Wanted #3 Mt Drill Bit Broken or Worn Out

Found a MT3 reamer while going through a box.
No longer much good as a reamer.
Did you get this resolved?

Daryl
MN
 
Hi Daryl,
No I haven't bought anything yet. On my to do list. Send me a PM with the details please.
 
I'll get a pic and some details and send a PM.

Daryl
MN
 
About .916
Less than 1inch
Sorry.

Daryl
MN
 
Hi Daryl,
Been on the road for the past week. Thanks for checking. I appreciate it.
Chris
 
Hi Ken,
Thanks for the tip. Any issues with hardening the end or grinding it?
 
gi_984 said:
Hi Ken,
Thanks for the tip. Any issues with hardening the end or grinding it?
Click to expand...

Grinding is no issue. Hardening, may respond to quench, may not. The blank arbor is around 28-32 HRC as is, which is fairly hard for most applications. I suspect the material is equivalent to 1045-1060 grade mild steel. This should have enough carbon/manganese composition to respond to heat treatment. It's not the same alloy as used in a twist drill.

Edit: looking at the one I have, it has been heat treated. Again, I suspect the hardness is in the 28-32 HRC range. Maybe a tad higher. I wouldn't expect anything greater than 40 HRC in hardness. The product is ground all over and nice!
 
I found a reamer that will get you 1.100"dia for about 1.440"It might be just shy of 1.1". The #3 mt shank needs a little clean up. PM me if you want it and Ill get it in the mail
 
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