Sheath for Toyota Prius keyfob

thingiverse

Every time I sit down or bend over, taking just one step near my Prius can accidentally trigger the buttons on my keyfob with a fold of cloth and activate the alarm, lock the doors, or engage another security feature. Recently, I acquired a 3D scanner and chose to make my first practical creation a protective sheath for my keyfob, designed to prevent those unwanted button presses. I began by scanning the keyfob using my new Matter and Form 3D scanner, resulting in the generation of a keyfob-scan.stl file. Then, I utilized meshlab and netfabb cloud to create the convex-keyfob.stl file - a solid shell obtained from the convex hull of the original scan file. To fabricate sheath.stl, which is designed specifically to hold the keyfob securely in place, I scaled up this hull in openscad while subtracting off the keyfob itself, leaving a thin yet effective shell. Upon multiple trials and adjustments in openscad, I eventually finalized this project. Detailed instructions on how I used my 3D scanner can be found at: http://home.comcast.net/~tomhorsley/hardware/matterform/matterform.html. It is worth noting that creative techniques and unconventional tools, including modeling dough, were explored during this process.