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  1. Replies
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    A 17.7 inch impeller will do anything you want...

    A 17.7 inch impeller will do anything you want and will support 3 x 150mm blast gates being open at the same time. We always use 225mm pipe for a main duct and drop 150mm down to the machines which...
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    Use the machine and don't touch anything and you...

    Use the machine and don't touch anything and you might be surprised. Adjusting the table height is not just a simple exercise of screwing the height bolts up and down, the table in reality pivots...
  3. It still does not supply any useful information...

    It still does not supply any useful information but yes I know this is how we have expressed DE sizing in the past and my remarks above on impeller sizing explain why HP means very little. We have...
  4. A cyclone works because it is inefficient and...

    A cyclone works because it is inefficient and slows the air flow down. I note the blower the OP has is 3 phase which is a plus, use a VFD to control it and you the motor speed can be controlled up or...
  5. How big was the impeller in the 2HP because...

    How big was the impeller in the 2HP because without knowing that your information does not help much unfortunately. I know I sound like a broken record but comparisons of this type don't help much.
  6. Health issues are important as anyone older will...

    Health issues are important as anyone older will tell you and the one health issue often forgotten in production work in the long term is dust control. Fixed machines will enable far better dust...
  7. Thanks Matt. I was the Australian agent for...

    Thanks Matt. I was the Australian agent for Clearvue and introduced the product to Oz with success but the current agent has been forced to stop importing due to transport costs. We are now finding...
  8. A comment and a question, if the cyclone is...

    A comment and a question, if the cyclone is exhausting to atmosphere then I have found a typical Grizzly style short cone works as well as a long cone and the exhaust debris are not noticeable.
    ...
  9. With no disrespect to Matt his post illustrates...

    With no disrespect to Matt his post illustrates my point regarding how we look at sizing dust extractors. In the great big scheme of things 1-1/2HP tells us very little about the flow capacity...
  10. As long as the HP is adequate to turn the...

    As long as the HP is adequate to turn the impeller at full speed the HP is not the important factor, the impeller size is. If a 13" impeller is driven by a 3HP motor or a 5HP motor both at full speed...
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    FPS is a mistake, it should be CFM.

    FPS is a mistake, it should be CFM.
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    1000 fps is the delta that Bill Pentz arrived at...

    1000 fps is the delta that Bill Pentz arrived at and it has become the default number that is aimed. Actually my statement on 6" is what we use in Oz because 7" is not available here in any shape or...
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    1000 FPS is easy to get, use 6" duct and ports on...

    1000 FPS is easy to get, use 6" duct and ports on the machine and a 15" impeller at 60hz/3450RPM and the job is done. No magic is involved, it simply works.
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    Thanks for the feedback and your experience in...

    Thanks for the feedback and your experience in related fields. BobL who does all the research on that forum is a physics professor who designed and built world leading clean rooms so he understands...
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    The Australian Woodworking forum has a lot of...

    The Australian Woodworking forum has a lot of information and well researched data on measuring air flow and it is the only place I know of that has good data that can be trusted done by someone who...
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    On a closed cabinet like a bandsaw it is all...

    On a closed cabinet like a bandsaw it is all about making sure there is an additional port allowing replacement air in at the same rate as the extracted air.
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    I should clarify what I wrote above, when I say 3...

    I should clarify what I wrote above, when I say 3 phase I am saying that a three phase motor is used by utilising a VFD from a single phase power supply. I was able to introduce Clearvue Cyclones to...
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    Yes, but the option is still there using any...

    Yes, but the option is still there using any three phase DE. If Oneida were really serious they would not sell single phase machines at all as they clearly have internal VFD's that does the job. I...
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    That can be done automatically with a VFD if it...

    That can be done automatically with a VFD if it is programmed correctly. I did a commercial installation where the system did exactly that but don't ask me how the programming was done because I...
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    Any 3 phase dust extractor with a VFD will do...

    Any 3 phase dust extractor with a VFD will do exactly the same thing including Cleavue. Personally I would not buy a single phase dust extractor if you gave me the money and I can't understand why...
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    That doc does not appear to be for the current A3...

    That doc does not appear to be for the current A3 series of machine.
  22. About two minutes.

    About two minutes.
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    Everyone has their own individual take on our...

    Everyone has their own individual take on our approach to working but I think most of us tend to over complicate things and be to clever for our own good. When I started out using the F&F jig it was...
  24. Here are the pics of how I can set up a parallel...

    Here are the pics of how I can set up a parallel guide using two fences and a length of aluminium extrusion. It can have a low or high position which could be an advantage as well.

    This is in the...
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    The problem with that is I can't see how it helps...

    The problem with that is I can't see how it helps to have a measurement system on the F&F jig if the rip fence is used as a stop and my rip fence has a Wixey on it with a fine adjuster on the rip...
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