Search found 8 matches

by EricM
Fri Apr 05, 2019 6:31 am
Forum: General Discussion
Topic: CMM granite surface plate grade ?
Replies: 3
Views: 589

Re: CMM granite surface plate grade ?

I don't believe granite CMM tables have the same flatness / repeatability requirements as a true surface plate. In my experience, the CMM tables are NOT used as a datum reference, since the CMM software creates the datums on the part being measured. The granite is used typically for stability. I hav...
by EricM
Mon Jan 14, 2019 11:28 am
Forum: General Discussion
Topic: Flea Market Score.
Replies: 10
Views: 1185

Re: Flea Market Score.

I believe (on other another forum) an appropriate response would "You suck!" In other words, "Great find!" Diligence and patience pays off. :)
by EricM
Tue Sep 25, 2018 8:28 am
Forum: General Discussion
Topic: Craftsman Micrometers
Replies: 8
Views: 1305

Re: Craftsman Micrometers

I would be happy to claim Peter Marks as a relative, but I cannot. He, however, may feel otherwise. :) I have never met him in person, but we have communicated a few times through another forum.
by EricM
Thu Sep 20, 2018 7:10 am
Forum: General Discussion
Topic: Craftsman Micrometers
Replies: 8
Views: 1305

Re: Craftsman Micrometers

Peter Marks compiled an informational book about micrometers and their makers. The information was for his micrometer collection he was selling to start a scholarship program. (My apologies, Pete. My 2-sentence description of your work does not do it justice!) His book is an incredible reference sou...
by EricM
Mon Mar 12, 2018 12:55 pm
Forum: General Discussion
Topic: Gage Block Care & Feeding
Replies: 25
Views: 2656

Re: Gage Block Care & Feeding

From an article in Quality Digest... Care of Gage Blocks http://www.qualitydigest.com/may97/html/gguide.html by Drew Koppelmann Cleanliness is critical. Gage blocks must be stored clean and must be recleaned immediately prior to use. Gage blocks -- those apparently simple little chunks of steel that...
by EricM
Mon Oct 09, 2017 10:22 am
Forum: General Discussion
Topic: Model Machinist Book?
Replies: 20
Views: 2680

Re: Model Machinist Book?

Here's the ad that Pete refers to:
8PiecesofIron.jpg
by EricM
Tue Jun 28, 2016 2:04 pm
Forum: General Discussion
Topic: New Brown and Sharpe?
Replies: 16
Views: 1960

Re: New Brown and Sharpe?

Check out the website for Long Island Indicator Service: http://longislandindicator.com/ They give brand name comparisons on micrometers, calipers, indicators, etc. The ratings and comments they give are based on years of experience repairing them. No affiliation with them, just a satisfied customer...