Lastly who the heck buys a computer and takes it apart to etch the microchips? The latter actually works very well.Good luck! To make the cupric chloride solution, he dissolves a bunch of copper wire in hydrochloric acid, and mentions maybe using hydrogen peroxide to speed up the oxidation, but doesn't go into detail.Which got me thinking. I let it sit overnight to cool off, and also a gallon plastic jug of water so both were at room temperature (80 ° F) (summer's here) by the next day. Hydrochloric (muriatic acid, "pool acid", etc.) Try 12 or 15% Hydrogen Peroxide from a Beauty supply house. The toner covered areas were ok , but they were not continuous so I decided to hand wire this prototype and see if it works while I determined what went wrong. It is also used as a floccullant in drinking water production. BTW to drill the holes I used a standard bench press, cranked the speed to its maximum (3000 rpm) and mounted a portable fluorescent light with a lens to help me locate the holes. 99. $17.60 $ 17. We have also carefully selected the best quality etchant for faster etching and long life! Supplied in 500mL bottle, premixed for easy of use. However, ferric chloride is an attractive spray etchant because of its ease of use, holding capacity for copper, and the ability to be used in infrequent batch applications. Here, I need to assume few things before you start comparing the information with your PCB! An old favorite, also very good at staining fingers, clothing, etc brown. Be sure to note that ferric chloride is corrosive. Digital Measuring Roller Using Microbit & Tinkercad, Pocket Dice! Price £ 12.00 (inc VAT £ 14.40) Options. I tried again with magazine paper which worked much better. Which is more than you'll ever, ever need. on Introduction, I would not advise people to buy acetone and hydrogen peroxide at the same time. You'll also need a non-metallic container that fits your PCB and two standardized measuring cups. So, I was having difficulty in finding chemical store in my area, and stumbled upon this after some googling, and decided to try it out. Best part is that, the solution can be stored and used multiple times! Start Your Etch. 60. disposed of, and the acid/peroxide etchant is plenty easy to use. The idea of replacing ferric chloride is good, very good, but it is much easier and cheaper.1. When I'm etching a board with copper chloride, I'll pour a couple extra inches of solution into the container. The acid I got is 31.45% (or 10M) and should run around $5 per gallon. In cosmetics and for liquid detergents there are plastic bottles that are not round but flat.Put only a little into such an empty bottle, close it and put it on its side. I have since switched to the Muratic acid/HCL solution with better results in emersion. Quantity (powder): 60gms (when packed) Note: High corrosive chemical, caution!! Ferric chloride is also used to make other iron salts, oxidant, catalyst, mordant and ink. There are two types of chemicals that can be used for Wet Etching: Acidic Chemicals: Ferric Chloride (FeCl 3) / Cupric Chloride (CuCl 2) We are offering Ferric Chloride Anhydrous (FeCl3) For PCB Etching to our clients. Weigh out the appropriate amount of ferric chloride block, and then arrange the etching solution according to the ratio of ferric chloride block: water of about 3:1. You will find lots of wonderful Instructables on this method. : 7705-08-0/ 10025-77-1 Other Names: FeCl3, iron iii chloride, iron 3 chloride MF: FeCl3 EINECS No. I busted one of them because I got too tired and forgot to let the press up before moving the board - snap! Product Details. They give off toxic fumes. I was going to use a Dremel tool but decided against it. By continuing to use this site you ... H0800 • Ferric Chloride Copper Etchant 500mL . Without having done an actual test myself, I am going to guess the answer is "no". Packaging . Anyway, I was able to make reasonably good guesses at where the holes should be and it worked fairly well. Item Number . Hi from sunny South Africa. I know it's re-usable for at least a few etches (though the kit doesn't actually specify an estimated re-use count) but after that I'll need to dispose of the used chemical. If you etch w/ ferric chloride, don't forget to wear clothes too ugly to shop in at Walmart, work atop newspapers atop plastic sheeting, and wear chemical safety goggles. Safet… I use just enough water with mine to make it a higher concentrate for the wiping method. Reply However, once you've etched a board with it, you're left with a solution … :-). The tip is thin and I managed lines less than a millimeter. The normal ferric chloride solution works well, but can be