海绵+氯化铁=1分钟完成PCB雕刻（二）
0赞
发表于 5/29/2011 1:54:49 PM
阅读（1637）
Step 1What You Will Need
You don't need a lot of supplies for this Instructable, just the following:
o Ferric chloride (available at Radio Shack, 16 oz bottle for $10, part number 276-1535)
o Sponge (2" x 2" square, cut from any sponge, or paper towel will work too)
o Rubber Gloves (you don't want to stain your hands)
o Copper Circuit Board (one or two sided)
o Cup of water (to drop the etched board into to stop the etching)
Step 2Clean the Copper and Apply the Resist for the Circuit Pattern
There are lots of Instructables about how to apply the circuit pattern onto your copper, including peel and press, photo paper, tape, photo-sensitive emulsions, and even Sharpie pen. I will not touch on that part of the process here, but the method I prefer to use is laser printing onto a piece of Pulsar's dextrin paper and using one of their $70 personal laminators to apply the toner to the board. Then you rinse the paper and PCB under water and the paper slides right off, leaving the toner stuck fast to the board.
The key to any method of applying the resist is to make sure your copper circuit board is absolutely clean. I use a Scotch Brite pad and some dish detergent to scrub the copper clean, as shown in the first photo. Then I blot it with paper towel and let it completely dry. Never touch the cleaned copper, because oil from your fingers will cause the resist to not adhere to the copper, and the resist will come off during the etching process.
If you want to play with this Instructable right now and you don't want to make an actual circuit, just use a Sharpie pen to draw a little squiggle onto your cleaned copper circuit board.
In this case, I laser printed the Instructables robot onto Pulsar paper and applied it to the clean copper board with a laminator. Hey, it came out pretty good!
The key to any method of applying the resist is to make sure your copper circuit board is absolutely clean. I use a Scotch Brite pad and some dish detergent to scrub the copper clean, as shown in the first photo. Then I blot it with paper towel and let it completely dry. Never touch the cleaned copper, because oil from your fingers will cause the resist to not adhere to the copper, and the resist will come off during the etching process.
If you want to play with this Instructable right now and you don't want to make an actual circuit, just use a Sharpie pen to draw a little squiggle onto your cleaned copper circuit board.
In this case, I laser printed the Instructables robot onto Pulsar paper and applied it to the clean copper board with a laminator. Hey, it came out pretty good!
