bdring wrote:Without a high flow rate the smoke swirls around the edges and takes a while to clear. The leaks and gaps help clear it out from the edges. The intent of the slots was to wash air over the surface. It comes down to personal performance preferences. Most people running these for a while tend to like the the bigger centrifugal blowers. They do very well with longer hose runs.
metalman wrote:Dirk, In your situation, you will be running your laser right next to the window that you will be exhausting through. You shouldn't need a exhaust fan or blower with a large static pressure. Though, you might need to run the exhaust through a charcoal filter, if you don't want the neighbors to get a whiff of what your cutting...
The other issue is makeup air. Your apartment is probably pretty tight with respect to air infiltration. For every CFM out you need at least that much makeup air coming in. A partially open window in another room should provide enough.
Jay
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