Rhino 8 IGES export issue with Bochu tubepro

Rhino
1

Hello everyone,

I’m having a compatibility issue when exporting an IGES file from Rhino 8.

I created a tube model in Rhino 8 and exported it as an IGES (.igs) file. The file opens correctly in Rhino, but Bochu laser tube cutting software cannot import it. The software either reports an import error or fails to recognize the file.

For comparison, I tested exporting the same model from different CAD software:

SolidWorks exported IGES file → Bochu can import successfully.

Rhino 8 exported IGES file → Bochu cannot import.

ZW3D exported IGES file → Bochu cannot import.

This makes me think the issue may be related to Rhino’s IGES export settings, IGES entity types, or compatibility differences between different CAD software exports.

Software information:

Rhino version: Rhino 8

Target software: Bochu laser tube cutting software (version unknown)

Export format: IGES (.igs)

My questions are:

Are there recommended Rhino IGES export settings for better compatibility with CAM or laser tube cutting software?

Does Rhino export different IGES entity types compared with SolidWorks?

Are there specific IGES settings (such as entity type, surface tolerance, or solid export options) that can improve compatibility?

Has anyone encountered similar issues when exporting IGES files for laser cutting or tube cutting software?

I have attached:

Rhino model screenshots

IGES export settings

Bochu import error message

Any suggestions or advice would be greatly appreciated.

Thank you!

fc0ed369196b2f3aaa16cdda938e71cb
fc0ed369196b2f3aaa16cdda938e71cb1075×851 65.1 KB

D19x0.6x1100_（10pcs).igs (20.5 KB)

2

Is it possible the Bocha software only accepts arcs and straight lines? Draw only a rectangle and a circle and see if that will export across. Bocha does have a lot of limitations on its import, but you would need to ask them for more specifics on that.

Some CAM style software only work with lines and arcs. If it test as only lines and arcs, here is how to convert 2d lines: Preparing Files for Laser and Waterjet Cutting [McNeel Wiki]