Ed Foot wrote: <I have made my own pinblock reamers from bits in which I grind away all the cutting edges for the first inch or so of the bit. It makes for an accurate pilot without chewing a sideways hole on the way in. This is interesting and makes a lot of sense. So, what exactly is the cutting action of a reamer? Is is simply a scraping action? If so, what keeps the 1st hole's wall fibres from just bending over rather than actually being sheared off ? Jim Ialeggio -- Jim Ialeggio jim at grandpianosolutions.com 978 425-9026 Shirley Center, MA
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