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  1. #1
    Join Date
    Mar 2006
    Location
    Newcastle
    Posts
    120

    Default Run ducting - high or low ...

    HI All,

    I am a beginner on my Dust extraction Journey. My first post has guided me to the point where I now have a 2HP collector and a plan to house it out the back of my workshop. Here is the post.

    I am now finalising the plans for how to run the ducting from outside the workshop to my tools. I am going to try and keep the system with only one (or max two) attachment points in the workshop. All with blast gates.

    Ceiling or floor runs?

    I would prefer to have the ducting coming down from the ceiling to keep hose out of the way but I believe it will add an extra 5 metres to the length of ducting. It will need to travel from ground level up the wall along the ceiling then back down. If I have the ducting at ground level, it will remove the need to go up and down. In this scenario the total length of ducting from the DC to the tools will be about 3 metres.

    Will it make a difference?

    From what I have read the extra 5m length will significantly reduce the air movement. Is that right? Or is it a case of a small difference that may not be be relevant when using it for only one tool at a time.

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  3. #2
    Join Date
    Jul 2011
    Location
    In between houses
    Posts
    1,784

    Default

    Put it up, the supposed difference in suction will be nothing compared to the frustration of tripping and stepping over the pipework all the time.

  4. #3
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    27,756

    Default

    While it would be best to keep the ducting runs at short as possible it will make less difference if its 6" ducting.

    If you have the ducting down low does that mean it will cross access ways?
    If so I reckon the safety risk of ducting across an access way should not be underestimate

  5. #4
    Join Date
    Mar 2006
    Location
    Newcastle
    Posts
    120

    Default

    Thanks all for your feedback. It has helped.

    My current plan is now looking like this.

    1. I will route a short 1m run of ducting to near the back door at floor level. I often use the Table saw (on wheels) here so can use that whenever possible. It won't cross the entry to reduce tripping.

    2. I will also run a secondary duct - 150mm PVC DWV - up the wall and along the rafters to where I run my mitre saw, track saw, drill press and table saw on occasion.

    3. Some lengths of flexible 100mm will be used near the tools and some 35mm to the Mitre saw etc.

    What I now need to investigate is:

    Can I run both ducts (1&2) from the machine itself. This way I can run the long length on the outside of the workshop. It would mean 1 x 6" (150mm) piece and a 4" (100mm) running off the DC itself. Or is it better to run one length of 6" and put a Y junction in the workshop? I'm investigating this now in the FAQ's - I'm sure the answer is in there!

  6. #5
    Join Date
    Sep 2009
    Location
    Newcastle
    Posts
    549

    Default

    I inverted my dust collector which put the intake up near the ceiling and thus saved two elbows and a 2m vertical run

    The filters/metal ring diverter/dust bag stay in usual orientation. Motor and impella are up near ceiling rather than down near floor.

  7. #6
    Join Date
    Apr 2007
    Location
    Adelaide Hills, South Australia
    Posts
    4,311

    Default

    Quote Originally Posted by pippin88 View Post
    I inverted my dust collector which put the intake up near the ceiling and thus saved two elbows and a 2m vertical run
    And, if you ever add a cyclone to your system your inlet is going to be up there near the ceiling.

    CV1800 | Clearvueoz.com.au
    Stay sharp and stay safe!

    Neil



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