Can't remember. But judging by the thickness of the perf board, which is 1/16, I'd guess 3/32.Looks good, John.
How thick is your aluminum heatsink in the last pic?
You may want to also consider allowing for replacement. LEDs fade and burn out eventually, especially if driven hard.Want to in-bed these in some epoxy resin to make a big lens, so heat is an issue.
I used resistors to simulate the 8w of heat wasted by the 10w lamp in pic and found that a 25mm x 25mm x 25mm ASIC black anodized five fin heatsink rose to just under 200deg and 265deg at 11.9w, so for your application I would think any TO220 heatsink would work. The trick is to get good contact without shorting the leads.Just how much heat do these new super bright LEDs produce?
For example:
If I took a 1 watt white one, drove it at max output, just how hot would it get?
Could I hold it in my fingers, or would I still need a hefty heat sink for it.
Bob