@greyhead said:
The level indicators aren't lying flat on the surface of the mixer - see the picture below. You can rotate the panel back into place.
It's more difficult working on a sloping surface. I think that - for building - I would make the main surface horizontal; then rotate it to the right angle when all the components were complete. That way most of your lines will be in the XYZ axes.
I'd also make much more use of components, as well as making each mixer module a component, you can make each knob a component - then the knob geometry is only stored once - instead of the 400 you have now.
Bob
If you make the whole as a group, you can the edit it and re-orient your axis to match, regardless of the rest of the model. You can also change the axis at any time and reset it to it original when you're done.
Ciao
Mike RL