ok so i’ve investigated a bit further … in fact the previous model i sent i had saved on the Mac version which i rarely use (i use the PC for all things 3D and CNC but the Mac for Office and Graphics/linux stuff) that’s why the tolerances were wrong … the original file had already set the tolerance to the settings you suggested, and i faintly remember having googled this a few years back and from then on worked with and paid attention to the tolerance.
i think what i’m really having trouble understanding is how i can avoid these meshes which seem rather random to me, have a look at this screenshot:
on the bottom there is the polysurface and on top the mesh conversion … why does it mesh the tip (center part) and the sides (left and right) differently ? in my mind the ‘edge’ (front) should be meshed the same way (all quads) all around and i don’t get why it starts at some point meshing it with tri’s. This particular model was modeled with t-splines and then converted to a rhino object, but i’ve done it in several different ways, lofting, sweeping, patching, blend surfaces, connect surfaces, curve networks … but i never manage to get a predictable poly conversion, no matter how ‘clean’ i try to model the nurbs.
the background why this is bothering me is that i need/want to export a large quantity of my products for WebGL and these random mesh changes cause a lot of display problems if the mesh is not homogenous. Since the number of faces greatly impacts the filesize of a WebGL model i’d ideally need a pretty low resolution mesh. But even when i crank out the maximum number of faces from the poly conversion this doesn’t fly, in reflections and shadows there are always visible seams and i can’t have that since they do not exist in the final milled products. remodeling all my products as quad poly meshes just to use them for WebGL from scratch is really not an option so i’d love to understand where this is coming from and how i can avoid it in the future, or hopefully even ‘fix’ my current models to be able to get a clean poly export from them.
another quick question: how do you embed images in a post on this forum ?