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| General Electronics Chat This forum is for general chat about electronics, eg: Dont know what a part does? Dont know how to read a circuit? Want to get an opinion? |
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14th March 2005, 04:32 AM
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Home made PCB:ferric chloride concentration
I want to use ferric chloriode as an etchent for a home made PCB
Can some one plz tell me what should be the concentration of the solution i mean weight of ferric chloride in grams and the volume of water in liters I have ferric chloride in powder form |
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14th March 2005, 07:36 AM
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I find that the concentration is not absolutely critical - If it does not come with instructions, then I would say roughly 3 or 4 heaped tablespoons per litre. If you find it does not etch fast enough (assuming you have warmed the water), then add a bit more.
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14th March 2005, 02:08 PM
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It is also a Good Idea to add a Few Drops of Muriatic Acid (Hydrochloric Acid) to each ounce of the Ferric Chloride Solution.
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