. That's why when making the frame to pour a resin you have to bear in mind that there are few materials that it doesn't stick to very well.

The most spectacular uses of epoxy resins are in flooring or in combination with wood and/or other materials. They also do a good job in construction, so let's take them one at a time.

Epoxy resin in epoxy flooring

It is the best known and most widely used of the resin-based floors. It is very strong and durable and can be used in industrial and commercial premises with heavy traffic, not only pedestrian but also car traffic.

Because it is known as one of the most hygienic floors (it cleans very well and easily) there was a time when all food factories, carpentries, warehouses, hospitals, pharmacies were obliged to have such floors. I don't know if this requirement still applies.

Due to the highly advanced cross-linking, the epoxy floor is very resistant and clings very well to the concrete layer, protecting it against impact, abrasion or the action of water and chemical agents.

epoxy resin
photo source: cobblecrete.com.au

The application is done by casting - it is also called self-levelling floor - resulting in a very straight surface. It takes longer to fully cure than other resin-based floors (7-10 days compared to 5 days for polyurethane), but it is also much stronger and has very good dimensional stability. It can be used without problems in places where trucks, forklift trucks or other such machinery are frequently used. The disadvantage is that, if damaged, the chances of repair are very low and total replacement is recommended.

Epoxy flooring can also be used in living spaces, and the effects obtained are among the most diverse and spectacular. You can achieve metallic, marble, depth, flowing water and even ocean effects. For living spaces, there is the option of casting, resulting in floors thicker than 2 mm, or troweling, with a layer thickness of less than 1 mm. The thicker ones are much more durable.

epoxy resin
photo source: decorunits.com

Epoxy resin used in construction

Epoxy resin is used to repair cracks or fissures in concrete. It adheres very well and the repair is very durable. It can be used for both civil and industrial building repairs.

Resin is applied in cracks by casting or injection. Before application, the cracks must be cleaned and degreased to ensure the best possible adhesion.

As it is highly compatible with concrete, it can also be used to cover it to protect it from water infiltration or abrasion. It covers the surface of concrete very well, naturally filling any voids or imperfections. After curing, it forms a common body with the concrete without the risk of detachment.

epoxy resin
photo source: resincoat.co.uk
epoxy resin
photo source: directwaterproofing.ca

Use of epoxy resin in combination with wood

In the article "Wood and epoxy resins" I showed how to work with transparent resins and a practical method for removing embedded air. The resins used for wood are clear, hardening resins. They can be coloured with iron oxide pigments. The same resins can also be used for jewellery.

It is very important to choose the material for the moulding frame, because we have seen that resin is also a very good adhesive for materials such as metal, glass, wood or some plastics. A polypropylene frame will not react with resin.

In order not to leave bubbles in the film the resin must be allowed to dry out after mixing. Pouring should be done as slowly as possible so as not to entrap air. The surface is then heated with a torch until the bubbles are completely removed. It is also recommended to apply successive thin coats (1 cm). A special spiked tool is also available for removing bubbles, usually used for decorative floors.

If there are surface imperfections (dust inclusions) the surface can be sanded with a very fine abrasive sponge, after which a thin coat of resin is applied with a brush. The surface will regain its shine.

It is recommended that objects embedded in resin should not be wet.

epoxy resin
photo source: dezeen.com

 

Where to find epoxy resin

A lot can be said about resins so I'll come back to it. I am also waiting for questions from you to make the article as useful as possible. Even if I don't know the answer I promise I'll look into it so the article contains it.

You can find these resins in specialist shops, DIY stores, online shops or from manufacturers. There are many places where they can be found, the important thing is to know what to ask for.

And for floors, the offer is large. A simple web search on the subject of "epoxy flooring" will give you plenty of options. They can be bought in DIY or specialist shops, but it is better to ask the specialists.

epoxy resin
photo source: resincoat.co.uk

 

About the author

Mihaela Radu

Mihaela Radu is a chemical engineer but has a great passion for wood. She has been working in the field for more than 20 years, wood finishing being what defined her during this period. She gained experience working in a research institute, in her own company, as well as in a multinational. She wants to continuously share her experience with those who have the same passion - and more.

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  • Hello
    Do you think we could use epoxy resins on some walnut planks? We would like to make some window sills and a table.I think the biggest challenge is the table because if we put two planks next to each other, what do we put underneath so that the resin doesn't run through the spaces between the planks.Can you give us some advice? Where can I find resin, considering that we are from Sibiu.What is the need of resin?Thank you.

