3D Printable Chip Bag Clip

grabcad

This is a 3D printable clip that can be used to hold things such as a chip bag shut. It is functional when printed with ABS, but something like nylon or polycarbonate would likely work better. The purpose of making the clip wide and the flex joint thin is to minimize the bending stresses while still having sufficient clamping force. If the flex joint is fatter, the clip will experience much more plastic deformation. The clip with a spline flex joint is an improvement over the clip with a half-circle flex joint. It has less severe stress concentrations and can open somewhat further due to an increased arc length. I made a new version that is better than this clip design.