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View Full Version : BOOLEAN PROBLEM: Subtracting from .3ds object!

pongball
04-08-2005, 04:26 AM
:scream: Hey guys,

I have this .3ds model imported into 3dsmax6, which is fine and dandy. I want to subtract a box shape out of it --again, fine and dandy. I use the boolean command (used it for yrs, know how it basically functions, etc) and subtract the max box from the .3ds imported object, however now i can see right through the damned thing. Any simple fix for this? Thanks!
erilaz
04-08-2005, 06:48 AM
How do you mean "subtract a box shape"? Are you getting rid of a box on the mesh or cutting a cube into the mesh?
charleyc
04-08-2005, 06:49 AM
does it appear as a poor boolean, or is it displaying wierd?

Here are a few boolean tips I have learned. The first is to boolean with Editable Mesh and make all edges visible on both operands. 90% of the time this solves my boolean issues. Also, with imported mesh, make sure all the verts are welded and there are no co-planer faces....
pongball
04-09-2005, 05:29 PM
does it appear as a poor boolean, or is it displaying wierd?

Here are a few boolean tips I have learned. The first is to boolean with Editable Mesh and make all edges visible on both operands. 90% of the time this solves my boolean issues. Also, with imported mesh, make sure all the verts are welded and there are no co-planer faces....

Ok i am so lost now :( TWO QUESTIONS:
1. What do you mean by "make all edges visible on both operands-- how do i go about doing this (detailed explanation pls!).
2. Also, what are co-planer faces, and how do i go about removing them like you say?

Anyway, here's a simplified example of what im trying to do:

I import a .3ds object into max scene (it's a screw, but it doesnt have that trench @ the top)

I want to dig out that trench @ the top, so.... i use the boolean command and create a simple box and cut that box shape out of my original screw model.

When i apply the boolean command, i get the subtraction, but along with that, i can also see into and sometimes outside the other end of the screw model!
Hazdaz
04-09-2005, 07:43 PM
Do you have any screenshots? (from more than 1 angle)

Are you sure the normals aren't flipped and that is why you are seeing right through it??

Anyways, not knowing exactly what your model looks like, I would still think that you could do what you want by NOT using booleans
Conny
04-10-2005, 02:46 PM
Try increase the box segments. Booleans works better if both operands
are fairly equal in mesh density. Here is an article about max booleans:
http://hem.spray.se/conny.klasson/tutorials/max_boolean.htm

Conny
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