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Sign Industries Ltd
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Professional Engraver & Signmaker
Professional Engraver & Signmaker

3 followers
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THE PROCESS OF ETCHING. First we cut your metal, we have a fairly large guillotine for cutting normal squares etc, if we need an odd shape we send it to a laser or water jet cutter to get that done so any shape is possible! We then cover the back of the metal with vinyl and make a mask with the pictures or legend on it, this is placed on the front of the metal which has been polished and finished by the supplier where the letters and images are then picked out, any part of the sheet which has not been masked will etch. It is then placed on runners to go through the plant, we use ferric chloride to etch, which is a salt although the process is called acid etching there is no acid involved. The metal usually has two passes to get the depth needed but that can depend on the material, Stainless Steel is harder than Bronze so it takes a little more time. By etching, it means we can cover a bigger area with more text, mechanical engraving on to Stainless Steel is very time consuming and much more expensive. It then gets cleaned and with the mask still on, progresses to the paint shed. We use a 2 pack car paint to give longevity. We can do as many paint colours as you like but they all have to be done separately and we must have a thin divide of metal between the colours or they’ll mix together, it is only then that the vinyl is removed, the last job is polishing and packing, for delivery we use a carrier who gives us next day delivery to most parts of Great Britain
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3/17/18
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