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I just use a very cheap plastic hand pump for the vacuum. Works very well with my vacuum bagging attempts with peel ply and bleeder fabric.

I made a mould of the barrel channel and glued it in place in the stock. Then drilled a small hole at each end of barrel channel. Then poured in the PU foam in through one hole and blocked that hole...

I would guess Polyurethane foam, that's what I used for mine, and I think Stug used that too.

Stock looks fantastic. Well done!

Robojaz pm me if you want to share some info. I found some of Stug's instructions online a few years back and made myself a nice fibreglass stock and have done a few CF attempts and finally figured...