Resin is a thick fiberglass liquid that when mixed with 2 percent catalyst becomes a solid. Polyester
Polyester
Polyester is a category of polymers that contain the ester functional group in their main chain. As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). Polyesters include naturally occurring chemicals, such as in the cutin of plant cuticles, as well as s…
Acetone
Acetone, or propanone, is the organic compound with the formula₂CO. It is a colorless, volatile, flammable liquid and is the simplest and smallest ketone. Acetone is miscible with water and serves as an important solvent in its own right, typically for cleaning purposes in laboratories. About 6.7 …
How to thin polyester fiberglass resin with acetone?
How to Thin Polyester Fiberglass Resin With Acetone. 1 Step 1. Put on a respirator and a pair of rubber gloves. Fill a small bucket 3/4 of the way full with polyester resin using a measuring cup. Keep ... 2 Step 2. 3 Step 3.
How do you harden fiberglass resin?
Add 2 percent catalyst to the bucket of thinned resin and thoroughly stir it together with a stir stick. The fiberglass will harden within 30 minutes after the catalyst is added. Apply the resin to the surface of the wood or other porous material using a felt roller. Roll the resin on as evenly as possible in a heavy coat and let the resin harden.
Can You thin epoxy with acetone?
The acceptable mix is a ratio of 10:1, which means if you have 10 gallons of epoxy you need to mix it with 1 gallon of lacquer thinners or acetone. After all this explanation concerning thinning epoxy, does it make sense to go ahead with it?
How do you add acetone to resin?
Add 10 per cent acetone to the resin or 10 parts resin to one part acetone. Thoroughly stir the acetone into the resin until it completely mixes together. Add the 2 per cent catalyst to the bucket of thinned resin and thoroughly stir it together with a stick.
How do you thin out Fibreglass resin?
0:403:52Thinning Epoxy Tricks & Tips - YouTubeYouTubeStart of suggested clipEnd of suggested clipSometimes you'll find that your six-minute or 30 minute epoxy is a bit too thick you can take aMoreSometimes you'll find that your six-minute or 30 minute epoxy is a bit too thick you can take a little isopropyl alcohol and just a few drops at a time in a small container.
Can polyester resin be thinned with acetone?
Active member. Styrene is the only thinners for polyester resin, do not use acetone, it seriosly compromises the finished layup.
Can you thin Bondo fiberglass resin?
0:581:50Thinning Bondo - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd the resins in there are the same or fiberglass as they are for most body fillers. So it becomesMoreAnd the resins in there are the same or fiberglass as they are for most body fillers. So it becomes sort of a natural thing to thin it with even.
How do you mix fiberglass resin?
0:422:42How to mix Fiberglass Resin & Clean Tools - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt's just a job of mixing. It. Any sort of clean wood or plastic will do as long as it has flat sizeMoreIt's just a job of mixing. It. Any sort of clean wood or plastic will do as long as it has flat size for a thorough. And complete mix.
What can you use to thin polyester resin?
0:171:17Styrene Thinner - YouTubeYouTubeStart of suggested clipEnd of suggested clipWhen added to polyester resin in vacuum bagging styrene thinner has proven to speed the infusionMoreWhen added to polyester resin in vacuum bagging styrene thinner has proven to speed the infusion process and make it go more smoothly.
How do you make fiberglass resin clear?
Getting the Clearest Fiberglass FinishChoose fiberglass cloth wisely. ... Seal the wood with epoxy. ... Avoid outgassing. ... Use freshly mixed epoxy. ... Brush on epoxy. ... Apply fiberglass one layer at a time. ... Squeegee with care. ... Apply build up coats on the same day.
Can you thin epoxy with isopropyl alcohol?
Do not use rubbing alcohol. While it can be used for the cleanup of uncured epoxy, it contains 30% water and has an adverse affect on the curing process. Acetone can be used but is more likely to change the cured properties of the epoxy.
How do you thin epoxy with acetone?
When using acetone or paint thinner for thinning epoxy, the general rule of thumb is a maximum of 10% added to the epoxy resin. An example would be if you had 32 ounces of epoxy that you were mixing you would only add up to 3.2 ounces of acetone to that mixture. Recommend over acetone and other solvents.
