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  1. #1
    Join Date
    Apr 2012
    Location
    tasmania
    Age
    58
    Posts
    116

    Default On site dust extractor

    Hi Gents
    I'm looking for a dust extractor for site work.
    It will be primarily used for my scms and electric plane, with some use with a circ saw.
    It must be mobile and small enough to transport easily as space is at a premium in the tool trailer and in the ute box.
    I understand that I'm not going to be able to catch all the dust but something's got to be better than nothing.
    Does anyone have any recommendations (good or bad) to help me out.
    Cheers Jim

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  3. #2
    Join Date
    Nov 2011
    Location
    Sutherland Shire, Sydney
    Age
    71
    Posts
    1,301

    Default Jim has one

    Young Jim at Carroll's Woodturning has this extractor which should be close to your requirements -

    http://www.cwsonline.com.au/shop/ite...dust-extractor

    I have seen a similar one used at a WWWS demo, and it was remarkably quiet.

    Alan...

  4. #3
    Join Date
    May 2013
    Location
    Somerset Region, Qld, AU.
    Age
    66
    Posts
    602

    Default

    Quote Originally Posted by jimfish View Post
    Hi Gents
    I'm looking for a dust extractor for site work.
    It will be primarily used for my scms and electric plane, with some use with a circ saw.
    It must be mobile and small enough to transport easily as space is at a premium in the tool trailer and in the ute box.
    I understand that I'm not going to be able to catch all the dust but something's got to be better than nothing.
    Does anyone have any recommendations (good or bad) to help me out.
    Cheers Jim
    Jim,

    There are two items that I've tried with varying degrees of success. One is a vacuum branded "Shopvac". I think Masters are the main retailer of that brand in Australia (https://www.masters.com.au/product/1...ry-vacuum-grey). The 1800 watt unit has plenty of suck and does alright capturing dust from a Random Orbit Sander and from an elect plane. My Circ Saw doesn't have a dust extraction fitting, and I don't have a sliding cross-cut mitre saw, so I can't speak from personal experience with those specific tools. I can say that the Shopvac wasn't real effective when hooked up to the dust collection ports on my routers. Unfortunately, the Shopvac burnt out after about a year's use (I'm a three or four day a week hobbist, not a pro). The Shopvac does not come with a set of adaptors to connect the hose to the different sized dust collection fittings on various power tools - and the hose supplied with the Shopvac is too short. I bought extra hose from Godfreys, and two different sets of plastic hose adaptors - one from Hare & Forbes and another from Bunnings.

    I needed a replacement for the burnt-out Shopvac in a hurry, so got a cheap Ozito 1,100 watt Workshop Vacuum. Ozito seem to have dropped this item from their range since I bought mine, but this Scheppach HA-1000 Dust Collector looks almost identical, and has the same specs. The Ozito came with a short 1.5 meter 100 mm dust collector host and a set of adaptors for smaller hoses. The 100 mm hose is not much use for directly connecting to hand-held power tools, so I use a step-down adaptor to connect a four meter length of 63 mm (2 1/2") dust collector hose (from Machinery House) and then adaptors to go down to the connection on each power tool. The Ozito pulls a heap of vacuum (e.g. if you block the end of the 100 mm hose with your hand the suction will halve the length of the 100 mm hose). When hooked up to the 2 1/2" hose and a typical adaptor for a power tool, the vacuum motor bogs down some, but air flow at the open adaptor is still plenty to clear the dust and chips from all my power tools, including the routers.

    To prevent the motor from overheating due to being bogged down, I made a few 12 mm holes in the side of the 100 mm to 63 mm adaptor. I drilled just enough breather holes to allow enough extra air in so that the motor sounds like it's running at top speed - I think that the suction at the power tool remain unchanged and is still plenty sufficient to clear the dust and chips. Without the breather holes, the 63 mm hose would bunch up under suction - with the breather holes, the 63 mm hose doesn't bunch up and remains flexible. The 63 mm hose is a bit heavy to have hanging off the end of a power tool - if you can get it, some 50 mm hose might be lighter on the tool. I use a couple of elastic velcro straps to strap the hose onto each tool's power cord so that the hose adaptors do not pull out of the power tool.