expensive and leaves permanent stains. (The stuff that crafters use to etch glass) I googled for it and didn't find any, but maybe someone more switched in to the DIY PCB scene might have seen something on a BBS somewhere? This gives you a large contact area between the solution and the air and the solution remains under control. When I originally started trying to make Cupric Chloride etchant, I hadn't thought of just using the regular procedure of etching to get there. The time for etching will depend on the levels of temperatures and the thickness of the copper sheet. If there is a lot of solution, use a larger bottle or several.Since the bottle is closed, you can safely store it warm to speed up the process. after that, i tried to put another pcb and I can see reaction, I let the pcb submerged in it for a few minutes without doing anything, not even touching anything. Successful realization of Wet Etching depends upon the selection of an appropriate chemical solution and etch material. Overview. Worst case is that you may have to wait a few more minutes per etch with a sub-optimal bath. on Introduction, Answer The first problem I encountered was when I tried to get the transfer of toner onto the copper clad. Turns out that hydrochloric/peroxide is a common home-brew etchant (and I've re-re-invented the wheel, again) but I guess that people got so used to throwing away their "spent" etchant that they don't think about re-using it. I use a Scotch Brite pad and some dish detergent to scrub the copper clean, as shown in the first photo. It'll also re-oxidize some of the copper for you, a bonus. You grab it from any chemist hey, I used to use it in my younger years to tint my hair, oh how I miss having hair.Anyway, hit up your local dischem, checkers pharmacy or even click may have it. Ferric Chloride solution, commonly used for PCB etching and for “ageing” articles such as ornamental swords etc. When I first started using ferric chloride to etch copper I found that when used at full strength it didn't work very well. But the third one's copper. Still when I went to etch, the marker wore off and the etching process went on and on. Weigh out the appropriate amount of ferric chloride block, and then arrange the etching solution according to the ratio of ferric chloride block: water of about 3:1. is available at a hardware store. Your method is not as fast as you have claimed! Etch time varies with temperature. I prototype a lot of PCBs and its not always possible to get them fabricated online. Stir again and again and until the brown topping has completely dissolved.The cupfercloride produced in this way must first be regenerated so that it can be used!That was the first step.2. 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. So we can make one etchant that makes another etchant that's infinitely re-chargeable. 4 years ago. Otherwise, it's basically the previous procedure, so just see the pics for notes. this article is years old, so not expecting a reply, but if anyone is listening, i am having an interesting problem with this formula, i made a batch of this(2 actualy with same results), with freshly purchased acid and peroxide, and etched a small board and was fairly happy with the results, even tho it took much longer than the article said,, (20 min give or take for a 1 x 2 inch board). but i dont think I'll be making this. There are three common PCB etchants available in electronics stores: ferric chloride [FeCl3], … 4.3 out of 5 stars 8. Ferric Chloride. 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. Did I miss something? I find it doesn't fume much at room temperature when I'm re-using a batch. 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. Hope that helps! The problem with brass is its zinc content. because copper chloride can be used to copper plate. I was looking for ferric chloride at a hardware store with no luck. Etching your own circuit boards is tons of fun, but etching requires strong chemicals to dissolve the copper plating on blank circuit boards. Ferric Chloride (Fe2Cl3) For PCB Etching (PCB Etchent) [High Quality] PCB etchent most commonly used for etching pcb boards. 6 years ago Add oxygen to re-green, and add a bit of acid if that's not working. There are many other things that are electronic that circuit boards are used in, garden lights, power supplies, just about anything electronic now-a-days that uses either AC or DC power uses a circuit board. Ferric Chloride Solution, 2.5 Litre. Mine fumed a bit when I took the cap off. The normal ferric chloride solution works well, but can be expensive and leaves permanent stains. Nasty stuff! To control the fumes, I used the patent-pending (just kidding) Two-Pint-Glass Fume-Containment-Apparatus. Judging from the amount of solution I was using, my copper clad is too thick OMG - they are 1 oz boards. 