How do you thin out resin?
Thin your epoxy with heat (recommended): Heat is the best way to thin epoxy because it makes the epoxy more workable, without changing the chemical composition. There are two ways to heat epoxy: Heat the separate resin and hardener components before mixing, mix the heated components thoroughly, and apply.
Will fiberglass resin cure without hardener?
Well no, it won't harden. It might eventually go dry and crusty, but that depends on the resin, and it would be super brittle in that state anyway.
What happens if you put too much hardener in fiberglass resin?
Adding too much of either resin or hardener will alter the chemical reaction and the mixture will not cure properly.
What is the ratio for fiberglass resin?
approximately 2.5 : 1The ratio of resin : fibreglass is approximately 2.5 : 1 i.e 1 kg of fibreglass requires approx. 2.5kgs of resin.
How long does it take for resin to harden?
Add the 2 per cent catalyst to the bucket of thinned resin and thoroughly stir it together with a stick. The fibreglass will harden around 30 minutes after the catalyst is added. Apply the resin to the surface of the wood or other porous material using a felt roller.
What is polyester resin?
by Jay Kurz / in Hobbies. Polyester resin is a thick fibreglass liquid that becomes solid when mixed with 2 per cent catalyst. Polyester resin will bond to almost any surface including metal, wood, foam, plastic and ceramics. When used on porous materials like wood, the resin will not penetrate the wood and form a strong bond unless it's thinned ...
How to make a resin sanding machine?
Fill a small bucket three-quarters of the way full with polyester resin using a measuring cup. Keep track of the amount of resin you poured into the bucket. Add 10 per cent acetone to the resin or 10 parts resin to one part acetone. Thoroughly stir the acetone into the resin until it completely mixes together. ...
Can you use polyester resin on wood?
When used on porous materials like wood, the resin will not penetrate the wood and form a strong bond unless it's thinned out. Polyester resin also is used for gel coat, which is fibreglass paint that has to be thinned for spray application. You can thin polyester resin but use no more than 10 per cent acetone or the fibreglass won't harden ...
Can you use acetone to thin polyester resin?
You can thin polyester resin but use no more than 10 per cent acetone or the fibreglass won't harden properly. Polyester resin is a thick fibreglass liquid that becomes solid when mixed with 2 per cent catalyst.
valvebounce Senior Member
The two drain holes in my splashwell are 3/8" higher than the splashwell floor.
Mr Efficiency Senior Member
Methyl ethyl ketone ? Styrene monomer is used to thin polyester resin, but none of it should be necessary for what you are doing ?
valvebounce Senior Member
Because radius's in the splash well are difficult to sand,the idea is to let the resin flow flat.
valvebounce Senior Member
The layer will be about 1/4" against the transom,maybe slightly less,and tapering to infinity as it gets towards the bow.
ondarvr Senior Member
1/4" of unreinforced resin will be very weak, and most likely start cracking, putting gel coat over it will slightly increase the likelihood. Thinning it with anything will make it even more brittle and weaker than it would be to begin with.
What kind of resin do you use for fiberglass?
I'm not really sure what kind of resin they used, the most common type is polyester. If you want to thin polyester resin use styrene. Styrene is the solvent that makes that resin a liquid. You can buy it straight from the fiberglass supply shop. No more than 5% would be my guess, try it and see.
Can resin kick in a gun?
Be careful when heating the catalyzed resin to thin it, it will kick very fast. Heat is one thing the resin and hardener react to. It would be a real pain if it kicked while still in your gun.#N#Vince
How to thin epoxy?
However, if you are working with wood and you need to thin your epoxy using the heat method, the best way is to heat the wood and leave the epoxy resin at room temperature. You can then mix your resin and hardener and apply the mixture to the heated wood. As soon as the epoxy touches the warm wood, it will begin to thin.
What solvents are used to reduce viscosity of epoxy?
