Hi Zax,
Thanks for the reply. The machine I have has a damper that allows you to select if you are pulling from above, below or from both areas. When I am cutting I place solid sheets of material on the table so that the smoke is trapped below and I set the exhaust to only pull from below.
If I am cutting acrylic I can see the smoke wafting around and not getting pulled back towards the exhaust like other people who have the same machine. There is a ton of intake louvers at the front of the machine so it can suck all the fresh air it wants.
When I engrave I have the machine pull from the top only and the smoke hangs around and is slowly migrated to the vent. Eventually the smoke clears into the exhaust and the cutting room remains smoke free so it is at least preventing the smoke from escaping.
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