Hope this answers all your questions, and thanks for your posts.
tek4g63
How many pins?
I had 4 pound of pins and some gold plated jewery.
How much black powder?
75 Ml in a 500 ml beaker
How long did it take for the powder to dissolve?
10-15 min. 3 additions of clorox.
Also, did you wash the powders really well before moving to the HCl/ CL? Don't know if that would affect the color of your solution or not.
I washed until the rinse water was clear, and tested with amonia.
Geo
no didn't weigh
no iron material that I no off and my cell is pyrex ,lead,and copper mesh.
there is sediment in the bottom of the beaker (see pic).
ericrm
I did have some HP fiber cpu's but i don't remember any little springs,removed them with a torch.
The sulfuric acid i used is liquid fire and it had a red color to it (its dark now). You ask if i weighed the powder , I didn't dry the powder, after rinsing clean I added HCL/clorox to the wet mud. Should i have dried it? I used the instructions that Lazersteve posted in his reactions list, and i didn't see where He said to dry it, but that could be my mistake. I have done it before like this and got good results, with differant sulfuric acid and not as many pins.
Not sure how I'am going to proceed with this solition, any sugestions?