Solvents like denatured alcohol, lacquer thinners and acetone. All of these solvents are easily available and also do a great job in lowering the viscosity. Also, these solvents evaporate quickly and are unlikely to become trapped in your cured epoxy resin.
How to lower viscosity of epoxy?
Take a big enough container and fill it with boiling water, then take the epoxy resin container and immerse it in the hot water. Leave it to stand in the hot water for a couple of minutes. This will allow the heat from the hot water , together with the thermal conductivity of the metal epoxy resin container, to lower the viscosity ...
What temperature should epoxy resin be?
The epoxy resin itself, as well as the container, should be handled without burning yourself. We suggest a maximum temperature of around 115° F. if you heat it too much, it will cause the epoxy to harden even quicker leaving you little time to work with it.
How does epoxy work on wood?
As soon as the epoxy touches the warm wood, it will begin to thin. The warm wood begins to cool down and the epoxy will be drawn into the wood and start to thicken. This technique allows you more time to work with your epoxy, as it becomes thinner and it also takes a long time for your wood to cool down.
Does epoxy resin thicken?
Now, you need to work fast, as the epoxy resin will start to thicken as soon as it begins to cool down. Thinning your epoxy resin in this way will create a problem, as the warm epoxy starts to cure a lot faster than during the normal process. So, you need to plan and have things ready when needed.
Does thinning epoxy help with porous wood?
This will allow the epoxy to flow much easier, especially with things like partly rotten wood, helping it to penetrate the porous surface. Thinning epoxy also makes it much easier to brush or roll onto your surface, and fiberglass material is more easily saturated.
Is susho composite better than polyurethane?
susho Composite builder. it's better to use a polyurethane resin as a primer , it protects the woods somewhat from acids in the polyester resin and make it way more durable, and improves the adhesion. Ask your supplier for the correct PU resin. susho, Sep 7, 2017. #11.
Is resin waterproof?
The amount of penetration a resin has into a substrate, has little to do in regard to its effectiveness as a waterproof coating. It's the physical qualities of the resin itself that determine a coating's suitability as a waterproof coating.
Is polyester resin waterproof?
Polyester resin isn't very waterproof on wood and the amount of penetration (regardless of resin type) into the substrate, has little bearing on the effectiveness of the waterproofness of the coating.
Can you use silica resin infusion?
Before adding silica the viscosity is very low, so at that point it could be used for infusion easily. And by adding more styrene you degrade the resin, which makes it less water resistant and typically even more brittle than a normal polyester resin.
Is VE resin 100% compatible?
Click to expand... These aren't two different types of resin, the resin base can be identical for hand lamination and infusion, so they are 100% compatible, and as far as that goes, 99.9% of all polyester and VE resins are completely compatible, the chemistry of each works well with the others.
How to thin epoxy resin?
1. The Heating Method. Heating is, by far, the best method for thinning epoxy resin as it doesn't actually weaken the substance in the slightest. Think of it as heating canned cake frosting. In its natural and cool state is very thick, but once you heat it in the microwave for a few seconds it becomes very thin and pourable. ...
How to make epoxy resin thinner?
Fill a bathtub or bucket with very hot water; use boiling water if possible for best results. Then, take the can of epoxy resin and place it inside. Allow it to sit for several minutes. The heat of the water combined with the conductivity of the metal can will allow the epoxy resin to become much thinner.
What do you need to make epoxy resin?
What You'll Need. Hot water. Bucket. Paint thinner or acetone. Measuring cups. Wood stirrer. Denatured alcohol. Epoxy resin is a very strong material that can be used as a sealant and an adhesive, as well as a myriad of other things. However, one troublesome thing about this substance is that it is very thick and viscous, ...
What is the best solvent to use to thin epoxy?
3. Denatured Alcohol. Denatured alcohol is ethanol that has been made poisonous, but it's a solvent that is safer to use as resin thinner than paint thinner or acetone. It's properties also allow you to thin the epoxy more without as much detriment to its protective nature.
Is acetone the same as paint thinner?
Paint Thinner or Acetone. Paint thinner and acetone are relatively the same with very minute differences between them . It is for this reason that they are interchangeable for the purpose of thinning out epoxy resin.
