A printable knife made with the following design goals:
use standard and interchangeable utility knife blades
as small as possible
operate with one hand
“lock” open and close
reasonably strong
simple and easy to print
Print Settings
I use the following…
petg @ 0.12mm
no support / brims
note the orientation in the photos screenshot
the sliding action will feel a bit rough at first, but smooths out with use (a little dab of silicone grease helps a lot)
Updates
Mar 2024 (v2): cleaned up the models, improved tolerances, added keyring hole, better retention of blade holder when applying a lot of downward cutting force