If successful the void in the paint could then be used to electrochemically etch the holes in the shaft encoder.
While not an instructable that's immediately accessible to a lot of people, hopefully you'll find the end result attractive and some of the instructions on prepping and painting metal useful. This instructable will hopefully serve as an introduction to several projects I'd like to publish over the next month.
Since shaft encoders are a bit boring, I also etched a graphic by HiddenPower, gmjhowe's logo and the hackaday logo to see how solid images looked as well as to give me a more interesting title image. I think they turned out great!
Step 1: Tools & Materials
- laser cutter
- bead blaster (optional, bead blaster not sand blaster since it's finer)
- something to cut the metal with (bandsaw, hacksaw, tin snips, guilotine)
- stainless steel sheet (I used 0.6mm)
- Plasti-Kote Woodstove Black
- acetone (or other cleaner/degreaser... IPA, Flash, Limonene)
- emery paper (if you don't have a bead blaster)
Sorry, there's no picture of all the tools in one place, getting the bead blaster, laser cutter and all the other bits in one place would be impossible! Instead, here is a picture of PKM, gmjhowe, Kiteman and Lemonie crowded around our laser cutter.