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Step 4Etch copper board
Make a good etching solution:
use 1 part Muriatic Acid (I bought a gallon at Sherwin Williams paint store for $12) to 2 parts Hydrogen Peroxide (the kind you buy at the Pharmacy for $2 a bottle). Always add acid AFTER adding Hydrogen Peroxide.
Use rubber gloves so you don't get burned by the acid.
You only need about 2 cups to etch this size board. It helps if you have an aquarium bubbler and some extra hose to place under the copper while it is etching, as this greatly speeds up the process.
1. mix solution (2 parts hydrogen peroxide, 1 part muriatic acid), and put into plastic container
2. place copper clad into etchant.
3. use bubbler to speed things up
4. when you see that the copper is completely gone, pull it out and wash off with water (outside).
The toner should still be there, and now you can wipe it off with a paper towel and some more Acetone.
Now you should have a copper circuit left, ready to drill holes in.
use 1 part Muriatic Acid (I bought a gallon at Sherwin Williams paint store for $12) to 2 parts Hydrogen Peroxide (the kind you buy at the Pharmacy for $2 a bottle). Always add acid AFTER adding Hydrogen Peroxide.
Use rubber gloves so you don't get burned by the acid.
You only need about 2 cups to etch this size board. It helps if you have an aquarium bubbler and some extra hose to place under the copper while it is etching, as this greatly speeds up the process.
1. mix solution (2 parts hydrogen peroxide, 1 part muriatic acid), and put into plastic container
2. place copper clad into etchant.
3. use bubbler to speed things up
4. when you see that the copper is completely gone, pull it out and wash off with water (outside).
The toner should still be there, and now you can wipe it off with a paper towel and some more Acetone.
Now you should have a copper circuit left, ready to drill holes in.
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