Pinblock drilling. Trying again for help!

[Newton Hunt]

Ok, good answer but how does a blind man drill two holes in
the same place twice when the subject gets moved around a
lot.

Joiners don't do pin holes.

Yeah, yeah, and drill presses don't do joining with

Ron Nossaman wrote:
> 
> Richard, Newton, etc,
> 
> >Further I would ask what drilling speed of which drill bit
> >type is most suitable for Dilignit type blocks.  Polished
> >bits, jobber bits, high spiral, low spiral and what speeds.
> 
> This can be made as difficult, critical, expensive, and complicated as you
> care to make it. Heck, with a little work and creativity, you can probably
> even prove beyond a doubt that Man was never meant to be able to do
> something as impossibly demanding as drilling a suitable hole in a Delignit
> block. Might get you a statue in the park, or at least honorable mention in
> the Curmudgeons' Quarterly. Or, you could duck nearly all the potential
> problems up front by abandoning the assumption that the hole absolutely has
> to be drilled in one perfect pass, and go with the low tech, no fault,
> Uncle Wookie's idiot resistant block poking procedure. Double drill.
> 
> The first pass is with a generic,
> anytypethatwillreachfromthechucktotheblock 1/4" or so drill bit. The
> rotational and feed speeds are determined by the following criteria: Does
> it smoke? Is the bit still turning? If the bit doesn't turn, your feed
> speed is too high. If it smokes, your rotational speed is too high. Any of
> the nearly infinite combinations of rotational speed and feed rates that
> makes a hole without smoking is dead-on the performance requirements.
> You're not fitting to the pin here, you're just making a hole. In tuners'
> terms, it's the finished hole's equivalent of a pitch raise - a pre-hole,
> or proto hole if you will. Any damage, trauma, passing offense, or hurt
> feelings the block incurs in the process will be reamed out with the second
> pass. It will get over it.
> 
> The second pass is a tad more technically demanding in that you must
> actually HIT the previously drilled hole with the finish sized bit. This is
> rather important.  Other than that, you can use a bit from the same
> anytypethatwillreachfromthechucktotheblock House of Bits product that you
> used to make the pre-hole. You can even use the same rotational speed,
> maybe slowing the feed speed a tad (another technical designation, a bit
> more than a smidgen) just for the appearance that it's difficult work and
> you're paying attention accordingly (in case someone's watching). There's a
> lot lower chance of smoke on the second pass, since the flutes of the drill
> aren't all clogged with chips, and the bit runs much cooler as a consequence.
> 
> Done this way, it's very difficult to screw up drilling a Delignit block.
> It takes imagination, single minded dedication, and in extreme cases, a
> committee. I use 6.8mm for the final pass, or 17/64" if It's going
> someplace where the climate control is in the realm of mythology.
> 
> >I have long lusted for a mortising tool thinking it could be
> >used for a number of things, like unbushing keys?
> >
> >               Newton
> 
> You'd take a mortising tool when you could have a biscuit joiner?
> 
> Ron N
 spit.

		Newton