A320 MIP Lighting Panel ND Brightness Knob
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![Mark Ayton [MANTOGA]](https://media.printables.com/media/auth/avatars/c2/c285b5fa-c8f4-4c78-acd5-f9dc6a443f70.jpg)
Concentric knobs for ND brightness control on A320 family Main Instrument Panel
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Model information
- Source
- Printables
- Category
- Mechanical Parts
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
Reasonably dimensionally accurate concentric brightness knobs. To be honest, this design pushes the limits for a 0.4mm nozzle and would ideally be printed with a 0.2mm, but as the pictues show you can just about get away with 0.4mm.
The knob bodies are printed in matte grey PLA. The lightpipes / marker lines in transparent PETG and the black marker lines in matte plack PLA. All 0.15mm layer height, 100% infill, with 5 walls.
The lower knob has a hole for a 8mm shaft. The upper knob for a 6mm shaft. The lower one has a tgreaded hole for a short grub screw, but the upper knob needs to be glued in place.
Not much light makes it up to the upper knob marker line due to the large potentiometer shaft being in the way.
Compatible Concentric Potentiometers can be Sourced from Ali Express:
This is mounted with the mounting nut to the middle layer of a 3 x 3mm panel.