  • Hello. I am a beginner, never worked with epoxy resin, and I am interested in some details if possible. First of all, what is the resin that can be used for table tops and what is the ratio of resin to hardener?
    I am from Suceava, where can I find resin?
    I tried some but it hardened very quickly (30 min), and a lot of air bubbles came out.
    If you have any other useful tips, please help me if you can.
    Thank you. Respectfully!

    • Hello.
      1. You must use wood resin or clear resin. The mixing ratio resin:inariotr differs depending on the manufacturer and the final properties of the hardened resin. Maybe 1:1, 1:2 or others. There are manufacturers who sell resin together with catalyst as one product, the quantities representing the mixing ratio.
      2. The easiest way is to search the web. There are many possibilities to buy online. You can also find them at DIY stores such as Dedeman, Hornbach, BricoDepo, Praktiker, etc.
      3. Maybe it was for another purpose. There are several types of resin. Make smaller quantities and do not pour the whole quantity at once. Pour thinner layers and wait for the bubbles to come out. Help the bubbles come out with a flame (a torch like the one you use to light the stove). After the bubbles come out, pour another thin layer and so on.
      In the link below you will find more information.
      All the best!
      https://revistadinlemn.ro/2017/06/07/combinarea-lemnului-cu-rasina-epoxidica/

      Don't forget to subscribe to the printed Wood Magazine! For only 58 lei/year you can find out news in the field, discover craft ideas or trade secrets. We remind you that the content in the printed magazine is different from the one on the website. Details in the link below. 
      Thank you!https://revistadinlemn.ro/product/abonament-revista-din-lemn/

  • Hello.
    I have a wooden cabin and in the bathroom I would like to put resin over the OSB that covers the beams.
    Do you think water could seep in and affect the structure of the cabin?
    Thank you.

    • Epoxy resin insulates well. As you have seen in the article it is used for flooring. But it also depends on how well it is applied, how it is mixed with the hardener (so that the layer does not crack), the type of resin, etc. I understand that over the board that covers the beams will come the finishes intended for the bathroom (tiles or other). In my opinion it is important how this work is done so that water does not reach the OSB.
      All the best!

      Don't forget to subscribe to the printed Wood Magazine! For only 58 lei/year you can find out news in the field, discover craft ideas or trade secrets. We remind you that the content in the printed magazine is different from the one on the website. Details in the link below. 
      Thank you!https://revistadinlemn.ro/product/abonament-revista-din-lemn/

  • I have an uncovered concrete terrace I would like to finish but not with tiles
    Could I put some epoxy (screed, resin, paint)?

    • Hello.
      We are specialists in wood and it is difficult for us to comment in areas where we have no expertise. From the documentation done for epoxy resin I can tell you that the transparent one is not really used outside because it turns yellow under the action of the sun and loses its properties. There is an epoxy varnish (this is the cheaper version) that is applied to concrete to prevent it from grinding. There are also combinations of epoxy resin and quart (the expensive version) that are applied to the exterior areas.
      I hope you found it useful.
      All the best!

      Don't forget to subscribe to the printed Wood Magazine! For only 58 lei/year you can find out news in the field, discover craft ideas or trade secrets. We remind you that the content in the printed magazine is different from the one on the website. Details in the link below. 
      Thank you!https://revistadinlemn.ro/product/abonament-revista-din-lemn/

  • Hello,

    You have been a great help to me in choosing the flooring with the lowest formaldehyde emissions - thank you again and I hope you can also help me in choosing a safe adhesive for our health.
    We have underfloor heating throughout the house and we will install the flooring by gluing with suitable adhesive.
    I have been looking for an environmentally friendly adhesive as an alternative to the adhesive proposed by the installation company and have read the Safety Data Sheets of both products, to understand what they contain and whether those materials are safe in the long term for health (whether there is a risk of organic emissions into the air, etc.).

    1. Ecological adhesive - Slc Eco L34 Plus (Kerakoll) is a two-component adhesive, with part A: epoxy resin (also contains bisphenol-A) and part B: "quenchant" i.e. 2,4,6-tris(dimethylaminomethyl)phenol.

    2. The adhesive proposed by the installation company - Bona R848T is a one-component adhesive based on trimethoxyvinylsilane.

