"Bob La Londe" wrote in message
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"John R. Carroll" wrote in message
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"Bob La Londe" wrote in message
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I picked up a Taig 2019 mini mill recently, and have been using it to do
some CNC engravng while I learned how to use my software and get a feel
for my machine. Mostly I used some 1/8" shaft stuff to do some
engraving.
Today I decided it was time to make some tight fitting solid t-bolt nuts
and rails to fit in the table. Something a little better than the flat
plates that came with the mill. Also helicoiled to a common size so I
could pick up a variety of different length screws to use with clamping
fixtures.

Thinking everything would be honky dory I sliced some 3/8" aluminum
plate
on the table saw to 5/8" wide strips So I could mill it down to 1/2" to
fit the table grooves. Then I got it clamped up on the mill table with
a
couple welding clamps. I used the shaft of an 1/8 mill point to get the
bar straight roughly to the table travel, and proceeded to swap collets
to use a 1/4" flat end mill to rough material off of one side only to
find out that my 1/4" shaft mill point would not fit in the 1/4" collet
with the collet snapped into the nut. Then I tried with the 3/8" collet
with a 3/8" shaft end mill and got the same results. The ER16 is what
is
supposed to be used in this mill, and the collets where clearly labeled
for the size I was trying to install and use.

Am I missing something? If I took the collet out of the mill head nut I
could force the shaft in, but then it would not snap into the nut at
all.
I measuered the shafts of the various mill points I was trying with a
caliper, and the 3/8 measures .375 and the 1/4 measures .250 so I know
its not that, but hey I had to check and make sure right.


You have metric collets.

JC

Mislabeled?

Probably not. I've seen, and have, 10mm collets labeled "3/8", but they
aren't actually.
you probably have a 6 and 10 mm collet.
measure the ID and see.

JC