On 25 July 2018 at 05:07, Valerio Bellizzomi <vale...@selnet.org> wrote:

> Well then, PyCAM has rough and fine operations.

I am not 100% sure that that is the same thing. For example previous
finish operations with a different cutter might leave large lumps of
finished surface above the height of the current operation.
Conventional algorithms for an operation that works on _different_
surfaces would either retract to a safe height or crash through these.
(the former is obviously to be preferred). Proper rest-machining can
weave a path between these on point-to-point moves.

This is much easier to do when the CAM is integrated to the CAD. in
effect the previous operations become "Cut" operations in CAD and the
resulting remnant is a true representation of the remaining stock.
Unless the CAM system also becomes a 3D CAD system which can operate
on solid bodies as well as interpret them this is hard to do properly.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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