Gravity Knife (with 72x9x0.4 blade 30°)

Based on [TIKTOK GRAVITY KNIFE FIDGET TOY]  but I don't need a toy.

So redesign to pair my artists blades.

Requires the following hardware:
x2 M2 nut
x1 M2x11mm flat head screw
x1 M3x5mm flat head screw
x1 72x9x0.4x30° artists blade

Also:

It's too narrow to use, so may need some swelling to push.