If the depth of a counterbored hole in the top face of a plate is directly toleranced, what is the proper way to measure the depth? Is it to a tangent plane established by the top face of the plate or would it be more localized e.g. measuring the depth with the tail end of a caliper? According...
In "The Ultimate GD&T Pocket Guide, 2nd Edition" by Alex Krulikowski, on page 13 there is a table that distinguishes Regular vs Irregular features of size. One distinguishing feature is "May Be Defined With Basic Dimensions and Profile" and it shows No for Regular FOS, and Yes for Irregular FOS...
I'm trying to understand why I am seeing cracks around bolt holes in a polycarbonate part that is made out of 1/8" thick sheet. I understand that PC is subject to environmental stress cracking, which involves chemicals accelerating small micro cracks under tension. What I'm struggling with is...
