This module works great. Balls roll and roll and roll.

I like this one. Sometimes the drop into the half pike just bounces in the middle, instead of rolling in the pike.

This printed out fine for me. All parts fit and worked smoothly. I had printed other Modules from Out of Marbles and they also worked great. This was well worth the price and I wanted to pay for the work done on these units. I bought the hardware for Amazon. I did add weight to the left flipper as it would not drop with 100% in fill. It now drops with 3 marbles.

The two wheeler is a bit more difficult to print and make work than the others I've printed. The two issues I had were: 1. The marbles falling out between the wheels and the guard rail, and 2. the path needs to be perfect for the marbles to roll to where they should. On point 1. I fixed the problem by creating a spacer to go on the pin supporting the wheels. This moved the wheel closer to the guard rail and it solved that problem. On point 2. I was having a bit of a problem getting the long path across the top to print correctly so the marbles would roll to where they were supposed to go. I solved this problem by downloading the PrusaSlicer and using it to slice the files. I'm not sure if that was correct way to fix this, but it worked and now The Two Wheeler works perfectly!

Could not print with towers as part of base (failed ⅔ of the way up) but printed fine as separate pieces. looks great running.

I had so much fun with this and kids love it.

My grandson and I are passionate marble people.
This is hands down the best ever. The two wheels
and 3 modules, with internal direction changers, create
multiple patterns, and the ability to switch off with other
modules allows infinite permutations. The wonderful
color options are an added bonus and the modules are
not only diverse and interesting, but cleverly named.
We got quick and helpful advice from email inquiries, and
once we ordered the units were made and sent quickley.
We consider this one of our all time best toy discoveries,
for children and adults.

This is ingenious, interesting,
colorful, and interchangeable,
for endless permutations.
Lots of fun, continuing interest,
came quickly. Even the colors are
great.

Seller available and helpful on email.my
Great and unique marble roll and a lot of fun for my
grandson (and me!). Great color options.
Item well packaged and arrived in good shape.

It is very beautiful and fun, it is the one I like the most of all the models I recommend it

5 starts for making this free. Only problem I had was that the chain does need to be tight or it gets caught where the marbles enter. But taking the top off after putting one on is impossible. The layer lines act as velcro. I'd prefer a mechanical tightening system that used a screw/nut. I can see you want all plastic.. but I think some judicous metal will make the models last much longer. https://youtube.com/shorts/gey4UPcToms (your form won't accept this link)

Models and machines are well documented. And it is really fun to print them and see that it really works. I had very little afterwork.
Will buy next machine for sure.

Like all Out of Marble modules, prints easily without support. Works like a charm

This printed perfectly with no supports. The hardware package was installed in minutes. What a great toy.

Not only me als may Kids have a lot of fun