Smart fortwo - Radio Volume Knob Fix
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The easiest way to fix the gooey volume knob on the smart fortwo. Modeled to slip over the existing knob perfectly.
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- Printables
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- Automotive
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- Creative Commons — Attribution — Share Alike
The rubber coating on the volume knob on many smart fortwo 451s (and likely other models) evidently decomposes over time and turns into a messy black goo that rubs off and gets on everything.
To replace/repaint the knob, you need to take apart the whole dash and radio assemblies to get at the PCB and replace the encoder knob.
This fixes all that in seconds. Just slide this cap over the existing knob! The old tacky goo will keep it in firmly place. It can also be tacked in with some extra adhesive if desired.
This was modeled with decent precision using an actual smart car for testing.
Print recommendations:
Print with minimal support material and 0.05mm layer height (ULTRADETAIL) with color changes from black to white to black at 15.35mm and 15.95mm. This is what the included gcode does and will give you an OEM-like finished part.
Both PETG and PLA work fine. Excessive heat may distort PLA, but that shouldn't adversely affect this part.
Installation:
- Rub off some of the black goo with an alcohol wipe if you want light to shine through properly.
- Ensure support material is removed from the print.
- Press the printed part onto the knob.