The tweezers used for clamping should also be cleaned in time. why do people think computers are the only things that require or use circuit boards? You can also store and re-use the solution. In contrast to Ferric Chloride, persulfates are almost completely odorless when a fresh batch is made, however, when the working solution nears the end of it's life it takes on a "rotten egg" smell which really lets you know the condition of the mixture. In the long-run, the cupric chloride will be doing most of the etching (instead of requiring disposal). In this type ferric chloride is normally available in 500gm packages, which is enough to generate one litre of etching solution. The acid I got is 31.45% (or 10M) and should run around $5 per gallon. I did get some good out of it because I found some errors, etc.) I didn't find your write-up here until Oct. 30th. ferric chloride works quite well enough. Advantages of wet etching. The problem with brass is its zinc content. Hi maxchu765...I got that at a local scrap metal supplier called Alan Steel here in the San Francisco Bay Area. Ferric Chloride - how diluting it with water affects the way it etches copper. Currently unavailable. What other items do customers buy after viewing this item? View in Order History. 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. The unwanted copper is dissolved when dipped into a chemical solution. Ferric Chloride. It's also impossible to add too much oxygen by adding air, so bubble/swirl to your heart's content. Be careful with the acid. (See video. So I deliberately dissolved a bunch of copper from a wire. Solution takes approximately 20 minutes to etch a PCB. Thinking that I might have rubbed too hard, I remarked all of the etched off traces and tried again. I put the thick end of the marker into the hole and left a good sized circle around the hole, thinking it would partially etch off. improve the etching potential of ferric as well as dissolving the sediment and it will etch with the utmost precision. 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. There are three common PCB etchants available in electronics stores: ferric chloride [FeCl3], … Hey coffeeoutlaw! I waited and gently rubbed, but nothing happened. Its great advantage over straight ferric is that it can be used in flat trays with the plate face up, as well as vertical tanks. )But how're you going to get CCiAHAS? but i dont think I'll be making this. And I decided a couple of 'pull-down' resistors were needed and I found an error in the logic, so not all was lost. 99. Thirdly, slowly dip your PCB … A simple indicator.I've been working like this for years and one liter of hydrochloric acid will last for many years. So I decided to remark the board a third time and try once more with the same result - so I let it finish. Dissolving copper is the name of the etching game. The tip is thin and I managed lines less than a millimeter. (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? How are you agitating the solution? 4 years ago. Hexahydrated Ferric Chloride (EN - SDS) Datasheet. Tip Open the bottle 3 times a day and squeeze it to expel the used air and suck in more.Etching can take place again after 1-2 days.When a brown precipitate forms again in the vessels, it is time to add a little hydrochloric acid. (A Better Etching Solution. is available at a hardware store. Etching your own circuit boards is tons of fun, but etching requires strong chemicals to dissolve the copper plating on blank circuit boards. I wouldn't recommend it anyway. Just normal laser paper & printer and Ferric Chloride. Sounds cheap and environmentally friendly to boot. You previously purchased this product. It turned out great. Sealable, shallow container* 11. PCB Etching Solution When we refer to the cheapest and readily available solution for PCB etching, then we are referring to ferric chloride. 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). Swirl more / continuously. It is strictly forbidden to grab it directly by hand. i have the same problem, and i am using 50% preoxide. Item Number . Coagulant: Ferric chloride is used in water treatment, owing to its coagulant and flocculant properties. Dark brown appearance. The ferric chloride etchant has limited usage in the industry because of the costly disposal of the copper-containing etchant. Etching your own circuit boards is tons of fun, but etching requires strong chemicals to dissolve the copper plating on blank circuit boards. Find great deals on eBay for ferric chloride solution. Ferric Chloride. New. This isn't rocket surgery.5) I do have an aquarium pump ($6 at fish store) that I've used to re-activate my solution. That's our starter etchant. Mix this powder with warm water and your etching solutions is ready. 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. Nasty stuff! on Step 5. Harmful to skin and eyes. £3.79 £ 3. Hydrochloric (muriatic acid, "pool acid", etc.) The etching method that [Switch and Lever] uses to get down to brass plaques will be intimately familiar to anyone who has etched a PCB before. I tried using the sponge method today and after 8 minutes I still have a copper clad board (less copper to be sure, but still continuity all around the surface. Do you know if anyone has tried PCB etching with Armour Etch? Contains 250ml of concentrated fluid, which should be diluted with 250ml of water before use. I found this article thru Google and I bought the muratic acid peroxide and acetone although I don't get what I do with it yet. The etchant lasts about a day. I was looking for ferric chloride at a hardware store with no luck. I was going to use a Dremel tool but decided against it. Successful realization of Wet Etching depends upon the selection of an appropriate chemical solution and etch material. Keep the window open for ventilation because the starter solution gives off a little chlorine gas. Both Sodium Hydroxide and Sodium Carbonate (washing soda) can be used to neutralise Ferric Chloride. Heat up a coil of copper wire on the stove to red-hot and you get a flakey coating of copper oxide. (https://en.wikipedia.org/wiki/Hydrofluoric_acid)You might try doing a google search for 'etch' and 'copper' and each of the chemicals above individually to see if they will etch or react with copper. I was able to wire the board and nearly got it working, still having trouble with floating inputs. Don't breathe it directly, and be sure you've opened the kitchen window. 