    As another alternative, if you've got wads of money to spend, have a look at the Festool dust extraction units (http://www.carbatec.com.au/festool-d...ssories_c20204). A friend of mine has one and it is an excellent tool, and much quieter than either the Shopvac or the Ozito. And there are enough different adaptors available to allow you to connect to plenty of different brands of power tools other than Festool. Unfortunately, the Festool units are out of this pensioner's price range, but they might suit you.

    Hope that info helps.

    Regards,

    Roy
    Manufacturer of the Finest Quality Off-Cuts.

  5. #4
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    27,756

    Default

    What are you mainly concerned about, wood chips, or fine dust that can affect your health, or both?
    Also what do you mean by site? New buildings or occupied buildings?

    The 3 tools you refer to are notoriously difficult to contain chips and even harder to contain fine dust.

    The dust extractor referred to by Uncle Al would be one of my last choices for dust collecting.
    Of all the DCs I have tested these types of DCs would have to be the poorest overall performers.
    When empty and with a clean filter, the claimed flow rates are overstated by about a factor of two which makes them no better than a vacuum cleaner in terms of air flow, and the filters bags are inefficient at filtering out fine dust.
    The dust bag is too small so it fills rapidly and because the same bag acts as the filter a collection bag the bag rapidly clogs up and the flow rate drops even further.

    If you really want to contain chips from these tools then you might also need to change the tool.
    e.g. Festool plunge saws have above average dust collection compared to other saws when connected to their vacuum cleaners - but they are still far from perfect.
    Does the planer have a dust extraction port? If so a vacuum cleaner will do a better job at picking up the chips than a dust collector
    SMCSs spray the chips far and wide unless a large shroud/canopy is employed behind the saw so there's not much you can do with this one unless you are prepared to tote a shroud/canopy around with you. Maybe you could rig up a collapsible frame with a flexible outer skin that would at least constrain the chips to a smaller area than would otherwise be the case.

    Shop vacs are cheap and moderately effective art chip collection but they are amongst the worst at fine dust control and eventually they can make more very fine dust than they collect. They do this by mincing coarse dust into fine and finer dust which they cannot filter out efficiently or worst still (especially vacs that are toted around by tradies) start to leak like a sieve.

    Fine dust is a different critter and it has been well established site woodworkers (especially those working inside buildings) are exposed to the greatest amount of fine dust than any other woodworkers. Unless you tote a 3HP DC around with you there is no chance of collecting any more than a few percent of the fine dust that is made while using these tools.

    Ab alternative to fine dust collection would be to improve ventilation, so using something like an constricted axial flow fan like this might be the way to go
    http://www.machineryhouse.com.au/F050
    It is important to fit a length of air con type ducting to the hose so the dust can be directed away from a work place.
    Even better is if you can hang the hose our of a window.
    Obviously you will need long lengths of ducting if you are deep inside an occupied commercial or residential building and even then the neighbours and building occupiers may not appreciate a stream of dust coming out a window all day.
    Inside the building the ducting can get in other peoples way so this may not be able to be used all the time.

    If you can use a ventilation fan, you could attached a hose to power tools that have built in fans and locate the outlet of that hose in front of the working ventilation fan. I have done this when using a belt sander and it works very well.

    If its your health you are worried about, as well as other measures I would also consider using a full face mask.

  6. #5
    Join Date
    Nov 2010
    Location
    Perth W.A
    Posts
    720

    Default

    Definitely would agree with the Festool Recommendation, thay are very quiet and work perfectly when used in conjunction with their plunge saw and sanders and other tools.Plug tools directly into the units and the vacuum starts up and shuts down automatically.

    I was lucky enought to pick one up with a load of other Festool gear at auction a couple of years ago and cant fault any of it.

