About this 3D model
First version of the positive side of the Clip for the Timbuk2 Tuck pack bag.it fits snuggly into the negative side of the clip. However, the design itself is still a work in progress. I had to adapt the shape of the clip so it resist wear better. The part (slightly different than the one on my bag):https://www.timbuk2.com/male-clip-bag-accessory/9506.html?dwvar_9506_color=908&dwvar_9506_size=25mm&category=replacement-parts Following timbuk2 instructions, it seems that this clip can fit all Messengers bags as well. the bag:https://www.timbuk2.com/customizer#/product/28-custom-tuck-backpack/size/3/customize