Dust collector bag porosity

I'm about to order replacement bags for my new 30-mike collector (I decided against the canister). What are your opinions about the benefits of 5-mike vs. 1-mike bags? Are the finer porosity bags worth the double price?
Thanks
Bill
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If they ease your mind, certainly. Two factors, often discussed, are mesh size - filtration at the primal level, which changes as dust and such is captured, effectively diminishing the mesh size, and trapping, where the material is something like felt, offering a multitude of paths, effectively lowering the velocity in any, allowing the dust to become trapped in a backwater.
You'll leak more dust from fittings than you'll push through a bag once the dust has reduced the mesh size.

decided
5-mike
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wrote:

Don't believe everything they claim. a cloth bag needs to be pretty big to get the fine dust. airflow has to be high and the bag kept clean. so this is the place to go http://www.americanfabricfilter.com/ and get as big of a bag as you have room for. shake it every day.
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