Does Face Orientation Matter

There are none so blind as those that will not see.
I’m outa here too.

I’m sorry you feel I insulted you, on both occasions it was me throwing my hands up and giving up after attempting to have a sensible discourse which failed.

Painting Groups isn’t a good method of working with models, do you group every face that you want as a different material?
Using inference on something like this is slower than double clicking and doesn’t work around a sphere for example.

Your arguments for ignoring face orientation do not stand up to scrutiny and you continue to cherry pick points to answer.

If you stepped back and actually looked at the information you have been given in this thread you might see the overall picture a little better.

I’ll happily add you to my ignore list if you wish which means I’ll never read anything you say and thus never need to respond to it.

I apologise again if you feel put out, I continue to modify my replies when these things are pointed out to me. Perhaps one day I will be fully compliant and totally PC. Something tells me that will only happen when I stop posting completely.

Are you going to continue to edit to add more of my perceived indiscretions.

Please follow your own point and address the thread rather than the individual.

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@adameee, SketchUp isn’t just about not rendering and not 3D printing. In general these are not the only ones that determine the correct use of face orientation. After reading all issues pointed out here that you can encounter if you neglect correct face orientation, the choice is still yours. There are even some pointers to make ‘Reverse Faces’ easier.

I hope this post isn’t upsetting you, I hope I’m not insulting you or anyone else in any way.

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In recognition of those who have taken the time to post in this thread, it is vitally important to be tolerant of opinions that may fail to align with your own. it seems that a number of participants are noticeably thin-skinned and may have construed a comment as an insult where none was intended.

I suggest a wiser course would be to attempt to glean any cogent factual material from these conversations and not to presume bellicose perceptions. Most participants simply want to promote a mutually beneficial exchange of information and don’t come here to argue.

As an army draftee, during the era of the Viet Nam conflict, I and all of my fellow “grunts” were repeatedly subjected to the vilest, most offensive, and abusive verbal and sometimes physical insults imaginable at the hands of our own drill instructors and later by opposing forces. Yet many veterans endured the experience, largely because the ability to ignore the negativity was attained. Admittedly, this analogy is extreme but is offered to illustrate that it may sometimes be productive to ignore perceived slights, considering that little can be effected to change results.

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Amen! It is unfortunately impossible to convey facial expression and intonation in a typed post and very easy to write something that another may take differently than you intended. So writers need to be careful. And readers also need to recognize this defect and try not to get their back up over what was likely not intended as an insult.


I have thus far stayed out of this somewhat pointless debate…

Face orientation does NOT matter at all.
Face orientation matters an awful lot.

If you want a model which you can share with others without complaints, or that is to be 3d-printed, or that is to report solid with correct volumes, or that is to accept painted materials onto its surfaces in one go, or that will render properly in 3rd-party aps, etc…
Then you need to pay heed to the model’s faces’ orientation.

BUT if none of these issues matter to you… then face orientation is unimportant…

You choose…


Wow. I had no idea what was in the can I chose to open. Thanks to those who offered helpful info, and especially Tig, for the clear and reasonable reply.
Yes, I will experiment with some of the streamlined solutions mentioned above to quickly orient faces. I appreciate sound methods and organized modeling; wasn’t sure where face orientation fit into the larger picture beyond 3d printing and rendering situations.
The issues I’ve had usually arise out of follow me situations.
And the burrowing into seriously nested containers to do fussy fixes seems inelegant.
I guess the choosing will hinge on how I am using the model.

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