Marble Run Blocks
Stackable marble run blocks: straight, curve, drop
No printer?
Printaro can print this design for you. Copy the link to your design and paste it in your message, so we know exactly which settings you chose.
Keep the tools free
Found this useful?
These generators are free to use. If one saved you time, a small Ko-fi donation helps pay for hosting, rendering and new tools.
About this generator
Build a run from a handful of block types. The groove drops 4 mm across each block, so set out each next block 4 mm lower (or stack them).
How to use
- Print a start block, then straights and curves in steps of 4 mm lower, and an end block.
- Put a drop block on top of any straight or curve: the marble falls into the groove below.
- Keep the same marble and block size for all blocks.
Printing tips
- Blocks print upright without supports.
- 16 mm glass marbles are the standard size.
Helpful guides
Frequently asked questions
How do the blocks connect?
Line them up on the table. Each next block should be 4 mm lower than the one before, because the groove drops 4 mm per block.
Which marbles fit?
16 mm glass marbles are the standard. Set Marble diameter if yours are different.
