Photoresist etching PCB

Free UK Delivery on Eligible Order Great Prices On Pcb Photoresist. Find It On eBay. Everything You Love On eBay. Check Out Great Products On eBay Photoresist Etching Requires Attention to Quality. A completed, functional PCB cannot have problems with etch quality. Otherwise, the PCB will not meet the specifications required for use in consumer and industrial products. Fabricators define etch quality in terms of the uniformity of the trace edges, and the amount of etch undercut

Photoresist_PCB_Etching_Testing It seems to take approximately 15 minutes of immersion in the etchant solution. This figure was determined while agitation the solution. More time is likely necessary if the board was just sitting still in the solution. The solution was tested at room tempreature. A shorter immersion time would be likely if the. Remove the excess photoresist by cleaning the PCB with acetone. 2. Take your tinning fluid and fill it into an open container. 3. Put your PCB into it and leave it in there for about 5 - 10 minutes. 4. Take the PCB out of the solution and rinse it with tap water. 5. Pour the tinning fluid back into a glass bottle using the funnel PCB etching is the process of removing copper from a circuit board layer that is not protected by the hardened photoresist by immersing it in a chemical solution. The etching used by industrial circuit board fabricators is broken into two different processes: acidic etching and alkaline Etching PCBs With Dry Film Photoresist Since I do my own PCBs on a somewhat regular basis, I decided it was time to move to a more professional method to etch my boards. I have been using the cheap toner transfer method, using special yellow coated paper from China

DIY PCB Using Liquid Photoresist : I have been an avid electronics DIY guy for many years now, and I have spent a lot of that time struggling to learn how to make my own PCBs. I have tried every technique that I have come across on the internet, from iron-on print outs to dry photos Steps in the Etching of PCB Boards. Different steps involve in the etching of PCB boards. 1.Even application of Photoresist to the Copper made Clad Board The photoresist of PCB boards are UV sensitive that ensures the hardness when exposed to associated environments. It is covered by a negative of the copper layer image placed on the PCB Press film temperature:50℃-150℃±2℃Adjustable. Outsize: L830mm×W 1125mm×H1520mm. The Dry Film Photoresist Laminator is used for the lamination of photosensitive film and solder mask on PCB or other substrates. dry film roll laminator Pressure and speed can be adjusted according to different materials. photosensitive ink coating machine Make your own printed circuit boards with Negative Photosensitive Dry Film. You can make fine pitch professional quality PCBs at home.Say goodbye to all of t..

Got this to try to use as an etch resist for aluminum guitar pedal enclosure etching. Works like a charm. Finely wet sand your aluminum enclosure, clean with acetone. Cut a piece of this to the right size and peel off the back protective sheet. Apply this side down onto the aluminum surface. Press away any air bubbles After finish Photoresist application, Exposure, Development, Etching, then cut a margin. 2.Before Photoresist Application, wash your hands cleanly. Dust & Sebum is the cause of the failure. 3.Photoresist Application, Exposure time & Development are related. Thick coating film tend to make blocky, but failure(ex: pinhole) will decrease 1.2 PCB etching Pen. The PCB Etching Pen is more like a water-proof pen enclosing permanent ink. The ink contained in the PBC etching pen has properties which can resist etching. The pen has a nylon tip that enables fast manufacturing of the printed circuit boards The typical PCB (Printed Circuit Board) manufacturing operation today is building PCBs using a process described as pattern (electro)plating. In this process the outerlayer panel arrives at the etching operation with an etch resist of Tin or Tin/Lead protecting certain areas of the Copper foil, this defines the circuit pattern that will. The PCB should be placed in a 1 liter polypropylene, TashiBox Plastic Food Container / Food Storage / Soup Container with Lids, 32 Ounce - Set of 24 with a 2:1 H202 3%:HCL 31% new etching solution, for about 5 minutes, The 1 liter etch solution in the polypropylene container is placed in a 6 qt. plastic tray of very hot tap water, (~ 150F,) for.

