This is a 3D Printed marble machine on our latest Indie 3D Printer that takes marbles through crazy loops and turns. A marble machine designed in ONSHAPE is completely based on rigid bodies, rigid body joints and mechanics. The assembly has approximately 34 parts printed in ABS , and it can be powered by using DC motors or batteries. It uses a 1.5 cm diameter steel marble, which starts at the bottom, and goes to the top, and then returns to the bottom, making this trip about 8640 times in 24 hours.

Step 1: Identify Parts

This model is open source. Feel free to modify and/or 3D Print it. We have uploaded all the STL files on Thingiverse

Files to be printed

STL Name Quantity

Front & Back cover-1 .................................2

Front & Back cover-2 .................................2

Left Plate ....................................................1

Motor Cap ...................................................1

Motor Holding Block ....................................1

Right Plate(1) ...............................................1

Right Plate(2) ...............................................1

Outside plate(1) ............................................1

Outside plate(2) ............................................1

Bottom Part ...................................................1

Straight Stand ...............................................1

Stairs Support Back(1) ..................................1

Stairs Support Back(2) ..................................1

Base Plate .....................................................1

Stairs Support Front .......................................1

Coupling .........................................................1

Marble Guide ..................................................1

Stairs (1 to 10) ................................................1

Cam ..............................................................10

Step 2: Assembly Instructions

1. Join the following snap fit parts

Assembly A - Front & Back cover-1 and Front & Back cover-2 (2 Nos)

Assembly B - Stairs Support Back(1) and Stairs Support Back(2)

Assembly C - Right plate(1) and Right plate(2) {Fix bearing to Right plate(1)}

2. Join one of the Assembly A and Assembly B with M3 x 15mm cap screws.

3. Insert bearing in Left Plate. Join Base and Left Plate with M3 x 10 mm cap screws.

4. Join Marble Guide & Bottom Part – M3 x 15 mm cap screw.

5. Join Assembly of Step 3 & 4.

6. Fix Cam shaft on rod each at a distance of 10 mm with nut and grub screw.

7. Fix Cam Shaft into bearing of Assembly C & Left Plate. Now, Join Assembly C with on other end of the base with M3 x 10 mm screw.

8. Join Assembly of Step 2 & Step 7 with M3 x 10 mm cap screw.

9. Join the remaining Assembly A and Base with M3 x 10 mm cap screw and then join Stair Support Front on it.

10. First join Outside Plate(1) and Outside Plate(2) and then screw it to Straight Stand with

M3 x 10mm cap screw.

11. Join Assembly of Step 9 and Step 10.

12. Place Stairs 1-10 on respective cam shaft.

13. Place Motor inside the motor holder assembly and screw it with M3 x 10mm and M3 x 20mm. Now, fix coupling on motor shaft using M3 nut and grub screw.

14. Insert Cam Shaft Rod in coupling and tighten with grub screw.

15. Fix the base of the whole assembly to an acrylic or wooden base using M3 x 5mm.

16. Give Power Supply to motor and place the marble on the stairs.

Now, we you are ready with the marble machine assembly to play with it.

Introduction: 3D Printed Marble Machine by Maher Soft

Step 1: Identify Parts

Step 2: Assembly Instructions