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  1. #1
    Join Date
    Nov 2012
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    Mid North Coast NSW
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    Default dust extractor plans

    I'm looking at building my own dust extractor for a T-13A thicknesser.
    Has anyone seen any suitable plans ?

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  3. #2
    Join Date
    Feb 2006
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    Perth
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    Default

    Depends how serious you are and the extent you wish to control fine dust.

    Amongst the best designs are this one
    http://billpentz.com/woodworking/cyc...clone_plan.cfm

  4. #3
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    Nov 2012
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    Default

    Quote Originally Posted by BobL View Post
    Depends how serious you are and the extent you wish to control fine dust.

    Amongst the best designs are this one
    http://billpentz.com/woodworking/cyc...clone_plan.cfm
    Thanks but I think that's a bit more than I need.
    I will prob only use my thicknesser a couple of hours per year.

  5. #4
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    Mid North Coast NSW
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    Default

    So would this be a suitable extractor for use with a T-13A thicknesser ???

    http://www.machineryhouse.com.au/W886

  6. #5
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    Feb 2006
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    Perth
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    Default

    That DC won't even collect the chips let alone the fine dust.

    If you want to collect chips, any DC that uses 4" ducting will struggle., even a 2HP will struggle unless it is modified to use 6" ducting such as shown in this thread https://www.woodworkforums.com/f200/generic-2hp-dc-171247

    If you want to collect chips and some fine dust the minimum would be the modified 2HP DC.

    If you want to control fine dust then a 3HP DC is the minimum that should be used.

    The DC should also be located outside the shed or at least enclosed inside an air tight cupboard inside the shed and vented outside the shed.

  7. #6
    Join Date
    Dec 2004
    Location
    Northen Rivers NSW
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    2,837

    Default

    Hi mate

    This is what I achieved with a carbatec 2hp jobbie;

    https://www.woodworkforums.com/es/arc...p/t-30402.html

    Horses for courses and one system that works will not be great for another.

    In my current shop (small single garage size) I have two 1hp dust extractors that are mounted with the machine they extract for. So the TS has one that is under the table. The secret (IMO) if you are using small hp extractors is to have virtually no pipework. Just enough to connect the unit to the machine. On my leguna TS the pipe is 6" long .

    If yours is only for one machine I think you will be fine with that 2hp if you do it this way.

    Have fun.


  8. #7
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    Feb 2006
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    Perth
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    Quote Originally Posted by dazzler View Post
    Hi mate

    This is what I achieved with a carbatec 2hp jobbie;

    https://www.woodworkforums.com/es/arc...p/t-30402.html
    Things have moved on quite a bit since you posted that thread and we now know a lot more about DCs, air flow and ducting.
    In that thread you state the 2HP has a 1700 CFM flow.
    The manufacturers spec is 1200 CFM which is too high by about a factor of two.

    I have measured the flow rates of about half a dozen of these 2HP units and the best they can do using both 4" intakes is less than 600 CFM and this is before any machinery or ducting is added to the DC..
    We also know that as soon as chip collectors are added the flow rate will further decrease by as much as 40% - they may seem like they suck but that's it they really don't.
    They're great to collect chips but the reduced air flow rate does not collect enough fine dust.

    A single 4" duct can only draw ~400 CFM when connected to standard DCs which is considered to be a factor of 2.5 times too little to control fine dust in a workshop.
    Connecting additional 4" ducts to a small DC - especially in the way the generic 2HP does it does not result in 2 x 400 CFM it barely makes it to 600 CFM.
    To achieve the recommended flow rates to control fine dust with conventional DCs the use of 6" ducting is essential.
    The only way a 2HP can make use of 6" ducting is if it is substantial modified especially to improve the flow between the impeller and the bags.

  9. #8
    Join Date
    Aug 2010
    Location
    Horsham Victoria
    Posts
    5,713

    Default

    Quote Originally Posted by BobL View Post
    Depends how serious you are and the extent you wish to control fine dust.

    Amongst the best designs are this one
    http://billpentz.com/woodworking/cyc...clone_plan.cfm
    Bob i tried to follow this link on my phone but the site did not auto size to pbone screen and i cannot zoom across to aeeing the missing text.

    Not sure if you know anyway for me to get around this on a ohone

    Dave TTC
    Turning Wood Into Art

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