    I looked at the 'stability and reactivity' category to see if, over time, due to underfloor heating there is a risk that certain compounds in the adhesive may break down and be inhaled:
    - environmentally friendly adhesive - it mentions 'no dangerous reactions known' & 'no dangerous decomposition products known"
    - Bona R848T adhesive - it mentions 'under normal conditions of storage and use, hazardous reactions will not occur' & 'under normal conditions of storage and use, hazardous decomposition products should not be produced'.

    Thank you again for your advice!

    • Hello.
      From what you tell me the safest one seems to be the environmentally friendly one. One argument in its favour is that it is bicomponent. In these cases the resulting product after completion of the reaction between the 2 components is very stable and chemically inert.
      But Bona adhesives are good too, and Bona specialises in parquet and products for finishing and gluing parquet. If they ensure you won't have emissions using their products (considering the heating is underfloor) you should be fine. It is to find out what happens if you go out of normal conditions and what those normal conditions are. For example, if the temperature rises higher (a system failure) what can happen? I say this as it is generally good to have the whole system from one supplier. That way they will take responsibility for the work and, in case of problems, you won't be able to say that the product from the competitor is to blame.
      The decision is still yours. 🙂
      All the best!

  • Good evening,
    I applied a self-levelling epoxy floor which came out beautifully,over it I glued a 3d wallpaper and over it I gave a coat of epoxy sealing varnish.The varnish did not come out perfectly on the surface,there are some spots if I can call them that.The curing time of the epoxy sealing varnish is 30 minutes.so it has to be worked quickly.I laid with varnish according to the technical data sheet,where did I go wrong that it did not come out perfectly?

    • Hello.
      I don't think you did anything wrong. It's possible that the top coat has trapped a speck of dust or air bubbles. You should sand the surface with a very fine abrasive, then use a rag soaked in resin to remove the whitish Iptafos) appearance left after sanding.
      All the best!

  • Hello I have been following the magazine for some time and in many areas you have been helpful.
    I paint with acrylic on wooden boards and finally around the painted area remains a matte finished wooden passe-partout.
    I would like to use a thin layer of epoxy resin over the painted area and leave the passse-partout area matte without resin, how to solve the separation?
    Should I use a masking tape? but the resin would stick to the tape.
    Should I just carefully brush it on so I don't go over into the dropped rectangle or do you think without a resin edge it will stretch?
    Thank you.

    • Hello.
      You should mark off the area with a very smooth plastic strip. Polyethylene or polypropylene are inert substances that do not react with epoxy resin. I don't know if such strips are commercially available, but you can cut them out, for example, from document trays or other such products. Remember, in order not to get caught, the surface must be perfectly straight, with no curls or patterns.
      Resin can also be applied with a brush, but it looks best poured on, even if the layer is thin.
      If you still want to apply with a brush, put paper tape all around (available in DIY stores). It comes off easily and leaves no marks. It will prevent the resin from spreading.
      All the best!

  • Hello,
    Thank you for the interesting article!
    I also read the comments and saw that you do not recommend epoxy resin for outdoor use. Is there however a uv and weather resistant version? We would like to apply to some exterior doors, like a paint or varnish.
    Thank you!

    • Hello.
      Thank you for your appreciation.
      Epoxy resin is not outdoor resistant. But there are other products that resist better and are transparent. There are outdoor varnishes that you can find in the shops. But you should know that very transparent products, similar to epoxy resin, have low outdoor resistance. The more opaque they are, the better they resist. The most resistant are paints (for exteriors).
      All the best!

  • Hello

    I have no dilemma and no business with wood, I just want to congratulate you for the patience and professionalism with which you answer your readers' questions. Much appreciated.

    Dan

  • Can I mix exterior colourless epoxy resin with sawdust to grout some spaces between wooden beams on a plastered wall?

  • Hello
    I'd like to make a resin countertop to put Coke caps in.
    Could you help me how to proceed
    It's for me at home

  • Hello,

    Congratulations on the article and the ideas generated. My boyfriend wants to make a kitchen countertop out of some beautifully decorated woodchips, covered with leaves of the fall season. I keep reading that this resin is resistant to many things, but if I put a hot pot on the resin-covered countertop....when I take it off, does the resin go to the bottom of the pot and the resin???? It's still resin and I'm not sure what temperature it can withstand. Thank you in advance!

