Now we can't export dxf file without seam allowance?

najdmie · January 28, 2025, 6:16am

I noticed in the latest version 2025.1.27.201 the exported DXF file always include the seam allowance whether I hide them or not in piece mode. Is this intentional or a bug? I’m importing it into Clo3D where the seam allowances are not needed.

A workaround I found is to check the built-in seam allowance option, but I need to do it for every piece. But it nice that when the built-in option is checked, the notches are always included. Previously whenever I want the notches, I need to export with seam allowances because the notches disappear without seam allowance. I hope I know this option sooner.

Grace · January 28, 2025, 6:27am

Hmm… I still don’t know anything about DXF, but perhaps @slspencer, @Douglas or @Evans will be by a bit later to reply to you.

slspencer · January 28, 2025, 8:21pm

Hi @Robin, thanks for keeping us informed. I exported pattern pieces with no seam allowance to DXF R10, viewed it in edrawings, free from Dassault Systems/SolidWorks. The lines are faint.

Seems ok.

Here’s the DXF exported with a notch in a pattern piece. I set the Seam Allowance to 0 so that the notch will show up on the seamline.

Here’s a closeup of the notch

slspencer · January 28, 2025, 8:40pm

@Douglas & @Evans - was a change made to the seam allowance in the export recently?

Evans · January 28, 2025, 11:03pm

A PR affecting the display of the seamlines and the notches has been merged 2 months ago, it could be related

I can’t take a look at it right now unfortunately. Maybe @Douglas will have the time to take a quick look at it before I can?

najdmie · January 29, 2025, 2:09am

Thank you all for looking into this.

Maybe it is more of Clo3D problem. Below is my finding:

(Below) R10 flat in Clo3D. 1 cm seam allowance. Exported while the seam allowance was hidden. As intended, the seam allowance was not shown but I manually measured it, actually the seam allowance was included but not indicated with lines. Very heavy with a lot of points along curves. The program became very laggy even with my Ryzen 9 CPU. The notches are not showing. I still can’t find an import setting to solve this. r10 flat

(Below) Similar DXF file as above in Inkscape. The seam allowance and notches were visible. Smooth curves without any points. I could move the pattern around easily and inscape ran smoothly.

(Below) 2013 AAMA. 1 cm seam allowance. Exported while the seam allowance was hidden. Seam allowance and notches visible. Minimal points along curves. Program ran smoothly. Similar finding in Inscape. 2013 AAMA.jpg

(Below) 2013 AAMA. Built-in seam allowance. Notches visible. Minimal points along curves. Program run smoothly.