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  1. dsatchell

    Mitsui 250MH Table Coolant Drain Thread Size

    Hi, Quick question: I've been trying Metric and Standard pitches based on the opening's measurements, but the opening is in a difficult spot to measure, and what I'm cutting does not seem to fit quite correctly. I'm still getting leaks when running the flood coolant. Does any know what the...
  2. dsatchell

    Inventor wants to help us on his jobs in shop+sign NDA

    Hi, I’ve been in this situation many times; here is what has worked for us: (I’ve been in business for 15 years, 20yrs in industry before that, so I've seen s bit.) -mutual NDA is a must, typically 2 pages at most! - scope of work document as part of the quote to help get the NDA completed...
  3. dsatchell

    Deckel Centricator CIII English Manual?

    Hi, I'm looking for a copy of this manual. The previous post have non-functional links. Any help would be much appreciated. Regards, Don
  4. dsatchell

    Recommendation for Small batch Heat Treating

    Hi, I'm in IL and am looking for recommendations on a supplier to get some grinding blocks heat treated. The blocks are 5x5x3" and made with DC53. Our oven is just slightly too small. Ideally, they could also provide liquid nitrogen cryogenic treatment. It's a small batch, two blocks.
  5. dsatchell

    Mitutoyo gage amplifier probe plug type for MU Checker?

    Got it, thank you!
  6. dsatchell

    Mitutoyo gage amplifier probe plug type for MU Checker?

    HI, I need to adapt an older MU checker gage amplifier to a Mitutoyo 519-522 probe. I'm planning on replacing the MU gage amplifier recepticles with one to accept current probes. Does anyone know the ID of the 519-522 probe plug?
  7. dsatchell

    Chasing a warp on two parallels

    Hi, missed this note, no the machine is manual, so no speed setting that I can remember..I try to limit my step over to 15 to 20th, but sometime I'll grab 25th depending if I feel that it's finishing or roughing pass. Each stepover is per pass (each side of the pass I push another step over)...
  8. dsatchell

    Chasing a warp on two parallels

    The Dykem worked well. If I were to do it again I would apply a finer layer of it, and not apply it as blobs. When dried it formed a ridge along the edge of the applied film that I needed to scuff off for consistency. Generally, three layers of the solution provided about 0.25th thickness...
  9. dsatchell

    Chasing a warp on two parallels

    I'll try the setup with the mag transfer blocks next if the shim approach does not work. Tx.
  10. dsatchell

    Chasing a warp on two parallels

    Hi, Thank you all for the notes. The mag, and table are flat within the 0.5th, table, mag base and top were reground and honed with a precision g-stone. Meaurements of them at each state were consistent with the measurements. Also, I've been working on some blocks 5x5x2.5 and they all have...
  11. dsatchell

    Chasing a warp on two parallels

    Hi, thank you for the notes. I'll try the process with paper and low magnetic power. The machine is a Mitsui 6x18, with factory new ways. It's the largest grinder I've worked on so this is my first round of experience with parts this long. When working with the slide and chuck to resurface...
  12. dsatchell

    Chasing a warp on two parallels

    I have been following a lot of the tips on the site to little avail. It's really perplexing. My project is refinishing 2 1x2x18" parallels. these came to me used, and were generally in good condition with the exception of a <0.5 thou warp in them (top and bottom face (1x18" surfaces)), I can...
  13. dsatchell

    Mitsui 250 MH installing the ball ways

    Hi, for measurement 0.2 thou == 0.0002 inch (bad shorthand?). I'm looking for a drain, didn't see any tubing to that location in the space under the table. There are drain tubes to other locations but not there. When we tried oil, it just dripped off the end onto the lower (outer) dust...
  14. dsatchell

    Mitsui 250 MH installing the ball ways

    Hi, we were surprised at the bump as well. Once we pulled the ways, you can see the dimple on the way surface. What we've done up to this point is replace the spindle cartridge, balls and ball ways. With the new ways, we did install the bottom set semi-snug and then ran the bed a few times...
  15. dsatchell

    Mitsui 250 MH installing the ball ways

    Hi, thanks for the note. We did several rounds of cleaning out the oil and using a precision ground flat to check the way surfaces. Sure enough, found two clean ding's at the center and then off center on the ways closest to the operator. A similar ding was also indicated on the flat way in...
  16. dsatchell

    Mitsui 250 MH installing the ball ways

    Hi, been working on the Mitsui 250MG. The grind of was generally visually flat, except for a repeating dimple at about the distance between balls, you couldn't see it visually unless you used a flat stone on the surface, then it would be obvious. The dimple measured about 0.2 thou. I'm...
  17. dsatchell

    Mitsui 250MH spindle evaluation / rebuild recommendation

    Hi Richard, I agree, my first grinder was a 6x12 Powermatic....( I hear the groans already).. it had specific criteria that I needed, namely I could disassemble the grinder and get down a narrow flight of stairs (twice). In any event, the grinder was a mess, after fully scraping and aligning...
  18. dsatchell

    Mitsui 250MH spindle evaluation / rebuild recommendation

    Hi, yes that is correct, it was right at 5k for the spindle. I had observed a new spindle start up previously, a few breif on/off's to get it up to speed and then let is run for my standard warmup of ~ 10 min.
  19. dsatchell

    Mitsui 250MH spindle evaluation / rebuild recommendation

    Hi, I took all of the info on board, had 0.2 thou runout and significant noise. Colton from Morrall Machine Services came by my shop (thank you!) and took a look as well. I was going to have them do the rebuild on this cartridge but when I pulled the cartridge I found significant staining...
  20. dsatchell

    Mitsui 250MH spindle evaluation / rebuild recommendation

    Hi, Thank you for the note and recommendations. I'll pull the wheel and check the balance, and spindle noise.

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