    • Hello!
      Thanks for your appreciation!
      Don't leave. Once hardened (a catalyst is added to the resin) the resin is strong, it is not like a plastic that immediately softens. There are several types of resin that have temperature resistance between 150 grd.C and over 600 grd.C. To have a higher resistance to abrasion, scratching, very high temperatures, a layer of polyurethane varnish can be applied to the kitchen countertop. Before application you must sand the surface of the worktop so that the polyurethane varnish has adhesion.
      All the best!

        • Good evening!
          Chemically it is an organic product. It is a synthetic resin that becomes solid following a polymerisation reaction triggered when the liquid resin is mixed with the catalyst (hardener).
          All the best!

  • Hello! Please if you can help me with some advice. Can epoxy paint be applied on tiles inside? We want to renovate a little in the house and we would not want to remove the tiles because they are in good condition, just to change the color. Thank you very much!

    • Hello!
      Can also be applied over tiles. Pour over it to cover it completely. You have to use floor resin which is much harder. It is different from the resins used for furniture. Before pouring resin mixed with hardener, the tiles must be washed and degreased.
      All the best!

  • Good evening
    I really appreciate all your hard work and commitment, you are doing a great job! I'm at the level of before beginner in what resin is, I've never worked with it before but I have an idea I want to implement. I want to encase in a countertop, somewhere around 270 pieces of metal, they are 40×40 mm in size and 20 mm high. The questions are as follows:
    1. Can I encase them with clear resin but with nothing underneath, the backing top, after peeling off just the clear top with the pieces left in it?
    2. To cover the pieces a minimum layer thickness of 20 mm is required, taking into account the weight of the metal (50-60 kg), is there no risk of breakage when handling the countertop?
    3. After casting, stripping, does the surface need to be polished and varnished?
    4. Do the metal pieces need to be cleaned, coated?
    5. What type/model of resin do you recommend for this coating?
    Thank you very much for your time!

    • Hello!
      Thanks for your appreciation!
      1. The countertop may remain without any support. There are such table tops made only of resin and embedded materials.
      2. Resin countertops are pretty tough, but don't rely on that. Always support it at the centre when handling it and mount it with centre support. Being very heavy, even if it doesn't break, it will sag.
      3. To obtain a nice shine and appearance, sanding should be done with fine sandpaper or abrasive paste. If paper is used, remove the whitish appearance by applying resin with a soft cloth. For a better temperature resistance on the upper side, polyurethane varnish can be applied.
      4. You have to fit them the way you want them to stay. They will be totally airtight and will not rust or be otherwise damaged. They must not be wet or dusty.
      5. In the article there is a link to a resin manufacturer that also sells online.
      All the best!

      You can also find out more about your favourite topics in printed magazines. You can still subscribe to receive magazines published in 2019 by clicking on the link below.
      Thank you!
      https://revistadinlemn.ro/product/abonament-2019/

    • Hello!
      It depends on why the viscosity increased. If it has been sitting at low temperature, then it is enough to keep it a few hours at room temperature and the resin returns to its original thickness. But if it is old, has been left uncovered for a long time, has come into contact with a small amount of hardener, polymerisation has occurred and is irreversible. This means that the resin can no longer be used.
      All the best!

  • Hello,
    We are faced with the challenge of furnishing our home and thought we would start with a small, secondary bathroom.
    I would like to get out of the box a bit and, in my search for interesting solutions, I discovered this wonderful article, followed by the advice in the comments, for which I am more than grateful.
    I also dare to ask your advice about my idea.
    The bathroom is probably no more than 4 sqm, of which 1.5-2 sqm will be reserved for the shower + a small storage space, here the floor will definitely be tiled (or travertine, I haven't decided yet).
    For the rest of the room I thought it might be interesting to put instead of tiles osb tiles - in natural color or possibly to paint it with white, for more brightness - and over the osb tile to apply transparent epoxy resin, or to lacquer it. But I don't know if OSB is suitable for this role and if it can be combined with resin and if so, how complicated it is.
    If time allows you to help me with some advice, I would be very happy.
    Thank you!

    • Hello!
      OSB is not moisture resistant. It should be very well insulated and coated with epoxy resin to avoid problems. Resin can be poured over the OSB. You should use floor resin and the OSB, as I said, should be very well coated.
      My opinion is that unless you have someone who can do the insulation and resin casting very well, the idea is risky.
      All the best!

  • Hello.A question please..I am making resin marzipan...something went wrong with the last moulds and they are not drying as well as the resin.Is there any way to make them harden or can I throw them away,not to wait for them.Thank you.

