chrisb wrote: ↑
Tue Apr 16, 2019 5:46 am
It's a sad truth that stl became so prominent with the rising popularity of 3D printers. What a waste. I've seen, that even a 1.5 million $ printer uses it...
quick61 wrote: ↑
Tue Apr 16, 2019 4:56 am
Dude, a man after my own heart. An STL part does not a CAD model make. STL is a one way/dead end street. STL most definitely has it's place, but precision CAD ain't one of them. No matter how fine a mesh, it can never be equal.
fosselius wrote: ↑
Tue Apr 16, 2019 4:39 am
this image says it all:
that is a good picture, explains it well.
But guys I just wanted to point out that although all our comments are correct about most stl files we see here, please remember that
adilgamedev wrote: ↑
Tue Apr 16, 2019 1:08 am
Hi guys, I'm a 3D Artist who was given the task of converting an STL (3D Scanned) file to STEP file.
In this case the stl came from a 3d scanner. It's not a degraded file exported from a CAD format like we normally see.
The last time I remember someone asking this question, it turned out that they had a very complex shape in the mesh file, wasn't it a human skull or something like that? But either way you see what I mean, if its full of complex curves etc.
adilgamedev we really need to get some idea of what your shape is or looks like to be able to help much. If you can't share the file, perhaps you could share a random file that has a similar complexity. Does it have lots of curves in 3d like a human skull would be or are we talking about something much easier to model in FreeCAD? If you can share the file, some of us here will help you convert it, if you like? Or at least point you in the right direction.
By the way, I think those 3d scanners can mostly at least, be set to produce a "points cloud" rather than an STL file, in fact they likely produce the STL from a points cloud internally or at least fro ma set of points. FreeCAD can import points clouds in the points workbench. It is not likely that doing would help much in complex cases, but then again perhaps it could. It may be able to provide points from which you could create a b-spline or a b-spline surface. Doing so would be a lot of work if the model is complex.
I don't personally have any experience using Blender, but since it is a mesh modeller it may have tools to help reduce the sizes of the triangles? If it does perhaps you could get a good enough approximation of the curves. Where the triangluar curve approximations are on a planar surface, FreeCAD can remove some of the extra unneeded edges from those faces when the mesh is converted into a solid with a Part WB Refine.
Anyway, give us some idea, as much information as possible about what exactly the shape is like and we will see if we can help.
If the file is confidential then I suggest you put it on your laptop and come over to my place so I can see what you are dealing with, without it being pushed onto the Internet. Sorry, you will understand the joke when I tell you, as the others know, I live in the Australian outback. Chances of you living anywhere near me is extremely unlikely!