Brackets and mounts
Robot chassis base
- Bounding box
- 200 × 200 × 4 mm
- Engine
- 3D Printing B-rep
- Parameters
- 31
- Published
- November 5, 2026
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The prompt
Generate an OpenSCAD script for a 3D printable robot chassis base. The base must be a flat rectangular plate of exactly 200x200 mm with a thickness of 4 mm. Place the origin (0,0) at the bottom-left corner. The bottom edge (Y=0) is the REAR of the robot, and the top edge (Y=200) is the FRONT. Perform the following boolean operations: Wheel Wells: Subtract two rectangles on the left and right edges at the rear. Left well: X=0 to 35, Y=0 to 70. Right well: X=165 to 200, Y=0 to 70. Encoder Slots: Subtract two horizontal rectangular slots parallel to the X-axis (motor axle). Place them just inside the chassis from the wheel wells. Left slot: X=38 to X=55, Y=25 to Y=35. Right slot: X=145 to X=162, Y=25 to Y=35. (These slots are 17x10 mm to allow sliding the encoder). Ball Caster Hole: Subtract a circle with a diameter of 4 mm centered at X=100, Y=166. PCB Mounting Holes: Subtract four circles of 3.2 mm diameter (for M3 screws) forming an 80x60 mm rectangle, centered at X=100, Y=110. (Hole coordinates: X=60/140, Y=80/140). Cable Routing Holes: Subtract two 10x10 mm square holes for motor cables. Left hole centered at X=40, Y=80. Right hole centered at X=160, Y=80. Arm Area (Visual Guide): Do NOT cut this, but add an extruded line or thin plate to mark a 100x100 mm area at the front (from X=50 to 150, Y=100 to 200) to designate the free space for the collection arm. The script must be clean, well-commented, and use variables for dimensions so I can easily adjust the parameters later. Output only the OpenSCAD code."
Parameters
| Name | Value | Range |
|---|---|---|
| Base width | 200 mm | 100 – 400 |
| Base depth | 200 mm | 100 – 400 |
| Base thickness | 4 mm | 2 – 10 |
| Wheel well width | 35 mm | 20 – 80 |
| Wheel well depth | 70 mm | 30 – 150 |
| Right wheel well X start | 165 mm | 100 – 250 |
| Encoder slot length | 17 mm | 10 – 40 |
| Encoder slot width | 10 mm | 5 – 30 |
| Left encoder slot X start | 38 mm | 20 – 100 |
| Left encoder slot Y start | 25 mm | 10 – 100 |
| Right encoder slot X start | 145 mm | 80 – 220 |
| Right encoder slot Y start | 25 mm | 10 – 100 |
| Ball caster hole diameter | 4 mm | 3 – 8 |
| Ball caster hole X | 100 mm | 0 – 200 |
| Ball caster hole Y | 166 mm | 0 – 200 |
| PCB mounting hole diameter | 3.2 mm | 2.5 – 6 |
| PCB hole spacing X | 80 mm | 20 – 200 |
| PCB hole spacing Y | 60 mm | 20 – 200 |
| PCB pattern center X | 100 mm | 0 – 200 |
| PCB pattern center Y | 110 mm | 0 – 200 |
| Cable routing hole size | 10 mm | 5 – 30 |
| Left cable hole center X | 40 mm | 0 – 200 |
| Left cable hole center Y | 80 mm | 0 – 200 |
| Right cable hole center X | 160 mm | 0 – 200 |
| Right cable hole center Y | 80 mm | 0 – 200 |
| Arm area X start | 50 mm | 0 – 250 |
| Arm area Y start | 100 mm | 0 – 250 |
| Arm area width | 100 mm | 20 – 250 |
| Arm area depth | 100 mm | 20 – 250 |
| Marking depth | 0.6 mm | 0.4 – 1.5 |
| Marking line width | 1.5 mm | 1 – 3 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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