On Sun, 26 Nov 2017 13:24:43 -0800 (PST), wrote:

It is baffling to me why most people here are saying day temperature has little effect on the metal. I was once told and also read that well ground gauge blocks can unite completely if left over night. This tells me that there is motion of atoms even at day temperature state of energy. I am only a toolmaker so I can't state with authority that curing of cast is important or not however I feel dismissing it based on laboratory tests conducted on limited time is fatal.


Oh its quite true and I agree...its a bit wierd why they would think
that.

I found a gage block that had been stacked on another gauge block at
least 70 yrs ago..and then forgotten... a 1x2 and a .750 x 750 that
had fallen down a hole in a lath and plaster wall sometime around
WW2...and I had a hell of a time getting them apart without damaging
them. When I did...the surfaces between them were as shiney as the
day they were packaged. They were marked Pratt and Whitney.


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus