BLOG POST: 3D Printed 'Attachment': Object Selection & IDEATION Ok so since I always have a lot of keys, and they keep making a racket when I walk. It's annoying how long it takes me to find the right key on my keychain whenever I need it, so I decided it to make a group keyholder, I call it swiss key holder because I want it to look just like how swiss army knife. Here's my sketch: