first thing to do is get the PCB of the project that we want to do or designed from a schematic and a copper plate untouched. Once achieved, we must print the "layout" with toner on special paper that is capable of transferring the toner to the copper plate untouched.
To print this type of paper need a photocopier or laser printer. The more "loaded" is the impression, the better it will transfer the toner to the plate untouched. Although some papers can be printed with inkjet printers, the ink will not transfer to the plate untouched. The board are going to be printed should be backwards, as if looking at a mirror (mirror). Generally these sites with PCB and have "mirror."
you have the PCB printed and cut and notice to enter the virgin plate. If there is extra space or you can draw with permanent marker fine some Millennium circuit for later use or you can cut that part is left for later use.
If you are unsure if the toner is being transferred, unfurled a tip carefully to see if the toner is on the board. CARE TO THE PLATE IS HOT. If you see that was not transferred "iron it again,"
If it was not completely transferred you can go through the clues with a permanent marker before placing it in acid. It is a matter of practice until you get it perfect, you have to experience.
Now comes the acid so you have to be careful. What makes the acid is "eating" all the copper that is not "painted", ie only Copper will be transferistes tracks. wear gloves. The acid causes irreversible damage to the skin. If you're half clumsy use eye protection as well. I say this in case: NOT GO TO TAKE THE ACID FOR ANY REASON. Place the dish with the layout in a plastic container in which not on too much space, otherwise you have to use more acid. NO OTHER USES PACKAGING, PLASTIC ONLY, AND DO NOT USE THIS PACKAGE AFTER PLACING FOOD.
carefully opened the bottle of acid. Poured carefully enough in the plastic container with the plate until the plate is submerged. No need to fill the entire container, but you cover the plate.
For best efficiency, you can pour the hot water I was in a plastic container larger than the plate, and this dip in the large, making him another bath.
Andá controlling each plate both moving the plastic container. When you see there is no more copper, take the container to a faucet or something, and carefully removed the plastic gloves and acid plate in the tap sumergila quickly, to be clean. Finally, make sure that no acid remained on the plate, and dry.
Now with the issue of what to do with the remaining acid is a real problem. Some saved for later use, obviously not going to have the same efficiency as before. I personally waste down the toilet. Obviously this is not the right choice. The right thing would be discarded in special place for toxic waste. If you're going to throw it down the toilet, first press the button and when agus is about to "go" strip all the acid careful not to touch another part of the toilet. Then I kept throwing water a couple of times. Tené careful because as you may have noticed the acid eats the copper, a metal, so do not go down well with the pipes that you throw acid.
Finally it is time to remove the toner from the copper. For this you can use the virulana with a little polish remover or alcohol. After anguage and dry. Now you have a plate ready to be welded.
(final photo)
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