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Hi Gang: I just did the math, and the Diameter minus Pitch equals Tap Drill size works out to a 58% thread. Since it is a ratio relation ship the percentage doesn't change with diameter or pitch

It has the watchmaker's spindle, but I don't see a standard one.

Re: UNiMAT SL 1000 Edelstaal Lathe ( https://www.ebay.com/itm/256198732959 ) (256198732959) hernandezaredes ( https://www.ebay.com/usr/hernandezaredes ) 240 (

Tap size Drilling chart | Thread Hole Size Specifications upmold.com looks like 13mm for 14x1 Best Regards John

No offense taken, guys. I am just sharing information from standardized reference tables. The reality is that you could have a looser tap drill hole. You may just need to engage an additional thread

Only if you have a whole lathe's worth of parts! ;)? Atlas TH42 (working!!!) South Bend heavy 10L (restoration project in multiple piles) Smithy CB-1220XL 3-in-1 (same as SB) DB200 Unimat (more or

Hi Carl, it was one of those collet chucks that Andrei showed… I just gave up and will make a brass collet holder (when I have finished the U3 threading attachment - one thing leads to another!) to

Wow, I feel inadequate now, I only have 4 lathes! (Unimat, Logan, Clausing & a wood lathe). Do parts for a Schaublin count? -Dave

Glad to see I'm not the only one with the small lathe affliction. No Unimat (yet), but I think I'm at 9 lathes now ranging from a Sherline up to an 11" Logan.

Hi Peter: I bought some steel that was too hard to saw. I built a big fire in the back yard and annealed it for hours. When it cooled I could cut it, but it was still tougher than mild steel. You

This chart is missing the M14x1mm which is 12.75mm Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ Sent: Tuesday, September 5, 2023 12:57:37 PM To: Carl

Drill sizes for metric tapping https://www.carbidedepot.com/formulas-tap-metric.htm ________________________________ Sent: Tuesday, September 5, 2023 12:49 PM To: [email protected] <[email protected]>;

I tried to bore out and thread one of these to M14 x 1 - on a Unimat 3 ! ?They are made of tough stuff. Wrecked an M14 tap, although I had bored it generously. (BTW surely by definition the minimum

Hello: I was told tap drills in metric are simple: screw size minus pitch, so M14 - 1mm = 13mm tap drill. 12.75 might be 100% thread, but not much stronger than 75%. Carl.

Ah, I understand! Hey, at least you didn't have to single-point that thread! I think my best by date was about 38 years ago. But I have seen folks who should know say things that scare me. I'm 68 now.

Yes I tapped the brass for the set screw, but I also cobbled the set screw together, not trivial on silver steel, which was the material closest to hand at the time. So I used a die for that - I

very nice! Best Regards John

12.75 is the drill size for an M14 tap ________________________________ Sent: Tuesday, September 5, 2023 11:56 AM To: [email protected] <[email protected]> Subject: Re: [Unimat] end mill holder I got

I got one with a 8mm hole, ER-11, IIRC, with the intent to thread it M12x1 for my SL/DB machines. It's here somewhere! ;) IIRC, M14x1 needs a 13mm tap drill? I have a pair of very nice tungsten

Had to use a tap to thread the set screw hole. Possibly to thread the spindle end, too, though that can be single-point threaded if you have small enough tooling. IIRC dies are used to put external