Brackets and mounts
Robot chassis base
- Bounding box
- 200 × 200 × 4 mm
- Engine
- 3D Printing B-rep
- Parameters
- 36
- Published
- November 9, 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. CRITICAL INSTRUCTION (Anti Z-Fighting): To prevent floating skins or depressions when the model is printed, ALL boolean subtraction cuts MUST be extruded from Z=-2 to Z=6 (a total cut height of 8 mm). 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. The dimensions of each slot must be 27 mm horizontal (X) by 8 mm vertical (Y). Centered at Y=35. Left slot: X=38 to X=65, Y=31 to Y=39. Right slot: X=135 to X=162, Y=31 to Y=39. Center Cable Hole 1 (Lower): Subtract a 10x10 mm square hole in the center rear. Center it at X=100, Y=30 (X=95 to 105, Y=25 to 35). Center Cable Hole 2 (Upper): Subtract a 10x10 mm square hole slightly above the first one. Center it at X=100, Y=55 (X=95 to 105, Y=50 to 60). 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). Motor Cable Routing Holes: Subtract two 10x10 mm square holes for motor cables. Place them on the outer sides, right next to the wheel wells. Left hole centered at X=10, Y=80 (X=5 to 15, Y=75 to 85). Right hole centered at X=190, Y=80 (X=185 to 195, Y=75 to 85). 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 (X) | 27 mm | 10 – 60 |
| Encoder slot width (Y) | 8 mm | 5 – 30 |
| Left encoder slot X start | 38 mm | 20 – 100 |
| Left encoder slot Y start | 31 mm | 10 – 100 |
| Right encoder slot X start | 135 mm | 80 – 220 |
| Right encoder slot Y start | 31 mm | 10 – 100 |
| Cable hole square size | 10 mm | 5 – 30 |
| Lower center cable hole center X | 100 mm | 0 – 200 |
| Lower center cable hole center Y | 30 mm | 0 – 200 |
| Upper center cable hole center X | 100 mm | 0 – 200 |
| Upper center cable hole center Y | 55 mm | 0 – 200 |
| Motor cable hole square size | 10 mm | 5 – 30 |
| Left motor cable hole center X | 10 mm | 0 – 200 |
| Left motor cable hole center Y | 80 mm | 0 – 200 |
| Right motor cable hole center X | 190 mm | 0 – 200 |
| Right motor cable hole center Y | 80 mm | 0 – 200 |
| 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 |
| 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 |
| Engraving depth | 0.5 mm | 0.4 – 1.5 |
| Engraving corner radius | 1.5 mm | 0.5 – 5 |
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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