Difference between revisions of "Chemical Etchants"

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Have you considered how much your business will sell for?
  
After masking off the parts of the copper-clad board you want to keep, you need to remove the parts you don't want to keep. This is usually done by chemically etching away the copper. There are a lot of different chemical techniques for doing this, each with its own advantages and drawbacks.
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At Hedgestone.com we help business owners sell there company.
  
None of these chemicals is incredibly dangerous, but they can all be toxic or caustic, and should be treated with care. Eye protection and gloves are a very good idea. Before you start, make sure you know how dangerous each chemical is, and figure out what you will need to do if you spill it or get it on yourself. Washing with plenty of water is usually a good start. For some chemicals you may want to keep a neutralizing agent handy. An MSDS (Materials Safety Data Sheet) for the chemical will give you some basic information.
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If you would like to discuss your options and valuation, feel free to book a call.
  
== Ferric Chloride ==
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https://calendly.com/hedgestone/business-merger-and-acquisition-consultation
This is the most common hobbyist etchant. Ferric chloride, FeCl<sub>3</sub>, is a brownish substance. It's usually sold in a bottle (dissolved in water, perhaps with a little acid or peroxide) or as a powder (which you have to dissolve in water).
 
  
When in solution, ferric chloride is a ferric ion (Fe<sup>3 </sup>) and a chloride ion (Cl<sup>-</sup>). The ferric ion reacts with the metallic copper on the circuit board in a redox reaction, producing a ferrous ion (Fe<sup>2 </sup>) and cuprous or cupric (Cu<sup>1 </sup> or Cu<sup>2 </sup>) copper. The chlorine is just along for the ride. The copper ion, unlike the metallic copper, is soluble, so it leaves the circuit board and goes into solution. The reaction products form a black sludge which settles to the bottom of the etching tank. After etching enough copper, all your Fe<sup>3 </sup> is used up and your solution is full of Cu<sup>1 </sup>, and you need to get more etchant.
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Thanks
 
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Israel Ramirez
== Ammonium Persulfate ==
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Israel.Ramirez@Hedgestone.com
Expensive
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469-809-5563

Revision as of 00:11, 22 March 2024

Have you considered how much your business will sell for?

At Hedgestone.com we help business owners sell there company.

If you would like to discuss your options and valuation, feel free to book a call.

https://calendly.com/hedgestone/business-merger-and-acquisition-consultation

Thanks Israel Ramirez Israel.Ramirez@Hedgestone.com 469-809-5563