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. 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). These PCBs have the clear epoxy core as you are asking for, and they are really thin and lightweight and great for tiny projects that need to be light.Unfortunately, Alan Steel doesn't do mail order or online ordering...just local.Thanks! Share it with us! Aug 9, 2018 - Stop Using Ferric Chloride Etchant! PCB Etchant Solutions. Reply 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. Question I did that using permanent marker. I use just enough water with mine to make it a higher concentrate for the wiping method. Ferric chloride is also used to make other iron salts, oxidant, catalyst, mordant and ink. I'll bet you'll never use the ferric chloride tub or tank immersion method again.I'm not sure if this low-volume wiping method will work with the muriatic acid and hydrogen peroxide etchant, but it is worth a try.Some information I read indicated that adding a small amount of citric acid to the ferric chloride will make it an even more effective etchant for use with the sponge or immersion methods. Lost. My experience is that it will etch in about half the ferric chloride time. Altronics CT-FC500. 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. The website's got a lot of good chemistry info on cupric chloride etching. I use a Scotch Brite pad and some dish detergent to scrub the copper clean, as shown in the first photo. This unique powder is ideal for removing ferric chloride stains from clothing, PCB tanks, work benches and other affected areas. additionally you can neutralize it with baking soda if your so keen on destroying useful things. 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 … 5 years ago, the powdered FeCl3 SHOULD have introductions on the back to dilute it with distilled water. Hope that helps! I still recommend it. You'll also need a non-metallic container that fits your PCB and two standardized measuring cups. I have the powdered FeCl3, how should I mix it to get the same results?? It's green. The mixture I am using is a 2:1 mixture of 3% peroxide to 30% hydrochloric acid. Did I miss something? I find it doesn't fume much at room temperature when I'm re-using a batch. Etchant Solution, Ferric Chloride, Bottle, 1.32 kg Weight, 945 ml Volume. FECL3P. 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. Item Condition. Perfect man! It's easy to tell when you're ready to etch again, because the solution turns green. Ferric chloride is also used to make other iron salts, oxidant, catalyst, mordant and ink. The problems that I encountered were mostly answered here, but for some reason I did not see them. Ferric chloride is a traditional home-use circuit board etchant. For the starter etchant itself, you only need two ingredients: hydrochloric acid and hydrogen peroxide. That worked much better, but the marker wore off as I said. The starter etchant you've just made, on the other hand, is not so bad -- around 3M HCl with a medium-strong oxidizer. Usually ships within 1 to 2 months. I grabbed myself two cleaning products from groceries store. :-), Reply that's just asking for issues. Next. I used the 1/8" shank carbide tipped drills available from Amazon. I tried this and was very surprised how well it works. The resulting CuCl2 shoud be a nice emerald green color.After you've dissolved a lot of copper into the solution, and used up all the peroxide, the copper chloride does most of the etching for you: CuCl2 + Cu -> 2 CuCl. This is good news. (Exclamation point! RoHS Status: Not Applicable Statement of conformity. 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. COO (Country of Origin): FR. Some final notes here:1) You can make quite a bit of this stuff very easily, and since you're re-using it, there's no real reason to skimp; put plenty of etchant in your "tank." 79. Without having done an actual test myself, I am going to guess the answer is "no". (And it's prettier too. 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. You will find lots of wonderful Instructables on this method. 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. )I stumbled on this idea when I saw this website: Etching with Air Regenerated Acid Cupric Chloride by Adam Sechelle. Delivery of other items on your order will be unaffected. Toss the PCB into the solution and it'll take off. Here, I need to assume few things before you start comparing the information with your PCB! Wiping isn't as fast as the author suggested. I am sure the more dilute solution will work. This small board took only 2 minutes. With is that all about? and the other one is some form of liquid soap used to remove stain on your clothes, contain 5% of Hydrogen Peroxide (H2O2). ("Do like you oughta, add acid to water" to minimize the chance of an out-of-control exothermic reaction.) Ferric chloride etching The ferric chloride etchant has limited usage in the industry because of the costly disposal of the copper-containing etchant. but the real issue is, when i put the second board in just a hour or 2 later.. it sat for hours with no etching, even scrubing the board after would not remove any copper, its almost as if after one use the solution completely neutralized. Worst case is that you may have to wait a few more minutes per etch with a sub-optimal bath. Then I realized I forgot to print the pads on this thru-hole board. Ferric Chloride Etching Granules to make a 1 Litre solution in water . 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. Now is it ready? But I still had to thicken up some of the lines and make the areas around the holes larger. Just mix it with warm water and start etching your PCB. Secondly, find a plastic bowl and fill some water into it before dissolving around 2-3 ferric chloride powder teaspoons in the water. When and if you do end up with too much copper etchant, please treat it like the hazardous waste that it is -- look into your local hazardous chemical disposal options. 