How to make an R2-D2 from scratch.
The R2D2 build logs.
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Polishing the dome, I used Brasso metal polish that I got at the Home Depot in the cleaning section. I applied this with a rag and used #0000 steel wool very lightly to do the polishing in sections so it comes to a nice shine and you can see a visible reflection.
My approach at sanding the dome used #0000 steel wool pads, and I sanded the dome several times until the glossy sheen was gone, but enough to make it still look older. The end result was very satisfying and was enough that I could polish the dome later on and make it shine. Here is the process used for sanding the dome.
My LED’s came in the mail along with the Arduino board from Sparkfun.com and the PCBs for the actual electronics.