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I'm trying to sweep a profile curve along a path curve, where the path curve (the one to which I'll apply the bevel) is a simple set of straight lines and right angles.

When I set the path curve's Bevel Object to the profile curve, I get roughly the desired result, except that the size of the profile curve gets bigger as it approaches the ends of the path. Why is that, and what do I do about it? (I tried setting a straight taper curve, but that doesn't help.)

Here's a simple blend file showing the problem:

enter image description here

Thanks!

Community
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Dave Feldman
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  • Usually if I am working with a Curve, I am able to select a control point and use Alt-S to Shrink/Fatten the curve at that point. Yours seems to be locked somehow. – Craig D Jones Jan 05 '17 at 02:08
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    Please [edit] your question add images of the issue. Do not make the question dependent on people downloading your file only. And in the future use http://blend-exchange.giantcowfilms.com/to make a permanent link to the file. If the link to your file disappears from the current host then your question will not be useful for other users who are facing a similar problem/ –  Jan 05 '17 at 03:52
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    the profile doesn't get "bigger as it approaches the ends" it actually gets narrower in tight corners. It's a limitation of the current bevel system, see the comment above for more details. – Duarte Farrajota Ramos Jan 05 '17 at 03:58
  • See what happens when you turn on 2D in the Curve. – hawkenfox Jan 05 '17 at 13:17
  • @ Craig D Jones ... yeah I was wondering why his curve couldn't do the Alt-S modification on the ends but I made a copy of the original curve and then it worked! Strange. – hawkenfox Jan 05 '17 at 13:24
  • @cegaton Edited as requested. Thanks all for the quick responses. – Dave Feldman Jan 06 '17 at 05:59
  • Hi there, I am involved in addressing this issue in Blender. This is still in development but closing in on a solution and that'd be great if you could provide some feedback here: https://devtalk.blender.org/t/curve-to-mesh-node-even-thickness-feedback-thread/27271 - Thanks in advance! – Bruno Jan 19 '23 at 15:00

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