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Parallel Lines with dimension use angle instead of distance.
anddy_archer
Member Posts: 8 ✭✭
So, I've used OnShape on and off over the years and I've never had this problem: I have a rectangle sketch on one plane, then on an offset plane from that sketch I make another rectangle that has it's edges relative to that original rectangle. Both rectangles are orthogonal so the sides are parallel. Or so I thought. When I set the distance between the sides, I get an angle dimension that makes no sense: it's an angle with a value that is half of the value I set. In my linked example document, I have the offending dimensions as driving and then non-driving dimensions from corner-to-edge show that the distance is not what I've set.
I can constrain the sides to be parallel to make sure, and that doesn't over-constrain the drawing. So something is amiss here. I just don't know what. It feels like a bug. Any ideas?
Here is an example document:
https://cad.onshape.com/documents/0056c70b6cc07cd5116922d1/w/c983bd2f2b4ef6bd9277920c/e/ef7d9440db2c1b286bb97254?renderMode=0&uiState=6340742219526f37e6637638
I can constrain the sides to be parallel to make sure, and that doesn't over-constrain the drawing. So something is amiss here. I just don't know what. It feels like a bug. Any ideas?
Here is an example document:
https://cad.onshape.com/documents/0056c70b6cc07cd5116922d1/w/c983bd2f2b4ef6bd9277920c/e/ef7d9440db2c1b286bb97254?renderMode=0&uiState=6340742219526f37e6637638
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Best Answer
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EvanReese
Member, Mentor Posts: 2,117 ✭✭✭✭✭
If I understand what's tripping you up, it's a feature, not a bug. If you dimension to a construction line, and mouse over it, you get a diametric dimension instead of a radial one. It treats it as an axis of rotation or symmetry, which is really handy sometimes.
Evan Reese0
Answers
I'm futzing around trying to repeat what you are doing, but no hover or clicking is letting me replicate your gif. Thank you for the gif btw. I'm glad this isn't a bug, just my ignorance--as I thought.
** OK, I kept trying and I got the missing part, I'll need to set that when I make the dimension. My problem is that I often just tap-tap-confirm on my touchpad and it gets set into the rotation mode. I'll just need to zoom in and make sure I put the dimension on the inside.