Doing experiments with both copy/geometry, and merge/cutout some time
ago (WF2), I decided that copy geom. was the only way to go. Besides
the accuracy issues that are non-existent using copy geom., I ran into
problems updating dies using merge and cutout because the molded parts
used for the merge/cutout had to be in session for the cavity to update.
Otherwise, when doing a regen, or even rolling the die model back and
forward again produces no changes to the cavity.
Some more obscure config.pro options need to be set for the copy-geom
method to work as expected (automatic update, bring all referenced
models in session as needed, recursively regen parents of current model
as needed, etc...) but it is worth it.
As an example, if I have a model approx 2x2x4" that I want to put into a
die that is 8x8x8, using merge / cutout the proper accuracy may not be
possible (either because the die relative accuracy had to be less that
1e-6, ) or using absolute accuracy would cause the die model to fail.
Secondly, when trying to create an EDM electrode from the die model, the
accuracy is changed again (and for the worse)
Using the copy-geom method, If I open the EDM electrode model and hit
regen, all of the changes are updated. Using the copy geom. method, I
would have to make sure that all of the relevant models are 'in-session'
first. (Not a problem if you have PDM, but a royal pain otherwise)
Christopher Gosnell
TRIGON INC.
FPD Company
124 Hidden Valley Road
McMurray, PA 15317
PH: 724.941.5540
FX: 724.941.8322
www.fpdinc.com