How do I keep my fillets from being exploded on save?

When make the file, my corners look like so, and I want to keep them as such when saving the file as a DXF for the manufacturing team.

I am trying to avoid the example below upon opening the file after I saved it as the example above.


How to I set up Rhino so that it doesn’t keep turning my curves/arcs into hundreds of lines?

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imo, use .igs/.iges instead :slightly_smiling_face:

That’s not an option. Has to be DXF. I’m looking for advice for how to configure the DXF save output, not a workaround.

Use the “Natural” setting when you export to DWG. That will keep the original structure of the arcs.

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I have that already (For DXF - my company can’t use any other filetype).
Here are my settings

Use these settings:

Also if you uncheck the “maximum angle” settings, in any case none of your curves will be tessellated.

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I actually tried Polylines with Bulge Arcs just before your reply and that seemed to do the trick.
Thanks for the clean reply! I’ll put those settings in.

(I also have to avoid splines but that’s already a solved issue)

You chose to modify the original structure of the curves by activating the tessellation and simplifying the arcs and curves, hence they are no longer natural. These settings must be turned off.

They are off as well. The Polycurves setting “Polycurves w/Bulge Arcs” was what I needed the most.

You don’t have to select “Polycurves w/Bulge arcs” to export the curves and arcs as the originals. “Splines” does the job perfectly fine. These are the settings that I use for exporting to DWG. Any other settings causes some issues with various CAM software for making g-codes for laser cutting and CNC-milling. These are flawless.