Can some of you please download and check if this file f6 renders. This is a bit heavy 4mb file: https://github.com/sprabhakar2006/openSCAD/blob/main/render_test.scad f6 render for this file is not working for me. I running openSCAD 2025.08.09 (git 895cd8f96) version on macbook air M1

On 8/16/25 22:33, Sanjeev Prabhakar via Discuss wrote: > Can some of you please download and check if this file f6 renders. > This is a bit heavy 4mb file: > > https://github.com/sprabhakar2006/openSCAD/blob/main/render_test.scad > > f6 render for this file is not working for me. > > I running openSCAD 2025.08.09 (git 895cd8f96) version on macbook air M1 > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email todiscuss-leave@lists.openscad.org It does not render here. OpenSCAD <https://www.openscad.org/> version 2025.07.15.snap, RockyLinux 9.6, 2011 MacBook Pro w/16G RAM The preview comes up almost immediately. Render hangs at 19/1000. One CPU is pegged at 100%. Jeff

Last proper release version 2021.01 on Windows 10. Preview fine. Render started and after ~3 minute I'm at 130/1000. I'll let it run for a while. On Sun, 17 Aug 2025 at 16:18, Jeff Ross via Discuss < discuss@lists.openscad.org> wrote: > On 8/16/25 22:33, Sanjeev Prabhakar via Discuss wrote: > > Can some of you please download and check if this file f6 renders. This is > a bit heavy 4mb file: > > https://github.com/sprabhakar2006/openSCAD/blob/main/render_test.scad > > f6 render for this file is not working for me. > > I running openSCAD 2025.08.09 (git 895cd8f96) version on macbook air M1 > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org > > It does not render here. > OpenSCAD <https://www.openscad.org/> version 2025.07.15.snap, RockyLinux > 9.6, 2011 MacBook Pro w/16G RAM > > The preview comes up almost immediately. Render hangs at 19/1000. One CPU > is pegged at 100%. > > Jeff > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org

Renders in 26 seconds with the Manifold backend here. -Marius

Thanks everyone I have problem with f6 render and it seems i am not alone facing the same issue. I have manifold selected BTW. Any solution? Please let me know Regards On Sun, 17 Aug, 2025, 10:31 pm Marius Kintel, <marius@kintel.net> wrote: > Renders in 26 seconds with the Manifold backend here. > > -Marius > >

It could be using too much memory - could you try slimming down the model a bit and see if you can get a smaller version to work? -Marius > On Aug 17, 2025, at 13:06, Sanjeev Prabhakar <sprabhakar2006@gmail.com> wrote: > > Thanks everyone > I have problem with f6 render and it seems i am not alone facing the same issue. > I have manifold selected BTW. > Any solution? Please let me know > Regards > > > On Sun, 17 Aug, 2025, 10:31 pm Marius Kintel, <marius@kintel.net <mailto:marius@kintel.net>> wrote: >> Renders in 26 seconds with the Manifold backend here. >> >> -Marius >>

