Ron Bendele
Well-Known Member
In another thread Les Voorhies said:
"If you're worried about your pivot hole being square, make sure your drill press is square and do the pivot hole smaller than the finished pivot will be, then after HT clean up the flats and then ream the pivot hole to final size and use a barrel lap with 400g valve lapping compound until the pivot just slides in, I got this method from Todd Begg and it's working very well."
I didn't want to hijack that thread so I started this one. I have a couple of questions. These questions are not just directed to Les, but I would love to hear his answers
- Is the ream you use after HT carbide or something else? Where do you get it?
- When using the barrel lap, how do you do it ... by hand, by machine?
- Do you move the lap in & out of the hole or spin it (or the blade) keeping on one spot on the lap?
- Should the final ream be .001" or so undersized to account for the lapping?
- Does the 400g mean 400 grit? (Sorry for being dense.)
TIA,
"If you're worried about your pivot hole being square, make sure your drill press is square and do the pivot hole smaller than the finished pivot will be, then after HT clean up the flats and then ream the pivot hole to final size and use a barrel lap with 400g valve lapping compound until the pivot just slides in, I got this method from Todd Begg and it's working very well."
I didn't want to hijack that thread so I started this one. I have a couple of questions. These questions are not just directed to Les, but I would love to hear his answers
- Is the ream you use after HT carbide or something else? Where do you get it?
- When using the barrel lap, how do you do it ... by hand, by machine?
- Do you move the lap in & out of the hole or spin it (or the blade) keeping on one spot on the lap?
- Should the final ream be .001" or so undersized to account for the lapping?
- Does the 400g mean 400 grit? (Sorry for being dense.)
TIA,