  • Hello, do you think I could make an epoxy resin sink? I don't know if it withstands heavy water use and if it deteriorates due to water, like matting

  • Hello.
    I poured a coffee table made of epoxy resin, 4 cm thick, with a percentage of 1;2.
    It was poured in two layers at 48-36 hour intervals. The next layer was poured at a rate of 1;3.
    The problem is that the last layer doesn't harden even after 10 days of pouring.
    Is there a solution for its reinforcement?
    Thank you.

    • Hello!
      Something you did wrong though, because if the other 2 coats are hardened it is not a problem of resin or hardener quality. If the ratio is 1 part hardener to 3 parts resin and it hasn't hardened it means there is too little hardener. You should have respected the proportion from the beginning (1 part hardener and 2 parts resin). Unfortunately you can't put hardener on top of the applied layer to harden it because it will crack. The only solution is to remove the soft coat (thinner, sanding), wipe the surface well with thinner and apply again respecting the hardening of 50%.
      All the best!

  • Hello, I want to make two small wooden tables and I wasn't planning to use resin but they have cracked from the heat in the meantime and I would like to fill that small crack (about two fingers long and wide) with resin and maybe give it a coat of resin on the whole table and on the sides. Any tips on the way forward? I'm not sure what I should do at the end after it's dry and the pattern that would be best resin +hardener. Thank you!

  • Hello, I recently purchased 6kg of i4 expodifica resin, I am a beginner and I would like to know how much hardener I can put to 3kg of resin?thank you!

    • Hello!
      I'm sorry, but I don't know I4 resin. I would need more information to identify it,
      Epoxy resin comes in several types and generally the manufacturer recommends the hardener to use and the amount to add. It can be added in the proportion of 50%, 100% or less.
      Normally you should be able to find the instructions for use on the label or in the technical data sheet of the product (some of them are also published on the web).
      All the best!

    • Hello!
      If the tiles are not shiny and have roughness, yes, they have adhesion.
      If you want to pour epoxy flooring over tiles, you can, but you need to talk to a specialist firm about using the right resins.
      All the best!

  • Hello, I am just starting out and need a little help if I may, after I finish casting the resin it dries and I sand it do I need to give it some particular product to give it gloss and clarity or?

    • Hello!
      In order to have a glossy surface, the surface must be polished. Polishing is done with polishing pads and polishing solutions with grits from 1000 to 3000, even 5000.
      In order to have clarity in depth, it must be poured slowly and the bubbles inside must be eliminated.
      All the best!

    • Hello!
      Are you sure you only cleaned it with water? Wasn't there also some more abrasive cleaner, or metal sponge?
      It's hard to believe that the tray has whitened just from washing with water.
      It could be a tray that has had nitro varnish applied and left wet for a long time or scratched by cleaning products.
      Whatever the reason, it should be sanded with fine sandpaper (800 and 1000), then polished with abrasive paste with a grain size of 3000 and above. In addition to sandpaper, you will need a drill and felt rollers.
      Good luck!

      • Hello,

        I have a question that is not related to what I read above.

        Refers to Glosscoat epoxy resin.

        I want to use such a resin because I have seen that it can be brushed on.

        My question is whether I can brush it on glass (e.g. a jar), on which I have glued some semi-precious stones. Some of these stones are first glued onto a plastic sticker which is then glued onto the glass.
        I need to wrap this decorative object in something that will make it durable and I thought I could use this resin.
        If I can't complete my artwork with this resin :)), then what could I use? Something that can be brushed, anyway.

        Thank you in advance for your help.

        GE

        • Hello!
          From what I saw in the product presentation on the website, it can also be applied to this decorated jar.
          In my opinion, you can use any kind of varnish to protect your work. The only problem may be the adhesion of the varnish on the plastic without stones. Otherwise, the stones create the roughness needed for the varnish to adhere. A water-based varnish I think would be best because it is not very yellowish. That yellowish colour, which is typical of varnishes, is much toned down.
          Good luck!

          • Hello,

            Thank you very much for your advice.
            I had started searching the web for alternatives to resins. I found a varnish called SOLL Clear Spray Varnish with high gloss and corrosion protection.
            I'm thinking of trying it. Maybe I can get two coats to make the protective surface thicker.
            I'll keep you posted on what I get.
            Perhaps you have already heard of such a lake?

            All the best,
            GE

  • Hello!

