Thread: Build yourself a fibreglass stock

Step seven
Prep the mould

Because I’m pretty OCD, I got some 1500grit wet and dry and polished up the inside mould surfaces. There was slight grain patterns left from the original, so I cut that back perfectly smooth to ensure an A1 finish straight out of the mould.

Next I stiffened up the mould halves with some pine stringers. Probably not necessary, but I wanted to make sure the mould wouldn’t warp at all. After that I opened up the area above the barrel channel so that glass strips could be laid in there when the two halves of the stock are joined together.

Then I used 10x M6 bolts and wing nuts evenly spread around the edges to hold it all together.