Blender - smooth or solid

Discussion in 'Software and Applications' started by synthercat, Oct 2, 2010.

  1. synthercat
    synthercat New Member
    Hi there! That's my first post here and I am all excited to find out about shapeways.

    Question : You know that in blender we can have an object that could me smooth or solid (or parts of it smooth and other parts solid)

    What's the deal with that? Is it just me or does STL export -> shapeways server conversion reads is a solid... could I fix that with many many faces? for example make a ball with so many faces that even in solid it would still look smooth?
  2. stop4stuff
    stop4stuff Well-Known Member
    I don't use Blender, but I aim for about 10 vertices per mm (i.e.100 per mm^2 surface area) and find that models are as smooth as the printing processes will allow... Here's an example

    I think the way the printing processes work is pretty much point to point within the resolution of the printer... the smoothing you see on screen in a render is the software doing some jiggery-pokery to make it look better, whereas a 3d printer prints 'as-is'
  3. stannum
    stannum Well-Known Member
    Always work in solid mode, it shows the real polygons and what the printers will print. Smooth mode is a visual trick, and even so, you can notice problems in the silhouettes of objects.

    So yes, if it doesn't look smooth, add more polygons until the approximation looks smooth enough. Subsurf modifier is a way to get the polygons without having to control all them, just make sure the exporter applies it or apply by hand before exporting.