    Can you help me with some advice on the right resin for some acrylic painted surfaces? I am looking for a brushable resin as I want to apply it to slightly curved surfaces.

    The parts in question are some interior car trims.

    I'm interested in getting a coating that is scratch and wear resistant enough, while being gloss/perfectly transparent.

    Thank you!

    • Hello!
      If you want to achieve scratch and wear resistance, the best solution would be a floor varnish. You can use a water-based glossy floor varnish that you apply with a brush. For adhesion you will need to lightly sand the acrylic paint with 400 grit sandpaper (no smaller because you can see the curls from sanding through the gloss varnish) or with a fine sanding sponge.
      You can also use solvent-based floor varnish because almost any kind of varnish can be applied over acrylic paint. It is best to test the compatibility beforehand, on a more hidden area. Nowadays manufacturers use resin mixtures and it is better to make sure you won't have any problems.
      Good luck!

  • Hello,

    I make some composite materials from epoxy resin and fibres. My question would be if you know of a cleaning solution for semi-hardened resin utensils?
    Thank you!!!

    • Hello!
      If universal thinner doesn't work try paint strippers. These are solutions based on methylene chloride and are quite aggressive. Decanol, from Policolor, but there are other companies that have paint strippers.
      All the best!

    • Hello!
      It is not recommended to apply resin over oiled wood because it has no adhesion. Even if the tung oil makes a film, it takes a long time to dry completely and there is a danger that the resin will peel off even after a few weeks.
      I have seen that some epoxy resin manufacturers recommend in this case to apply a coat of oil-based polyurethane varnish over the dried and sanded tung oil. This acts as an insulator. Then a thin layer of resin is applied with a brush and after it hardens, the epoxy resin is poured on. This way the resin will adhere and no bubbles will appear on the inside due to drying of the lower layers.
      All the best!

  • Good evening. I have cast oak stairs and resin but I don't know what to polish with. I have sanded the surface and don't know what to do next.

  • Hello
    I would like to know if resin can be used on plastic surfaces. I would like to reinforce the bottom of a boat made of plastic.

  • Hello. If a hot pot is placed on a wooden table where epoxy resin has been used in combination, the resin will melt, i.e. the surface of the table will be damaged, or will it resist the heat emitted by the pot just like the wood?

    • Hello!
      Depends on the resin used. Epoxy resins come in several types, some with very good resistance to high temperatures.
      However, the resins used for furniture are thermoplastic and do not have very high temperature resistance. It doesn't mean it melts and runs out from under the hot pot but it loses its strength. Often they are coated with polyurethane varnish to increase their strength.
      Find more information about resins in the attached link.
      All the best!
      https://revistadinlemn.ro/2017/06/07/combinarea-lemnului-cu-rasina-epoxidica/

  • Hello and thanks for the information shared!
    I would like to make a walnut table top and have a few questions that I think you would have the answer to.

    1. Does the wood have to be dry to be embedded in resin?
    2. Does the natural bark of the walnut need to be removed beforehand?
    3. Are there naturally grown green mosses on the bark of the tree, do they have to be removed or can they be left on the surface?
    4. I have seen that you can put flowers in resin but for example the tulip has crispy stem and leaves and when it dries, the petals fall off easily and I am curious if you can put such flowers.

    Thank you and I appreciate it!

    • Hello!
      Thank you for following us!
      1. If it is totally embedded in resin, without any contact with the outside, it can also be left uncoated.
      2. Likewise, if it is totally recessed, you don't have to because it locks in well and any insects get stuck inside and die.
      3. Can be left.
      4. Very carefully, pouring the resin gently so as not to damage the dry plant.
      Use clear epoxy resin for this type of work, not floor or concrete resins.
      Good luck!

  • I started to make a product from epoxy resin, I recently made an ashtray and there must have been air in it, because it is visible in the form of bubbles, tell me how to remove the excess air from the product or tell me how to expel it at the stage where it has not yet hardened.

  • Good evening! I made a picture with an ultrasound in it, but a week has passed and the picture is gone. What did I do wrong? Should the picture be laminated before applying resin over it? Thank you!

    • Hello!
      I can't give you an exact answer because I don't know the composition of such an ultrasound. From what I've seen, the ultrasound appears to be coated with a thin emulsion that probably has no resistance to one of the components (resin, hardener or the solvent in which the resin is dissolved). Plasticised ultrasound is much more likely to resist because the plastic used is more inert, more resistant to solvents or more aggressive reactions.

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