Photoposit™ Liquid Photoresist. DuPont Photoposit™ range of liquid photoresists offers both negative and positive working products. Uniform thin coatings provide improved surface conformance, improved fine-line etching performance, as well as lower costs and reduced waste Don't you want to wait for the pcb delivery for weeks?With these instructions, you make the pcb yourself in an hour Increase lamination adhesion for the PCB industry companies will micro etch the surface prior to lamination. Lamination (Non-Chemcut Process) Hot Roll Lamination, to increase resist adhesion and to avoid photo resist wrinkling you should pre-heat the board before applying the dry film photoresist. Especially if the metal is thick

Pcb Online Order - Pcb Instant Quot

Hukai Photoresist Anti-Etching Blue Ink Paint for DIY PCB Dry Film Replacement 100g. $11.98 There are different ways to get the circuit board into the etchant, you can use a tight-fitting plastic can with a snap lid, which is constantly shaken slightly during the PCB board etching solution.. A little caution is required here: After the lid is put on, the remaining air in the can heat up and expands, which usually pushes a few drops of caustic outwards resist patterns to copper clad printed circuit board stock, ready for etching. Once you can feed the PCB through the printer for etch resist, you can then feed it back through the printer for solder mask (yes! Several people report that it works quite well!) and for a component silk-screen The photoresist method we use in PCB etching is a positive process, which means that when UV light hits the resist, it softens, and then is washed away. What remains is a positive of the PCB design. What this boils down to is that you will want a positive printout of your PCB design (black where there will be copper)

Buy Photoresist Pcb at Amazon - Check Out Photoresist Pcb

100g Photoresist Anti-etching Blue Paint for DIY PCB Photo

Video: Types: Fashion, Motors, Electronic

Get a Free UK Delivery on Eligible Orders. Get Your Newest Electronics Now In this issue, we show you how to etch a PCB at home using photoresist and sodium persulfate etchant. In the previous issue, we discussed the toner transfer method to etch a PCB at home. This required you to use a laser printer and glossy paper to mark the tracks on a standard copper-clad circuit board, and then use ferric chloride to etch the.

A Simple Approach to Litho-Litho-Etch Processing Utilizing

Years ago, the local electronics store sold small aerosol cans of MG Chemicals Positive Photo Resist, along with the complete line of PCB etching chemicals and equipment. They offered both positive and negative fabrication of PCBs. Since several years however, I can't find the Resist in aerosol can or any other form Whereas, in the inner layer, the photoresist is the etch resist. Methods of wet PCB etching. Wet etching is a type of etching process where the unwanted material is dissolved when immersed in a chemical solution. Two methods of wet etching are employed in common by the PCB manufacturers depending on the etchants used We etch PCB with sodium persulfate, which is dissolved in a concentration of 220 grams per liter in about 45 degrees of warm water. We always prepare the etching solution fresh, the etchant is inexpensive enough for it. You can also use the PCB etching solution several times until the PCB etching performance decreases DIY Printed Circuit Board Using Photo Etching Method Posted by Florin in DIY , Electronics , Personal Projects Although i linked to some DIY tutorials on printed circuit board making in the past, i decided to write my own tutorial to cover all the bits and pieces so that any beginner with no knowledge can obtain a PCB using the photo etching. Step 5: Etching the plate. First, put on the rubber gloves before placing some newspaper pieces on the bottom to avoid the spillover of the etching solution on the floor. Secondly, find a plastic bowl and fill some water into it before dissolving around 2-3 ferric chloride powder teaspoons in the water

Etching innerlayers involves cleaning the copper on both sides of the laminate, applying a photoresist, exposing the photoresist to create the innerlayer pattern, developing the resist, etching away the unwanted copper, and removing the etch resist. This process is automated in most shops, and the chemistry is automatically monitored PCB Laser Etching. Marco attached a strong laser diode to a CNC machine a while ago in an effort to etch copper clad board and build a few PCBs. The effects weren't spectacular, but the technique seemed promising. In a recent trial, [Marco] bought a low-cost laser engraver kit from China, and this technique seems to be a winner The etching is usually done using photoresist which is coated onto the PCB, then exposed to light projected in the pattern of the artwork. The resist material protects the copper from dissolution into the etching solution Presensitized Positive Photoresist PCBs. These pre-sensitized positive photoresist printed circuit boards are ideal for prototyping, student training, and small production runs. These PCBs provide high resolution and excellent fine-line control. The high-sensitivity positive resist coated on one ounce copper foil allows you to go directly from.

