topic enlarge stl file in Meshmixer Forum

enlarge stl file

wm_pm — Wed, 05 Dec 2018 13:12:17 GMT

Hi, Is there a way to make a stl file, for example, 1mm larger mit meshmixer

do not scale, but enlarge metric, for example 1mm

Re: enlarge stl file

Anonymous — Wed, 05 Dec 2018 15:13:11 GMT

Not sure about what you mean by the difference between scaling and enlarging...

If you want to change the global size (all dimensions scaled the same way) use ANALYSIS/UnitsDimensions. Here you can set a metric value.

You can do the same on a object by EDIT/Transform while keeping other objects in the scene untouched. Here you can do a proportional scaling and non-poportional scaling (check UniformScaling in the tool's properties). There you can also set numerical values (clicking on the displayed numbers) ScaleX, ScaleY, ScaleZ is a factor the current size is multiplied. SixeX, SizeY, SizeZ ist the target length of the bounding box (World- or LocalBB depends on the setting in the widget).

Or do you mean extrusion to add a length while the rest of the object is not deformed? In this case (e.g to make a pedestal of a sculpture higher) you can use SELECT: Select the region to extrude and run SELECT/Deform/Transform) Here you can't put in a numeric value. But the Transform widget has a snapping function you can en/disable by clicking on the little S circle. You can set the snapping increments using the Up and Down keys on your keyboard while click and hold a transformation arrow. The A circle toggles absolute and relative distances.

Re: enlarge stl file

wm_pm — Thu, 06 Dec 2018 09:33:52 GMT

I would like to enlarge a stl file evenly with a certain mm indication. for example 1mm.
when I scale, it is unevenly magnified. only if I have a sphere or a rectangle or something similar would it work with scaling. i have stl dates that are complex, when i scale, i have reached the maximum I want the value i want, but in the contours it is less then. I just want it evenly piled up, which is for example 1mm more material everywhere.

Re: enlarge stl file

Anonymous — Thu, 06 Dec 2018 11:59:58 GMT

So you want to offset the surface?

There are three ways:

1. EDIT/MakeSolid in SolidType: Accurate allows to set a OffsetDistance (this is remeshing your object based on voxels. So the quality of the result depends on SolidAccuracy and MeshDensity). w

2. There's SELECT(SelectAll)/Edit/Extrusion with Direction set to Normal. This simply pushes the triangles a certain offset distance along their face-normals. If there are concave regions on your source, this will result in self-intersection (e.g. at the neck of the bunny):

3. There's SELECT(SelectAll)/Edit/Offset which pushes the surface a certain offset distance along their face-normals and remeshes after that to get rid of self-intersections.

If it comes to preserving hard edges all three attempts are limited.

Re: enlarge stl file

wm_pm — Thu, 13 Dec 2018 10:13:46 GMT

Thank you very much 🙂