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Anonymous1771696066
02-21 21:51
Model Name
spur gear 3d model
Tags
machine
3d printing
realistic
Prompt
Create a 3D printable spur gear with the following exact specifications: Gear geometry: Type: Spur gear (straight teeth, parallel axis) Number of teeth: 9 Module: 0.8 Pressure angle: 20° Pitch diameter: 7.2mm (module × number of teeth = 0.8 × 9) Addendum: 0.8mm Dedendum: 1.0mm Outer (tip) diameter: 8.8mm Root diameter: 5.2mm Face width (gear thickness): 5mm Center bore — D-shaped shaft hole: Total bore diameter: 6mm Flat chord width (D-flat): 5mm The flat must be parallel to one tooth valley for proper alignment reference Bore must run through the full thickness of the gear (5mm) General design rules: No hub protrusion needed — keep the gear as a flat disc with teeth and central bore No lightening holes — the gear is small and needs full structural integrity Minimum wall thickness between bore and root circle: maintain at least 0.8mm All edges: add a 0.2mm chamfer on both flat faces to improve print quality and reduce sharp edges 3D printing orientation and considerations: Orient the gear with its flat face on the build plate (teeth pointing upward during print) Designed for FDM printing Recommended material: PETG or ABS for mechanical durability and heat resistance Recommended layer height: 0.12mm for tooth detail accuracy Recommended infill: 40% or higher Output: STL file Mating gear reference (do not model, for context only): The mating gear on the steering wheel shaft has 30 teeth, module 0.8, outer diameter ~23mm Gear ratio: 30:9 = 3.33:1 — steering wheel rotates 900° while this gear rotates 270°
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Anonymous1771696066
Anonymous1771696066