Parsing design (AST generation)... Compiling design (CSG Tree generation)... Rendering Polygon Mesh using CGAL... ERROR: The given mesh is not closed! Unable to convert to CGAL_Nef_Polyhedron. ERROR: The given mesh is not closed! Unable to convert to CGAL_Nef_Polyhedron. Geometries in cache: 47 Geometry cache size in bytes: 9948176 CGAL Polyhedrons in cache: 1 CGAL cache size in bytes: 88456696 Total rendering time: 0:41:44.608 Top level object is a 3D object: Simple: yes Vertices: 61629 Halfedges: 198678 Edges: 99339 Halffacets: 75424 Facets: 37712 Volumes: 2 Rendering finished. ==== The memory reported by Windows TaskManager says 1.1Gb An empty OpenSCAD 40Mb, after reading the file 130Mb. I did another render, and get new logs: : Rendering Polygon Mesh using CGAL... PolySet has nonplanar faces. Attempting alternate construction PolySet has nonplanar faces. Attempting alternate construction : Previous run I did a preview first (the run time seems to be following the same "speed" .. but cant wait for it to finish) On Sun, 17 Aug 2025 at 18:43, Michael Möller <private2michael@gmail.com> wrote: > Last proper release version 2021.01 on Windows 10. > Preview fine. > Render started and after ~3 minute I'm at 130/1000. I'll let it run for a > while. > > > On Sun, 17 Aug 2025 at 16:18, Jeff Ross via Discuss < > discuss@lists.openscad.org> wrote: > >> On 8/16/25 22:33, Sanjeev Prabhakar via Discuss wrote: >> >> Can some of you please download and check if this file f6 renders. This >> is a bit heavy 4mb file: >> >> https://github.com/sprabhakar2006/openSCAD/blob/main/render_test.scad >> >> f6 render for this file is not working for me. >> >> I running openSCAD 2025.08.09 (git 895cd8f96) version on macbook air M1 >> >> _______________________________________________ >> OpenSCAD mailing list >> To unsubscribe send an email to discuss-leave@lists.openscad.org >> >> It does not render here. >> OpenSCAD <https://www.openscad.org/> version 2025.07.15.snap, RockyLinux >> 9.6, 2011 MacBook Pro w/16G RAM >> >> The preview comes up almost immediately. Render hangs at 19/1000. One CPU >> is pegged at 100%. >> >> Jeff >> >> _______________________________________________ >> OpenSCAD mailing list >> To unsubscribe send an email to discuss-leave@lists.openscad.org > >

Thanks Michael That means it does render after a long time but practically unusable On Sun, 17 Aug, 2025, 11:39 pm Michael Möller, <private2michael@gmail.com> wrote: > Parsing design (AST generation)... > > Compiling design (CSG Tree generation)... > > Rendering Polygon Mesh using CGAL... > > ERROR: The given mesh is not closed! Unable to convert to > CGAL_Nef_Polyhedron. > > ERROR: The given mesh is not closed! Unable to convert to > CGAL_Nef_Polyhedron. > > Geometries in cache: 47 > > Geometry cache size in bytes: 9948176 > > CGAL Polyhedrons in cache: 1 > > CGAL cache size in bytes: 88456696 > > Total rendering time: 0:41:44.608 > > Top level object is a 3D object: > > Simple: yes > > Vertices: 61629 > > Halfedges: 198678 > > Edges: 99339 > > Halffacets: 75424 > > Facets: 37712 > > Volumes: 2 > > Rendering finished. > > ==== > > The memory reported by Windows TaskManager says 1.1Gb > > An empty OpenSCAD 40Mb, after reading the file 130Mb. > > I did another render, and get new logs: > > : > > Rendering Polygon Mesh using CGAL... > > PolySet has nonplanar faces. Attempting alternate construction > > PolySet has nonplanar faces. Attempting alternate construction > > : > > Previous run I did a preview first (the run time seems to be following the > same "speed" .. but cant wait for it to finish) > > > > On Sun, 17 Aug 2025 at 18:43, Michael Möller <private2michael@gmail.com> > wrote: > >> Last proper release version 2021.01 on Windows 10. >> Preview fine. >> Render started and after ~3 minute I'm at 130/1000. I'll let it run for a >> while. >> >> >> On Sun, 17 Aug 2025 at 16:18, Jeff Ross via Discuss < >> discuss@lists.openscad.org> wrote: >> >>> On 8/16/25 22:33, Sanjeev Prabhakar via Discuss wrote: >>> >>> Can some of you please download and check if this file f6 renders. This >>> is a bit heavy 4mb file: >>> >>> https://github.com/sprabhakar2006/openSCAD/blob/main/render_test.scad >>> >>> f6 render for this file is not working for me. >>> >>> I running openSCAD 2025.08.09 (git 895cd8f96) version on macbook air M1 >>> >>> _______________________________________________ >>> OpenSCAD mailing list >>> To unsubscribe send an email to discuss-leave@lists.openscad.org >>> >>> It does not render here. >>> OpenSCAD <https://www.openscad.org/> version 2025.07.15.snap, >>> RockyLinux 9.6, 2011 MacBook Pro w/16G RAM >>> >>> The preview comes up almost immediately. Render hangs at 19/1000. One >>> CPU is pegged at 100%. >>> >>> Jeff >>> >>> _______________________________________________ >>> OpenSCAD mailing list >>> To unsubscribe send an email to discuss-leave@lists.openscad.org >> >>

Roger. 

