There are several slots cut out on a rectangular plate, and the distance between the edges of the slots are the datums. So, in an attempt to create a constructed width to use as my datums, I created lines by taking hits along the edge and selected the option for them to projected onto a feature (a plane along the top face of the plate). I have a picture from the program shown below:
As you can see, the first constructed width was created without a hitch, but the for the second one (from Lin_A1_2 to Lin_A1_4), PC-DMIS gives the error "Surface vectors are not opposed" and refuses to make the feature. I'm not really sure what this means and am hoping someone can help me through this.
If it helps, here are the directional vectors for each of the four lines:
Lin_A1_1:
I: 0.002825
J: -0.9999959
K: -0.000436
Lin_A1_2:
I: -0.9999944
J: -0.0031568
K: -0.0011256
Lin_A1_3:
I: 0.0014157
J: 0.9999989
K: 0.0004408
Lin_A1_4:
I: 0.9999808
J: -0.0060896
K: 0.0011215
Only the holes in the picture were machined, the datum features were torch cut and the top of the plate was not faced off (i.e. it was rusted over). I know that's not ideal for making datums, but it was how the print said to do it, and the holes were cut after being lined up along those edges. I'm hoping that the error has nothing to do with that fact.
