Sketch could not be solved after Offset Tool
Tygan
Member Posts: 11 ✭✭
Hi,
I am trying to offset a projected path, but after using the offset tool the sketch is broken. Looks like it overdefined the new path.
Can someone tell me what I am doing wrong?
I am trying to offset a projected path, but after using the offset tool the sketch is broken. Looks like it overdefined the new path.
Can someone tell me what I am doing wrong?
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Best Answers
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For whatever reason, it really doesn't like offsetting the spline - can the spline be approximated with two tangent arcs in your first sketch?Senior Director, Technical Services, EMEA5
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@Tygan
Here is one way of doing it. I don’t know exactly what you want to do — if you want to make a curb or recess around the edge. But at least this is a starting point5
Answers
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Instead of individually selecting each edge, click-drag one of the edges, see if that helps0
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I am not sure what you mean with "click-drag one of the edges"
Selecting all Edges like this does not work:
Offsetting each Edge individually does not break the Sketch but the Edges are not connected:
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Watch this video: https://learn.onshape.com/learn/course/fundamentals-sketching/sketch-tools/additional-sketch-toolsSenior Director, Technical Services, EMEA0
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I imagine it is something to do with offsetting the spline. If you paste the doc URL here we can take a look.Senior Director, Technical Services, EMEA0
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Here is the Link: https://cad.onshape.com/documents/0c0d80dd73ef05ffcf9dd817/w/0d574aee88120cb1a1c788d2/e/b62aa3589c67efaf7458e06e
Thanks for the help so far0 -
For whatever reason, it really doesn't like offsetting the spline - can the spline be approximated with two tangent arcs in your first sketch?Senior Director, Technical Services, EMEA5
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@Tygan
Here is one way of doing it. I don’t know exactly what you want to do — if you want to make a curb or recess around the edge. But at least this is a starting point5 -
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NeilCooke said:For whatever reason, it really doesn't like offsetting the spline - can the spline be approximated with two tangent arcs in your first sketch?
It is working with two tangent arcs but not as smooth as the spline. I have to experiment a bit and find the sweet spot where the arcs have to touch.
Thanks for the help!0 -
This is what I want to do. Looks like the offset tool is working on the original sketch and it does not like the projected lines.steve_shubin said:@Tygan
Here is one way of doing it. I don’t know exactly what you want to do — if you want to make a curb or recess around the edge. But at least this is a starting point
Thank you0 -
Another option is to extrude a body or surface, and use Offset on the outside faces - sometimes Boolean operations are more robust than offset sketches.0
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You need to remove all constraints on the lines first.0
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@Tygan
I was curious since I've un into this before. Initially I tried offsetting the splines separate from the lines. This worked for the first iteration but failed when I tried to repeat for another size down. Leaves a sketch that's not closed and splines that can't be trimmed to close sketch.
Thinking of Romeo's comment.
Next I tried using a zero offset surface. Then move boundary to give an equivalent to offset sketch entities. Now extrude that surface. Seams to be very robust and could be repeated many times.
https://cad.onshape.com/documents/7fb24d72c892d33717e21947/w/32177e12b69dc58632581df4/e/1d7abdc3178700278bb0e63e
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