On Mon, Aug 18, 2025 at 07:49:56AM +0530, Sanjeev Prabhakar via Discuss wrote: > Thanks Michael > That means it does render after a long time but practically unusable I tested the model on my work-computer while I was at home. I gave up watching the screen not-change, but when I arrived at work maybe 24h later it was rendered! Anyway, the output in the openscad window is: Parsing design (AST generation)... Compiling design (CSG Tree generation)... Rendering Polygon Mesh using Manifold... ERROR: [manifold] Input mesh is not closed! ERROR: [manifold] Surface_mesh -> Manifold conversion failed: NotManifold ERROR: [manifold] Input mesh is not closed! ERROR: [manifold] Surface_mesh -> Manifold conversion failed: NotManifold Geometries in cache: 69 Geometry cache size in bytes: 9927040 CGAL Polyhedrons in cache: 0 CGAL cache size in bytes: 0 Total rendering time: 0:00:02.674 Top level object is a 3D object: Facets: 68578 Rendering finished. So... 3 things: * Manifold thinks it is not manifold. * the render time is not recorded accurately. I didn't give up /that/ fast. I have just re-run my test and this time it previewed taking 10:45 (645 seconds) to preview and then render (F6) in... lets take openscad's word for it, under 3 seconds. Openscad recorded 1 second and 24 milliseconds of "render time" for the preview. That is about 99.7% wrong. Manifold warns, cgal just fails and returns "no geometry". So "completely no results" is consistent with CGAL F6 render. Would exporting the manifold output result in a broken STL that might be fixable? Or maybe help in finding where the original fails to be manifold? IMHO, CGAL was the cause of some meshes ending up non-manifold. Switching to Manifold has helped a lot. Roger. > On Sun, 17 Aug, 2025, 11:39 pm Michael Möller, <private2michael@gmail.com> > wrote: > > > Parsing design (AST generation)... > > > > Compiling design (CSG Tree generation)... > > > > Rendering Polygon Mesh using CGAL... > > > > ERROR: The given mesh is not closed! Unable to convert to > > CGAL_Nef_Polyhedron. > > > > ERROR: The given mesh is not closed! Unable to convert to > > CGAL_Nef_Polyhedron. > > > > Geometries in cache: 47 > > > > Geometry cache size in bytes: 9948176 > > > > CGAL Polyhedrons in cache: 1 > > > > CGAL cache size in bytes: 88456696 > > > > Total rendering time: 0:41:44.608 > > > > Top level object is a 3D object: > > > > Simple: yes > > > > Vertices: 61629 > > > > Halfedges: 198678 > > > > Edges: 99339 > > > > Halffacets: 75424 > > > > Facets: 37712 > > > > Volumes: 2 > > > > Rendering finished. > > > > ==== > > > > The memory reported by Windows TaskManager says 1.1Gb > > > > An empty OpenSCAD 40Mb, after reading the file 130Mb. > > > > I did another render, and get new logs: > > > > : > > > > Rendering Polygon Mesh using CGAL... > > > > PolySet has nonplanar faces. Attempting alternate construction > > > > PolySet has nonplanar faces. Attempting alternate construction > > > > : > > > > Previous run I did a preview first (the run time seems to be following the > > same "speed" .. but cant wait for it to finish) > > > > > > > > On Sun, 17 Aug 2025 at 18:43, Michael Möller <private2michael@gmail.com> > > wrote: > > > >> Last proper release version 2021.01 on Windows 10. > >> Preview fine. > >> Render started and after ~3 minute I'm at 130/1000. I'll let it run for a > >> while. > >> > >> > >> On Sun, 17 Aug 2025 at 16:18, Jeff Ross via Discuss < > >> discuss@lists.openscad.org> wrote: > >> > >>> On 8/16/25 22:33, Sanjeev Prabhakar via Discuss wrote: > >>> > >>> Can some of you please download and check if this file f6 renders. This > >>> is a bit heavy 4mb file: > >>> > >>> https://github.com/sprabhakar2006/openSCAD/blob/main/render_test.scad > >>> > >>> f6 render for this file is not working for me. > >>> > >>> I running openSCAD 2025.08.09 (git 895cd8f96) version on macbook air M1 > >>> > >>> _______________________________________________ > >>> OpenSCAD mailing list > >>> To unsubscribe send an email to discuss-leave@lists.openscad.org > >>> > >>> It does not render here. > >>> OpenSCAD <https://www.openscad.org/> version 2025.07.15.snap, > >>> RockyLinux 9.6, 2011 MacBook Pro w/16G RAM > >>> > >>> The preview comes up almost immediately. Render hangs at 19/1000. One > >>> CPU is pegged at 100%. > >>> > >>> Jeff > >>> > >>> _______________________________________________ > >>> OpenSCAD mailing list > >>> To unsubscribe send an email to discuss-leave@lists.openscad.org > >> > >> > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org -- ** R.E.Wolff@BitWizard.nl ** https://www.BitWizard.nl/ ** +31-15-2049110 ** ** Verl. Spiegelmakerstraat 37 2645 LZ Delfgauw, The Netherlands. ** KVK: 27239233 ** f equals m times a. When your f is steady, and your m is going down your a** is going up. -- Chris Hadfield about flying up the space shuttle. ** 'a' for accelleration.