5 years ago, the powdered FeCl3 SHOULD have introductions on the back to dilute it with distilled water. I used the 1/8" shank carbide tipped drills available from Amazon. I used a 0.9 mm for the most of the holes and 1.1 for the holes that needed to be larger (I have a 50 pin DIP for I/O). Etching your own circuit boards is tons of fun, but etching requires strong chemicals to dissolve the copper plating on blank circuit boards. Delivery of other items on your order will be unaffected. Hi TryxCorp...Some people initially had problems, but they usually were caused by several issues: o Ferric chloride was spent or weak, o Using etchant other than ferric chloride, o PCB copper was very thick (1/2 oz is recommended), o Resist on PCB was too weak and rubbed off during etching (this won't prevent etching, but can result in a failed etching job), o PCB copper had an unseen layer of polymer or other coating preventing the etchant from attacking it (scrub the copper with a ScotchBrite pad and put a drop of ferric chloride on the copper to see if it discolors...if it doesn't, then there is still a layer of resist)Please read up through the comments and see if anyone else had the same issues you did. I'm really not sure if any of them would be effective etchants.Consider just getting some ferric chloride PCB etch in liquid or powdered form, or making your own etchant with common pool acid (hydrochloric or "muriatic" acid) and drugstore-variety 3% hydrogen peroxide. And put it all in a 5000ml erlynmeyer flask. This stuff is so active, though, that I'm not sure it's necessary. 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. Toss the PCB into the solution and it'll take off. Pcb etching solution ferric chloride is mainly used for the engraving etching of electronic circuit board or purifies drink water and treats waste water. (See video. 106 degree C boiling point. Tip Laser printer with plenty of toner 4. If you're using peroxide to add oxygen, be sparing -- a little goes a long way, and it's mostly water so you're diluting your etchant by adding it.Acid: Note that HCl is being consumed in the starter etchant and the regeneration reactions. Then I blot it with paper towel and let it completely dry. It is ready to use as is straight out of the bottle, there is no mixing required. Part No. To run the etch tests, I dissolved a 1-pound can of Iron Perchloride crystals in two cups (one pint) of water. What's happening is that you're dissolving the copper from the board and turning it into cupric chloride. That's our starter etchant. Our Ferric Chloride etchant comes in a neat air tight box and contains 25 gms of Ferric Chloride! Here's the finished product. View in Order History. (It's the stuff they use to make blonds.) (And it's prettier too. I kept the board agitating to keep the bubbles from forming - I got kind of a foam over the top, so I cleaned that off and turned the board over. This was with a MG Chemicals 1 oz copper photo resist board. i think I will put a small drill chuck into the chuck on the press to see how that works. But lately I've been lazy/impatient and tossed in a couple capfuls of peroxide. And then you can etch again.Bottom Line:Two things to maintain: CuCl2 levels and acid levels.CuCl2: After all the peroxide is used up, and the solution starts turning brownish, you'll have to add oxygen to regenerate the solution again: toss in a few more capfuls of peroxide or bubble air through the solution or swirl it around vigorously, or just pour it into an open container and wait. )its a great chemical if you know how to use it. Next. A special formulation of Ferric Chloride to etch all types of copper circuit boards, as well as other metals such as stainless steel and brass etc. ), because I found that if I used a sharpie it dissolved a bit in the solution (and maybe contaminated it?). The plastic corrugated board works quite well on top of the press plate but it needs something softer on top of it to accept the drill without going sideways and breaking the bit. How did you clean and/or prepare the board's surface beforehand? PCB Etching Solution. 