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Old 11th March 2007, 03:14 PM   #1
Grale
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Default Cutting out shapes

Ok i've worked out that if i use boolean subtract, i can cut out the shapes i want, but i have a problem that it sometimes leaves a mess after cutting, it seems if i adjust the position of the shape i am going to cut out, it sometimes makes a clean cut !

Here's a couple of pic's of the problem:

before:



After Messy:



Any ideas what i can do??

Thanks
------------------------------------------------------
Firstly hi to all here

I have just started out learning to use ac3d, i am trying to model an airplane i have as a first project, it's a simple design as it has a flat profile fusealage, the only thing not flat are the wings!

Ok so i have searched, found a few answers to my question, but i am still stuggling to do what i want, which is cut out different shapes from my fusealage, here's a picture:


ok so i want to cut out the squarish looking box and leave a hole the same shape where the box used to be, there are many more shapes like this one from round,oval ect...


Any help would be much appreciated

Grale

Last edited by Grale; 12th March 2007 at 02:52 PM.
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Old 14th March 2007, 01:29 PM   #2
luuckyy
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Default Re: Cutting out shapes

From what I know, you should have a divided surface where you want to use the boolean tool to cut out a shape.
And this could be the reason why your second cut looks a bit messy.

HTH.
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Old 16th March 2007, 12:25 PM   #3
captainj2410
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Default Re: Cutting out shapes

I've had similar problems with boolean. From what I've been told there's no real way to fix it. I'd just take all the messy surfaces, delete them, and fill in the holes manually.
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Old 16th March 2007, 01:09 PM   #4
Andy
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Default Re: Cutting out shapes

Interesting picture - suggest you select a few surfaces and combine them.

For booleans - to prevent the triangulation happening, try not to make holes in single polygons e.g. if you cut a cylinder through a box, you'll get triangles. If you cut it out of a block (arranged so that the cylinder doesn't intersect with just one surface) - you'll get a cleaner result.
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