Thoughts? Looking at either a Hydmech S-20A, Hydmech H-230A, or Amada HFA250. Boss kind of likes the safety/cleanliness of the H-230A, miter+size of the S-20A, familiarity of Amada. Are they all well built? Longevity comparable? Part availablity? Any other pertinent info to share? Thanks in advance for any and all replies

Who do you use? Bonus points for So.Cal. recommendations.

Originally I was doing 1 pass with 1 spring pass, and checking with a 2B gage they came out great. After changing to a 3B gage though I tried adding in the 3rd pass and removing some cutter comp. hoping to open up the major diameter without affecting the pitch diameter.

The threadmill is in titanium, and those threadmills run CCW. Cutter comp is being applied during a lead in move. % O72202 G00 G90 G17 G20 G40 G80 G53 Z0. G53 X-30. Y0. N1 (6-32 STI THREADMILL B0C0) (T37 - 6-32 STI CARMEX THREADMILL - H37 - D37 - DIA .146") T37 M06 G00 G17 G90 G54 S3900 M04 B0. C0. G254 B0. C0. X-1.25 Y.56 M08 G43 H37 Z3.6 Z3.445 G94 G01 Z3.4328 F25. G42 D37 Y.5665 F2. G02 X-1.2335 Y.56 Z3.425 I.007 J-.0065 X-1.2335 Y.56 Z3.3937 I-.0165 J0. X-1.2335 Y.56 Z3.3625 I-.0165 J0. X-1.2335 Y.56 Z3.3312 I-.0165 J0. X-1.2335 Y.56 Z3.3 I-.0165 J0. X-1.2335 Y.56 Z3.2687 I-.0165 J0. X-1.2335 Y.56 Z3.2375 I-.0165 J0. X-1.2335 Y.56 Z3.2062 I-.0165 J0. X-1.2335 Y.56 Z3.175 I-.0165 J0. X-1.2335 Y.56 Z3.1437 I-.0165 J0. X-1.2597 Y.5467 Z3.1328 I-.0165 J0. X-1.2553 Y.5638 Z3.125 I.0056 J.0077 G01 G40 X-1.25 Y.56 Z3.4328 F25. G42 D37 Y.5665 F3. G02 X-1.2335 Y.56 Z3.425 I.007 J-.0065 X-1.2335 Y.56 Z3.3937 I-.0165 J0. X-1.2335 Y.56 Z3.3625 I-.0165 J0. X-1.2335 Y.56 Z3.3312 I-.0165 J0. X-1.2335 Y.56 Z3.3 I-.0165 J0. X-1.2335 Y.56 Z3.2687 I-.0165 J0. X-1.2335 Y.56 Z3.2375 I-.0165 J0. X-1.2335 Y.56 Z3.2062 I-.0165 J0. X-1.2335 Y.56 Z3.175 I-.0165 J0. X-1.2335 Y.56 Z3.1437 I-.0165 J0. X-1.2597 Y.5467 Z3.1328 I-.0165 J0. X-1.2553 Y.5638 Z3.125 I.0056 J.0077 G01 G40 X-1.25 Y.56 Z3.4328 F25. G42 D37 Y.5665 F3. G02 X-1.2335 Y.56 Z3.425 I.007 J-.0065 X-1.2335 Y.56 Z3.3937 I-.0165 J0. X-1.2335 Y.56 Z3.3625 I-.0165 J0. X-1.2335 Y.56 Z3.3312 I-.0165 J0. X-1.2335 Y.56 Z3.3 I-.0165 J0. X-1.2335 Y.56 Z3.2687 I-.0165 J0. X-1.2335 Y.56 Z3.2375 I-.0165 J0. X-1.2335 Y.56 Z3.2062 I-.0165 J0. X-1.2335 Y.56 Z3.175 I-.0165 J0. X-1.2335 Y.56 Z3.1437 I-.0165 J0. X-1.2597 Y.5467 Z3.1328 I-.0165 J0. X-1.2553 Y.5638 Z3.125 I.0056 J.0077 G01 G40 X-1.25 Y.56 G00 Z3.445 Z3.6 M09 M05 G255 G53 Z0. G53 X-30. Y0. B0. C0. M30 %

#24 Drill - https://www.kyocera-sgstool.com/products/hi-percarb-series-135-5xd 32TPI Carmex Threadmill - http://www.carmexusa.com/default.aspx?page=item detail&itemcode=MTSH0250C4132UNMT9 6-32 STI Thread - 3900 RPM 2.0IPM

That's what I was thinking as well, but I put in a brand new threadmill and same issue.

H2. Currently looking for a convenient supplier of H1's.

OSG. Everything from a General Purpose to a Exotap VA-3 to a HyPro AL.

How is the minor diameter affecting the pitch diameter? Do I want to go to the upper limit so the tap isn't doing much work, or the lower limit so the tap is forced tight and straight?

Our customers' quality standards changed where before they were ok with all threads being Class 2B (even though some prints called out 3B). Now they want the 3B's to be to print and I am having a hell of a time getting them right (always oversized), so I'm wondering what do you guys do to be successful? Material is 2024/6061/7075, threads are 4-40 up to 1/4-28, both standard and STI. They check fine with a 2B gage, so I'm close, but not close enough. I've used H2 taps, 2-3 flutes, spiral-straight, bright-steam oxide, solid holder-floating holder, 3-100sfm. Follow up question- I've got 6-32 3B threads in Ti-6Al-4V where my go is tight, and my nogo is loose. I'm threadmilling these guys so it seems like maybe the major is collapsing more than the minor because of memory effect, but not sure how to solve this problem either.

Cimcool http://www.cimcool.com/wp-content/uploads/manage-msds-pif/pif/CIMVANTAGE CSS-NR3.pdf

Go to 55 seconds in for the crazy!

Good afternoon all. I'm looking at tooling expenses and noticed 10% goes to coolant, ($270k tooling/$27k coolant). Where are you at? I actually think our coolant prices are very low ($785/barrel), but as a percentage of expense it seemed high.

Excellent gentlemen, worked perfect. Thanks a ton!