tim -p 2b2b2b415448300d 🎮Sep 13

Behold, the first prototype of my amazing new invention: The reverse one-way screw! The natural counterpart to those anti-theft screws used to attach license plates to cars, the ROWS can only ever be unscrewed, not driven in.

To use it, simply already have it installed somewhere, and unscrew it like you would a regular screw - attempts to reinstall it will simply result in the screwdriver safely slipping out of the head, with no risk of it actually being driven back in.

#3DPrinting

Show threadtim -p 2b2b2b415448300d 🎮

Modeling something like this is simpler than you think. I use #Rhino3D and a plugin called BoltGen to generate an M20x50 thread (with a 2.5mm pitch), shoved an inverted truncated cone on top, and messed around with subtracting bits from the top until it looked about right.

The 20mm width is mainly to make it print reliably - something this tall but less wide would be more likely to break off mid-print, and I didn't want to spend time reprinting a joke.

Sep 13 at 1:52amWeb
Show threadEli the BeardedSep 13
@timixretroplays Useful for tamper evident packaging maybe