I'm considering trying to make a small LED light using one of those aluminum profiles that are sold with diffusers, and then soldering LEDs onto copper tape (I know this could be a bad idea for few reasons - mainly heat ruining the glue), but just as an experiment and soldering practice. In fact, if it turns out to be too impractical, I will not proceed with this idea as is.
I wanted to use either SMD LEDs like 5730, or those 1-3W ones that usually go on "star shaped heatsinks". Anyway, I can't just put copper tape on the aluminum, as I assume the heatsink aluminum it is conductive enough to cause problems even though there's an oxide layer (if my assumption is wrong, let me know).
To solve the problems of tape unsticking, I would consider adding some type of glue layer to ensure things stay in place.
Is there a suitable material (e.g. a tape) that I could put between the copper tape and aluminum for electrical insulation?
How would you do a similar thing, beside getting LEDs that already have a heatsink or making a custom PCB with aluminum backing?