Aluminium Makercoin Trial

I wanted to have a go at making a maker coin just for fun. The coin has a topographic map of the UK on one side and a 3D scan of my head on the other. Many makercoins that I've seen on YouTube are 3D printed but I wanted to have a go at CNC milling one.

This project is my first foray into flip milling (2 sided milling) so I'm not expecting it to be perfect.

Design

I used a few different programs to put this model together.

The first was Skannect which I used to take a 3D scan of my head. The second is a website called [Terrain2Stl] which I used to get the depth map of the UK. I also used some software called Meshmixer to tidy both the head scan and the map and scale them to approximately the right dimensions.

The coin itself was put together in Fusion 360. I was able to design the main coin body and then import & place the STL files in the required positions

Manufacture

I used Fusion 360 to program the toolpath.

Test cuts

I used some laser cutter scrap to cut a wooden coin to test the size.

Cutting the real thing

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  Cutting one side
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  How the workpiece was clamped
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  'Clamping post' arrangement
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  Map Side
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  Head Side