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  1. T

    Suggestion on Straightening Shaft After Hardening

    I was concerned as the shaft had a few changes in cross section and I left .005" on the diameter to clean up. The grinder wanted .010" on the diameter. It was ground at Electro Chrome so they could have chromed and reground if it didn't cleanup, so I didn't lose much sleep Around Compton a few...
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    Suggestion on Straightening Shaft After Hardening

    I had an 8620 shaft that I wanted heat treated vertically, it was shorter then the OP's shaft and most HT'rs around here (LA and OC) couldn't hang the part because they didn't have quenching baths deep enough. Except Certified HT That surprised me, probably a result of the consolidation going...
  3. T

    Looking for a good mid grade 3d printer to get started with.

    the pieces in the picture, and some parts printed in black PETG+10%PTFE are to replace Black Delrin parts I make for one assembly I do for the customer. I didn't have time (or inclination) to machine 200+ parts so I made them out of the 2 materials. I was tempted to see if IGUS could send 3D...
  4. T

    Siemens vs Fanuc, what would be the best Controller for a CNC?

    You can any Fanuc control serviced going back 40+ years
  5. T

    Distortion of A2 air-hardening steel

    You haven't bought any acetylene lately, have you? Nope. I use my neighbours :) usually costs me a double burger special down at Mike's Burgers. I figure he comes out ahead.
  6. T

    Distortion of A2 air-hardening steel

    so what's stopping you trying it yourself? Heaven forbid you learn something from the experiment. Not trying to be a dick, but what's the worst that's going to happen? It's what $5-10 for the material and a few cents for the gas? -------------------------- It may not be straight (depends on...
  7. T

    Segmented rounds

    I rarely run production, mostly proto/r&d work. So I'm not bothering to try and optimise every tool path,every feedrate, every tool type etc etc I go with what works for me, which is being conservative. I prefer reliability based on what I know works for me rather then pushing the boundaries.
  8. T

    Looking for a good mid grade 3d printer to get started with.

    These are the parts I was making out of the IGUS I151 filament. Not great, but good enough. They needed some clean up with a razor blade. the parts are internal so not visible. I didn't have time to try and optimize the slicer (Prusa Slic3R) to get better prints. I think I used the IGUS...
  9. T

    Segmented rounds

    If I got that finish on one of my Fadals the OP is getting I'd take it out and shot it.
  10. T

    Segmented rounds

    The manufacturers data is only a starting point. You have an issue, therefore you have to try different settings to get a good result. .025mm/tooth is .001ipt, I would consider that too be too fast at face value. imho And certainly I would be running spring passes as a matter of policy. ymmv...
  11. T

    Looking for a good mid grade 3d printer to get started with.

    Yea I love a good spanking........ Just got another one from a PracticalMachinist moderator today. as they say in England Thank you Sir, May I have another? -------------------------------- True story. We were hosting some of my late wife's friends boys, who had come over from Germany (my...
  12. T

    Hamas strike on Israel.

    We already did, 9/11
  13. T

    Looking for a good mid grade 3d printer to get started with.

    I know 2 people who have the Bambu printer and are in awe of it's abilities. The strange issue I had with the IGUS I151 filament was I couldn't print pieces close together, I had to space them at least 3/4" apart or I would get very fine stringers between the parts.
  14. T

    Hamas strike on Israel.

    ~~~~~~~~~~~~Mod Delete - Personal Attack~~~~~~~~~~~
  15. T

    Looking for a good mid grade 3d printer to get started with.

    I've been printing parts out of IGUS I151 filament, and some other parts that are printed with PETG+10%PTFE. So far their working with no wear in a sliding application
  16. T

    Hamas strike on Israel.

    https://www.yahoo.com/news/rare-action-against-israel-us-174821212.html from the article In a rare action against Israel, US says extremist West Bank settlers will be barred from America WASHINGTON (AP) — In a rare punitive move against Israel, the State Department said Tuesday it will impose...
  17. T

    Pallet Racking Above Equipment… what could go wrong?

    I have 2a lathe and 2 BP's under pallet racking, it's a good way of creating more square footage. Works great Might change my mind when we get the next big earthquake
  18. T

    Segmented rounds

    600mm/min is too fast. especially as your running around a 3mm round. Your feedrate at the circumference of the 3mm round is too high. I typically program .0002-.0003ipt and use 3 flute YG-1 endmills 10000*3*.0003 = 9in/min but going around those features I would start at 2-3in/min and do 2...
  19. T

    Hamas strike on Israel.

    I don't believe the figures either. I posted it to highlight the IDF's use of the term ‘tremendously positive’ ratio given combat challenges
  20. T

    Hamas strike on Israel.

    I seem to remember they executed Timothy McViegh, and another guy Terry Nichols is in jail with no chance of parole. Or maybe I'm mixing it up with something else. yes that's it, Oklahoma was a false flag operation by the government, who deliberatley placed the child care center where they...

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