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How to select the intersection line between 2 subtools so that Ｉcan extrude this edge

ZBrush Usage Questions
#1

Dear all Zbrush tutors,
I am currently making figures for 3D printing. For easy 3D printing I will separate the body parts into pieces, then I will assemble them togehter. For easy assembly, I will do Boolean Subtract to obtain the plug-in space between 2 subtools. I encount a problem of obtain the intersection edge between 2 subtools. Once I can obtain this edge (as shown in GREEN in the picture attached), I can do MOVE-extrusion, but HOW???
Or, there is another easy way to obtain this “Plug-in space” ?
Many thanks for your advice. Thanks!

Attachments

ZbrushForum head insert.jpg

ZbrushForum head.jpg

#2

I have used the slowest way, to mask the edge manually. It is slow and not accurate, but I cannot think of another way to do it.

#3

Have a look at post#6http://www.zbrushcentral.com/showthread.php?191674-Setting-up-my-model-3D-printing-How-to-make-joints-in-Zbrush&p=1126966#post1126966 I think it’s what your after!

#4

Thanks a lot Springfield Jack.

First of all, your solution works, and thanks for your kindness for advising me.

But I just wonder if I can have a faster and more accurate rate to obtain the inter-jointing edge between 2 subtools.

Your solution is to use “SliceBrush” where the 3Dmodel is in one single piece. Your method works (as shown in the picture) but I still have to draw the edge out manually. Do you know if there is a method to obtain the touching edge between 2 subtools, in this case there are 2 pieces? As shown in my previous human head figure.

Thanks.

Thanks : ) ZbrushForum soln.jpg

#5

Doesn’t the Dynamesh subtraction give you the intersection you are after?

#6

Yes, dynamesh subtract give me the needed “male and female” shapes.
Seems there is no way to save the manual effort of using the “SliceBrush” to select the edges.
Thanks.