sanding pl adhesive b4 glassing???

[osborn159]

ive got my stringers and transom glued in w/ pl premium was wondering if it is necessary to scuff the fillets b4 applying the resin and cloth???
has anyone run into any problems glassing over this product???
thanks in advance for the answers/tips.
Dennis

 

[NetMatrix]

Re: sanding pl adhesive b4 glassing???

I don't know to much about glassing or anything, but I would say yes on giving it a rough sand. I know resin seems to stick better to a roughed up surface and everything.

 

[jonesg]

Re: sanding pl adhesive b4 glassing???

I think its a better idea not to form a filet from PL, its more like a hard putty, too soft for glass to hold onto. Make filets with thickened resin.
When I did mine I wiped all the excess PL away...something tells me sanding it would be difficult, maybe a rasp plane like they use for bondo bodywork will cut it away. Or throw extra glass over it and forgetaboutit.

 

[redfury]

Re: sanding pl adhesive b4 glassing???

Depends on what kind of access you have to the bead of PL. I bed my stringers in PL, and then use thickened resin or boat bondo to create a fillet for the fiberglass to form over...no sanding required. Trim with a knife if you feel the need to remove excess.

Sanding of any adhesive works poorly...it's an adhesive, period.