I wanted to make my scope weights look a little less trashy. I printed these and they have a very thin wall, but work great. I also printed a cap which covers the bottom piece as well. This is just the same openSCAD file but with no tall cylinder at all. I sprung for some thumbknobs from the local home improvement store but had I to do again I'd print replace them with a cap with a captive nut instead. YOu can see how I build the weights on my blog: http://sheekgeek.org/2019/adamsheekgeek/telescope-counterweights