I tried to slice it today but I cannot slice it correctly. I tried to print poth parts seperated to avoid the purge tower that is needed to get rid of the old color. I have problems with the inner part, the walls are to thin, if I scale it to 120% I can slice it. It would probably work if the walls are thicker, 2mm should be fine.
The bottom of the outer part had a problem as well, I add a screenshot. Also it would be better if the bottom and outher walls are connected at the bottom to add the inner walls on top of the bottom.
The cable tunnel seems to be floating.