Tell us about yourself!
I did not 3D print this, but I certainly used the same principles provided by Gammawave for the design and construction. I happen to have a bunch of 1/2" sheets of old plywood in the garage so I decided to make use of them instead. I also had to change the shape to accommodate the 4" diameter planter pot I wanted to use. Anyway, my project was truly inspired by the Gammawave Instructable despite the differences!
Here is the YouTube video. I was having big problems soldering the little 3 mm LEDs with the 1" leads so I modified the design with a straightened wire running between two 10 mm LEDs. This helped a lot and the extra wires do not detract from the effects. The size is 14" x 14" x 14".
But there are support groups online to deal with the addiction. They help you to manage your life by making the dependence even more affordable. There are also other directions this habit can go - search "Colander Pour" and "lazy Susan pour" and "dirty pour with string art" and "dirty pour swipe with wet paper towel." These activities provide a lifetime supply of dopamine - on the cheap!
I do this on wood or MDF (medium density fiberboard), and instead of using gesso I just start with a coat of latex house paint and let it dry. Also, I use a heat gun instead of the butane torch - I have a torch but the electric heat gun is more convenient and seems to be just as effective. The Golden Rule you state is right on. I have a good success rate, but my failures are generally from moving the paint around too much after the pour.
Wow, great work! Question: Could you use the method you used for the hands on your face too? Of course you would do the trick of putting straws in the nose to breathe through. I think it would be a neat way to do a self-portrait.
I used your method to do the graphic below. This was my first attempt and I used Rustoleum paint because it was easier to find. Big mistake. I had paint crinkling problems the whole time. Not only that, but in my wisdom I thought that a clear coat would help hide the crinkling effects. It caused them where I did not have them before! You can bet that I will be using Montana next time, paying close attention to the instructions on the can, and foregoing any clear coat! However, in spite of paint difficulties, the masking tape stencils worked very well.