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  #1  
Old 01-07-2021, 05:05 PM
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Default Drill index

Made a index for my Sliver and Deming drill bits for 1/2" to 1" by 64s and one for larger bits. I have all the 32s 16s and 8ts but missing 10 of the 64ths bits. Any one have any extra.
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Old 01-07-2021, 11:31 PM
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Nice rack.
I think I have up to 1-1/2" no extras.
the 5/8" takes a beating, best to have an extra.
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Old 01-08-2021, 03:27 AM
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I have a pretty good collection of both Prentiss and Morse taper drills but I've never worried
about having all the sizes. Once you get over 1" or so you're usually just using the drill
as a starter hole for a boring operation or a clearance hole for a larger bolt; neither of which
require precise sizes. Quite a few of the tap drill sizes from 1" to 1-1/2" are 64ths but I rarely
tap holes that large anymore so I guess I don't miss the drills. Whatever you've got it's nice to
have'em organized.....and your setup is better than mine...
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Old 01-08-2021, 12:15 PM
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Nice index for sure. It on my to do list to organize both my drills at home, and at work. The work one is in the works. Now when I can scare up some more time in between jobs, it might get more progress


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Old 01-08-2021, 03:19 PM
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Quote:
Originally Posted by LKeithR View Post
I have a pretty good collection of both Prentiss and Morse taper drills but I've never worried
about having all the sizes. Once you get over 1" or so you're usually just using the drill
as a starter hole for a boring operation or a clearance hole for a larger bolt; neither of which
require precise sizes. Quite a few of the tap drill sizes from 1" to 1-1/2" are 64ths but I rarely
tap holes that large anymore so I guess I don't miss the drills. Whatever you've got it's nice to
have'em organized.....and your setup is better than mine...

I’ve often found at that size going up a 64th has never bothered the taps going thru the holes. And a little easier to crank the tap.


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Old 01-08-2021, 04:10 PM
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Quote:
Originally Posted by greywynd View Post
...I’ve often found at that size going up a 64th has never bothered the taps going thru the holes. And a little easier to crank the tap...
I agree, especially with larger holes in tougher materials like SS or 4140, I'll open the hole up a bit to make it easier to run the tap in. You have to be a little more precise if you're talking about a spec hole but otherwise it usually doesn't matter.

Again, with larger holes if the part is something that will fit in the lathe I'll often single point a thread rather than try and use a tap--maybe not as quick but much easier...
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Old 01-08-2021, 09:10 PM
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Quote:
Originally Posted by digr View Post
Made a index for my Sliver and Deming drill bits for 1/2" to 1" by 64s and one for larger bits. I have all the 32s 16s and 8ts but missing 10 of the 64ths bits. Any one have any extra.
What did you use to mark the sizes on the index?
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Old 01-08-2021, 10:32 PM
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I have one of these
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Old 01-08-2021, 10:56 PM
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Does the pneumatic work better than the electric?
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Old 01-08-2021, 11:28 PM
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Yes ,also great for removing broken bolts .
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