[pianotech] pinblock Question

[Ron Nossaman]

John Ross wrote:

> *Other question is, I am going to be using #1 pins, and want to use 'the 
> Nossaman' system of double drilling, rather than using the air stream to 
> cool the bit.*
> *What size for the first and second passes?*
> *John Ross*
> *Windsor, Nova Scotia.*


Drill the first pass about 0.015" smaller than the second 
pass. Drill the second pass to the size that gives you a 
torque level you like in the block you use.
Ron N