GD&T (or other) callout

[kgwhipp]

Hello All,

Take a look at the attachment. I have hundreds of these pillars that will be positioned and adjusted using studs with leveling nuts.

I need the red face of the pillars to all lay in the same plane as one another within 1/32" of an inch. (We usually do this by just projecting out a laser line).

The other important feature is that the red pads set a certain distance DOWN from the blue face. But the blue face will probably be very sloppy (+/- 1/2" or so).

I know my attempt isn't right here because the other plates can be out of plane but still meet parallelism.

How can I best describe my intent?



-Kevin

 

[3DDave]

The more applicable control is profile of a surface (symbol looks like a sunrise with a horizon.) No need to designate any of them as a datum or refer to a datum, just point to one and use the FCF [profile of surface symbol|.032] TYPICAL or X00 PLACES and use a directly toleranced dimension down from the blue face to the pads, presuming the blue face surrounds the pads. If not, then set the entire group of pads as a datum and use a profile of surface control on the blue surface relative to the entire group of pads with a 1 inch tolerance and a basic dimension between the two.