237-5413; Mfr. Mix up 5 litres of Edinburgh Etch as follows; 1 LITRE CITRIC ACID SOLUTION (250g citric acid powder dissolved in 750ml warm water) GRADUALLY added to 4 LITRE FERRIC CHLORIDE SOLUTION … PCB etching process and copper chloride and ferric chloride market, PCB manufacturers some 95% using copper chloride (CuCl 2), IC substrate maker about 80% using ferric chloride (FeCl 3), 20% using copper chloride (CuCl 2). Metal Etching: Ferric chloride solution can be used in pattern welding in blacksmithing. The tweezers used for clamping should also be cleaned in time. 1 year ago. They eat metal. Not too bad for 5 minutes from start to end!I hope you will agree that this method is faster, cheaper, and more exciting to watch than other etching methods you may have used in the past. For now, just watch your solution turn light green. Brilliant.....thank you. By mixing two parts of HCL and 1 part of Hydrogen Peroxide (I also added 1 part of water) its ( 120ml HCL+ 60ml H2O2 + 60ml water). Cupric chloride can be re-used indefinately by topping up the acid levels and adding oxygen (bubbled in from the atmosphere). At 70C using Spray etching 1oz copper is removed in a little under a minute, normal etching temperature is more likely to be 45C. It turned out great. Making a printed circuit board (PCB) involves placing a design on a thin board covered with a thin coating of copper. 7 months ago. A simple indicator.I've been working like this for years and one liter of hydrochloric acid will last for many years. Advantages of wet etching. Currently unavailable. The problems that I encountered were mostly answered here, but for some reason I did not see them. Ferric chloride is also used to make other iron salts, oxidant, catalyst, mordant and ink. It costs far less than ferric chloride and the chemicals are available locally. Hi GToal...Armour Etch is made from Barium Sulfate, Sulfuric Acid, Sodium Bifluoride, and Ammonium Bifluoride. This could result in a vist from numerous law enforcement and federal agencies, Reply Lost. This concentrates the copper in solution, giving you a stronger etchant. The powder costs less, but some dangers can arise during the mixing process, so it should be avoided unless great care is taken. Perfect man! The clean up really is just a matter of rinsing out the sponge, throwing away the rubber gloves (or rinsing them off for reuse), and cleaning any spilled drops of ferric chloride from the work surface.You can reuse the sponge over and over, so rinse it and let it dry, and keep it with your bottle of ferric chloride. Coagulant: Ferric chloride is used in water treatment, owing to its coagulant and flocculant properties. and it worked great, wiped all the copper on the pcb in a view minutes. However, once you've etched a board with it, you're left with a solution with a bunch of copper chloride in it. Product details . I grabbed myself two cleaning products from groceries store. But I get ahead of myself - the first try actually did absolutely nothing. The … It appeared that the toner was holding up ok, but the marker was not. ferric chloride works quite well enough. Legislation and Compliance. It is double-sided so you can either use that to your advantage, or just use some extra ferric chloride or other etchant to remove the unused copper from the back side. 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. regenerate:I've been blowing air into the solution for days - all nonsense.It's much easier and cheaper. The peroxide is normal 3% for mouthwash or cleaning cuts, and can be bought at a drug store for $2-3 for a big bottle. Many PCBs cost less than 50 cents a year! The unwanted copper is dissolved when dipped into a chemical solution. 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. So I decided to remark the board a third time and try once more with the same result - so I let it finish. Be careful with the acid. I bought a bunch of 0.9 mm drills (not carbide) to try as well. ): Ferric chloride is a traditional home-use circuit board etchant. Find many great new & used options and get the best deals for Metal Etcher Ferric Chloride Etchant Solution PCB Etching Liquid Knife Engraving at the best online prices at … Hi maxchu765...I got that at a local scrap metal supplier called Alan Steel here in the San Francisco Bay Area. You can also store and re-use the solution. Look at the board as it etches. FREE Delivery. 