Nice tool crx. Did you use any particular type of rubber band for binding the nails?
Personally, I use the $2 tweezers sold at IOS lot these days. They are beefy and work well, you can see a couple of pics of them in towards the beginning of my SK68 teardown post. I bought that particular pair of tweezers specifically for pills and tailcaps, but they are good all around tweezers on the workbench. I also own snap-ring pliers and found the tweezers vastly superior for this task. The tweezers fit more sizes of slot/hole AND reach much deeper into a light than the snap-ring tool does. For larger rings you end up having to hold the tweezers further open than normal (push them open).