Export STL to STP

[Gharryh1957]

I have downloaded and installed the latest FreeCad version.

Then opend the

Motormount.stl

(337.13 KiB) Downloaded 22 times

and using thre file-->export function (ctrl+E) I want to create a stp file
but then I get this error:
16:25:24 <Import> ImportOCAF2.cpp(1159): Unnamed#Motormount has null shape
but the part information shows lots points and edges.
So is this a bug or is my stl wrong??

Harry

[kisolre]

Your understanding of how all this works is wrong
Why do you need that STP file? FreeCAD (or almost any other tool out there) can not recreate a proper geometric shape without a lot of guidance. Like for example is the outer surface a cone or a multyside pyramid?
The shape is not so complex to recreate from scratch using that STL mesh as reference.
You use Part/CreateShapeFromMesh and then use that shape as reference to create a proper PartDesighBody.

[Shalmeneser]

[adrianinsaval]

I have downloaded and installed the latest FreeCad version.

Please read the instructions in the big red banner above, we have no idea what you consider "latest" and even if we did just knowing the freecad version number is usually not enough, if you want help you need to provide your full freecad info

Then opend theMotormount.stl
and using thre file-->export function (ctrl+E) I want to create a stp file
but then I get this error:
16:25:24 <Import> ImportOCAF2.cpp(1159): Unnamed#Motormount has null shape
but the part information shows lots points and edges.

STL are meshes, what do you expect to gain by exporting to stp? If you insist on doing it you need to first turn your mesh into a valid shape using the make shape from mesh tool in Part workbench