Author Topic: Boolean Cut  (Read 5014 times)

Offline candle_86

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Boolean Cut
« on: October 04, 2009, 07:55:05 PM »
Ok now im getting confused here, here is the picture. I got the bridge and tubro shaft connected doing clones of both, then subtract B-A then Subtract A-B then Attach then weld then delete the inside polygons, but when I try this here, it doesnt work at all it flattens part of the saucer ect, but doesnt actully cut anything out of either shape and I cant figure this out. To give an idea im happy with the look of tiber so its getting redone

Offline Daystar70

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Re: Boolean Cut
« Reply #1 on: October 04, 2009, 08:32:19 PM »
From What i've encountered dabbling in any Boolians, your mistake was deleting the Polygons from the tube. you need to "Edit"the existent ones, you can convert it to editable Polygons, and after "smoothing" choose to make it a mesh welded, also "before"you boolian it try and ,make sure you "cap holes" your using 4 views or 3, but you may miss something if looking at it at certain angles..this is going strictly by old memory i recall a similar problem once. i could be wrong.

Offline candle_86

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Re: Boolean Cut
« Reply #2 on: October 04, 2009, 08:36:11 PM »
all holes are capped, that i ensure, i finally got it, took me a minute but thats welded along with the neck that gave me total hell lol

Offline Daystar70

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Re: Boolean Cut
« Reply #3 on: October 04, 2009, 08:38:45 PM »
Ahh okay cool :) i may download Gmax again and dabble with it i also like Zbrush to.

Offline Adonis

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Re: Boolean Cut
« Reply #4 on: October 06, 2009, 05:47:02 AM »
Object A must be a seamless, error-free object.
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Offline Maxloef

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Re: Boolean Cut
« Reply #5 on: October 06, 2009, 11:59:44 AM »
also it needs to be UNION not substract :P

Offline MarkyD

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Re: Boolean Cut
« Reply #6 on: October 07, 2009, 09:48:09 AM »
Yeah as they last 2 posts have said.. and also try not to even do it if you can..  there the skill lies  ;)

Offline Phaser

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Re: Boolean Cut
« Reply #7 on: October 10, 2009, 09:12:37 PM »
I don't know, markyd.  I think it takes a lot of skill to get a boolean cut right!

Offline Furyofaseraph

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Re: Boolean Cut
« Reply #8 on: October 14, 2009, 12:05:55 AM »
I don't know, markyd.  I think it takes a lot of skill to get a boolean cut right!

Amen to that!



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Offline baz1701

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Re: Boolean Cut
« Reply #9 on: October 14, 2009, 03:59:20 AM »
When I cut the deflector on the jjexcel mk2 it gave me no end of errors.

The mesh was error free prior to cutting though is was not very heavy on the polys

I used a standard cylinder as my object B with around 20 sides (it was even worse when I crank it upto 30 sides).

the cut is fine but the extra polys around the hole screw up the surrounding mesh.

A mix of poly collapsing and cuts easy the errors but I lose the perfect circle and there are still errors there.

I'd love to know how to do this better.
Whatever knocks us back, can only make us stronger.

Offline candle_86

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Re: Boolean Cut
« Reply #10 on: October 15, 2009, 03:28:39 AM »
When I cut the deflector on the jjexcel mk2 it gave me no end of errors.

The mesh was error free prior to cutting though is was not very heavy on the polys

I used a standard cylinder as my object B with around 20 sides (it was even worse when I crank it upto 30 sides).

the cut is fine but the extra polys around the hole screw up the surrounding mesh.

A mix of poly collapsing and cuts easy the errors but I lose the perfect circle and there are still errors there.

I'd love to know how to do this better.

I cant agree more when I cut out my lower lip for the shuttlebay on the V2 tiber im working on I ended up with a boatload of poly's i didnt want and I cut the thing with an amazing 10 sided cylinder stretched and it only contacted 5 of the sides lol but instead of the normal vertex amount id expect i got alot of extras, I tried collaapsing the polies with the size tool adjustment to make them a straight line and ended up with weird shading errors

Offline limey BSc.

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Re: Boolean Cut
« Reply #11 on: October 15, 2009, 04:24:14 AM »
I cant agree more when I cut out my lower lip for the shuttlebay on the V2 tiber im working on I ended up with a boatload of poly's i didnt want and I cut the thing with an amazing 10 sided cylinder stretched and it only contacted 5 of the sides lol but instead of the normal vertex amount id expect i got alot of extras, I tried collaapsing the polies with the size tool adjustment to make them a straight line and ended up with weird shading errors

When you've done the cut, select all the excess verts (while in Editable Poly) and just click remove.
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Offline candle_86

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Re: Boolean Cut
« Reply #12 on: October 15, 2009, 11:56:07 AM »
I cant agree more when I cut out my lower lip for the shuttlebay on the V2 tiber im working on I ended up with a boatload of poly's i didnt want and I cut the thing with an amazing 10 sided cylinder stretched and it only contacted 5 of the sides lol but instead of the normal vertex amount id expect i got alot of extras, I tried collaapsing the polies with the size tool adjustment to make them a straight line and ended up with weird shading errors

When you've done the cut, select all the excess verts (while in Editable Poly) and just click remove.

ty thats gonna save me some headaches, cause i hate create poly which is how I fixed it last time, but I hate doing it that way.

Offline baz1701

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Re: Boolean Cut
« Reply #13 on: October 15, 2009, 05:56:05 PM »
ok here is a test I did to try and "remove" the unwanted verts. I just ended up with a square hole!
Whatever knocks us back, can only make us stronger.

Offline Furyofaseraph

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Re: Boolean Cut
« Reply #14 on: October 15, 2009, 07:13:10 PM »
I would not boolean for a deflector cutout (Actually, I wouldn't use boolean for ANYTHING, but thats just me). Here's a technique I've had better luck with.




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Offline Raven Night

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Re: Boolean Cut
« Reply #15 on: October 15, 2009, 07:27:23 PM »
That is absolutely brilliant Fury. Ive been either using Boolean (hit or miss oftentimes) or just doing it manual, which is also a pain. This should work much better.

Offline limey BSc.

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Re: Boolean Cut
« Reply #16 on: October 15, 2009, 07:51:36 PM »
I would not boolean for a deflector cutout (Actually, I wouldn't use boolean for ANYTHING, but thats just me). Here's a technique I've had better luck with.

Holy crap, you can snap to vertex?! :eek That makes things easier!
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Offline candle_86

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Re: Boolean Cut
« Reply #17 on: October 15, 2009, 08:06:59 PM »
dude you just made my life easier ty if this works with everything i dont have to make boolean cuts anymore

Offline Furyofaseraph

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Re: Boolean Cut
« Reply #18 on: October 15, 2009, 08:24:01 PM »
*headdesks*

Glad you guys find that helpful....

I REALLY need to make a video tutorial or five.



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Offline MarkyD

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Re: Boolean Cut
« Reply #19 on: October 16, 2009, 12:18:50 PM »
Lol, nice tut mate.. funny that guys did not know that..  defianetly need to go into tuts section, but you may need a new post  :)