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You do not necessarily HAVE to have the feature normal to the first datum in the FCF, do you? Say you have a BASIC angle into which a hole is bored. Why is it illegal to use the BASIC angle to control the orientation or the normailty of the hole?
I need to get the standard in my hand. See where it is called illegal. If all of this stuff is illegal then that is a mistake IMO and does not serve the community.
Wait a minute. Page 60 of my trusty GD&T handbook Y14.M-1994 shows TP as a bi-directional control (single Axis) on ROUND features. A round feature should dictate diametric IF what you are saying is correct. I think it's OK man. It's OK to use single axis tp with round features.
I will investigate the corner point further and may well conced it is illegal.
You do not necessarily HAVE to have the feature normal to the first datum in the FCF, do you? Say you have a BASIC angle into which a hole is bored. Why is it illegal to use the BASIC angle to control the orientation or the normailty of the hole?
I need to get the standard in my hand. See where it is called illegal. If all of this stuff is illegal then that is a mistake IMO and does not serve the community.
Wait a minute. Page 60 of my trusty GD&T handbook Y14.M-1994 shows TP as a bi-directional control (single Axis) on ROUND features. A round feature should dictate diametric IF what you are saying is correct. I think it's OK man. It's OK to use single axis tp with round features.
I will investigate the corner point further and may well conced it is illegal.
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