Wrapping glass over outside corners?

[creyc]

There's a few spots in my new wall build that have outside corners that need fiberglassing and they've all be giving me headaches.

I can glass up the inside seams of a regular box, no problem. But with these outside-seams everytime I wrap the cloth around the edge I get a large air bubble on both sides of the corner that will NOT stick down. The cloth won't wrap tightly enough over the sharp edge and it's giving me tons of extra work to fix it.

Does anyone have a solution for this? Sand the sharp edges down soft maybe? Use chopped matt instead of cloth? Anything?

[Neel]

use chop mat and a fiberglass roller , shouldn't have any problems.

[skittlesRgood]

why are you glassing the outside edges?

[Soloact]

Use chop mat,a roller,and tear your mat into pieces.should lay down fine.

[creyc]

Thanks guys. I'll try chop mat and a roller today.

And they're outside-corners where the box wraps around the wheel well.

[Rainman215]

Thanks guys. I'll try chop mat and a roller today.

And they're outside-corners where the box wraps around the wheel well.

Yea. Use smaller pieces of mat. dont try and go over the corner directly. use 3.4 strips that somewhat overlap around the edge...

[wL<3bass]

Or you can use spray adhesive to hold them down so they don't bubble up on you.

[ozmat]

You will have to round the corners for the choppy to roll around the corner

[InfiniteRuckus]

can't u just cut a slit in a small rectangle piece of cloth, fold them over, & glass?

*demonstrated with a paper towel*

cut slit

line the slit up to the edge

fold & glass

fold & glass

???

Edited July 27, 2010 by InfiniteRuckus

[bobonit]

Unfortunately, mat does not fold that nicely. I would get some 3/4oz chopped mat (thinest I can get) and tear it up good, and just work it down.