Finally found a reamer tool today..... When i worked for a short time doing small repair jobs at a guitar store they saw me using a drill to widden the hole for a larger shaft pot.... They told me to never use the drill and use this thing called a reamer... It's a tappered metal shaft that can widen holes by hand safer then power tools.... The tool the shop had is about 10 inches long... has a nice long tapper shaft to it... They can't find them anymore and i have been looking for one like it! saddly the one i found is about 5 inches long and goes from 1/8 up to 7/8th holes.... The shop uses theirs for making pot holes and tuner holes larger... Saddly with the shorter reamer i have i don't think it will be good for tuners but should be great for pots and stuff....
WhoFan
WhoFan