Spike Collar

Attempt to reproduce a old-school spike collar I came across. It is likely just as effective as the original. It uses the locks in the link below (requires 2) to secure in place. If more time was spent I could have eliminated one but, due to skill and time(lack of) I just made symmetric.

It requires alot of printing but makes for an effective toy. You will need to print
2 x the top files (4 total)
2 x inside keyhole
6 x inside screwhole
4x middle
and many spikes. You could make your