LEGO compatible Marble Run for 11mm Pachinko Balls - Starter Set

thingiverse

### LEGO compatible Marble Run for 11mm Pachinko Balls A marble run system for 11mm ball bearings. Use your LEGO brick collection for support structures and mechanical upgrades. #### Updates 02-Mar-2019: [See it in action](https://youtu.be/5hFpV7SFRR8) 27-Feb-2019: Added turnv2 block that completely removes the center peg. #### The complete system: * [Starter Set](https://www.thingiverse.com/thing:3252621) * Arches _coming soon_ * [Cubes](https://www.thingiverse.com/thing:3440642) * Elevator _coming soon_ * [Extras](https://www.thingiverse.com/thing:3457024) * [Pegs and Rails](https://www.thingiverse.com/thing:3462617) * [Towers](https://www.thingiverse.com/thing:3443006) * [Troughs](https://www.thingiverse.com/thing:3440649) * _what's next?_ --- #### Printing Notes * I print these marble run blocks with a 0.20 mm layer height, 20% infill, and (usually) no supports. (There are a few blocks in the system that do require supports. Please see the printing notes in each of the linked pages). * However, when printing _without_ supports, I experience two unwanted artifacts in the bridging across the LEGO compatible bottom when the block contains a vertical hole. I fix it by heating the bottom of the block briefly with a heat gun and pressing it against a genuine 2x4 LEGO brick. --- #### Design Notes * The top pegs are scaled down by 5%. Without this reduction, I found that the 'clutch' between two PLA printed blocks was too great and the PLA pegs would break off. --- #### Acknowledgements * [Parametric Lego Brick](https://www.thingiverse.com/thing:231651) Thanks to Andrew Sweet --- #### Disclaimer * LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this thing.