Introduction: 3D Printed Speaker That Works!

About: I like to make things and I'm glad I can share it with you! I post the videos on YouTube - 3DSage

First of all, Thank you for checking out my tutorial! You are awesome.

Second, I put a lot of time into the YouTube video so watch it too, it explains it all.

Third, Please VOTE for this in the Plastics Contest if you like it!! Thank you for your support.

A speaker is easier to make than you think. I will do my best to explain how it works and how you can make your own with just 3 main parts!

I had no problems at all but use at your own risk.


Step 1: How Does This Speaker Work?

When electricity flows through a coil of wire, it turns into a magnet, an electromagnet.

That coil will now be attracted to the real magnets inside the cone.

Your music device will send out unique intensities of electric current causing the right vibrations that will vibrate the cone, that vibrates the air, that vibrate your eardrum, that we interpret as sound!

Step 2: Materials

The three main items are:

A pack of 3 strong 18mm magnets

The 3D Printed cone

and 32 gauge magnet wire


3D file:

Helper materials:

Scotch tape, scissors, lighter or knife blade, and 2 alligator clips (could be replaced with the magnet wire)

Notes: Magnet wire is also called enamel wire, same thing. Maybe you could replace the 3D printed cone with paper if you wanted to try that. If you have smaller magnets it should still work but you could try scaling the cone.

Step 3: Build the Speaker! Part 1

Leave a few inches of the magnet wire extended, then start tightly wrapping the wire around the base of the cone about 150 turns. (watch the video for reference)

Cut the wire but leave about the same length extended. Then take a piece of scotch tape and wrap it around the wire to help hold the coil in place and tight.

The wire has an enamel coating that we need to remove from both ends of the wire by scraping it off with a blade or by quickly burning it off with fire.

Step 4: Build the Speaker! Part 2

One end of the wire can be placed around the base of the headphone jack and the other wire can be placed around the tip of the headphone jack.

Take two piece of tape, about 3 inches each, and place them in a cross or plus sign.

Take the three magnets and place them in the center of the cross on the sticky side.

Place the magnets and tape inside the cone. Make sure the tape is tight.

Step 5: Done!

Turn on your music device and test your new DIY 3D printed speaker!

Troubleshoot: Try reversing the wires on the headphone jack. Make sure the coil is wound tight. Try adding magnets to amplify. Overall, I simplified the design and this should work and is a great practical teaching tool. Would be great for students.

Feel free to check out my YouTube channel - 3DSage. I create lots of different and fun videos! Thank you and see you next time!

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