Issue with Curves in grasshopper

Rhino_at_Westend · May 17, 2022, 10:27am

Hi,

I am trying to use this script to offset then add circular sections for our CNC operating but I can’t quite figure out where it is going wrong.

This is what i’m trying to achieve.

But it creates a curve that can’t be joined with these gaps and bits that need to be trimmed. Any help would be much appreciated.

In the longer term I would like to create shapes more like this (better for the CNC) so any ideas for this would also be great. Thanks!

James

atair · May 17, 2022, 10:31am

works just fine here… two closed planar curves come out - probably a precision issue on your side - either you work far from zero or some document tolerances are off

Rhino_at_Westend · May 17, 2022, 10:34am

It seems inconsistent, This is the document I am using it on and some work fine and others don’t.

atair · May 17, 2022, 10:36am

without a file i cant really say more…

Rhino_at_Westend · May 17, 2022, 10:41am

This is part of the file with the same thing happening, thanks for your help!

Example.3dm (132.8 KB)

atair · May 17, 2022, 10:48am

your geometry is not on Z=0. Its 1.8 meters above - that’s why it doesn’t work… move it down and all is fine

Rhino_at_Westend · May 17, 2022, 10:53am

Thanks so much, perfect

Rhino_at_Westend · May 17, 2022, 11:05am

Any ideas on how to achieve a round like the last picture in the post? When i’m in rhino I use a 3 point circle but I cant work out how to do this in grasshopper