Robot Chassis Base

Act as an expert OpenSCAD developer. Generate a clean, parametric OpenSCAD script for a 3D printable robot chassis base. Output ONLY the OpenSCAD code. General Dimensions: Base: 200x200 mm, thickness: 4 mm (Z from 0 to 4). Origin (0,0,0) is at the bottom-left corner. Y=0 is the REAR, Y=200 is the FRONT. CRITICAL INSTRUCTION (Anti Z-Fighting): To prevent floating skins, depressions, or rendering artifacts when the model is flipped, ALL boolean subtraction cuts (holes, slots, and cylinders) MUST be extruded from Z=-2 to Z=6 (a total cut height of 8 mm). Boolean Operations Required (Subtract only these): Wheel Wells (Rear): Left: X= -1 to 35, Y= -1 to 71. Right: X= 165 to 201, Y= -1 to 71. Encoder Slots (Horizontal, 25x10 mm): Left slot: X= 49 to 74, Y= 36 to 46. Right slot: X= 126 to 151, Y= 36 to 46. Battery Cable Hole (10x10 mm): Center at X=100, Y=30 (X= 95 to 105, Y= 25 to 35). Center Cable Hole 2 (10x10 mm): Center at X=100, Y=55 (X= 95 to 105, Y= 50 to 60). Ball Caster Hole: Cylinder with diameter 4 mm, centered at X=100, Y=166. Motor Cable Routing Holes (10x10 mm): Left: Center X=45, Y=80 (X= 40 to 50, Y= 75 to 85). Right: Center X=155, Y=80 (X= 150 to 160, Y= 75 to 85). STRICT EXCLUSIONS: DO NOT add any PCB mounting holes (no M3 holes). DO NOT add any engravings, depressions, or visual guides for the arm area. The top and bottom surfaces must remain 100% flat and untouched. Code Structure: Use variables for dimensions (e.g., plate_thickness, cut_z_min, cut_z_max). Keep the code clean and well-commented."

Parameters

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.