Awards & Engraving

June '19

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A&E JUNE 2019 • 13 filter case, which can be a convenience, would be wasteful and more costly given that you would be forced to throw away a perfectly good HEPA filter along with the spent gas filter. If you are cutting a lot of wood, favor a machine that has large prefilters in terms of surface area. Wood generates much more dust than gas: 90% dust versus 10% gas. In this case, favor a system that has a large prefilter in terms of surface area. Also look for machines that have rigid metal filters with good seals between them. Under heavy dust load and high pressure from the vacuum blowers, filters encased in flexible materials, such as thin cardboard, may warp and leak around the seals. The dust bypass through the leaks leads to premature consumption of HEPA and gas filters. Processing metals such as anodized aluminum creates much less dust and gas load. You can favor a machine that is more compact but still satisfies the airflow requirements of the application. THE FINAL DECISION To arrive at your final decision, you should map out your business with respect to its culture regarding air pollution, its production volume, materials that will be processed, laser size, and whether or not you anticipate growth in terms of future purchases of more laser systems. Contact a fume extraction manufacturer and share your business vision with them. Together, you will be able to choose the best fume extraction system for your specific business needs and goals. The selection of a fume extractor can be optimized for specific materials such as wood. IMAGE COURTESY TROTEC A&E

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