Fixing stress fractures in fibreglass

[Hostilemonk]

Thinking of getting my race glass (fibreglass and Kevlar) painted - but has a number of stress fractures in it. Some are very fine others a little deeper. What's the best way of fixing them so they won't show through or crack the paint.

Thanks

[Jamathi]

Spud for repairs and paint.
You cannot beat his work and commitment from Hilo to MV.

[bertie]

kevlar aint nice to work with.
The trick to getting rid of those fury bits of kevlar that will destroy a paintjob is to sand it with 600 or 800 wet and dry. it take the furries off.

I'm going to assume u have stress fractures in your gelcoat then the only way to fix is to grind out then bog up or do a gelcoat repair. I'd stick with bog coz this aint a boat.

if you eat into the glass/kevlar a bit much please back it up with some more glass on the back.

Do you know if the fairing is epoxy or polyester resin???

[Flyboy]

If you have a bit of damaged fairing you can do a burn test to find out. Polyester resin will burn under candle flame, epoxy will require a mild torch flame.

Oh and if you use wet and dry on Kevlar, be sure to dry it thoroughly (heat lamps) before applying a repair. Kevlar is hygroscopic and trapped moisture can cause delaminations in the material later on.

[bertie]

i should have said to use the wet and dry paper dry. my bad.