Richard King
Diamond
- Joined
- Jul 12, 2005
- Location
- Cottage Grove, MN 55016
Just want everyone to know the news. I have volunteered to send 10 HK-24" ground and scraped brand new casting for the tests. It my not happen as fast as I would like it to. To prove what I believe happens when one scrapes new and older straight-edges. The initial plan is to have a graduate student hang 10 straight-edges and ring 5 while scraping and test 5 that are not rung.
DR. Slocum wrote: "cast and then heat treated (stress relieve ) is well known. vibration stress relieve is also known…. the “new” question I think is after you scrape are there stresses? is that the question, that cause warping (or those stresses relax with time causing warp?)
but do not send anything until a project defined and I have a student
this actually would be a far betetr thing to do at NIST which has the measurement facilities.
Professor Slocum has contacted NIST. We have not heard back yet.
These tests should quiet those who doubt my teachings. I love challenges and I follow up on what I say and don't just make noise and disappear.
Also Assistant Professor who took my Boston Glass a couple of years ago and scraped one of my HKA-18 straight-edge in the class did some tests after the class as shown in his article. I had not seen this info and I mentioned his tests would have been better if he had supported the SE on the Airy Points. He said when I come out to help they will retest it and see what happens. See his article below.
I intend to travel to MIT or NIST to help assist in these tests. I expect the conclusion of these tests will be published for future generations to see how an old method we professional and hobbyist scrapers use to vibrate during scraping by hitting a casting with a soft blow hammer to remove any stress during the scraping process or while a SE or cast Iron parts is stored improperly or stressed in some way.
I also intend to ask them to test thermal tests when one holds with your bare hand on cast iron bars. We had a discussion on this a few years ago. Rich
file:///C:/Users/richa/Downloads/StraightedgeCharReport%20(1).pdf
PS: I emailed Professor Bell and he said that the tests were not on his 55PPI scraped straight-edge. He had an undergrad scrape on it and apologized it was not as accurate as he wanted when the tests were made.
Pic's are students "ringing" SE's they are scraping during classes One at Kieth Ruckers and one at Bourn & Koch.
also casting of SE's we plan on sending to MIT or NIST.
DR. Slocum wrote: "cast and then heat treated (stress relieve ) is well known. vibration stress relieve is also known…. the “new” question I think is after you scrape are there stresses? is that the question, that cause warping (or those stresses relax with time causing warp?)
but do not send anything until a project defined and I have a student
this actually would be a far betetr thing to do at NIST which has the measurement facilities.
Professor Slocum has contacted NIST. We have not heard back yet.
These tests should quiet those who doubt my teachings. I love challenges and I follow up on what I say and don't just make noise and disappear.
Also Assistant Professor who took my Boston Glass a couple of years ago and scraped one of my HKA-18 straight-edge in the class did some tests after the class as shown in his article. I had not seen this info and I mentioned his tests would have been better if he had supported the SE on the Airy Points. He said when I come out to help they will retest it and see what happens. See his article below.
I intend to travel to MIT or NIST to help assist in these tests. I expect the conclusion of these tests will be published for future generations to see how an old method we professional and hobbyist scrapers use to vibrate during scraping by hitting a casting with a soft blow hammer to remove any stress during the scraping process or while a SE or cast Iron parts is stored improperly or stressed in some way.
I also intend to ask them to test thermal tests when one holds with your bare hand on cast iron bars. We had a discussion on this a few years ago. Rich
file:///C:/Users/richa/Downloads/StraightedgeCharReport%20(1).pdf
PS: I emailed Professor Bell and he said that the tests were not on his 55PPI scraped straight-edge. He had an undergrad scrape on it and apologized it was not as accurate as he wanted when the tests were made.
Pic's are students "ringing" SE's they are scraping during classes One at Kieth Ruckers and one at Bourn & Koch.
also casting of SE's we plan on sending to MIT or NIST.
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