     Roger.

Finally f6 render works and I think this could be a generic solution to the filleting problem, with some higher resolution (with python support obviously) Attached is the file, would request some of you to please check if f6 render works. Also the file size is much smaller now On Mon, 18 Aug 2025 at 15:25, Rogier Wolff <R.E.Wolff@bitwizard.nl> wrote: > On Mon, Aug 18, 2025 at 07:49:56AM +0530, Sanjeev Prabhakar via Discuss > wrote: > > Thanks Michael > > That means it does render after a long time but practically unusable > > I tested the model on my work-computer while I was at home. I gave up > watching the screen not-change, but when I arrived at work maybe 24h > later it was rendered! > > Anyway, the output in the openscad window is: > > Parsing design (AST generation)... > Compiling design (CSG Tree generation)... > Rendering Polygon Mesh using Manifold... > ERROR: [manifold] Input mesh is not closed! > ERROR: [manifold] Surface_mesh -> Manifold conversion failed: NotManifold > ERROR: [manifold] Input mesh is not closed! > ERROR: [manifold] Surface_mesh -> Manifold conversion failed: NotManifold > Geometries in cache: 69 > Geometry cache size in bytes: 9927040 > CGAL Polyhedrons in cache: 0 > CGAL cache size in bytes: 0 > Total rendering time: 0:00:02.674 > Top level object is a 3D object: > Facets: 68578 > Rendering finished. > > So... 3 things: > > * Manifold thinks it is not manifold. > * the render time is not recorded accurately. I didn't give > up /that/ fast. > > I have just re-run my test and this time it previewed taking 10:45 > (645 seconds) to preview and then render (F6) in... lets take > openscad's word for it, under 3 seconds. Openscad recorded 1 second > and 24 milliseconds of "render time" for the preview. That is about > 99.7% wrong. > > Manifold warns, cgal just fails and returns "no geometry". > > So "completely no results" is consistent with CGAL F6 render. > > Would exporting the manifold output result in a broken STL that might > be fixable? Or maybe help in finding where the original fails to be > manifold? > > IMHO, CGAL was the cause of some meshes ending up non-manifold. > Switching to Manifold has helped a lot. > > Roger. > > > On Sun, 17 Aug, 2025, 11:39 pm Michael Möller, < > private2michael@gmail.com> > > wrote: > > > > > Parsing design (AST generation)... > > > > > > Compiling design (CSG Tree generation)... > > > > > > Rendering Polygon Mesh using CGAL... > > > > > > ERROR: The given mesh is not closed! Unable to convert to > > > CGAL_Nef_Polyhedron. > > > > > > ERROR: The given mesh is not closed! Unable to convert to > > > CGAL_Nef_Polyhedron. > > > > > > Geometries in cache: 47 > > > > > > Geometry cache size in bytes: 9948176 > > > > > > CGAL Polyhedrons in cache: 1 > > > > > > CGAL cache size in bytes: 88456696 > > > > > > Total rendering