The Factorio artillery cannon to no biter nest is safe.
I used various M3 bolts/nuts to fasion everything together.
I had to use epoxy to put a bolt on the flat part of barrel to screw down the top of the turret i’ll probably redesign it to just use a knurled nut
I uses super stretchy hair bands as the resistance with a glued in bolt on one side to snag and trapping them on the hammer with a washer and nut
simply super glued the bottom U part to the center post.
parts list:
M3 screws 5-10mm
Super sretchy hair bands
~7mm washers
keychain + eyehook
(optional) 1/8th metal sinkers
Credits:
warmarine759