I’ve had this problem once before, but last time I didn’t render so I thought it was part of Modo’s “style” of modeling.
It’s weird, you can select the polygons, but you can’t see them and they don’t render.
I’m not sure why this happened. If anyone has a solution, or a reason it will be much appreciated.
Thank you for the help!
Hello
You will need to select the offending polygons and press f to flip their normals.
WOW, worked beautifully!
Thank you so much.
What exactly am I flipping though? (just so I know)
Hi,
Modo (and Lightwave) render by default only one side of a polygon, since most objects are solid and showing the inside polygons is useless then (imagine a default cube : you don’t use the inside).
So what happens is that Modo assigns a “front” side to a polygon automatically and ignores the “back” side. But sometimes you want the opposite (imagine using the inside of the cube as the walls of a room). You then have to tell Modo to flip “front” and “back” sides by selecting the offending polygons and pressing f.
If you don’t like this behaviour, you can always go into Render Settings toolbar (up left) and select the Base Material under the Render arrow : all the way down in the Render properties (down left) you can tick the box Double Sided, which will render both “front” and “back” sides for you at all times.
Sorry to bug into this with ANOTHER question, but:
If you dont mind me asking, is this for Modo ONLY, or this is for other programs as well?
I export my models to render and use in Poser, and do you have to flip the polys for it before exporting, or leave it as is, and Poser will render it as a solid face?
Not sure if I explained it properly, I hope I did.
Thankx
At least Lightwave applies the same principle (I’m not familiar with all 3D programs).
And you shouldn’t have to flip before you export : if it is flipped OK in Modo, it should be OK in Poser (I don’t own Poser). And as mentioned, if you’re in doubt, just switch on the double-sided option.
But you should pay attention to the format in which you export to Poser. Not all 3D-programs import/export every format correctly. Just check which formats Poser accepts, experiment a bit and go with the one that gives the best results.
(if you need it, software exists that converts specifically between 3D-formats. But that should not be necessary in this case, I guess)
A shame you’re not using the Modo renderer, though 
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