This design is inspired in classic F clamps but with a little lever instead of threaded rod to make it faster and easier. It's always good to have a couple of them around your bench in case you need to hold two parts together. I find it specially useful for gluing parts.
It's very easy to print and doesn't require any supports. All .stl files are already oriented for its best printing position. Once printed, assembly is super straight forward. The bar and upper jaw just fit into position with a satisfiyng “click” and the lever of sliding jaw just needs a bit of force to be released and spin free. You can try to separate lever from jaw parts with an exacto knife or spatula if you find it too hard, but please be careful ;)
Tested both in PLA and PETG with good results, although I prefer PLA over PETG, because it feels more rigid and also because of the lever part could be harder to release in PETG due to it's higher layer adhesion.
The author marked this model as their own original creation.