Step by step instructions for AP processing circuit boards

[Taleeho]

I have many hundreds of AMD CPU’s with matrix of plated pins about 1 1/2 mm long on face. How best to remove and use AP? Thinking about placing them on a hot griddle then scraping pins off. Would tin from solder interfere with dissolving the Cu out?

 

[Yggdrasil]

I have many hundreds of AMD CPU’s with matrix of plated pins about 1 1/2 mm long on face. How best to remove and use AP? Thinking about placing them on a hot griddle then scraping pins off. Would tin from solder interfere with dissolving the Cu out?

Remove the Tin first with HCl, then go to AP or Nitric.

 

[anachronism]

If you use HCl to remove the Tin you'll find that the pins will fall off themselves. Are you talking about the green fibre ones with the heatsink attached?