sinkpad/noctigon remove the dielectric layer under the LED, direct heat path to the copper star, conventional, the heat has to soak thru a “heat insulator” to get to the copper star…result…LED runs about 10-15 degrees hotter…that heat = lower light and/or higher current and less life of the emitter
If you are really good…you can cut that center dielectric out, then solder the emitter…not as good but better than having that insulator between the emitter and the heatsink
