I want to make an electroplating machine. I have a basic design with a bridge rectifyer, current limiting resistor/light, fuse, potentiometer and switch, but dose anyone know, if i can avoid useing the cyainde solutions ect... as in can i just take a chunk of silver and use it as the cathode and the copper item i plan to plate as the anode, (do i have that backwards?).... or will i have to use a sort of silver nitrate solution aswell..... and smoothing agents are there any that aren't restricted items??
You do not need or want to use cyanide. Use the nitrate or acetate. Don't use tap water as the Cl- ion will precipitate some silver.
HOWEVER, silver is lower on the electromotive series than copper; copper will dissolve to plate out silver.
If you put a bit of copper wire into silver nitrate solution, it will grow a fuzz of silver crystals.
THis is going to make plating tougher.... Getting a smooth coat will also be a problem.
I know that saccharine is or was used as a smoothing agent, but I don't know if it was for silver.
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