Pcb Photoresist On eBay - Pcb Photoresist On eBa

  1. PCB etching process is carried out to get rid of the excessive copper, and only the required copper traces are left behind after the etching process. The etching process can be carried out in a number of ways. However, the most commonly used method for etching is by using hydrochloric acid or ferric chloride
  2. The process by which photoresists are used to etch intricate and precise patterns in metal or dielectrics, known as photolithography or photo-etching, was a key factor in the rapid development of microelectronics in the 1950s and 1960s. (PCB) and integrated chips to define the circuit elements in a chip or PCB. The term photoresist stems.
  3. PCB photoresist method etching incomplete - only etched around borders of traces. Ask Question Asked 5 months ago. Active 4 months ago. Viewed 69 times 0 \$\begingroup\$ I'm trying to make PCBs for the first time, but I hit a roadblock and don't know how to fix the problem. I etched my 3rd developing attempt, but it looks like only the border.
  4. In this issue, we show you how to etch a PCB at home using the toner transfer method and ferric chloride etchant. If you have been following our 'How to design a PCB using EAGLE' series in Issue 34 and Issue 35, you would have designed a square wave generator circuit board that you could send off to a circuit board manufacturer.This tutorial uses the same square wave generator circuit board.

Photoresist Etching Requires Attention to Process and Qualit

Most inkjet etch resist ink products for PCB manufacturing are either phase-change wax inks or UV-curable liquid inks, but have drawbacks: they are either too soft or spread too much respectively. Dow's Lithojet™ 223 ink uses a different approach in ink design, combining the desirable attributes of both ink types PCB manufacture falls into one of two categories: milling or chemical processing. Each method has its pros and cons, but the method you choose depends on your capabilities and convenience. cleaned, and etched. After etching, you use a stripping solution to remove the polymer that protects the copper layer from being etched. While PCBs made. Designe specifically for use with our range of Kinsten blank PCB boards H 0772, H 0774, H 0782, H 0786. Removes unwanted PCB resist coating prior to the copper etching process. Supplied in pre measured satchel for mixing with 1 litre of water. 50g Negative working 40 micron dry film Photoresist for PCB and metal etching. Film supplied in packs of one roll. Roll can be used directly on roll laminators or cut to sheets for sheet laminators. Dry film Photoresist Developer is a special formulation specifically for the above dry film resist and is supplied in dry form

Photoresist Stripping Process. The photoresist stripping process follows the wet etching step and as a whole is less technical than the other wet processes. Basically, the resist needs to be in the chemistry long enough to strip.We build strippers for both positive photoresist and negative photoresist The first of three articles on the Develop-Etch-Strip process line. Most PCB Fabricators today are using negative working photoresist to produce innerlayers, usually a dryfilm type. The photoresist is typically developed using a dilute Sodium or Potassium Carbonate solution

Photoresist PCB Etching - NYC Resistor Wik

Meanwhile, the copper we wish to keep remains fully covered beneath the layer of photo-resist. The etching process is a very significant step in PCB manufacturing, therefore, requiring some special attention. Etching. In PCB fabrication, etching is a process of removal of unwanted copper (Cu) from the circuit board 4: Photo-imaging etching resist plating ink With the expansion of PCB material market, a kind of anti-corrosion and electroplating ink for pattern plating (also called anti-plating method) has also been introduced to China dry film photoresists for alkaline and acid etch and pattern plating: DOW: Eagle 2100 ED: Negative: printed circuit board manufacturing: DOW: Photoposit series: roller coated photoresists for printed circuit boards: DOW: Epic 2135: 193: 65 nm and 90 nm node processes: DOW: UVN 2300: Negative: DUV: implant and cell open applications: DOW: UV.

PCB Etching (prototyping) : 13 Steps (with Pictures

Copy Link. We're working on some new and exciting electronic kits, part of the process of testing these kits is to do a quick prototype PCB (printed circuit board). At the usual method is to use a laser print and transfer the image, then using etchant remove the unneeded copper. It's not exactly precise unless you're really good - so I. Thin traces requires very high contract (photo-stat) image for transfer with a low-UV absorbing glass to hold the image flat to the PCB to prevent undercutting the photo-resist, rapid etching to limit chemical undercutting (heated tank, agitation/bubbles) and slight dilution of ferric chloride to reduce viscosity and improve mass transfer Panels on a PCB pass through a vacuum chamber where the layer of positive photoresist is then pressed firmly onto the surface of the foil. The printed circuit pattern is positioned on top of the photoresist and the panels are exposed to an intense UV light. Etching is then undertaken to remove the copper-clad substrate 2020 popular Photoresist Dry Film Pcb trends in Tools, Computer & Office, Electronic Components & Supplies, Consumer Electronics with Photoresist Dry Film Pcb and Photoresist Dry Film Pcb. Discover over 188 of our best selection of Photoresist Dry Film Pcb on AliExpress.com with top-selling Photoresist Dry Film Pcb brands. Shop the top 25 most popular Photoresist Dry Film Pcb at the best prices

