Original Grey Technic motor from 1977: 6216a

[Santeri Piippo]

I will try and see if I can make it BFC certified (I'm color-blind, so red/green might not be the easiest for me to work with, but we'll see).

In LDView's settings you can disable the "green front faces" option, so the default color is used instead of green. Then you can choose the default color to be something that contrasts better.

It's always a good idea to optimize data-formats so processing is as easy for the CPU as possible.

Nowadays it's the GPU that does the back face culling, rather. Even if there's no graphics card the CPU chip has an integrated GPU. But having consistent winding has other algorithmical uses besides just rendering.