Ball bearing toy

Just a sort of ball maze I put together from a handful of basic elements. It's one continuous loop for a 12mm steel ball. Printing it with FDM could be a bit tricky I'd guess.
Should be possible to print with SLS and then click the ball in.

Added a version with a 12mm ball for SLS printing.

This is an extended version of a thing I made before and printed with grey PLA on an FDM printer.

Since I don't have a dual extruder printer, I ordered a white thing in ABS from Reputech (https://ww