Fritzing. Etching is a subtractive method used for the production of printed circuit boards: acid is used to remove unwanted copper from a prefabricated laminate. This is done by applying a temporary mask that protects parts of the laminate from the acid and leaves the desired copper layer untouched. You can etch a PCB by yourself, in a lab. 5. Failure to achieve good release of exposed resist in a print-and-etch process on innerlayers can inhibit the formation of copper oxide multilayer bonder (or alternative bonders) on such a copper surface. 6. Failure to achieve good release of exposed resist in a plating process can cause etch retardation. Read the full column here

The PCB Etching Process and its Role in Circuit Board

  1. Creating a positive or negative print for use with photoresist coated board. When you wish to create a positive or negative printed image of the copper layers this can be achieved as follows. 1. In Windows set your default printer to a PDF printer. The Windows 10 Microsoft Print to PDF is suitable or select your preferred PDF printer
  2. PCB etching is a process of removal of unwanted copper In the outer layer etching process, the tin plating acts as the etch resist. Whereas, in the inner layer, the photoresist is the etch resist. Post Navigation. Previous Article The use and precautions of the rolling shearing machine
  3. LED PCB Solder Mask Ink All Colors With Heat Curing Screen Printing. PCB Printing Ink. White PCB UV Curable Solder Mask Oil Ink / Screen Printing Circuit Board Ink. Plastic Etch Resist Ink Photo Image Curable PCB UV Solder Mask With Acidic Etch Solution. Zinc Material Surface UV Curable PCB Ink , Photoimageable Curable Liquid Solder Mask.

Etching PCBs With Dry Film Photoresist - Experimental

169 pcb etching resist products are offered for sale by suppliers on Alibaba.com A wide variety of pcb etching resist options are available to you, There are 34 suppliers who sells pcb etching resist on Alibaba.com, mainly located in Asia. The top countries of suppliers are China, Taiwan, China, from which the percentage of pcb etching resist. PhotoResist PCB Etch. Lawrence Lile says: I went round and round with all kinds of iron-on PCB transfers, and other unsatisfactory methods. Started out with a laundry marker drawing PCB's by hand back in the '70's. Do some studying and set yourself up to make photoetched PCB's, you won't regret it. I use Kepro^ for photoetching supplies. They. Photoresist Dry Film for PCB etching. Metal Etching work. US $90.00-$125.00 / Roll. 2.0 Rolls (Min. Order) CN Beijing SXY Electronic Technology Co., Ltd. 4 YRS. 100.0%. 5.0 (4) Contact Supplier. 1/6. PCB Portable Photosensitive Dry Film for Circuit Production Photoresist Sheets 30cm x 5m For plating hole covering e

Cheap Insulation Materials & Elements, Buy Quality Electronic Components & Supplies Directly from China Suppliers:30CMx1M 1M Portable Photosensitive Dry Film for Circuit Photoresist Sheet for Plating Hole Covering Etching Producing PCB Board Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return dry film photoresist manufacturer/supplier, China dry film photoresist manufacturer & factory list, find qualified Chinese dry film photoresist manufacturers, suppliers, factories, exporters & wholesalers quickly on Made-in-China.com. Auto PCB Etching and Stripping Film Machine

DIY PCB Using Liquid Photoresist : 6 Steps (with Pictures

Photoresist Single-sided copper-clad fibreglass PCB laminate photoetch board coated with a high resolution photo-resist.. Microtrak laminates consist of FR4 epoxy-glass laminate sheets, dip-coated with a positive working photo-resist.The photo-resist contains a dye that provides a good contrast against the copper and allows boards to be easily inspected at the developing stage I always use enamel paint to resist ferric chloride etching. Works like a charm. The biggest problem with this method is painting on the PCB pattern with a fine artists brush

