Assemble vs Add

[rossly]

I looked for an answer in old topics but didn't find an answer.

Is there a differance between assemble and add in part design? I was told to use assemble when at all possible and use negative bodies also. I have been asked but others here why and I didn't have a good answer other than "because".

Ross.

 

[catiajim]

Part Bodies in V5 have polarity. You can create a new Part Body that starts with a Pocket rather than a Pad. This gives it negative polarity. If you use Assemble, the operation will follow polarity. If you use Add or Subtract, the operation ignores the polarity of the body.

This is extremely powerful in advanced functionality, including PowerCopies, User Defined Features, etc.

 

[Albigger]

Would this only make a difference if you were using a negative body in the operation?

Most of the time I am just adding two physical (positive?) part bodies together.

I think I understand, but could you give me an example?

Sorry to jump in on your question Ross, but I was wondering the same thing just the other day.

--Jay

 

[jackk]

I did a search on "assemble" and found this oldie:

http://www.eng-tips.com/viewthread.cfm?qid=152895

 

[jackk]

here's another old post from the COE site. this one includes a little demo that shows the difference.

http://www.coe.org/Collaboration/Di...ew/topic/forumid/6/postid/106588/Default.aspx

 

[rossly]

Thanks, love to get everyone's input. Now it is time for me to look like a genius. ;D.

 

[belvedere64]

Another favorite:

http://www.eng-tips.com/viewthread.cfm?qid=135059

/k.c.takacs