Oops Clamps with 1/4" hardware

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