Oops Clamps with 1/4" hardware

thingiverse

I built an MPCNC and needed some work-holding tools, so I modeled up these "oops clamps" clones to 3d print. These are built around 1/4" hardware that is really easy to find in the US. Each oops clamp requires: 3D print one tip, middle, and back at ~50% infill 2x: 1/4" aluminum rod approximately 3 inches long (easy to find 3-foot sections at hw stores) 1x: 1/4-20 bolt 1x: 1/4-20 carriage bolt for the back portion 1x: 1/4-20 nut for underneath the back portion I ended up needing a few 1/4" washers as well because my bolts were slightly too long. I'll probably just end up cutting the bolts down with a hacksaw later. I found that there was some variability in the diameter of the 1/4" aluminum rod I was able to find at Home Depot and Lowe's, so I decided not to make the parts press-fit. The holes are a little larger than they need to be, and I just used 5 min epoxy to fix the tip and back in place. Do no epoxy the middle section, it is intended to slide so you can hold your work piece securely. .step files are included for your convenience if you want to make a remix.