How can I fill the space inside an object as in the example?
https://www.dropbox.com/s/f3tluga4i173xtw/S.stl?dl=0
Can’t view it without installing an app. Post the image here
In what program were the numbers created? It looks like Doodle3D might have been the source. If you have access to the original software, please let us know the source. If you wish to modify this STL alone, tell us what software you would use, or consider to use.
I’ve been able to use Meshmixer to clear away the inside walls of the single feature numbers, then use Analysis/Inspector to repair/fill in the top and bottom faces. The other numbers, 4, 6, 8, 9, 0 haven’t worked in the same manner, due to my lack of familiarity with some of the nuances of Meshmixer.
@Roni_Segoly is this what you are wanting to do? Used a program called trueSpace (similar to Blender) to import your STL, remove all the triangulation, and fill all the holes with faces. Deleted inside faces and then converted the very inside ones back to holes. Took about 10 min. I can send you the STL of the collection if you would like.
missing/deleted image from Google+
Will return to it shortly. Basically I took free hand sketch, converted to STL by doodle 3d, poor reults. And converted to svg using online convert tool and to STL using tinkercad, very good results, but still need some work
@Roni_Segoly If you are willing to start from your sketch, another method is to use Inkscape with the extension Path to OpenSCAD, but that requires to use two programs with which you may have no experience.
From what I understand, you can use the fill tool in Doodle3D to accomplish your goal. There’s at least one tutorial video covering that aspect.
It was easier to fill the shapes when it was still 2d using any paint SW
BTW I found this one https://makeprintable.com