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Thanks Guys!!

@3DDave: It is ASME. Let me use different words, Yes, they can be on different surfaces, but they are on different PLANES.

@ctopher: There are just Vehicle co-ordinate system and just shows what datum is restricting what axis i.e. C/C: Cross-car, F/A: Fore-Aft, U/D: Up-Down. For this thread, please ignore these directions for now.

Hey everyone, I’m back with a bit of confusion and hope you can help me out. I'm still learning GD&T, so apologies if this seems like a basic question. I received a component drawing where the primary datums are placed on two different surfaces, and the C datum is on a curved surface. My...

Guys, lets ignore the positional callout for now. Can you guys give your views on the datum scheme. Since the dia. of threaded hole (B & C) is not given, what should we go with

Yes, same issues here everyday. Prints coming from OEM's are all same like these.

Hello guys. We just got a new plastic part and we were reviewing its drawing when we noticed that there is positional callout at the corner and it says TYP 4x. Since it is a continous edge, I am wondering why it says 4x. ALso, how could we measure positional tolerance at the corner. Any ideas...

NO, you dont have to make it firm. I was just trying to understand what you mentioned in your last message. Was wondering where the flatness callout would be

3DDave: That is a very well explained and detailed view. Thank you. One thing I want to confirm is where are you saying the primary datum should be? I did not follow it, I am sorry, new to this.

Thank you guys for the help. I have contacted the Gauge-guys and they are coming up with a concept. If it still didnt work, I will contact the customer to change the datum scheme in the print

SO, how do you think should the datums A & B be mounted in the existing scheme. Maybe use diamond locating pins??

Sorry for not giving the full picture, please see attached sketch to see what C & D is. We are developing checking fixture for the whole mount and wanted to know how to mount the part on A & B.https://files.engineering.com/getfile.aspx?folder=74046a2e-9afa-478e-8a0c-cb3a59f2b160&file=SLOT1.jpg

I have a Blow Molded part with A & B datum given as center point of a Slot. This slot opening does not have any inner dimensions but only profile callout on the outside since it is assembled in a housing. Now, I am working with one of our Gauge manufacturers who is asking if this is at RFS or...