AM Radio That Works!

by 3DSage, published

AM Radio That Works! by 3DSage 6 days ago


Design Tools

3DS Max

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2176Views 267Downloads Found in Electronics


I'm thrilled to unveil my new 3D printed AM radio! I was inspired by the diy crystal and foxhole radios of the early 1900's, but I created my own design to be as simple as possible. I made a few animations to help assist in explaining how this mystifying device can work with so few parts.

The video will explain the assembly so I hope you like it and thank you for watching!

1 Piezo Earphone
1 Coil of 24 AWG Magnet Wire (aka Enamel Wire)
1 1N34A germanium diode
1 small piece of aluminum foil
1 paper clip
1 package of Hildie & Jo 45 Cord Ends (3 small 5x10mm Springs)

These should be easy to find online. The springs I got are sold at Joann Fabrics. Search Silver Cord End Springs but any similar 5mm diameter springs should work.

Print Settings

Printer Brand:



Wanhao Duplicator i3 Plus









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Nice job. What tool did you use for your graphic presentation? I made my first crystal radio about 50 years ago, but I used an oatmeal box!!

That's great! I think crystal radios are great project everyone should try. For the graphics, I used a mix of 3Ds Max and After Effects. It may not have been the easiest tool but I like how it turned out.

Outstanding. I think my favorite part was how to make a diode. This is a great MacGyver lesson on basic radio and diode making. Now you just need to write a TV script on how MacGyver saves someone by making a diode then a crystal radio and using that to tune into the information they need to survive. :)

Yes that is my favorite part too! I almost cut it out of the video since it wasn't working but after a few hours I did get the MacGyver diode to work! I think there is a Gilligan's Island episode where the professor makes a coconut radio haha.

Thank you for saying that! :)