Is there anyone who does not use titleblock tolerances?

[fsincox]

I am trying not to overload other threads so I started this one for this, Do any of you really not use title block tolerances on your drawings? What type of industries/parts/assemblies are they?
I myself am in aerospace now: many sizes of fans, small air valves and actuators. Very small quantities that the big guys leave behind, not large quantities. Previously, I was in large specialty machines and transfer line machine tools mostly for the auto industry. Huge castings and weldments, all kinds of machined parts, and high precision machining parts, again small runs not likely to throw away after making a large investment. I believe this is one reason I have seen such bad fabrication tolerance practices, always has to be 2 place dimensions. What does it mean? ABSOLUTELY NOTHING!! Just a picture of what you want and you take what you get.
Frank

 

[fsincox]

We had quite a discussion going about it a while back in the ISO group here thread182-247563 there was earlier discussion also, please feel free to add your comments, there.
Frank