Hi, I'm simply requesting help to solve my OpenSCAD problem, and hopefully I will learn the origins of it too. I have an STL that I generated from importing a raw bitmap modified by a ruby script (online sourced.) I then used meshmixer to cut off a portion of the STL (an extremely thin flat sliver.) I had tried to do this with the difference of a rectangle in openscad, but I had some trouble rendering. The problem is almost certainly to do with this original STL I made, not the file I'm attaching it to. It's a sports-theme thing, two logos, for my little cousin I want to attach it to an iphone case file (birthday gift I plan to have printed on a resin printer with a relatively flexible resin) and I think I did that operation correctly. Preview looks great. But, when rendering I get the error below, and a result of just my case without the attached logo STL. I've googled the error code and found similar issues, and most people's recommendations amounted to running the STL through cloud.netfabb.com. I'm not sure if there's any way I can recover this STL or fix it, because I have already run it through cloud.netfabb.com at various stages of the process. I'm trying to figure out how to attach the relevant files to replicate the problem. I suppose dropbox might be easiest. https://dl.dropboxusercontent.com/u/3619097/OSCAD.zip -- View this message in context: http://forum.openscad.org/Specific-rendering-issue-not-solved-by-cloud-netfabb-tp18150.html Sent from the OpenSCAD mailing list archive at Nabble.com.

I'm not an expert at either OpenSCAD nor Meshmixer, but I like to see what I can learn from others' work and/or problems. I've downloaded your STL files, but did not tamper with nor open the .scad file. Meshmixer Inspector shows the "floating" pieces of the sliced logo to be a problem. Using the auto-fix in Meshmixer removes them, so I canceled that action and took a different approach. Flipping the logo slice over so the bevels were facing up and then importing the case, joining them and slicing off the smallest bit remaining to attach the logo resulted in an STL that does not fail the Meshmixer Inspector. Zip File of results <https://www.dropbox.com/s/9tj0rvobtpfb8zw/CaseSliceWithLogo.zip?dl=0> I've included the Meshmixer file in the zip as well as the STL, so you can take it apart if you like. -- View this message in context: http://forum.openscad.org/Specific-rendering-issue-not-solved-by-cloud-netfabb-tp18150p18151.html Sent from the OpenSCAD mailing list archive at Nabble.com.

Hi, I tried something different. The latest version (11) of Mathematica include 3D printing functions, so I tried them with your stl. The "FindMeshDefects" discovered singular vertices, overlaping faces, and very small polygons. As mentioned by fred_dot_u, the small components must be kept. I ran "RepairMesh" on only single vertices and overlapping faces, and it worked great. It load in openscad and renders properly. This very new feature of Mathematica might prove useful in the future, if you happen to use Mathematica. Here is the repaired model: https://www.iro.umontreal.ca/~roys/837645729742/repaired.stl Sincerely, Sebastien Le 2016-08-17 à 11:22, fred_dot_u a écrit : > I'm not an expert at either OpenSCAD nor Meshmixer, but I like to see what I > can learn from others' work and/or problems. I've downloaded your STL files, > but did not tamper with nor open the .scad file. > > Meshmixer Inspector shows the "floating" pieces of the sliced logo to be a > problem. Using the auto-fix in Meshmixer removes them, so I canceled that > action and took a different approach. > > Flipping the logo slice over so the bevels were facing up and then importing > the case, joining them and slicing off the smallest bit remaining to attach > the logo resulted in an STL that does not fail the Meshmixer Inspector. > > Zip File of results > <https://www.dropbox.com/s/9tj0rvobtpfb8zw/CaseSliceWithLogo.zip?dl=0> > > I've included the Meshmixer file in the zip as well as the STL, so you can > take it apart if you like. > > > > -- > View this message in context: http://forum.openscad.org/Specific-rendering-issue-not-solved-by-cloud-netfabb-tp18150p18151.html > Sent from the OpenSCAD mailing list archive at Nabble.com. > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

Thanks All! [Especially Sebastian and Fred] Immediate short term --> bringing joy to 10 yr old cousin. Long term --> Exciting to get more capable with openSCAD to understand the principles of what was going wrong. I'll definitively investigate the meshmixer process fred followed and see about whether I can get my old mathematica install updated. Many thanks! -Tomek ᐧ On Wed, Aug 17, 2016 at 12:56 PM, DIRO <roys@iro.umontreal.ca> wrote: > Hi, > > I tried something different. The latest version (11) of Mathematica > include 3D printing functions, so I tried them with your stl. > > The "FindMeshDefects" discovered singular vertices, overlaping faces, and > very small polygons. As mentioned by fred_dot_u, the small components must > be kept. > > I ran "RepairMesh" on only single vertices and overlapping faces, and it > worked great. It load in openscad and renders properly. > > This very new feature of Mathematica might prove useful in the future, if > you happen to use Mathematica. > > Here is the repaired model: > > https://www.iro.umontreal.ca/~roys/837645729742/repaired.stl > > > Sincerely, > > Sebastien > > > > Le 2016-08-17 à 11:22, fred_dot_u a écrit : > > I'm not an expert at either OpenSCAD nor Meshmixer, but I like to see what I > can learn from others' work and/or problems. I've downloaded your STL files, > but did not tamper with nor open the .scad file. > > Meshmixer Inspector shows the "floating" pieces of the sliced logo to be a > problem. Using the auto-fix in Meshmixer removes them, so I canceled that > action and took a different approach. > > Flipping the logo slice over so the bevels were facing up and then importing > the case, joining them and slicing off the smallest bit remaining to attach > the logo resulted in an STL that does not fail the Meshmixer Inspector. > > Zip File of results<https://www.dropbox.com/s/9tj0rvobtpfb8zw/CaseSliceWithLogo.zip?dl=0> <https://www.dropbox.com/s/9tj0rvobtpfb8zw/CaseSliceWithLogo.zip?dl=0> > > I've included the Meshmixer file in the zip as well as the STL, so you can > take it apart if you like. > > > > -- > View this message in context: http://forum.openscad.org/Specific-rendering-issue-not-solved-by-cloud-netfabb-tp18150p18151.html > Sent from the OpenSCAD mailing list archive at Nabble.com. > > _______________________________________________ > OpenSCAD mailing listDiscuss@lists.openscad.orghttp://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org > > > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org > > -- Tomek Brzezinski Mechanical Engineer B.Sc, Duke University, December 2014 60 edgemere rd Interests: , Electromechanics, Embedded systems, Data Acquisition, Fabrication Tech, EV Tech Lynnfield, MA,01940 Skills: Cadwork, AVR custom design, 3D Printing, C++, Custom PCB fab.