What does this warning mean?

jack_erhart

Just did a bunch of work, and a warning came up that said. "Could not complete this function due to system limits."
Whose systems limits? Mine or Onshape?
All I was doing is creating faces off of a CAD drawing, and then everything I had done up to that point turned red, and the warning came up. I was creating a sketch, and could not confirm it. 
All work lost :-(

In the past I had done much more creation then what I had just done, so I found it odd.

NeilCooke

There is an imposed 1km cube that you have to work within - 500m in each direction from the origin.

EDIT: if it's not that then it may be the sketch entity limit (can't remember what that is - 1000 entities?)

jack_erhart

I was creating faces off of a CAD drawing. I was no where close to either one of those numbers. Which Is why I thought it was strange. And to have it eleminated all of my previous work once the warning came up seems very counterproductive, don't you think? A warning, and then a save out of ability would have been better.

jack_erhart

NeilCooke

Yeah, that's the 1km limit - do you have it at the right scale?

NeilCooke

Or, more likely, where is the origin?

dirk_van_der_vaart

I have made an example for you how to start with an import.


https://cad.onshape.com/documents/7692e358d58547b58a5acd56/w/77fcd3f4118dfdee6c528bc8/e/69debe85ad43860b804764b1
In sketch1 you import the dxf and you dimension 1 part, I did 1 wheel size R 350, the dxf was 1.22??? mm , so that resized the total sketch.
After that you can start making other sketches by selecting part's of the total dxf, you can do this by using the USE command, see help file for explanation.
You can also make other Part Studio's by using the derived command.
So the rule is , define the size of the original dxf , you only have to be sure about one size of the object, the rest resizes.
And to make it easier use only parts of the original sketch to make the solid part's

jack_erhart

NeilCooke said:

Yeah, that's the 1km limit - do you have it at the right scale?

I'm modeling every thing full size, because I make different scale versions once completed.

jack_erhart

NeilCooke said:

Or, more likely, where is the origin?

The origin is right inbetween the two drive wheel suspension assemblies.

jack_erhart

dirk_van_der_vaart said:

I have made an example for you how to start with an import.


https://cad.onshape.com/documents/7692e358d58547b58a5acd56/w/77fcd3f4118dfdee6c528bc8/e/69debe85ad43860b804764b1
In sketch1 you import the dxf and you dimension 1 part, I did 1 wheel size R 350, the dxf was 1.22??? mm , so that resized the total sketch.
After that you can start making other sketches by selecting part's of the total dxf, you can do this by using the USE command, see help file for explanation.
You can also make other Part Studio's by using the derived command.
So the rule is , define the size of the original dxf , you only have to be sure about one size of the object, the rest resizes.
And to make it easier use only parts of the original sketch to make the solid part's

Thank you. That is a might fine example you have there.

jared_ikin

Hi Jack, I'm sorry to revive an old thread, but I was experiencing a similar problem and came looking for answers. I may have stumbled upon my own answer however: if I draw an arc with too shallow a curve, the center point generated by Onshape will be beyond the cube limit, and will send the warning listed above. I hope this helps any other amateur draftsmen in future! 😄

rick_randall

@jared_ikin - I would like to thank you for that explanation. I've had that same problem before, and didn't get a proper answer, but I think you just solved it for me. Maybe I could use a spline, instead of an arc (no center-point) for these special cases.

Cheers