    Dust extraction is rather hit and miss with SCMS's in my opinion and they seem to defy all attempts to have effective dust extraction .The dust bags supplied with some of them are next to useless and even when used with a shop vac only collects some of the dust.

    Quote Originally Posted by AussieRoy View Post
    Jim,

    There are two items that I've tried with varying degrees of success. One is a vacuum branded "Shopvac". I think Masters are the main retailer of that brand in Australia (https://www.masters.com.au/product/1...ry-vacuum-grey). The 1800 watt unit has plenty of suck and does alright capturing dust from a Random Orbit Sander and from an elect plane. My Circ Saw doesn't have a dust extraction fitting, and I don't have a sliding cross-cut mitre saw, so I can't speak from personal experience with those specific tools. I can say that the Shopvac wasn't real effective when hooked up to the dust collection ports on my routers. Unfortunately, the Shopvac burnt out after about a year's use (I'm a three or four day a week hobbist, not a pro). The Shopvac does not come with a set of adaptors to connect the hose to the different sized dust collection fittings on various power tools - and the hose supplied with the Shopvac is too short. I bought extra hose from Godfreys, and two different sets of plastic hose adaptors - one from Hare & Forbes and another from Bunnings.

    I needed a replacement for the burnt-out Shopvac in a hurry, so got a cheap Ozito 1,100 watt Workshop Vacuum. Ozito seem to have dropped this item from their range since I bought mine, but this Scheppach HA-1000 Dust Collector looks almost identical, and has the same specs. The Ozito came with a short 1.5 meter 100 mm dust collector host and a set of adaptors for smaller hoses. The 100 mm hose is not much use for directly connecting to hand-held power tools, so I use a step-down adaptor to connect a four meter length of 63 mm (2 1/2") dust collector hose (from Machinery House) and then adaptors to go down to the connection on each power tool. The Ozito pulls a heap of vacuum (e.g. if you block the end of the 100 mm hose with your hand the suction will halve the length of the 100 mm hose). When hooked up to the 2 1/2" hose and a typical adaptor for a power tool, the vacuum motor bogs down some, but air flow at the open adaptor is still plenty to clear the dust and chips from all my power tools, including the routers.

    To prevent the motor from overheating due to being bogged down, I made a few 12 mm holes in the side of the 100 mm to 63 mm adaptor. I drilled just enough breather holes to allow enough extra air in so that the motor sounds like it's running at top speed - I think that the suction at the power tool remain unchanged and is still plenty sufficient to clear the dust and chips. Without the breather holes, the 63 mm hose would bunch up under suction - with the breather holes, the 63 mm hose doesn't bunch up and remains flexible. The 63 mm hose is a bit heavy to have hanging off the end of a power tool - if you can get it, some 50 mm hose might be lighter on the tool. I use a couple of elastic velcro straps to strap the hose onto each tool's power cord so that the hose adaptors do not pull out of the power tool.

    As another alternative, if you've got wads of money to spend, have a look at the Festool dust extraction units (http://www.carbatec.com.au/festool-d...ssories_c20204). A friend of mine has one and it is an excellent tool, and much quieter than either the Shopvac or the Ozito. And there are enough different adaptors available to allow you to connect to plenty of different brands of power tools other than Festool. Unfortunately, the Festool units are out of this pensioner's price range, but they might suit you.

    Hope that info helps.

    Regards,

    Roy

  7. #6
    Join Date
    Apr 2012
    Location
    tasmania
    Age
    58
    Posts
    116

    Default

    Thanks for the input guys .
    I'm a sub contract chippy working in the residential new home sector in Tassie.Unfortunately a track saw is next to useless for me as I'm mainly cutting door jambs,architraves and skirtings so I'm stuck with the mitre saw.
    Bob I suppose I'm really just trying to provide a safer workplace for me and my apprentices. I think I may have to use a combination of a shop vac and extraction fan to improve our working environment .
    Whilst not a Festool devotee as I think they are priced way over the odds the consensus seems to be they are very good so ill definitely take it into consideration . Thanks again for the input.
    Cheers Jim


    Sent from my iPad using Tapatalk

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