Spyder Common Ground

[Primus]

I am finishing up my Spyder power supply and I just noticed that the heat sink on all the voltage regulators is grounded to the case! Crap! After all this work to make a transformer isolated supply, they all have a common ground. What can I do? Unscrew where they are mounted and paint the inside of the case?

[soundcollage]

Mouser sells insulating spacers, made out of aluminum oxide, that transfer the heat to the chassis. They also have kits that contain all the hardware and a mica insulator.

[Primus]

I am going to try the cheap route w/ paint first. Next time I will use that. Thanks for the tip!