Can You Use Regular Bondo On Fiberglass?

by | Last updated on January 24, 2024

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Bondo Body Filler cures fast, shapes in minutes and is formulated to be a non-shrinking and permanently durable material. In addition to its uses on vehicle exteriors and other metal surfaces it is also a suitable repair option for wood, fiberglass and concrete.

Can I put body filler over fiberglass?

As I mentioned, fiberglass does not sand well. That is why I recommend only applying a small amount to the welded areas and rough sanding it. After this is done, you can apply body filler on the top of the fiberglass filler and finish the repair as you normally would using body filler.

What is stronger bondo or fiberglass?

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.

Should I use fiberglass or body filler?

Fiberglass filler is much stronger and harder than regular body filler so anywhere the filler needs extra strength is a good place for fiberglass filler. I rarely use long strand filler because it can’t be spread as smoothly but when a large area needs the strength the long strand is usually the material needed.

How thick can you apply fiberglass filler?

Body filler should be applied in thin layers from 1/8-inch to 1/4-inch thick , with dry time between layers.

Is there a marine Bondo?

“Bondo Glass” is the marine product for filling .

What is the difference between Bondo glass and Bondo filler?

Bondo-Glass is a unique reinforced filler containing short, interlocking fiberglass strands and fibers that make it twice as strong as regular body filler . ... Eliminates the need for backing strips, fiberglass resin or cloth on small holes and rusted out areas.

Can you put putty over primer?

You can use glaze putty over primer . ... Either pin holes or lows or something that pops up after it’s been primed on occasion. Let me give you one hint to help you, and you may be doing this, but use a Guide Coat in your body filler stages.

What is the difference between Stage 2 and Stage 3 Bondo?

Stage 2 – Fill. This stage involves patching holes with reinforced filler and smoothing and shaping filler before painting. Stage 3 – Paint . This stage includes painting the area and blending and smoothing primer and paint.

What is the difference between body filler and putty?

“The difference between putty and filler is basically the “talc” in the product . ... Therefore, when using it, the putty is no longer necessary in the repair process.” Putty is great for filling pinholes, scratches, and minor flaws. Metal Glaze is a two-part, premium polyester finishing and glazing putty.

Can you use P38 on Fibreglass?

ISOPON P38 polyester filler is a two component chemical paste used for the filling of holes and imperfections in surfaces such as steel and GRP. ... Surface preparation and instructions for use ISOPON P38 polyester filler can be used on the following surfaces:- Bare steel – degrease and abrade with P80 paper.

What is the difference between fiberglass and Bondo?

I primarily use fiberglass to cover up weld areas... the fiberglass putty will resist water and keep everything sealed up so you dont’ get rust in those joints... then I sand that down, and apply the bondo over that, real thin, just to fill in the holes and give it a smooth look.

How long does Fibreglass filler take to dry?

How long does the resin take to harden? (eg 5 minutes or 30 minutes ) This depends on the temperature of your working conditions and how much catalyst has been incorporated into the mix. Warmer temperatures will reduce your curing time and colder temperatures will increase the length of cure.

Can you fiberglass over rust?

Just glopping resin over rust isn’t a good idea. It won’t hold well , and the rust will very likely continue to grow. Especially with the polyester resin, as water works its way under it and through it quite well. Brush it to as clean a metal as possible, and then glop on the resin.

Can you fiberglass over bare metal?

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.

Rebecca Patel
Author
Rebecca Patel
Rebecca is a beauty and style expert with over 10 years of experience in the industry. She is a licensed esthetician and has worked with top brands in the beauty industry. Rebecca is passionate about helping people feel confident and beautiful in their own skin, and she uses her expertise to create informative and helpful content that educates readers on the latest trends and techniques in the beauty world.