PCB Etching for Design - wellpcb

  1. 1 bottle × Photoresist Anti-etching Blue Ink Paint. [Features] It has excellent photographic performance and corrosion resistance. Weight: about 100g. The blue paint needs dilute before you use it. Due to the difference between different monitors, the picture may not reflect the actual color of the item
  2. utes on dia
  3. The PCB was then added to an etching solution to scrape 1036 Dry Film Photoresist Application to a Printed Circuit Board The PCB with photoresist dry film was exposed to a black color from.
  4. utes. (UNTIL ETCH ALL EXPOSED COPPER) Check your pattern !! 9. Cleaning. Ferric Chloride etchant will damage anything, so clean PCB, container, table with WATER immediately. REMOVE PhotoResist by ACETONE, then Alcohol and WATER !! 10. Drill hole
  5. A method to add a layer of etch resist to a PCB without toner or laser printer. A method to apply an etch resistive layer to PCBs without a laser printer. Using a 3d printer, cnc machine, or craft cutter and a $15 laser from eBay. This method uses the 'UV Oven' project or other suitable UV exposure method..and a borosilicate glass plate with an.
  6. ates from CIF to their range, including 70 micron (2 oz.) copper, 0.4 and 0.8mm mm thickness and PTFE (Duroid). They also have a reasonable range of general PCB materials, as well as a range of UV tubes (search for 'insect killer' on their site))
  7. Acid Proof PCB Etch Resist & Film Opaquer 2in1 Pen 0.1mm Acid Proof Opaque Pen can easily correct pin hole, short-circuit and marking on the printed circuit board. Pen also doubles as a film opaque pen. Being acid resistance, corrected part applied by Acid Proof Opaque Pen will not be etched. After dried, it does not stick on the surface of glass or other materials

Photoresist coating, masking and CERN using proprietary process Process based on anisotropic exposure to UV light Mtl h i l Process based on anisotropic etching of polyimide M e ta l c h em ica l etching Kt h i lKap ton c h em ica l etching Second maskingSecond masking Metal etching and cleanin The tin is required as an etch resist during a subsequent etching operation. Plating of copper in the holes is typically 0.001 followed by a tin plating of 0.0003. Copper is by far the most common plated metal due to its low cost, easily controlled, and the mechanical/electrical properties are both good DRY FILM PHOTORESIST. Our LONGLITE® dry film photoresist is negative and water-soluble type with good resolution and adhesion. It is suitable for various processes, such as acid etching of fine lines, tenting, electroplating copper, and other PCB manufacturing processes. Product Application Etching is probably the easiest and most cost effective. Etching is the process of chemically removing the unwanted copper from a plated board. You must put a mask or resist on the portions of the copper that you want to remain after the etch. These portions that remain on the board are the traces that carry electrical current between devices.

Photo resist coating machine - PCB etching machine photo

1) Pattern Plating and Etching. After PTH, both the hole and the surface of PCB are copper layers. First, the surface of MLB is coated with the photoresist, and it is exposed in a specific wavelength range in order to polymerize the photoresist that is not covered by the patterns Cheap Gas Welding Equipment, Buy Quality Tools Directly from China Suppliers:100g Photoresist Anti etching Blue Ink Paint for DIY PCB Dry Film Replacement Now save -33.32 USD $34.22 3 in 1 Hair Dryer Brush One Styling.. Currently, the typical process for printed circuit board (PCB) processing uses graphic plating. That is, firstly, a layer of lead-tin resist is pre-plated on the portion of the copper foil to be retained on the outer layer of the board, that is, the pattern portion of the circuit, and then the remaining copper foil is chemically etched away, which is called etching The copper which is to remain on the PCB is protected from the etchant by an etch resist. Etching time has to be carefully controlled to ensure only unwanted copper is removed. Over etching can cause undercutting of the resist which can result in serious damage to the edges of tracks and pads

How to make PCB using Photoresist Dry Film - YouTub

  1. What Is PCB Etching. Posted on 28 May 2018. By info@kingsunpcb.com. In PCB knowledge. In printed circuit board manufacturing, printed circuit boards made with Multiwire board and Additive Process technology do not have to be etched. The printed circuit boards made by subtraction process need etching process to form conductive graphics
  2. PnP Wet produces hobby quality prototype PCB resist layouts making your design ready to etch. PnP Wet is a paper backed material with a release emulsion applied. An image is laser printed or photocopied onto the PnP Wet, then applied to the copper board with an iron or heat press
  3. Etch Resist PCB Marker Pen Tutorial We have put this little tutorial together for those who are a little unsure about the ability and quality of the etch resist PCB pen. These pens are of a high quality ink and resist all standard etching chemicals leaving you with just the copper tracks left on your PCB after etching has been completed
  4. Free 2-day shipping. Buy Everpert PCB Photosensitive Dry Film for Circuit Production Photoresist Sheets 30cm at Walmart.co
  5. No! If you're searching for DIY method of solder-masking with photoresist, I can provide you with a little bit of knowledge in same topic. First look at the recently designed PCBs by me below and read further if curious to know more about it. To a..
  6. Buy Etching Chemical for Photoresist Stripping or other Processing Chemicals online from RS for next day delivery on your order plus great service and a great price.

