RE: "in car"
I'm imagining that it has something to do with relative coordinate systems, such as when you view a model from its place in the "cyber-universe" versus when you view it from a relevant feature of the model itself which contains the origin of reference.
Correct me if I'm wrong, WMS, but I usually just rotate, and move the model around until I've got it where I want it. If it is round, then I might want the primary datum (reference point or origin) at the arc center.
For most other work, I usually set one corner of my part's minimum "extents box" on the origin. This represents the size of the stock I start with. Any extra allowance on the stock is taken care of when setting up the machine, where a G92 home position is established before cutting begins.
What do you guys do?
__________________
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |