This is a model I designed for the ToyCars competition.
Assembling the steamroller.
Start by printing
- Main body
- Two wheels
- Roller Axles
- Rear Axles
- At least one roller (smooth, hex, grid, herringbone, etc)
All 3mf files have parts separated for multi-material printing
Recommended print settings:
- Layer height: 0.2
- Infill 15% Pattern: any structural (adaptive cubic, gyroid, cubic, etc)
- Supports, brim, etc: not needed
- Material: PLA
Step 1: Remove mouse ears.
The rear axle has some additional material to stabilize it when printing. After removal the axle should look like this
![](https://media.printables.com/media/prints/390520/rich_content/42606448-b4a9-437c-8ec2-573befabc67f/thumbs/cover/800x602/jpg/step_01_remove_mouse_ears.webp)
Step 2: lay out all parts to make sure everything's there:
![](https://media.printables.com/media/prints/390520/rich_content/72cc96f2-7df1-473e-a66a-026c120915e6/thumbs/cover/800x703/jpg/step_02_gather_parts.webp)
Step 3: Place hollow end of rear axle through the wheel and attach the hubcap
![](https://media.printables.com/media/prints/390520/rich_content/f634c60d-76bc-4a92-84ec-f0c1390aaa4b/thumbs/cover/800x785/jpg/step_03_assemble_wheel.webp)
Step 4: Attach wheels to body
![](https://media.printables.com/media/prints/390520/rich_content/15f470b4-1bb7-468d-a8f8-9d0a43da812e/thumbs/cover/800x916/jpg/step_04_attach_wheel_to_body.webp)
Step 5: Assemble slide in roller and attach the roller pins.
Caution: pins may get stuck if you assemble with excess force.
![](https://media.printables.com/media/prints/390520/rich_content/0d1fb09a-439c-483b-9280-a968281d89dc/thumbs/cover/800x654/jpg/step_05_slide_in_roller_and_add_pin.webp)
Step 6: Get some modeling clay or Play Doh and have fun
![](https://media.printables.com/media/prints/390520/rich_content/176dbdcc-224f-4a78-a87b-e424b6a61a27/thumbs/cover/800x530/jpg/grid_25mm.webp)
Tags
The author marked this model as their own original creation.