Dust Collection With no Filters

I did this for awhile in an old shop, worked great until I adding the heating and air conditioning. Then I had to go back to a recirculating system.

-- If I'm not in the shop, I'm someplace else. Joel, Lumberjock #30,000

impressive, but this looks like a lot of duct pipe (lengthwise) for this size of a motor/impeller to handle. are you getting decent DC on your machines?

-- ㊍ When in doubt - There is no doubt - Go the safer route.

PurpLev

No, I’m not getting the suction I need on some machines even using gate valves to shut off machines not in use. I am going to have to reconfigure my set up to cut down on the length of pipe. Also, I thought about mounting the motor up on the wall to reduce the amount of pipe.

-- Emmett, from Georgia

The sharp turns aren’t helping your suction, either. If you’re reconfiguring anyway, consider longer sweeps.

One problem with venting outside (other than losing heated or cooled air) is if you’re using gas heat, you can suck the furnace exhaust into your shop and create a CO2 problem.

-- http://www.peteroxley.com -- http://north40studios.etsy.com --

Also, you need to minimize the amount of flex duct you are using. The airflow resistance of flex hose is on the order of 3 times that of smooth walled ducting! Replacing your sharp 90º ells with two 45’s and a straight piece between them would help your airflow as well.

-- Paul, Auburn, WA

Thanks for all the good ideas. I’ll use them in the improved set up later.
Venting outside is not a problem with CO2 since I use an electric heat pump.

-- Emmett, from Georgia