Thread: Build yourself a fibreglass stock

Step four
Create the first mould half

A good layer of release wax is required now. Use as per the manufacturer instructions, I used 4 coats. Then a a good layer of heavy hold hairspray and you’re good to go

I used West System resin and hardener mixed with 406 silica filler to make a type of gel coat. This was brushed on all over the stock and parting board, creating a decent radius in all the sharp edges. This is critical to ensure there aren’t any voids in these areas, as the glass won’t conform to the sharp angles.


Once that has tacked off (is sticky to touch but doesn’t transfer to your finger/glove) use 6 layers of 200gsm plain weave fibreglass to cover the first half. Make sure you work all the air bubbles out with a stiff brush and or a roller. You’ll probably have to make cuts in the cloth to get it to conform to the stock shape (especially around the pistol grip) but you’ll work it out. Just be sure to make cuts of subsequent layers in slightly different places so the laminate remains strong.