Sponge Ferric Chloride Method Etch PCBs in One Minute 5 Steps with PicturesIn this Instructable, I will show you how to etch a circuit board with about a tablespoon of ferric chloride etching solution and a 2 inch square sponge. You will be amazed as the exposed copper on the PCB disappears before your eyes, and your board is completely etched in a minute or less I found a passing mention of this technique of using a sponge with a small amount of ferric chloride on the Pulsar web site, and I was very skeptical that it could possibly work. So naturally, I tried it. Whenever I have made circuit boards in the past, I did it just like most of us do. I put the ferric chloride into a small tub, dropped the masked circuit board into the solution, and rocked it back and forth for a long time. Even with fresh, strong ferric chloride solution, it would usually take at least 1. As the solution grew weaker, the etch would take longer and longer. A few months ago, I discovered the 1 part pool acid muriatic acid to 2 parts hydrogen peroxide method of etching a circuit board. You will find lots of wonderful Instructables on this method. That method works great, and it made me mad that I spent so much money and effort with ferric chloride over the years when I already had all the chemicals I needed right at home to use this method. The down sides of the acid and hydrogen peroxide solution are that the muriatic acid can cause skin burns and is a little dangerous and damages things that it contacts. Vas Pc V15 Keygen Free more. Also, I found the etching solution to be quite aggressive which was great for fast etching, but I ended up with severe undercutting and partial obliteration of the traces, and the solution tended to be more corrosive to the resist materials I used, and partially dissolved the mask away during the etch. This weekend I tried this sponge and ferric chloride method to etch 3 Arduino shield boards I am prototyping for our RFID enabled member access system at Tech. ShopTech. Shop is the 1. DIY workshop with locations in Menlo Park CA, Portland OR and Durham NC. I was so impressed with the success of this technique that I decided to write it up as an Instructable. The method I will now show you gives you the advantages of all the other methods, and none of the downsides. Crime Scene Training A blog to teach the fundamentals of Crime Scene Investigation, and to encourage input, feedback and involvement from site visitors. I/51%2BXgcamZkL.jpg' alt='Zip Dry Paper Glue Msds' title='Zip Dry Paper Glue Msds' />Specifically o You get a fast etch much faster than either method I know of,o You use a tablespoon of solution, so disposal problems are eliminatedo A small bottle of ferric chloride will last for hundreds of boardso No tank or tub is needed, no heating or agitationo Undercutting is practically non existent, and the resist stays in placeo There is no need to try to reduce the amount of copper being etchedo The etch is so fast that it is actually exciting to watch and show your friends Lets get to it, shall weTechnical Information. As both the supply and demand of technical information, particularly of maintenance items and problems, has increased, this page should serve. A while back my friend asked an easy way to make a bottle rocket. Instructable was bornMake sure to wear the proper protective gear such as some kind of.