TH8S Diamond Knurled Shifter Knob
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TH8S knob with diamond knurling, a smooth domed top and accent ring.
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Updated at source:
Model information
- Source
- Printables
- Category
- Video Games
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
A compact, one-piece shifter knob for the Thrustmaster TH8S, with a smooth domed top and a diamond-knurled grip. I have tested the model and confirmed that it fits and works.
DESIGN
• 44 mm maximum diameter and 65 mm overall height.
• 35 mm tall grip band with shallow crossed grooves and flat diamond lands.
• Smooth crown and rounded lower body.
• Narrow recessed accent ring: paint it red or another color after printing. No separate ring or grip sleeve is required.
• The official Thrustmaster mounting socket is preserved. Use the official adapter.
FILES
TH8S_Knurled_Knob.stl — printable knob.
TH8S_Knurled_Knob.step — editable CAD solid.
Socket_Fit_Test.stl — smaller full-depth socket test for checking your printer tolerances.
Adapter.stl — unchanged official Thrustmaster adapter.
instructions-to-replace-th8s-knob.pdf — original mounting guide.
PRINTING
Import in millimeters at 100% scale. Print upright with the flat bottom and socket opening on the bed. Print the socket test first if using a new printer or material. Never scale the whole model to correct the thread fit.
Suggested starting settings from the official reference files: 0.4 mm nozzle, 0.2 mm layer height, PLA, 5 knob perimeters, 15% knob infill and 100% infill for the adapter. These are reference settings, not a documented profile from my test. Inspect your sliced layers, especially the threads and knurl transitions. Keep paint off all mating surfaces.
ASSEMBLY
Follow the supplied Thrustmaster PDF. Carefully remove the original top cap with a flathead screwdriver, undo the original screw with a T20 Torx driver and remove the remaining knob parts. Fit the official adapter to the shaft and secure it with the original screw. Screw the printed knob onto the adapter by hand without pushing or forcing it. Check clearance in every gear position and confirm the knob stays secure.
ATTRIBUTION & TRANSPARENCY
Remixed from “THRUSTMASTER : Official TH8S Gear knob files” by Thrustmaster / Guillemot Corporation: https://www.printables.com/model/1825116-thrustmaster-official-th8s-gear-knob-files