Iterative Alignment Error

Also, don't use the slot directly, create a cast point from it and use that instead. The help file clearly states that slots are not recommended: Iterative Alignment Rules (hexagonmi.com)​

Thank you Neil.

Just one more silly question....

Say you're working with a CAD file and a physical fixture that has all of the A-Nets / 4-WAY / 2-WAY positional locator pins that are MMC and built square to grid.

First I do an iterative alignment off of the 3 tooling bushings built into the fixture with stamped nominals and make sure your vectors are 0,0,1 with 3 sample hits for each circle you are creating.... This aligns the fixture...

Next I go into DCC mode and manually take a hit on the A-Nets and find the nearest CAD button with Snap on for the vector points in the open feature window, however when I get to the 4-Way and 2-Way locating pins I'll just select those in CAD (I make the Slot into a Circle) and I don't take a surface hit as they usually don't have a plane or net accompanying them.

I then perform another Iterative Alignment off of the measured Datums and then go over the same features to make sure everything has fallen into spec within +/- 0.05mm

Is this a correct way of aligning the fixture and later measuring parts off of the fixture for part layouts?

Please correct me on anything if I am wrong.

Thank you.

Thank you Neil.

Just one more silly question....

Say you're working with a CAD file and a physical fixture that has all of the A-Nets / 4-WAY / 2-WAY positional locator pins that are MMC and built square to grid.

First I do an iterative alignment off of the 3 tooling bushings built into the fixture with stamped nominals and make sure your vectors are 0,0,1 with 3 sample hits for each circle you are creating.... This aligns the fixture...

Next I go into DCC mode and manually take a hit on the A-Nets and find the nearest CAD button with Snap on for the vector points in the open feature window, however when I get to the 4-Way and 2-Way locating pins I'll just select those in CAD (I make the Slot into a Circle) and I don't take a surface hit as they usually don't have a plane or net accompanying them.

I then perform another Iterative Alignment off of the measured Datums and then go over the same features to make sure everything has fallen into spec within +/- 0.05mm

Is this a correct way of aligning the fixture and later measuring parts off of the fixture for part layouts?

Please correct me on anything if I am wrong.

Thank you.