Due to the use of granular media spin spinning fins of the target (target to Burri) not a fin adjacent to the workpiece. So the media through the grain use will scrap fins of the workpiece. And dust from spinning broken of granular media change, SizeGranular media is not smart, wet back immediately used to process dried, baked and granule filter media, granular media not to use. The cost of buying the granular media is higher.
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