It took me a lot longer than I expected to get this print out. In theory it was really straightforward, take my turtle image and feed it through similar code as what I used to make the jellyfish, but… I recently added a MOSFET into my print system so that I can control the anodizing current by pulsing that (instead of print speed/voltage), but it led to a ton of EMI issues messing with communication with the motor controller. After changing my grounding paths many times and receiving a few fun 200V shocks I just re-wrote my controller code to be more fault tolerant, and that seems to have done the trick!
That looks sick!
But what is the material?
It’s anodized titanium - I developed a process to ‘draw’ the anodization layer. The thickness of the anodization determines what colors you see due to some cool physics of reflection/refraction. I have a lot of fun with it, but the setup I’ve built is pretty klugey so I probably spend more time improving and maintaining that than I do making prints 😅