I'm creating the template for my pickup cavities for a pair of Nordstrand dual coils which measure 1.25" x 4", and was thinking about the most convenient and sensible amount of room to leave between the pickup itself and the edge of the cavity. I was thinking about making the cavity dimensions 1.5" x 4.25", meaning about 1/8" extra per side. This seems to be a good balance between a snug pocket and a practical amount of fitting space. The smallest pattern-following router bit I could find was a CMT 5/16" (Router Bit World...still on order as they're out of stock ), which seems like a good choice for tight cavity corners. I guess what I'm wondering is how much room do you leave, and can you see any faults in my logic/process?