# Mesh disappears after Boolean
**URL:** https://forum.highend3d.com/t/mesh-disappears-after-boolean/50518
**Category:** Maya
**Tags:** modeling
**Created:** [July 16, 2002, 5:46pm UTC](https://forum.highend3d.com/t/mesh-disappears-after-boolean/50518 "2002-07-16T17:46:18Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@tolerate](https://forum.highend3d.com/u/tolerate)
#### Post date: [July 16, 2002, 5:46pm UTC](https://forum.highend3d.com/t/mesh-disappears-after-boolean/50518/1 "2002-07-16T17:46:18Z")
I've created a mesh using Maya's SubD's and converted it to Polys.
I need to use a boolean operation on it but when I do, the mesh disappears. Any ideas on how to stop this from happening?
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### Author:  [@sibben](https://forum.highend3d.com/u/sibben)
#### Post date: [July 17, 2002, 2:47am UTC](https://forum.highend3d.com/t/mesh-disappears-after-boolean/50518/2 "2002-07-17T02:47:49Z")
This is why I stay away from booleans. 
Make sure both meshes are clean and without folds (try doing cleanup on them). I believe it's also good if they are both solid models (no holes). But I'm no expert on booleans...
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### Author:  [@jtk77](https://forum.highend3d.com/u/jtk77)
#### Post date: [July 17, 2002, 2:59am UTC](https://forum.highend3d.com/t/mesh-disappears-after-boolean/50518/3 "2002-07-17T02:59:07Z")
I've had this issue with polys that are light when booleaned with objects that are heavy..
Its relyl freaken ANNOYING acualy.
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### Author:  [@sibben](https://forum.highend3d.com/u/sibben)
#### Post date: [July 17, 2002, 3:36am UTC](https://forum.highend3d.com/t/mesh-disappears-after-boolean/50518/4 "2002-07-17T03:36:41Z")
I know. I avoid them like the plague. Nothing beats the good old splitting method.
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### Author:  [@joojaa](https://forum.highend3d.com/u/joojaa)
#### Post date: [July 17, 2002, 10:46am UTC](https://forum.highend3d.com/t/mesh-disappears-after-boolean/50518/5 "2002-07-17T10:46:37Z")
The short list theres a huge one in the archives somewhere, search deep 1 year old id say...
- Check norrmals (they must be consistent, use conform, and their direction)
- Check for nonmanifold surfaces.
- Check for holes (confuses the algorithm)
[li]Check history (might confuse never noticed tough)
There was some other things too cant remember tough! Should fix 99% of cases.
forgot:
[/li][li]Use closed surfaces when apropriate, works better.
[/li][li]Make sure there isnt invisible, polygon gaps (merge vertices and edges first).[/li]