Leather work strap cutter

Leatherworking strap cutter :

I make without a handle (leather_strap_cutter_stopper.stl), but you can print with a handle (leather_strap_cutter_handle.stl).

NEED to Print :
Scale x 1 pcs ( leather_strap_cutter_scale.stl )
Handle or stopper x 1 pcs ( leather_strap_cutter_handle.stl or leather_strap_cutter_stopper.stl )
Wsaher x 1 pcs ( leather_strap_cutter_washer.stl )

NEED to Buy :
Screw M3 x 20 x 2 pcs
Screw M6 x 30 x 1 pcs
Nut M3 x 2 pcs
Nut M6 x 1 pcs
Blade x 1 pcs
Steel washer d 20 x 1 pcs

Knob for nut taken here https://www.thingiverse.com/thing:713300