DeadlyToad
Plastic
- Joined
- Feb 3, 2018
I have a tolerance of +/-.0005 on dark nylon casting. Temperature in the building seems to be pretty stable. I setup gage blocks for a bore gage and ran a part to size, then I used the CMM to check my bore and I am getting a variance of a .001 between the gage blocks and the cmm. Gage blocks have been verified on the cmm and a height gage, my guess is the spring loading on the bore gage to metal jo blocks. I was just going to set my bore gage up to the part and using it as a ring master. How would you guys check tight tolerance nylon casting bores?