Add this to almost any if not all traditional rat (not mouse) traps with 2 drywall screws (or equivalent) to force proper entry of the rodents head to ensure a quick and humane kill. print flat side down with normal settings you are comfortable with. I used .28 mm on 4mm nozzle and it printed great. No support is needed for the recess version but the ‘mistake’ extrusion version does require it. Both are secure, highly functional and will ensure a clean kill.
The author marked this model as their own original creation.