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|    rec.crafts.metalworking    |    Metal working and metallurgy    |    215,319 messages    |
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|    Message 213,511 of 215,319    |
|    Snag to Bob La Londe    |
|    Re: Inside micrometer    |
|    08 Jul 24 21:29:49    |
      From: Snag_one@msn.com              On 7/8/2024 7:15 PM, Bob La Londe wrote:       > On 7/8/2024 11:08 AM, Snag wrote:       >> On 7/8/2024 12:41 PM, Snag wrote:       >>> I scored an older unit complete with all the rods ...but they are       >>> not set correctly . The 1.5-2.5" is off by about .009" short of 1.5       >>> when the thimble is zeroed . Looking into the end that goes into the       >>> head I see a setscrew . I think this is used to set the rod length       >>> but I want to be sure of procedure before I go reefing on it . The       >>> other question I have is about the "extended" setting . The head only       >>> has .500 of travel and there are 2 setscrew dimples in the mounting       >>> sleeves . When in the "long" dimple it's about .050" short . I       >>> suspect there must have been a .500 sleeve that set the proper length       >>> in the long position . Any help will be appreciated !       >>       >> I guess I should have mentioned this is the Sherr-Tumico unit I       >> posted about last week .       >       >       > I wish I had something constructive to say... so instead I'll say this,       > "If you can make it give you useful readings it probably isn't wrong."       >       > Yesterday I drilled and tapped a mold for bolt on hinges. (Shop made       > hinges) One hinge was 1/16 inch off on all three holes. I put a washer       > in between, and not only does it work great, but it looks cool like a       > layered knife scale.       >       > After correction I reprinted my print and stuck it to the mill with a       > magnet. Then I shipped the mold. Now the print clearly shows a washer       > used as a spacer in the lower hinge.       >       >       >               There ya go , making lemonade again ! I've done a little poking       around , there is a .500" spacer missing . Length adjustment is going to       be easy , that is a setscrew in the sleeve . The rods are threaded so       all I need to do is figure how much and which way to adjust them . For       now I'm going to get the 2.5 - 3.5" rod set up so I can fit a couple of       cylinder sleeves . Gotta be pretty accurate on this one , the cast       aluminum (water cooled) cylinder block walls are kinda thin and I'm       afraid if I put too much interference on the fit I'll crack one . That       would be a Bad Thing .       --       Snag        Illegitimi non carborundum              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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