With preventive maintenance, a bag-style woodworking air filter can be cleaned a half dozen times, greatly extending the life of the bag.
Pitch is usually a problem with cleaning a woodworking air filter bag. Dust Filter Shop’s staff engineer has developed a specialty product that is capable of removing the pitch from the filter bag during the cleaning process. After undergoing cleaning, we test the filters for airflow to assure optimum filter performance after cleaning.
Finishes are confusing to most woodworkers. Plain or unsinged materials are usually supplied by the collector manufacturer. It is not uncommon to see a material that is slightly fuzzy. By switching to a singed or glazed filter bag, you can prevent the particles from sticking to the woodworking filter’s fuzzy material. A singed or glazed finish on a filter bag is created by heating the media with a natural gas flame to burn off the fuzz. Depending on the desired finish, the filter media is fed through rollers prior to flame exposure or afterwards. The filter bags below illustrate the difference between a singed filter and a plain filter for use in woodworking air filtration.
Note: Wood fibers stuck on a filter bag do not affect the breathability of the filter. Both filters air flow tested at the same CFM. Notice the “pilling” on the plain filter. This is similar to an old sweater. The material balls up and wears off. On a wood filter bag a small amount of pilling is acceptable (but, this should be the last time the pilled filter is cleaned).