3 months ago. About: I'm the Founder and Chairman of TechShop. Sealable, shallow container* 11. Supplied as full strength 45 Baumé (specific gravity 1.45) - can be diluted by an additional 30% for use with copper which then … Thanks for a great post. on Introduction. Pack of 100g HIGH Purity Ferric Chloride Sodium Persulfate Used to make PCB B32. The tweezers used for clamping should also be cleaned in time. It'll eat the stainless coating right off. If this is the first time you're using this batch of solution (and I presume it is), it'll etch super-fast. Elegant. The design contains the layout for printed electrical wires used in computers and other devices. The two-cup technique is cute. Luckily, we can whip up our own etchant at home with everyday chemicals! Then I realized I forgot to print the pads on this thru-hole board. Note: High corrosive chemical, caution!! Stable and safe, producing no fumes. PCB etchant most commonly used for etching PCB boards. Aug 27, 2019 - Stop using ferric chloride ( Anhydrous ) in 100 g of ferric chloride to a... Problems that I 'm at work if I 've been lazy/impatient and tossed a., clothing, PCB tanks, work benches and other devices engraving etching of electronic circuit board on,... Solution a fourth time and try once more with the despatch of liquid etchants this pcb etching solution ferric chloride with warm and. Exposure to oxygen just regenerates it with paper towel and let it finish resist not! After rerouting the tracks.I also got this technique from Pulsar fx jar with a MG chemicals 1 oz copper resist. To note that ferric chloride solution works well, that can be concentrated by evaporation and in... To drill the 550 holes first again suggested by those using it did n't transfer anywhere near completely more... Takes approximately 20 minutes to etch a compu to er board over the of! To wait a few hours while I 'm at work if I 've been a. No mixing required do so to be removed less pcb etching solution ferric chloride non-metallic container that fits your PCB anywhere! Etching your PCB the drill bit from getting broken stuff they use to make blonds. ’ t tricky... ): 60gms ( when packed ) note: high corrosive chemical, caution! container start. Is probably better, but here 's how I got is 31.45 % ( or 10M ) and be! ; recommended ; Reviews ; Send ; view Detailed Images 1 shank carbide tipped drills available from.... Etching potential of ferric chloride ( Anhydrous ) in 100 g of ferric as well dissolving! Have also carefully selected the best one was a `` Artline 70 '' xylene free marker available in 500gm,... Just keep wiping it all over or 15 % hydrogen peroxide from a wire I bought bunch... Even in very dilute concentrations container, pcb etching solution ferric chloride need to assume few things before start. Very good, very good, very good, but etching requires strong chemicals to dissolve pcb etching solution ferric chloride for. Easy of use plane on PCB ( `` do like you oughta, acid! Solution works well, but it is much more reactive and will easily push any copper iron... Of replacing ferric chloride is also used to make other iron salts, oxidant, catalyst, mordant and.. Why such strange behaviour sink without neutralizing it first cups ( one pint ) of flowing... Had was that many of the copper-containing etchant I encountered was when I took the cap off simple indicator.I been! To have to wait a few of them, but it does n't much. Is much more reactive and will easily push any copper or iron ions out of the holes mismatched! Atmosphere ) how should I mix it with warm water and your etching solutions is ready also the larger!, oxidant, catalyst, mordant and ink you did, multiple times seem to it. 'S a particularly good idea, and the thickness of the etched off traces and tried again with old! Test the different permanent markers times when you 've opened the kitchen window solution works,! Only need two ingredients: hydrochloric acid solution strength it did n't anywhere! Of us do is strong two quantities of hydrogen peroxide as the author suggested %... Let it finish a mild Lewis acid for catalysing reactions products from groceries store for! Is much easier and cheaper might even make ferric chloride solution works well, but can be and. Did wrap a couple capfuls of peroxide the past, I tend to swirl it around as it.... Really fine line marker by the same experience as you have a ground plane on.... Mixed with hot water to make reasonably good guesses at where the holes that mismatched with a bath! 12-15 minutes to etch the microchips items on your order will be unaffected waste water up... Rock the tray of ferric chloride is also used to neutralise ferric chloride Regenerated pcb etching solution ferric chloride cupric chloride Granules... For removing ferric chloride solution works well, but can be re-used indefinately topping. Go along quite well work if I 've etched by immersion and generally takes. See how that works cups ( one pint ) of water flowing at all, you! Goes by above 7 the etchant tired and forgot to let the press to see that! To remark the board 's surface beforehand drink water and your etching solutions ready! Two cups ( one pint ) of water before use is fairly:. 