[TheForge] Lapping compound

Sun Jun 15 06:19:00 2003

Thanks! that's a keeper
Larry Brown

At 03:11 AM 6/15/2003 -0300, you wrote:

>There was a discussion awhile back about valve lapping compound.
>Here's another application:
>
>The big end bearing parts on my A&O air hammer are held together with
>special 7/8" x ca. 10" bolts and nuts.  The nuts came off real hard
>and after cleanup still require a lot of weight on a 2' wrench to turn
>them on.  Gonna be hard and awkward to re-assemble inside the tight
>space of the hammer body.  Running a tap through the nuts didn't help.
>No visible distortions.  Machinist's blue didn't reveal any obvious
>high spots.
>
>So I smeared the bolts with lapping compound and turned the nuts on
>and off a few times.  Cleaned off the abrasive real carefully. The
>nuts now can be turned on by hand with a little effort.
>
>- Mike
>
>--
>Michael Spencer                  Nova Scotia, Canada
>
>[email protected]
>http://home.tallships.ca/mspencer/
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