QA

Can You Fiberglass Over Body Filler

Can you add fiberglass resin to body filler?

Just going back to the filler question, use straight filler on the repair and only add resin to the final skim. The resin will make the filler less flexible and should only be used on thin finishing layer.

Can you put fiberglass on top of bondo?

Re: Epoxy fiberglass over polyester filler? As long as the bondo is cured, no worries my friend. Just scuff it with sand paper and your good to go. Epoxy will stick just fine.

Can you layer body filler?

If you find that you’ve over-sanded and now have a low spot, you may need to reapply a layer of filler and wait until it dries before continuing. You want to sand until the surface of the putty is smooth and level with the rest of the body.

How thick can you apply fiberglass filler?

3. Apply a thin layer using firm pressure to ensure maximum adhesion being sure to “wet out” the surface completely. Apply additional filler in layers, building up the damaged area higher than the surrounding surface. Maximum filler thickness should not exceed 1/4 inch.

Can you mix cream hardener with fiberglass resin?

The cream hardener is effectively benzoyl peroxide with added pigments and thickeners. The fiberglass hardener is methyl-ethyl-ketone peroxide (MEKP) with some added stabilizers. They both serve the same purpose. When mixed with the resin, they kick off an exothermic reaction.

Will cream hardener work with fiberglass resin?

You need liquid hardener for fiberglass resin. The cream does not work .

Will gelcoat stick to bondo?

bondo has a polyester resin base so ya polyester fiberglass resin (or gel-coat) will bond fine.

Will epoxy stick to bondo?

Yes, epoxy will stick to Bondo. If the bondo has cured for more than 24 hours polyester resin will not chemically bond to it. However, if as has been said, you rough up the cured bondo with sand paper, you can achieve a mechanical bond with polyester or with epoxy resin.

What will fiberglass adhere to?

Fiberglass is a very durable material that will bond to almost any surface, including plastic, metal, wood and Styrofoam. For laying up fiberglass on hard materials such as metal it’s important to thoroughly scuff the surface to get a strong bond.

Are body fillers bad?

Fillers like Bondo can crack if they are mixed too thickly, harming rather than improving the look of the car. Additionally, there’s a risk of discoloration and poor long-term wear when you use a dent repair filler like Bondo.

Is fiberglass stronger than Bondo?

Registered. “Bondo Glass” is a short strand fiberglass filler, I goes on like Bondo, but it is made of fiberglass, so it is stronger, it’s also a little harder to sand then regualar bondo.

Can you use spot putty on fiberglass?

This spot and glazing putty is ideal for spot repairs and other small repairs to auto body panels. Use it for filling pinholes in body filler as well as for covering minor sand scratches, and more on metal, fiberglass and wood as well as sanded and primed or sanded and painted surfaces.

Can you use car bog on Fibreglass?

If your just using it to to fill imperfections you definitely want regular car bog, which is in its most basic form is talc in polyester resin. I would not use hairy bog unless your fibreglass is a bit thin and you want to stiffen it up.

Does fiberglass hardener go bad?

It is the same in bondo, they simply add red or blue dye or in typical fiberglass resin it is a clear thin liquid. It does go bad with time. However you usually can just use more of it to get the reaction started.

What kind of hardener do you use for fiberglass resin?

Bondo fiberglass resin liquid hardener is designed specifically for use with Bondo fiberglass resin and Bondo metal reinforced filler. This hardener is easily mixed with resin or filler; a chemical reaction creates an extremely strong, waterproof repair material.

What can I use to harden fiberglass resin?

How do I Cure Fiberglass Resin That Doen’t Have Enough Hardener Set the fiberglass in the sun. The curing of fiberglass resin is an exothermic reaction, meaning that heat makes it work. Use a heat gun on the fiberglass. Spray a mist of catalyst onto the fiberglass with a spray bottle.

Are all fiberglass hardener the same?

All the different color hardeners are chemically the same, just different color dyes. One color is not going to work any better or worse than any of the other colors. And those hardeners don’t freeze (at least here in Freeze Your Nads, Michigan) where 10 below zero is not out of the ordinary.

What is the difference between red blue and white cream hardener for body filler?

Body filler and hardener come in different colors (Fig 15) such as red, blue and white. In the past, the only difference between these colors was the color. Now some manufacturers offer hardeners in three different hardening speeds for cold, medium and hot weather.

What is fiberglass hardener made of?

The majority of all fiberglass parts are constructed using polyester resins, it’s the most widely used type of resin in the composites industry. Polyester resins require a catalyst to cure or harden, typically methyl ethyl ketone peroxide (MEKP).

Can gelcoat be used as a filler?

Gel coat filler Both are brand names. Mix it in with your gel coat slowly or you may get lumps. Use the same amount of catalyst as with straight gel coat. If your gel coat has wax or surfacing agent in it, you must sand all the surface before adding any more filler or gel coat over it.

Can you use body filler on gelcoat?

any body filler will do. I use 3m hi build filler, it is half the price of Rage and in my oppinion is better than rage. It spreads easier and sands easier.