Made this for two reasons:
I was surprised removing the top portion of the blade cover did not prevent the cover from falling off--it has very good friction fit.
I used an M3x8 screw and nut, but a countersunk M3x6 would work better (keep everything flush--the screw does not get in the way when in use)
Printed it with 4 walls and 20% infill with PLA; nothing crazy. Will be using it to cut cardboard. The screw provides most of the strength when poking
The author remixed this model.