Generate a precise parametric part and host it: AutoCAD-compatible DXF (2D, layers), STL (3D, ready for printing/CNC/slicers), SVG drawing, an interactive 3D viewer, mass and specs. Parts and their params: gear {module, teeth, thickness, bore} (true involute profile); plate {width, height, thickness, corner_radius, hole_diameter, hole_inset, holes:[{x,y,d}]}; flange {outer_diameter, bore, bolt_circle, bolts, bolt_diameter, thickness}; enclosure {width, depth, height, wall, screw_diameter} (flat cut layout); shaft {segments:[{d,l}]}; pulley {outer_diameter, width, bore, hub_diameter, hub_length, groove_depth}; heatsink {width, depth, base_thickness, fin_height, fin_thickness, fins} (thermal estimates); hex_nut {across_flats, thickness, bore}; washer {outer_diameter, inner_diameter, thickness}. All dimensions in mm. Cost: 1 credit per call.