Open PilotMatt opened 1 month ago
It turns out the ironing paths are in the obj, but they're half a layer height too low. If you increase ironing spacing to 0.5mm, you'll see where they are because they don't merge into a confusing single layer that's hard to recognize - they're separate lines that you can see between the main extrusions:
Here's a comparison of where they're shown in the slicer and where they appear in the obj:
And the project file and obj shown there:
ironingpathshalfheighttoolow.zip
I used layer heights 0.15 and 0.3 to test whether the half height difference is consistent.
awesome thank you! Is there a way to generate the toolpath OBJ from the CLI?
On Wed, Jul 31, 2024 at 7:27 AM Dave T. @.***> wrote:
It turns out the ironing paths are in the obj, but they're half a layer height too low. If you increase ironing spacing to 0.5mm, you'll see where they are because they don't merge into a confusing single layer that's hard to recognize - they're separate lines that you can see between the main extrusions: image.png (view on web) https://github.com/user-attachments/assets/ac61c34b-b903-44c7-9d8e-a3e69c8ba400 Here's a comparison of where they're shown in the slicer and where they appear in the obj: image.png (view on web) https://github.com/user-attachments/assets/1b227d89-9c27-4b4e-9dad-7d40af1b5bac image.png (view on web) https://github.com/user-attachments/assets/58b8ca6e-f828-4cd2-bfcf-1ac973cda334 And the project file and obj shown there: ironingpathshalfheighttoolow.zip https://github.com/user-attachments/files/16440534/ironingpathshalfheighttoolow.zip I used layer heights 0.15 and 0.3 to test whether the half height difference is consistent.
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(I'm just another user) there's an open issue indicating that you can't get paths out via the CLI, but I haven't tried it https://github.com/prusa3d/PrusaSlicer/issues/5076 In fact we seem to have a messy luxury - here's an older piece mentioning that the triangles are taken from the graphics card's data https://github.com/prusa3d/PrusaSlicer/issues/3046 and if that still pertains, we won't get anything via the command line. I think the ironing paths appearing in the centre of the previous extrusion is a mistake/bug, since it appears in the right place in the on-screen graphics. If you can share what you want to do with the data, there are other folk following the repository issues who might know something helpful.
I'm trying to use blender to render the OBJ in a script. No matter what I do, line spacing, setting iron flow to 100%, the ironing lines don't seem to show up. Attached render where the ironing flow is set to 100%. It's very visible in the gcode viewer. And I can see the ironing lines when I import it into Fusion. But they get lost in Blender.
Oh, bespoke product preview? Nice. I would expect prusa to enjoy a valuable application for the export function. So it's "just" a matter of adding half the layer height to the z coordinate of the triangles of the ironing pass. They're treated as part of the layer they're added to in the preview system so I guess that offset was lost in translation somewhere. If you iron it two different percentages and perform a diff, you'll presumably see which are the ironing triangles. If you're using a uniform layer height, that's your workaround for now, I guess.
Yes, it's something like that! :) https://auntlosupplyco.etsy.com
Good stuff. If you put together a pipeline for fixing the ironing location, you could post it to printables?
I didn't didn't actually fix anything My workaround is just print config with very narrow top infill lines!
Heh, this is the way.
Description of the bug
Using "Iron Topmost Layer" in the slicer and "Export Toolpaths to OBJ" ironing is never rendered out to the OBJ.
Project file & How to reproduce
Slice a file w/ Ironing on .
File -> Export -> Export toolpaths to OBJ. RESULT: No ironing on OBJ.
Checklist of files included above
Version of PrusaSlicer
Version 2.8.0+win64
Operating system
Win 11
Printer model
Custom Printer (used for Rendering without the Purge line)