Tuesday, July 31, 2007

Styling Straight Weave



Now let's see how to make a PCB (Printed Circuit Board). While there are other ways to make a circuit, only talk about this because it is the best result is obtained.

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.

As for the role, anyone that layer type "glossy" (sticky, shiny) on the one hand, work well. There is also a special role just for these things, I personally got the best results. While it is not very cheap pays a lot. This special paper you can get in Paraná 207, for $ 10 approx. of 5 pages. What you can do is put many PCB you want to do and print them all on one page, and go using that you need.

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."

following is grab virulana or steel wool, and pass the plate untouched until it is shiny. Then wash and dry without streaking. If you want you can pass acetone to give a better finish, but not necessary. Once

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.



now on a wooden board, you have to support the paper with the blank PCB board, and pass the iron over about 10 minutes. As for the grill, got the best results with the maximum temperature, but with an average temperature. First allow the iron is hot. Then press your hand half of the paper on the plate to prevent movement, and the other with an iron hand press firmly other half until it is "fixed" to the virgin plate. After fixing the half, began to move carefully and do not push hard the plate to the other half, there is no air between the paper and virgin plate. Depending on the role will take approximately 10 minutes to complete the transfer. In these minutes alternating between pressing firmly the iron in different places, and move all the time. Firmly press the edges and center.

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,"

Finally plate immersed in cold water and wait 10 minutes. Then remove the paper plate. If stuck, you can use the virulana or steel wool to remove it when you throw water from the tap.

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.

now warmed some water in a metal pot or something. Carefully dip the bottle of acid to give a water bath. This is because the acid works best when hot. It is not necessary it is boiling, just warm it up a bit.

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.

At this point you'd have to have a board with tracks "black." Before removing the toner remaining plate tracks, it is better to make the holes where they will go the legs of the components. To make the holes need a 1mm drill bit high speed steel. The coal is easily broken. You'll also need a drill or a lathe. You have to get something that is comfortable and lightweight. Place the dish in a vise or something to hold and with a slow speed, you have to drill all the holes marked.


Another option is to get one of those media that transform your lathe or drill a hole in the bank. The truth they are very comfortable and easy to use.

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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