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  1. Replies
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    I’m with Steve on this. After we work all the...

    I’m with Steve on this. After we work all the numbers, add in for heat generated by our tools and compensate for the dust collection basically creating a circle of air, the bottom line is there is...
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    67,516

    Eric, My recommendations: Budget & Once in...

    Eric,

    My recommendations:

    Budget & Once in a While Woodworkers:
    (Except those who work indoors or in basements).
    Buy and use a good 3M 7500 dual cartridge mask fit to your size face. If you...
  3. Replies
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    67,516

    Tim, The first portable shop vacuum cyclones...

    Tim,

    The first portable shop vacuum cyclones started appearing on people's web pages back in the early nineties, so OAS by no means pioneered these units. Jim Halbert shared a fairly nice design...
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    8,181

    Two of the cyclones I tested a year ago had...

    Two of the cyclones I tested a year ago had vendor supplied dust bin full sensors, but the cartons those sensors came in said Dwyer and had standard Dwyer part numbers, but cost a lot more than Dwyer...
  5. Thread: DC Question

    by Bill Pentz
    Replies
    5
    Views
    1,099

    Jason, Lots of people really don’t understand...

    Jason,

    Lots of people really don’t understand airflow very well. The amount of air that your blower is going to move depends upon how much resistance it must overcome. Blower technology is fairly...
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    I hear this concern about venting outside too...

    I hear this concern about venting outside too much. It is not nearly as big of an issue as most think. Rob is on top of why.

    A 25'x25'x6' room has 6260 cubic feet of area. Removing one cubic foot...
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    6,320

    Although logic would have you thinking that if...

    Although logic would have you thinking that if you exhausted half your shop air every eight to ten minutes, you would have the temperature drop quickly the reality is similar to air cleaners. They...
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    Dust Bin Sensor

    My friend Sugi is a Japanese engineer who was kind enough to design a low cost dust bin sensor that you can build yourself. If you like the sensors that other small shop vendors carry, take a serious...
  9. Replies
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    67,516

    Bill J, Will, Walt & Rick, Thanks for your...

    Bill J, Will, Walt & Rick, Thanks for your positive comments.

    Walt,

    Dust collection studies are a mess. There is really big money involved, plus a huge liability issue. There were peer reviewed...
  10. Replies
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    The 28 guage spiral pipe and even 30 gauge...

    The 28 guage spiral pipe and even 30 gauge fittings are fine for small shop applications. As Chris Del shared the way spiral pipe is made ends up with even the lighter gauges working just fine. I...
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    67,516

    Will, On my Doc's Order's pages you will see...

    Will,

    On my Doc's Order's pages you will see I am not a big fan of powered respirators. I really disliked rushing projects because my powered respirator batteries kept dying. Although we have...
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    Gary, I own one of the RBI scroll saws and it...

    Gary,

    I own one of the RBI scroll saws and it has served me well for nearly fifteen years as it is a very well built machine. When I bought it the DeWalt was not yet available and I wanted far...
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    67,516

    Hank,

    Hank,
  14. Replies
    119
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    67,516

    Tim, You appear to be echoing comments that...

    Tim,

    You appear to be echoing comments that are neither accurate nor appreciated.


    bill
    [/COLOR]
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    Personal I’m a retired biomedical engineer and...

    Personal
    I’m a retired biomedical engineer and university engineering instructor who was blindsided by the “best” magazine rated cyclone system and vendor designed ducting. In spite of what you may...
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    5,581

    Yes. That would work. I suggest you use a good...

    Yes. That would work. I suggest you use a good quality metal gate with the screw to hold the gate open to a consistent size.
  17. Thread: Band Saw DC

    by Bill Pentz
    Replies
    20
    Views
    7,904

    Sean, The brush will work if the wood is dry,...

    Sean,

    The brush will work if the wood is dry, but the wetter and more sap filled the more will clog in the brush and get to your band saw tires. I cut very little green wood, but I suspect there...
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    John, Use an amp meter and ensure that the...

    John,

    Use an amp meter and ensure that the amps do not go over the motor capacity. If they do, use a blast gate in front of the cyclone and with your most open air configuration, slowly close that...
  19. Thread: Band Saw DC

    by Bill Pentz
    Replies
    20
    Views
    7,904

    Air at typical dust collection pressures is more...

    Air at typical dust collection pressures is more like water and will barely compress at all. Any small pipe, duct or port kills our needed airflow. The standard 1.25” port that comes with the Delta...
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    5,581

    Exhausting Cyclone Outside

    John,

    Do you guys know if a cyclone is made louder or quieter by ducting outside? The noise inside your shop will be less as most of the cyclone noise is created by the blower and is transmitted...
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    16,317

    Doug, One of the guys who says he works with...

    Doug,

    One of the guys who says he works with this larger pipe all the time seals the ends. He says the heat generates enough pressure inside that it keeps the pipe from getting kinks unless you...
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    15,152

    Bill, You are most welcome. I again put my two...

    Bill,

    You are most welcome. I again put my two cents below in blue.

    bill
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    Bill, I slipped my answers into your questions...

    Bill,

    I slipped my answers into your questions in blue, plus added some background after. Hope this helps.

    bill



    Bill,
  24. Replies
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    Tim, Although some would like you to think I...

    Tim,

    Although some would like you to think I am a vendor, I am not nor do I own, work for, or in any other way represent and of the firms that make or sell dust collectors or cyclones. After...
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    Sending the air outside

    In 1999 even after seeing my allergy tests I had a hard time believing my doctors when they blamed my woodworking hobby for nearly killing me. After reading all the available small shop dust...
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