i broke most of my original moonclips first day of use, so i went to find a 3D print. when i didn't find one, i decided it couldn't be that hard to adjust a model and make it fit. that took me about 12 hours of testing and fitting and measuring to figure out how to make it work. they are strong enough to move around pretty freely, but they will break if you drop a loaded one. they quickly look charred, but still hold fine for at least 3 loadings, which is as far as i have gotten. they require no additional tools to load and unload, they are not as strong as the steel ones and release easily. i have only printed them in PLA so far, and that seems to be good enough.