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"form new Sub-assembly here" command

"form new Sub-assembly here" command

"form new Sub-assembly here" command

(OP)
i have a question regarding the "form new Sub-assembly here" command.

i use it when im in assembly mode and decide that 3 or 4 parts (sometimes many more) that i have put in my assembly should be in a sub-assembly instead for the sake of drawing organization.

However, ive noticed that when i do this, a lot of my mates throw warnings and need to be deleted because they are in conflict with another mate.



Is there a way around this??  i just finished a model and its like, not even constrained at all anymore.  I built the whole thing mating the parts together and to the planes but as i added more and more parts and formed more sub-assys, its not mated anywhere anymore.  i can grab the main part and flop it all around with a bunch of the smaller parts hanging on for dear life........

anyone encounter this problem? and how to get around it!!

RE: "form new Sub-assembly here" command

Encountered that?  Definitely.  Found a way around it?  No.  But I've learned through trial-and-error to plan ahead, so my mates don't blow up.  If you mate at each sub-ass'y, you'll find an easier time in the long run (Good practice for memory-saving sake, too.)

RE: "form new Sub-assembly here" command

The mates "throw warnings" probably because the parts you are moving into the sub-assy have mate or geometry references still pointing outside of the sub-assy.
It is best to keep the parts within a sub-assy referencing only other parts within the same sub-assy, or to the sub-assys own reference planes/geometry.

It is usually better if the mates of a sub-assy to an upper level assy use only its own reference planes/geometry.

cheers
Helpful SW websites  FAQ559-520
How to get answers to your SW questions  FAQ559-1091

RE: "form new Sub-assembly here" command

Why does this happen? ...Because of what CBL stated.

What's the best way to avoid it? ...Once you insert a part, only create mates between it and the part it is actually mating to (i.e. touching). Don't mate to an face (or something) of another part that the new one doesn't touch. Don't mate to any reference geometry in some other, non-touching part either. And don't mate to any reference geometry created in the assembly you're working in. This will stop a majority, but not all, of these errors.

Ken

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