I've been looking everywhere but I can't find a thread that knows how to add support for more cube skins than 6. Using a copied model won't help, because I want to have a model with more than 6 skins. Is there some kind of compile value for the skin support that can't be changed or is there a way to change it? (I want to make a cube with a timer on it's glow ring).

Yes, you can decompile the model, edit its .qc file adding more textures names and recompile it again.

You can follow skotty's tuto about decompiling/recompiling.

Alternately, you can hex the cube model all the times you want, so you have for example 2 cube models, with 6 skins each one for instance.

If it's too complex for you, just pm me with the skins you need and I'll send the model back to you, k?

Thanks for the advice.