Fiberglass question

[Joker2]

The boat's transom was less than 2" from the factory

[BenFishin]

Originally Posted by Bonita Dan

Epoxy resin along with roven during the same process should have been solid enough to do your job. Cloth/resin(as a builder) would have been an in-between before the next stage of resin and roven and so on. Not much ya can do now except use a grinder to grind off the bubbles and repair that area. Gelcoat does wonders to repair a mistake,just gotta make sure the repair behind it will last and not come back to haunt ya. Just sayin.

Gelcoat is a no-no over Epoxy...
Grinnd out the bubbles feather the edges with thickened epoxy. Let dry, sand whipe with acetone. Remember, with West System, once you miss the recoat window you will have to lighlty abrade and whipe with warm water or acetone before you apply any subsequent layers of glass/resin.
West System has a rather high amount of Amines in it which come to the surface once fully cured. Without removing any amines you will not get the good bond between layers/coats.

With all that said, it shouldnt be that bad. 36 grit sand wheel on a buffer you should be able to knock that out in no time...

What temps are you working in? you using the fast catalyst or slow? That will have a lot to do with fluid penetration. Are you using a resin roller? Squeege?

Just some things to digest...

[Joker2]

When I did that layer it was around 70, I applied resin with a plastic spreader, then rolled it out with a resin roller ( hard plastic type ), yes I do sand between coats and also wipe with acetone. I am using 17 oz. Bidirectional cloth backed with 3/4 oz. mat, I guess I just didn't use enough resin and didn't work it in enough in those areas. I just can't stand doing something over again because of my mistake.

[RidgeRunner]

Originally Posted by Joker2

The boat's transom was less than 2" from the factory

It does not sound like much but that is how I remember it 10 years ago.LOL

I thought I laminated 2 sheets 3/4" plywood together and it was a good match for what was there originally. I added some knee braces and made my 20 into a full transom boat with bracket. It is holding up good even with a 250 stressing it out.