Anyone ever recover gold from electronics?

The wanna-be chemist in me wants to try this. I already have a lot of the things on the list of tools:
A full detailed DIY with pics:
http://www.instructables.com/id/Gold-recovery/?ALLSTEPS
I've got a couple old pc towers (one from 90's, one from 2000's), a couple old motherboards, an 80's tv, 90's printer, box of old 90's cell phones. I doubt I'll ever have time to give it a try, but part of me is keeping all this old stuff on a shelf in the basement just in case.
Has anyone here tried this?
Scrap electronics
Rubber gloves
Rubber apron
Goggles
Hydrogen Peroxide 3% I got from local pharmacy.
Muriatic acid 31% local hardware store.
Methyl Hydrate is 99.9% methyl alcohol it is used for fuel line antifreeze and can be purchased at your local hardware or automotive supply.
Funnel filter I used a drip coffee filter
2 large glass containers I like coffee pots for chemical heat.
Stir stick glass or plastic
Weigh scale mine is accurate to 1/10th of a grain.
Blow Torch hot enough to hard solder.
Borax
Clay bowls just about anything that has a melting point 500o above the melting point of gold will do.
Measuring cup anything you can use to make a 2:1 mix will do.
For three months of collecting, stripping, and dissolving electronic parts, [Josehf] netted 576.5 grains of gold, or at current prices, about $1500 worth
A full detailed DIY with pics:
http://www.instructables.com/id/Gold-recovery/?ALLSTEPS
I've got a couple old pc towers (one from 90's, one from 2000's), a couple old motherboards, an 80's tv, 90's printer, box of old 90's cell phones. I doubt I'll ever have time to give it a try, but part of me is keeping all this old stuff on a shelf in the basement just in case.
Has anyone here tried this?