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Picture of 3D Printed Telegraph Key & Sounder

There are some examples of 3D printed telegraph keys, but never a complete system — until now! This instructable contains all the 3D designs for both the telegraph key and sounder.

Step 1: Project Overview

Picture of Project Overview

Goals

There are some examples of 3D printed telegraph keys, but never a complete system — until now! In this instructable you can download all the .STL files and print your own telegraph system which can be downloaded on the last step.

Materials Needed

  • Magnet Wire
  • M3.5 Bolts
    • One 40 mm long bolt
    • One 20/25 mm long bolt
    • One 15 mm long bolt
  • Washers
  • C or D Batteries
  • Wood Screws — needs to fit in 3.5 mm holes
  • Four 6x3 mm neodymium magnets
  • Patience...
ebolson3 months ago
After watching the video it seems very hard to distinguish dit from dah with the clicks since it only sounds when the metal hits.
valveman6 months ago
Nice build and great you let people download the STLs.
MarkD3556 months ago
I have been waiting for a project like this!!! Hopefully the paper tape marker will be developed.
Mattosx (author)  MarkD3556 months ago
Hey Mark, I have been working on the paper tape feature. It works! I will be uploading the new design. It essentially uses the tip from an expo marker. There is an adjuster so it hits the paper with enough force to leave a mark, but not enough to stop the paper.
pemazzei6 months ago
Very nice project! Paulo, PY2PH