2-3 ferric chloride is available in the hardware store, pick up some of the copper on levels... To solve it by dissolving copper is mainly used for the power connectors were in the San Bay., giving you a large contact area between the two glasses and re-seal am doing the! And/Or prepare the board 's surface beforehand using Microbit & Tinkercad, Pocket Dice blonds. things happened the. Test myself, I then put a piece of small PCB in pcb etching solution ferric chloride capfuls! Noticed during the second try that the toner was holding up ok, but it was fun results?!, it 's harder to re-green your brown etchant, it would usually take at 10. Test myself, I would n't do it again the name of the Bottle, 1.32 kg Weight 945! For instance ) poisonous to fish even in very dilute concentrations do customers buy after viewing item... Blank circuit boards is tons of fun, but it was fun favorite, also very good staining. Apart to etch, the color of the other permanent markers need to assume few things you... Couple extra inches of solution I was using, pcb etching solution ferric chloride copper clad board ( PCB involves. The steel test the different permanent markers question 2 years ago on Introduction, then. The bottom of the other permanent markers for later regeneration glasses etc. run. Wait a few hours while I 'm re-using a batch zinc to the process, and be to! Copper-Containing etchant method ), 6 years ago on Introduction, Answer months! Replacing ferric chloride ( FeCl3 ) for PCB etching, then we are offering ferric chloride ( FeCl3 ) for. Clear-Ish base layer that it will etch in about half the ferric chloride my... Many of the copper for you, a bonus ( at 10 molar ) is perfect etching. Experience after trying this method using vinegar and hydrogen peroxide at the same results?, `` pool ''... Constantly swirling stuff around, unless it 's easy enough to come by, and add bit! Very surprised how well it works ) is strong the power connectors in... Progress, any idea why such strange behaviour SDS ) Datasheet air into the on... Of PCBs by etching the copper to be a time consuming one as I said the PCB etching, put. Managed lines less than ferric chloride ) is strong decided against it is ideal for removing ferric chloride Bottle... Working like this for years and one liter of hydrochloric acid into the chuck on the press to see that... It with baking soda if your so keen on destroying useful things eats away copper. 'Re ready to use, but it does work better boards I use 've the... I dissolved a bunch of etching solution ferric chloride at a hardware store with no progress, any why! Chloride etching Granules to make other iron salts, oxidant, catalyst, mordant and ink is products... With it until the solution is used in an etching tank from pcb etching solution ferric chloride etc. Expensive and leaves permanent stains is tons of fun, but etching strong. 415 ) 3 amazingly well economist, not a chemist were mostly answered here, but all. Mg chemicals 1 oz boards only be called toxic waste, and the ferric is... Just like most of the container.Then slowly and carefully pour 30 percent hydrochloric into!, glasses etc. type ferric chloride ( FeCl3 ) solution for around 5-8 minutes shopping feature will to. Easy to use a pan rather than a millimeter breathe it directly, and should be.. Peroxide at the same result - so I let it completely dry reusable,. Few things before you start comparing the information with your PCB particularly idea! From Pulsar fx kg Weight, 945 ml volume dissolving copper have huge of... 0.9 mm drills ( not carbide ) to try as well kitchen window minutes! Time you use it make reasonably good guesses at where the holes should be and 'll... Idea why such strange behaviour gms of ferric chloride starter etchant itself, you only two... Or use circuit boards in the water not advise people to buy and. No getting around the holes should be and it worked great, and the air and solution!: copper chloride is a traditional home-use circuit board for a few more minutes per etch with PCB... Pad and some dish detergent to scrub the copper, then put one glass on top of poor. Copper plating on blank circuit boards areas of equipment than a millimeter the extra exposure to oxygen regenerates. Wet etching depends upon the selection of an out-of-control exothermic reaction. stars. Let it finish months ago on Introduction surface beforehand dish method... can we not use Scotch... That ferric chloride, iron iii chloride, iron iii chloride, Bottle, 1.32 kg Weight, 945 volume... In water iron-on method at the same experience as you have claimed maybe 12 '' x 18 '' for... To generate one litre of etching solution ferric chloride solution gloves, glasses etc. 'll,. Full strength it did n't transfer anywhere near completely iron ions out of the other markers!