Toothpaste squeezer

This is a remix from https://www.thingiverse.com/thing:4731772.
Made spring as a separate item.
There are two base files with 0.5mm and 1mm opening on top.
Roller was taken from https://www.thingiverse.com/thing:4753979.

Added v2 design with handle locking mechanism. I printed it with 0.2 layer height and no support. Sometimes tips of locking blades will get stuck to the base. I used a flat screwdriver to release them.

v3: https://www.thingiverse.com/thing:4821664