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Flipped UVW faces
show user profile  Beng
Hi all.
I'm a noob so if this question is silly I apologize.

I've been working with some character modelling for the past few days and have come across a problem which is really annoying.

My problem is flipped UVW faces in the model (seen through the xWiew). They randomly appear (or so it would seem to me) for no good reason at all. If I bridge edges; if i use the symmetry modifier; if I use turbosmooth - there they are.. some times in great numbers. It pisses me off and I can't seem to find a way to fix it either.

I've checked around the web for some solutions or causes for this problem but there are few answers, and the ones I've come across have had mediocre results at best.

Things I've tried:
Select face > Flip - works but messes with the geometry in unspeakable ways.
Adding a Normal modifyer (Unify Normals = 1, Flip Normals = 0) - Doesn't work.
Convert to Editable Mesh > Element > Surface properties > Unify - Doesn't work.
Unwrap UVW > Open editor > select flipped face > break > restitch - doesn't work.
The list goes on

When I model I'm currently following a tutorial from and when I check the exercice files they too have loads of these issues.

Can someone please tell me what the WHAT is going on with this??
And maybe some tips as to how I should work to avoid this problem?
Any reply is appreciated.
Thank you in advance.
read 767 times
3/6/2016 7:48:38 PM (last edit: 3/6/2016 7:48:38 PM)
show user profile  herfst1
Try resetting xform.

But if you're bridging and modifying after unwrapping you're probably doing it wrong.
read 743 times
3/6/2016 10:30:22 PM (last edit: 3/6/2016 10:30:22 PM)
show user profile  Beng
Thank you for the reply.

The object that I'm working with now is just a low-poly head. I haven't started to ad any UVW modifiers to it yet. Just a mirror (instance) and a turbosmooth. without the turbosmooth 0 faces flipped - with turbosmooth 27 faces flipped. I don't get it.. The model i so simple.

Do i reset the faces using xform? how?

Also, I don't know if this is important but when i do a quick render there doesn't seem to be any problem.

Thanks in advance
read 740 times
3/6/2016 10:55:54 PM (last edit: 3/7/2016 12:01:10 AM)
show user profile  herfst1
If you go to the system tab in the right hand menu (you know, where you go to create, add modifers etc, it's the right-most one), click "reset xform" then click "reset selected." now right-click on your model and convert to editable poly.

Note: if you have things linked to the object you're reset-xforming strange things will happen. Best to save beforehand.
read 722 times
3/7/2016 12:28:24 AM (last edit: 3/7/2016 12:28:24 AM)
show user profile  FX
Assuming you have no use for your UVW's until your modelling is done, you can remove them with the tool in the Utility panel, click on more and select UVW Remove.

3ds Max mirror tool has been broken for years and results in flipped faces/normals depending on what version you use, it may or may not have been fixed.

read 711 times
3/7/2016 3:23:41 AM (last edit: 3/7/2016 3:24:15 AM)
show user profile  Beng
Thank you so much for the reply guys! I'm greatful.

The reset xform flipped the model 90 degrees around x. Probably due to the core object being a plane? No luck with the flipped faces tho..

With the UVW remove the xWiew now says "not applicable" which i suppose is a step in the right direction, but how do i remap the UVW?

Thanks in advance.
Again, thank you for your trouble :)
read 689 times
3/7/2016 7:31:06 PM (last edit: 3/7/2016 7:31:06 PM)
show user profile  FX
Don't worry about it, when you get round to learning UVW unwrapping all will become clear, any flipped UV's will be tamed once you apply new one's.

read 674 times
3/8/2016 2:16:43 AM (last edit: 3/8/2016 2:16:43 AM)
show user profile  Beng
Allright. Thanks for the help! :)
read 662 times
3/8/2016 6:55:08 PM (last edit: 3/8/2016 6:55:08 PM)
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