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NexGen Flight Simuator NexGen: Tech Tip II. Micrometer Repair.
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  • Author Author: phoenixcomm
  • Date Created: 21 May 2018 5:08 AM Date Created
  • Views 1024 views
  • Likes 10 likes
  • Comments 7 comments
  • nexgen
  • diy cockpit
  • 436-1
  • starrett
  • diy repair
  • micrometer
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NexGen: Tech Tip II. Micrometer Repair.

phoenixcomm
phoenixcomm
21 May 2018

This is a really nice find at my local pawn shop. I uncovered this jewel in the Dollar box.  It was sticking badly. It really needed a good cleaning. It was a Starrett model 436-1.  I retracted the spindle into the sleeve and then removing it. by continuingly rotating the thimble counter-clockwise. This took a few tries but finally separated it.  I used a lightweight oil and a new Scotch-BriteRegistered Stainless Steel Scrubbing Pad to clean the spindle. I had to repeatably fully insert and remove the spindle from the barrel. You could use a piece of printer paper with lightweight oil to then polish the spindle.imageimage

imageimageimage
Spindle & SleeveBurn Mark on SpindleFins -- Good Enough

The micrometer now runs in and out smoothly. It is off .001" but I need a special wrench to set it back to 0.000". The micrometer is missing the ratchet stop (it's jammed), and the spindle lock nut is non-functional at the moment.

 

 

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Top Comments

  • mcb1
    mcb1 over 7 years ago +4
    Looks like it had a very hard life ... No micrometer should be subjected to that sort of abuse .... There's a good writeup here. Evaluate, Repair and Adjust a Second-Hand Micrometer You should be able…
  • jw0752
    jw0752 over 7 years ago +3
    When I was 16 I worked for an automotive parts house that also did motor rebuilding in a back shop. The rebuilder was a very very precise man, much like the tools with which he worked everyday. One day…
  • genebren
    genebren over 7 years ago in reply to jw0752 +3
    John, That is a great story. So you were a wise guy way back then. Thanks for the huge smile that I got as I read your story Gene
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  • mcb1
    mcb1 over 7 years ago

    Looks like it had a very hard life ...

    No micrometer should be subjected to that sort of abuse ....

     

    There's a good writeup here.

    Evaluate, Repair and Adjust a Second-Hand Micrometer

     

    You should be able to knock up the spanner quite easily.

     

    or alternatively

    https://www.ebay.com/p/Micrometer-Spanner-Wrench-Mitutoyo-Starrett-Brown-Sharp-Fowler-Calibration/551440943

     

     

    mark

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  • phoenixcomm
    phoenixcomm over 7 years ago in reply to mcb1

    mark your right I found the article at the Instructables after I had taken it apart. At the moment how can I say it is good enough. And with it closing on 1. I know that I have to subtract .001" from the reading but what the hell. We used to say "It's not quite specced but in spec." LOL

     

    Cris.

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  • phoenixcomm
    phoenixcomm over 7 years ago in reply to mcb1

    mark your right I found the article at the Instructables after I had taken it apart. At the moment how can I say it is good enough. And with it closing on 1. I know that I have to subtract .001" from the reading but what the hell. We used to say "It's not quite specced but in spec." LOL

     

    Cris.

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