In article ,
"Bob La Londe" wrote:

Hey Pete, You suggested freezing an arbor and then fitting to get a good
engagement. I'm not having any issue with the taper to drill press after
degreasing, but the taper to chuck is still an issue. I thought I might try
freezing the arbor and fitting it to the chuck. That's gotta be a better
alternative than green loctite sleeve locker. So, how long would you leave
the arbor in the freezer to get the metal down to the lowest core temp
possible? Freezer is set at 0F and ambient is in the high 70s right now.

Overnight should do it, unless you are in some sort of hurry. If you can
find some dry ice, apply that for a bit (10-15 minutes, with a
pre-chilled arbor) before mating...and warm the chuck as well.

None of which will do much if there's a defect (dent, dirt, burr,
scratch) in the tapers that's making them not grab properly as is.

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