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 … At first glance, the list of supplies is fairly standard: 1. For the next board, I plan to use the sponge method again with vinegar and hydrogen peroxide to see if I can succeed in making good traces. The exposed copper left on the board must be removed by use of an etching material, or etchant, such as ferric chloride, a yellow orange dark salt. This is the PCB Etching solution used to remove the copper from a PCB. Aug 27, 2019 - Stop Using Ferric Chloride Etchant! In just a few seconds of wiping, you will see the copper start to disappear!You will find that unlike the submersion etching method, the copper in the center of the board etches away first, so you might want to try to focus on the edges as you wipe.In less than a minute of continuous gentle wiping, your board will be fully etched before your eyes!Drop the etched circuit board into the bowl of water to stop the etching action.If you are etching multiple boards, you can rinse out the sponge, squeeze out most of the water, then re-apply ferric chloride solution if desired, but I have found that I can etch two 2" x 3" boards with one application. 237-5413; Mfr. 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). Mix the solvent with warm water and your etching solutions is ready. As you keep re-using the solution, you're going to need to add a little more acid and a little more peroxide every once in a while. 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 … This stuff is so active, though, that I'm not sure it's necessary. 1.4 specific gravity. You can also store and re-use the solution. Next time you use it, the color will deepen. FREE Delivery. Good surface uniformity. Pour the acid down through a small gap between the two glasses and re-seal. Overview. Luckily, we can whip up our own etchant at home with everyday chemicals! Ferric Chloride solution, commonly used for PCB etching and for “ageing” articles such as ornamental swords etc. In the laboratory it is commonly used as a mild Lewis acid for catalysing reactions. This is a test-plate in the ferric chloride. We have also carefully selected the best quality etchant for faster etching and long life! Best part is that, the solution can be stored and used multiple times! Still when I went to etch, the marker wore off and the etching process went on and on. When you use too little FeCl etchant, for instance, it can get saturated with copper and slow down which can result in long etching times and pitting or undercutting or worse. Ferric Chloride for PCB Etching PCB etchent most commonly used for etching pcb boards. The … ): Ferric chloride is a traditional home-use circuit board etchant. You didn't have any cupric chloride yet, but you can make it by dissolving copper. Copper etchant. $10.00. Mix the solvent with warm water and your etching solutions is ready. What's happening is that you're dissolving the copper from the board and turning it into cupric chloride. The 415 Ferric Chloride is an etchant solution for printed circuit board and photoengraving processes. Lastly who the heck buys a computer and takes it apart to etch the microchips? This stuff (at 10 molar) is strong. The AR412 is a liquid Ferric Chloride Liquid at 36°C B for dish etching in tray, which is in liquid form, brown in colour and pungent in odour, 110°C boiling point and it is soluble in water but reacts with water and acids. There are two types of chemicals that can be used for Wet Etching: Acidic Chemicals: Ferric Chloride (FeCl 3) / Cupric Chloride (CuCl 2) With the PCB in the solution, we gently rock the tray of Ferric Chloride to keep the solution moving. So naturally, I tried it.Whenever I have made circuit boards in the past, I did it just like most of us do. You can now carefully place the PCB into the Ferric Chloride solution. 3 months ago. Quantity . Reply Thank you so much. I managed to solve it by using a different pen for the relief (see picture attached! You can also store and re-use the solution. Does it add speed to the computer? Answer MULTICOMP. The amount of CuCl2 (vs CuCl) present is easy to diagnose by the color of the solution. 100 grams/liter maximum copper holding capacity. I also kick-started the formation of cupric chloride by first making copper oxide, which turns to cupric chloride just in the presence of acid alone. I tried this method using vinegar and hydrogen peroxide as the etchant. Details; Recommended; Reviews; Send; View Detailed Images 1. As long as you're in the hardware store, pick up some acetone if you don't already have some. They have huge piles of these large PCB sheets (maybe 12" x 18") for $1 per sheet. Reply Ferric chloride solution (I used MG Chemicals 415) 3. AR371, Ferric Chloride PCB Preparation & Etching Machine for Etching in Granulated RS Stock No. Every 15 minutes or so, when the activity seemed to stop, I removed the board, dumped the old material into a container and put fresh etching solution in the tray. Good surface uniformity. You can also store and re-use the solution. So being a reasonably smart guy, I decided that the vinegar I had was probably too old, so I stopped and went for some new stuff. 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). You can also store and re-use the solution. That means, 40 g of ferric chloride (anhydrous) in 100 g of solution. ), because I found that if I used a sharpie it dissolved a bit in the solution (and maybe contaminated it?). Judging from the amount of solution I was using, my copper clad is too thick OMG - they are 1 oz boards. Put on your rubber gloves.Open the bottle of ferric chloride and put the sponge over the opening, and tip the bottle to let about a tablespoon or so of solution saturate into the sponge.Now with the circuit board in the palm of one hand, simply wipe the solution-saturated sponge over the surface of the board over and over. Pack of 100g HIGH Purity Ferric Chloride Sodium Persulfate Used to make PCB B32. If this is the first time you're using this batch of solution (and I presume it is), it'll etch super-fast.
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