My waterjet vendor asked if I could convert splines to arcs in order to cut some 1/16-inch thick carbon fiber sheet, so in Rhino I used the convert command and had the tolerance set to 0.001, the same as the units in Properties. After the conversion process finished, I saved the .3dm file, then saved it, accepting all defaults, as dwg, dxf, and pdf and uploaded the “save as” files to his dropbox.
He sent me an email stating: “uploaded to my cutting program. I have attached a screenshot of what I get.”
Here’s the screenshot:
Here’s a link to the dropbox containing the 3dm from which the dwg, and the dxf format files were derived:
link to dropbox
All help is appreciated.
Thanks,
David
There are a few issues although none that I see that are affecting the shape of the arcs, at least in the applications I have viewed them in.
The chevron shapes are all duplicated and there are some random point or very small segments that are separate entities on the perimeter of the smaller rings.
Perhaps cleaning that up will make a difference in the way the arcs are drawing in the receiving application, although I suspect not.
The arcs and circles are not large, so I could not attribute the issue with a very large size.
Perhaps it is tolerance related, you could try importing the DWG (after you clean it up) into a Rhino file with 5 or 6 decimal place accuracy instead of 3 and then save a new DWG.
If that doesn’t solve it, break the circles / arcs into 4 sections each to see if that makes a difference.
If I run SelBadObjects on your file, 360 curves select. If I run SelShortCrv with a tolerance of 0.001, on your file I get 576 curves selected… If I run SelOpenCrv on your file I get 2377 curves selected, some of which in theory should be closed.
So yes, the file does need to be “cleaned up”…
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Thanks Helvetosaur, those three commands did the trick.
As always, very much appreciated.
Regards,
David