time: 0:41:44.608 > > > > > > Top level object is a 3D object: > > > > > > Simple: yes > > > > > > Vertices: 61629 > > > > > > Halfedges: 198678 > > > > > > Edges: 99339 > > > > > > Halffacets: 75424 > > > > > > Facets: 37712 > > > > > > Volumes: 2 > > > > > > Rendering finished. > > > > > > ==== > > > > > > The memory reported by Windows TaskManager says 1.1Gb > > > > > > An empty OpenSCAD 40Mb, after reading the file 130Mb. > > > > > > I did another render, and get new logs: > > > > > > : > > > > > > Rendering Polygon Mesh using CGAL... > > > > > > PolySet has nonplanar faces. Attempting alternate construction > > > > > > PolySet has nonplanar faces. Attempting alternate construction > > > > > > : > > > > > > Previous run I did a preview first (the run time seems to be following > the > > > same "speed" .. but cant wait for it to finish) > > > > > > > > > > > > On Sun, 17 Aug 2025 at 18:43, Michael Möller < > private2michael@gmail.com> > > > wrote: > > > > > >> Last proper release version 2021.01 on Windows 10. > > >> Preview fine. > > >> Render started and after ~3 minute I'm at 130/1000. I'll let it run > for a > > >> while. > > >> > > >> > > >> On Sun, 17 Aug 2025 at 16:18, Jeff Ross via Discuss < > > >> discuss@lists.openscad.org> wrote: > > >> > > >>> On 8/16/25 22:33, Sanjeev Prabhakar via Discuss wrote: > > >>> > > >>> Can some of you please download and check if this file f6 renders. > This > > >>> is a bit heavy 4mb file: > > >>> > > >>> > https://github.com/sprabhakar2006/openSCAD/blob/main/render_test.scad > > >>> > > >>> f6 render for this file is not working for me. > > >>> > > >>> I running openSCAD 2025.08.09 (git 895cd8f96) version on macbook air > M1 > > >>> > > >>> _______________________________________________ > > >>> OpenSCAD mailing list > > >>> To unsubscribe send an email to discuss-leave@lists.openscad.org > > >>> > > >>> It does not render here. > > >>> OpenSCAD <https://www.openscad.org/> version 2025.07.15.snap, > > >>> RockyLinux 9.6, 2011 MacBook Pro w/16G RAM > > >>> > > >>> The preview comes up almost immediately. Render hangs at 19/1000. One > > >>> CPU is pegged at 100%. > > >>> > > >>> Jeff > > >>> > > >>> _______________________________________________ > > >>> OpenSCAD mailing list > > >>> To unsubscribe send an email to discuss-leave@lists.openscad.org > > >> > > >> > > > _______________________________________________ > > OpenSCAD mailing list > > To unsubscribe send an email to discuss-leave@lists.openscad.org > > > -- > ** R.E.Wolff@BitWizard.nl ** https://www.BitWizard.nl/ ** +31-15-2049110 > ** > ** Verl. Spiegelmakerstraat 37 2645 LZ Delfgauw, The Netherlands. > ** KVK: 27239233 ** > f equals m times a. When your f is steady, and your m is going down > your a** is going up. -- Chris Hadfield about flying up the space shuttle. > ** 'a' for accelleration. >