Andrei,
"""""""""OSTexo, Also if you are so pedant, you better look on his model""""""""""
Everything about mould design is Pedant.
"""""Green Cylinder is perefect one, and it stay behinde his cylinder. As you can see his cylinder is wrong""""""""""
You are assuming that it is supposed to be a cylinder? "Wrong" is determined by the application of the design.
""""""""""To avoid that artifacts that his model has, cylinder must be perfect...
This model have 2 mistakes it has artifacts and it is not perfect cylinder. Also it had messy geometry. """""""""""
"artifacts" and "Messy design" are questionable. You can teach yourself this by creating a simple 360 revolve in MoI, and exporting it out as a SAT file, then bringing it back in and inspecting the result. (In a simplistic way)
Messy design? You are referring to the surface edges in the part? These can be of no concern with the surface in a manufacturing application. You may be concerned if you are "rendering" it, or making a poly model out of it for Games. But then, you wouldn't be making parting lines and splits of the original surfaces, for Mould work.
The "artifacts" you see, could be part of a larger structure, with "perfect surface continuity" meeting there. The "export" and "dicing up of the model" may bring this type of surface display into play, but, You cant start just "rebuilding curves and surfaces" at leisure. It will destroy the original intent, surface continuities with regard to the rest of the parts of the mould, which is a "precise model" from the start. It can be a "do not touch" area. The original engineer of the model, would have to address the entire design.
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