PCB Portable Photosensitive Dry Coating For Photoresist Circuits 1m/2m/5mFeature:1.5 millimeter thickness dry coating can completely cover 0.25 inch holeDry film can be used in the most ordinary electroplating solution, no wrinkles, no discolorationOperation steps:1, CCL grinding, it's simple, using the best polished matte paper for water cleaning on the line2, film removal, the photographic film is placed between two layers of film, the first side can use transparent torn tape, try a few on the line3, and then the film, copper clad laminates can look a little cleaner, pasted, try not to have bubbles.4, good paste membrane used presses, not too hot, about 100 degrees from fixing.5, circuit board film, the suggestion is to use film, fine can reach the highest degree of accuracy, if you did not ask for paper, to print it with travel sulfuric acid.6, the printed circuit on the photo plate (note: the dry coating is negative to highlight the print, we usually use the photo plate opposite) with ordinary energy-saving lamps 10 or more, if there is no machine exposure 1 minute on the line, the sun has not tried, It should be 30 seconds-60 seconds, of course, the exposure process, because the photosensitive film will change color when exposed to light, The light becomes dark blue. You can easily see your circuit diagram appeared on the board.7, develop and tear the protective film on the front panel, to the developer (developer according to 1:100.10 grams total 1L of water) to be used when developing a slightly harder cotton wiping plate.8, etching, it is obvious (iron chloride etchant environment for protection, hydrochloric acid + hydrogen peroxide, etc.) is recommended store etching environment, quick, clean, no smell.9, after good CCL etching, peeling, from the film watered for 1:60 or 70, bubble board like a few minutes10, after the board is finished, very good, the most dense line spacing is 0.1mm, width 0.1mm, 0.1mm lines, however, know that it is very easy to do, but up to 0.1 lines and 0.1 line spacing, dry coating can easily do itSpecifications: Material: Organic ResinWidth: 30cmLength: 1m/2m/5mQuantity: 1 RollNote:1. Transition: 1cm=10mm=0.39 inch2. Please allow 0-3cm error due to manual measurement. Pls make sure you don't mind before you bid.3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 1 Roll x Photosensitive Dry Film