Retractable 'Cat Claw' Box Cutter

Updated: 04Feb2021

This is kickstarter is a blatant copy of my design, in form and function:

https://www.kickstarter.com/projects/oceanusbrass/kraken

In no manner was there an agreement to license the design for commercial use.

For those in support of the creed of free and open source, sharing of design, hold fast

Inspired by this thing:
https://www.kickstarter.com/projects/caswellknives/caswell-morphing-karambit-premium-utility-knife

Preamble...
It started out for fun, to figure out the mechanism... Having shown it off to my sensible colleagues, seeing it held in their hands, it made me realised how menacing this thing is.

Please use it wisely, it is nevertheless a neat practical tool, not meant to be used as a weapon. Thing holds a standard Stanley box cutter blade.

Print 100% infill, total print time ~4hours

Bill of Material:
1) 4 x M3 x 18mm countersunk screw, for securing the linkage
2) 4 x Nylon lock nut, if not available use thread-locking adhesive