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FSX Problem with multiple booleans

Timmo

Timmo

Messages
558
Country
newzealand
Hi there- Im creating a hanger in Gmax and in the high LOD version I want to add some more detail by cutting out bits of the front and back wall. By 'cutting' I mean a result similar to the 'push-pull' tool in Sketchup where there is detail added to a continuous mesh.

The first boolean works fine and I get the detail I want (see bool1 image) with the areas that were in 'operand B' intersecting to create detail in my hanger (operand A)

However, when I go to do the second boolean the result is not as I expected- Instead of detail being added where operand B is (which just intersects slightly see Bool2 image), the whole face that I wanted to 'cut' looks as if it's removed instead? (see Bool result image)

What's going on?
 

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  • Boolean2.jpg
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  • BoolResult.jpg
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I've had the same issue in the past. I'm just posting so that when the answer comes up I'll have it too.
 
I dont know if this helps, but I have noticed I cannot use Boolean twice without 'odd' results... unless i re-convert the original (one I'm keeping) object back into an editable mesh, THEN apply the second boolean operation...

Just a thought... I have NO idea if this will solve your issue...

Good Luck
 
EdGeneer said:
I dont know if this helps, but I have noticed I cannot use Boolean twice without 'odd' results... unless i re-convert the original (one I'm keeping) object back into an editable mesh, THEN apply the second boolean operation...

Just a thought... I have NO idea if this will solve your issue...

Good Luck
Click to expand...

Hi Ed
Yep I've already tried converting it back to an editable mesh but that hasn't seemed to help.
 
Instead of a boolean, try using a Shape Merge!

Create a rectangular spline object, then select the hanger object, and Shape Merge the spline.

You should be able to convert to e-poly, select the new polygon and extrude/intrude as you wish.
 
Or use Edge/Cut and use the box as a template...Alternately you can try Edge/Chamfer and extrude inwards...
 
It is a bug

After using the boolean function I switch short to another tool like "standard primitives". The I select the boolean function again. With this intermediate change it works like expected. Nevertheless, this way out sucks. The bug is in since generations of 3DMax.

Regards
Mike
 
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