Enclosures and housings
RC Car Chassis Base Plate
- Bounding box
- 381.0 × 635.0 × 8.0 mm
- Engine
- Precision B-rep
- Parameters
- 21
- Published
- October 14, 2026
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The prompt
Design a flat rectangular base plate for an RC car chassis as a single solid part. Units: millimeters. OVERALL SIZE - 635 mm long (Y axis) x 381 mm wide (X axis) x 8 mm thick (Z axis). - Vertical corners rounded with a 20 mm radius. - Flat top and bottom faces. 0.5 mm chamfer on the top and bottom outer edges. COORDINATES - Origin at the rear-left corner when viewed from above. X runs left to right (0 to 381). Y runs rear to front (0 to 635), so the front edge is Y = 635. - All positions below are hole or slot centers measured from this origin. - Every hole and slot goes straight through the full 8 mm thickness. No countersinks or counterbores. - Diameters below are the final finished sizes. Do not add extra clearance. ROUND HOLES (X, Y) Group A, 32 holes, diameter 4.5 mm, perimeter: - Rear row at Y = 12 and front row at Y = 623, each at X = 12, 71.5, 131, 190.5, 250, 309.5, 369 (14 holes). - Left side at X = 12 and right side at X = 369, each at Y = 62, 162, 212, 262, 312, 362, 412, 462, 512 (18 holes). Group B, 4 holes, diameter 5.5 mm: (60, 555), (140, 555), (241, 555), (321, 555) Group C, 4 holes, diameter 4.5 mm: (18, 93), (18, 117), (363, 93), (363, 117) Group D, 4 holes, diameter 3.4 mm: (165.75, 473), (215.25, 473), (165.75, 483), (215.25, 483) Group E, 4 holes, diameter 2.8 mm: (161.5, 310.5), (219.5, 310.5), (161.5, 359.5), (219.5, 359.5) Group F, 4 holes, diameter 3.4 mm: (50, 315), (110, 315), (50, 355), (110, 355) Group G, 2 holes, diameter 2.8 mm: (285, 335), (315, 335) Group H, 2 holes, diameter 2.8 mm: (180.5, 440), (200.5, 440) Group I, 4 holes, diameter 3.4 mm: (175.5, 385), (205.5, 385), (175.5, 415), (205.5, 415) Group J, 4 holes, diameter 3.4 mm: (175.5, 45), (205.5, 45), (175.5, 75), (205.5, 75) Group K, 1 hole, diameter 16 mm: (320, 45) Group N, 4 holes, diameter 3.4 mm: (280, 210), (340, 210), (280, 250), (340, 250) SLOTS (rounded ends, long side along the X axis) - Four slots, each 25 mm long x 4 mm wide, centered at (160, 125), (221, 125), (160, 235), (221, 235). - One slot, 80 mm long x 25 mm wide, centered at (190.5, 275). RULES - Do not move, resize, add, or remove any feature. Do not add text, ribs, or other details. - After building, list the number of holes per group. The total must be 69 round holes and 5 slots. OUTPUT - STEP file and STL file of the plate. - A 1:1 DXF of the top view showing the outline, holes, and slots.
Parameters
| Name | Value | Range |
|---|---|---|
| Overall Width (X) | 381 mm | 300 – 500 |
| Overall Length (Y) | 635 mm | 500 – 800 |
| Plate Thickness (Z) | 8 mm | 2 – 20 |
| Vertical Corner Radius | 20 mm | 1 – 100 |
| Top/Bottom Edge Chamfer | 0.5 mm | 0.1 – 2 |
| Group A Hole Diameter | 4.5 mm | 1 – 20 |
| Group B Hole Diameter | 5.5 mm | 1 – 20 |
| Group C Hole Diameter | 4.5 mm | 1 – 20 |
| Group D Hole Diameter | 3.4 mm | 1 – 20 |
| Group E Hole Diameter | 2.8 mm | 1 – 20 |
| Group F Hole Diameter | 3.4 mm | 1 – 20 |
| Group G Hole Diameter | 2.8 mm | 1 – 20 |
| Group H Hole Diameter | 2.8 mm | 1 – 20 |
| Group I Hole Diameter | 3.4 mm | 1 – 20 |
| Group J Hole Diameter | 3.4 mm | 1 – 20 |
| Group K Hole Diameter | 16 mm | 5 – 40 |
| Group N Hole Diameter | 3.4 mm | 1 – 20 |
| Small Slot Length (X) | 25 mm | 5 – 100 |
| Small Slot Width (Y) | 4 mm | 1 – 20 |
| Large Slot Length (X) | 80 mm | 10 – 200 |
| Large Slot Width (Y) | 25 mm | 5 – 50 |
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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