SpiderKnob – Web-Wrapped Shifter Knob for Thrustmaster TH8S

About

SpiderKnob turns the TH8S into something you actually want to grab. The body follows the comfortable, slightly rear-leaning teardrop of a classic H-pattern knob, and a raised black web wraps the whole head – from the centre of the dome all the way down to the base ring.

The web isn't just decoration: its raised strands (about 0.8–0.9 mm proud of the surface) give your palm a subtle, non-slip texture that you can feel through every shift, while the smooth red panels between them keep it comfortable.

Features

• Ergonomic teardrop shape – asymmetric profile leaning back ~14°, wider front-to-back than side-to-side so it sits naturally in the palm.

• Raised web texture for grip – 16 spiralling spokes and 13 rings, spacing grows towards the bottom like a real web.

• Fits the official TH8S adapter – the socket is built directly from Thrustmaster's official design piece, so it screws onto the adapter just like the stock knob. No glue, no screws.

• Two-colour print – body and web are separate bodies in the 3MF, ready for multi-material printing.

Dimensions

Files

spiderknob.3mf – both parts with colours assigned (recommended for MMU / AMS)

spiderknob_base.stl – red body

spiderknob_web.stl – black web

spiderknob_all.stl – both parts merged (single colour)

Print settings

Based on Thrustmaster's official recommendation for knobs:

• Material: PLA

• Nozzle: 0.4 mm

• Layer height: 0.2 mm

• Perimeters: 5

• Infill: 15 %

• Orientation: opening down, dome up (as exported)

• Colours: assign body = red, web = black. The web is a separate body, so it maps to a second filament without any painting.

• Single-colour printer: print spiderknob_all.stl in one colour – the raised web still gives the texture and grip.

Sliced (two colours, default settings): model ≈ 50 g (45 g red + 4 g black), ~16 h print time. Most of the time and extra filament goes into colour changes – to save material, enable "flush into infill" / "flush into object" in your slicer, or print in a single colour.

The adapter itself is printed from the official files (100 % infill, per Thrustmaster).

Mounting

1. Remove the original knob as described in the official TH8S instructions (pop off the top cap, undo the T20 Torx screw).

2. Fit the printed official adapter onto the shaft and tighten the T20 screw.

3. Screw SpiderKnob onto the adapter by hand – no force needed.

## Credits

Built on the official Thrustmaster TH8S gear knob files:

https://www.printables.com/model/1825116-thrustmaster-official-th8s-gear-knob-files

Made in Blender