A small pistol crossbow.
This time we are exploring polymers
Seen here fully operational, but unfinished,
this tactical unit is of polymer construction.
Tiller and bolt track have laminated biological matrix of picea abies composition covered in polyvinyl-polyester polymer monocockue.
( that is pieces of fir + polyester filter cloth saturated with PVAc glue )
Bolt track is cast from polysaccharide-vinyl polymer. Same material is used to underside sliding surface.
potato flour mixed with PVAc wood glue
Close up of tactical top trigger cocked
Tactical energy capacitors are Syringa vulgaris backed with biological filaments embedded in proteine and polymer matrix.
hemp + PVAc glue forward, sisal + grocery gelatine rear
Pulling about 600N / 122mm (130#/5") - weight measured from handle peaks at 25 lbs , so it could be made 2-3 times heavier still.
It sticks blunt bolt to pine board from 20m
And it is accurate enough to hit 5 inch wide board consistently from that distance.