3D printed Marble Run

Everything prints with no problems and the fit during assembly is perfect. I only had one area, the loop exit, that I had to open up with my Dremel so ball wouldn't hang up. The screws are good quality, non-magnetic, so I couldn't use my magnetic screw drivers to make assembly easier. When testing the motor to make sure it was turning in the right direction, I think I over heated the motor and switch when soldering and re-soldering. I had to buy a replacement motor and switch....my bad.
The only serious major complaint is the instructions. The drawings on each step don't really show you where or how the parts go. You have to guess, sometimes, skip to next instruction, hoping to figure out exactly where a part goes. At least all the holes are spot-on so you can hunt for matching screw locations. All the instructions do is give you an order of assembly. Add and/or redo the drawings in the manual and you get my 5 stars.

Nice project, with 3 possible marble courses. I had to lay the stl's in different orientations than they loaded up as. I did find the assembly instructions a little confusing, but eventually got it together. One course the steel ball bearing that came with the hardware kit, refuses to complete. It stops at the top of the vertical loop and falls back. There is no obstruction because I can role marble machine around the axis and the bearing will complete the course, just not on it's own. I will likely block that course and run the other two courses. I am also interested in the pumper kit about to be released.

I haven’t received anything yet

This is one of the most interesting kits that I have built. The parts fit together PERFECTLY! It is definitely designed by someone who knows what they are doing.

I’ve printed several different marble runs but this one is by far the very best.