Oversize drills for getting perfect fit with handle pins. 1/8 pin doesn't fit into 1/8 hole. I don't know why but a slightly larger bit is needed to fit snug with no gaps.
Use a brad point first for wood scales, then enlarge hole slightly with over size bit to get perfect fit for the pin.
-#30 is just bigger then 1/8
-#12 is just bigger then 3/16
-F is just bigger then 1/4
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