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Microphone - Single or Double Button Carbon Mic Replica (Working)

Creation quality: 5.0/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.


3D model description

This is a (WORKING!!*) replica of a single-button or double-button carbon mic from the 1930s/1940s, based off original schematics/diagrams.

I've put it together, and it works just fine.

NOTE: There's several different variations, depending on how separate or conjoined you want the parts.

Caveats: 1 - you have to build a driver circuit. It needs 9v to bias the mic. The circuit board layout is included as a print STL.
2 - You have to find an appropriate diaphragm material. It needs to be conductive. I've been using aluminum foil but there have to be WAY better options.
3 - YOU HAVE TO PRINT THE ITEMS VERTICALLY/UPRIGHT for accuracy, on a filament printer.
4 - You're gonna need screws, wires, and carbon.

NOTE: For the carbon, get those lab-grade carbon pellets for fish tanks (MAKE SURE THEY'RE THE CONDUCTIVE ONES, AND NOT THE COCONUT ONES!!) crush them and filter them through some wire screen, and you're good to go.

I've included an old schematic for the kind of mic this was loosely based off of, so if you're an electronics sort of person, you can see how this is supposed to work. ; )

Assembly of a similar model:

3D printing settings

221C PLA+

PRINT EVERYTHING UPRIGHT/VERTICALLY to preserve detail on the ridges to stretch the diaphragm.

3D printer file information

  • Design number: 1095630
  • 3D design format: STL Folder details Close
    • ELBase.stl
    • ELCarbonCup_ThreePiece-TypeC.stl
    • ELCover_OnePiece-TypeA.stl
    • ELCover_ThreePiece-TypeC.stl
    • ELCover_TwoPiece-TypeB.stl
    • ELFacePlate_ThreePiece_TypeC.stl
    • ELFacePlate_ThreePiece_TypeC2.stl
    • SchemBoard.stl

    Learn more about the formats

  • Publication date: 2023-03-03 at 13:18


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