Printing the main piece had me nervous due to the instructions showing a failed print, but i used the settings specified and it printed fine. I had to sand the ends of the straight pieces a little to get them to fit. But it works great once finished. I like to place this on the left side of the Two Wheeler so it is getting 3 or 4 balls at a time to race each other to the bottom.
When I was young, my father brought home two wooden marble raceways similar to this module, only larger. My grandfather had made them back in the 1930s. Making and using your bridges module brings back memories of the fun my brothers and I had. Now I enjoy it with my 5 year old grandson.
Works great! Simple module, but fun to send multiple down at once. Easy to print and assemble.
I absolutely love this module, brings a lot of joy to my kid. Keep up the good work!