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Using Computer Aided Design (CAD) tooling is generally produced from customers' own drawings and specifications Customers may also supply their own designs via post, modem or the Internet. Most software protocol can be interpreted. Files are transferred to a photo plotter, where the image is accurately reproduced onto film and a 'Photomaster' produced. This Photomaster can be quickly and cost effectively replaced if modifications are required or 'wear and tear' has taken place. The PCM ProcessA cleaned metal 'blank' is coated with a light-sensitive photoresist and exposed to ultra violet light, which hardens the resist. Unexposed areas are developed away, leaving bare metal which is sprayed with etching solution on both sides, at high pressure. This accurately removes the unwanted metal and the resist is removed to leave behind burr and stress free components. PCM Tolerances Illustrations shown are for reference only. Tolerances are dependent on the metal chosen and may be more or less than those shown. Use this guide as an indication of what can be achieved, bearing in mind that the tolerances obtainable are dependent on blank size, material type and whether components are tagged into sheets or loose. Precision: achievable when blank sizes are less than 40 x 40cm Precision Plus: achievable for blank sizes of 30 x 15cm and below Tolerances can be adjusted to allow for plating finishes..photo chemical machinning proces pcm tooling photo chemical machinning proces pcm tooling
Using Computer Aided Design (CAD) tooling is generally produced from customers' own drawings and specifications Cu tomers may also supply their own designs via post, modem or the Internet. Most software protocol can be interpreted. Files are transferred to a photo plotter, where the image is accurately reproduced onto film and a 'Photomaster' produced. This Photomaster can be quickly and cost effectively replaced if modifications are required or 'wear and tear' has taken place. The PCM ProcessA cleaned metal 'blank' is coated with a light-sensitive photoresist and exposed to ultra violet light, which hardens the resist. Unexposed areas are developed away, leaving bare metal which is sprayed with etching solution on both sides, at high pressure. This accurately removes the unwanted metal and the resist is removed to leave behind burr and stress free components. PCM Tolerances Illustrations shown are for reference only. Tolerances are dependent on the metal chosen and may be more or less than those shown. Use this guide as an indication of what can be achieved, bearing in mind that the tolerances obtainable are dependent on blank size, material type and whether components are tagged into sheets or loose. Precision: achievable when blank sizes are less than 40 x 40cm Precision Plus: achievable for blank sizes of 30 x 15cm and below Tolerances can be adjusted to allow for plating finishes.
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