I promised a product family , so here is something for spring collection.
A small pistol crossbow.
This time we are exploring polymers
![Tactical Polymer Pistol J_tact_1](https://2img.net/h/www.kolumbus.fi/jik/j_tact_1.jpg)
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 )
![Tactical Polymer Pistol J_tact_2](https://2img.net/h/www.kolumbus.fi/jik/j_tact_2.jpg)
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 Polymer Pistol J_tact_3](https://2img.net/h/www.kolumbus.fi/jik/j_tact_3.jpg)
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
![Tactical Polymer Pistol J_tact_nuoli](https://2img.net/h/www.kolumbus.fi/jik/j_tact_nuoli.jpg)
And it is accurate enough to hit 5 inch wide board consistently from that distance.
A small pistol crossbow.
This time we are exploring polymers
![Tactical Polymer Pistol J_tact_1](https://2img.net/h/www.kolumbus.fi/jik/j_tact_1.jpg)
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 )
![Tactical Polymer Pistol J_tact_2](https://2img.net/h/www.kolumbus.fi/jik/j_tact_2.jpg)
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 Polymer Pistol J_tact_3](https://2img.net/h/www.kolumbus.fi/jik/j_tact_3.jpg)
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
![Tactical Polymer Pistol J_tact_nuoli](https://2img.net/h/www.kolumbus.fi/jik/j_tact_nuoli.jpg)
And it is accurate enough to hit 5 inch wide board consistently from that distance.