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Project:PCB Making/Cupric chloride etchant: Difference between revisions
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Project:PCB Making/Cupric chloride etchant (view source)
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I understand from some sources that adding HCl to Ferric Chloride will also regenerate it and eventually the etchant changes to CuCl as above. I don't know how carefully that procedure needs to be managed, or whether it's better to start directly with the CuCl bath. | I understand from some sources that adding HCl to Ferric Chloride will also regenerate it and eventually the etchant changes to CuCl as above. I don't know how carefully that procedure needs to be managed, or whether it's better to start directly with the CuCl bath. | ||
I've set up a bath using this system and made the first pcb. Results are quite encouraging - I kept it at the low end of possible concentrations and ran it it 35 C (the tank will go to about 50), so fumes are acceptably low. It did a decent etch in 15 minutes. I used liquid developer from Mega, which takes about 1 minute.--[[User:Artag|Artag]] 16:49, 6 September 2010 (UTC) | I've set up a bath at home using this system and made the first pcb. Results are quite encouraging - I kept it at the low end of possible concentrations and ran it it 35 C (the tank will go to about 50), so fumes are acceptably low. It did a decent etch in 15 minutes. I used liquid developer from Mega, which takes about 1 minute.--[[User:Artag|Artag]] 16:49, 6 September 2010 (UTC) | ||
* The hackspace tank has now been changed to this system. It was set up using HCl and copper wire, left to disolve for several days. More HCl was added to reach the parameters described in the texts above. It's working well and we have found it occasionbally convenient to accelerate the rejuvenation by adding a litle peroxide. | * The hackspace tank has now been changed to this system. It was set up using HCl and copper wire, left to disolve for several days. More HCl was added to reach the parameters described in the texts above. It's working well and we have found it occasionbally convenient to accelerate the rejuvenation by adding a litle peroxide. | ||
