Here is a tip for holding a ball while sanding from @refinedrebellionjewelry - “I make my own Argentium balls and use this method to level off the bottom before I solder. I use red sticky positioning wax to hold each ball in place and a heatless Silicon Carbide wheel on my flex shaft to quickly flatten the bottom. Just stick the wax to your bench pin!” Thank you Rebecca for sharing this with us, we appreciate it! #workholding #flexshaft #sandingtip