Amazon.com: Photosensitive (30cmx500cm/1ftx16.5ft) PCB ..

  1. Circuit Board etching: Multi Circuit Boards. In the production of printed circuit boards, etching is a central step in the process. This ensures that the excess copper is removed from the printed circuit board. The etching is carried out by means of a strongly alkaline solution. After cleansing the copper surface, a light-sensitive film (resist.
  2. Resist tape is usually neater and permits putting down finer lines, but installing it takes longer. Run it from pad-to-pad, hold down with the knife, and pull against the blade to cut it (right pic): Once you have the pattern defined on copper, the board is ready to etch. Etching The Board Using Ferric Chlorid
  3. um, Brass. From $15.50. View. Anti-sandblasting and anodizing protective ink. From $45. View. Photosensitive anti deep etching ink for roller coating
  4. ates
  5. Buy QIXINSTAR 30cm x 5m PCB Portable Photosensitive Dry Film for Circuit Production Photoresist Sheets Electronic Components online on Amazon.ae at best prices. Fast and free shipping free returns cash on delivery available on eligible purchase
100g Photoresist Anti-etching Blue Ink Paint for DIY PCB

How to make Photoresist PC

After so many chemical processes, the remaining photoresist is completely removed. Step 7 - Etching. PCB etching is the process of chemical removal of unprotected areas of copper. Here the boards are transported through conveyor and jets of etching solutions are used to etch away the exposed copper What is PCB Etching? PCB is an acronym that stands for Printed Circuit Board that helps to connect active & passive electronic components with pads, tracks, and lines incorporated on a laminated copper sheet.A number of stages are involved in proper PCB fabrications which include designing, layout, routing, etching & troubleshooting New 100g Photoresist Anti-etching Blue Ink Paint for DIY PCB Dry Film Replacement Share. VIDEOS 360° VIEW IMAGES New 100g Photoresist Anti-etching Blue Ink Paint for DIY PCB Dry Film Replacement Brand: Generic. 10 Days Returnable Currently unavailable. We don't know when or if this item will be back in stock.. PCB Etching Kits. A range of PCB (printed Circuit Board) etching kits for beginners and advanced users. These kits enable you to create a fully usable printed circuit board using copper clad boards or photo resist copper clad boards Etch Resist (Resistant) Pen - Copper PCB (making 0.5mm fine tip) This pen is a water-proof containing permanent ink which has etch resist properties. A nylon tipped pen for fast fabrication of perfect printed circuit boards. Circuits can be drawn on plain copper laminate and then etched in Ferric Chloride or etchant solutions

AnekaPCB - PCB Prototyping & Electronics

Keluarkan photoresist yang berlebihan dengan membersihkan PCB dengan aseton. 2. Ambil cairan tinning anda dan isikan ke dalam bekas terbuka. 3. Masukkan PCB ke dalamnya dan biarkan di sana selama kira-kira 5 - 10 minit. 4. Ambil PCB daripada penyelesaian dan bilas dengan air paip. 5. Tuang cairan tinning ke dalam botol kaca menggunakan corong Panels on a PCB pass through a vacuum chamber where the layer of positive photoresist is then pressed firmly onto the surface of the foil. The printed circuit pattern is positioned on top of the photoresist and the panels are exposed to an intense UV light. Etching is then undertaken to remove the copper-clad substrate... A typical DIY etching process might look something like this: Start with a clean board of fiberglass (e.g. FR4) plated on one or both sides with copper. Transfer the PCB trace layout to the copper surface with an etch resist or toner. Dip the board into a bath of etching solution to remove the excess copper not protected by the toner Well maintained inner etching lines can etch traces with an accuracy of +0.5 mils in ½ ounce copper and +1.0 mils in one-ounce copper. The Final Steps of Inner Layer Processing Once the pieces of laminate have been etched and the etch resist has been removed, there are three more operations (referenced in the bullets above) that are required.