Bowden Guillotine

This is a specialized remix of Botmaster's excellent Razor Guillotine redesigned for cutting ptfe bowden tubes.
It produces a clean, square cut without any crushing of the tubing.

You will need:
2 4m 50mm hex head shoulder bolts
2 4m nuts
1 3m 15-20mm screw
1 3m nut
2 springs
1 single edge razor blade

I can't give any specs on the springs because, like Botmaster, I used springs I already had from an assortment.
The CAD files could be modified to use different (non-metric) har