This is my first post, which is weird, because my project is almost done. I have some back-filling to do.

I think a cam lever is a convenient way to attach and tighten the various bits and bobs to my ring mount, but the "real" ones are expensive. Even worse (or better?!) I can't find one for download online, free or paid.

This (and the summer heat) smells like an opportunity to make the world better!

Time for CAD.

Figure 1. I placed the cam-shaft hole too-far off-center. Can you tell this is my first time?

Figure 2. I'm self-taught in Fusion360, so there are always weird things that I don't understand. For example, I can't select the circular sketch here. No idea why.  

Figure 3. Version 1 of the Cam Lever is ready for printing! I'll have to try it out tonight.

This process took me about 2 1/2 hours.