Utility Knife With Lock

Why wasn't there a lock? ... Now there is... Clean the movement area and add a drop of oil.

And the most important settings... I used PLA+ filament... three walls... and a 0.25 layer height.

I hope it works for you... as it did for me on my first print... See the assembly image.

The orange dot is the pressure point... I used a marker for clarity.

For 19x61 mm blades ...without screws or support