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  1. #1
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    Mar 2008
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    Default 1.5mm plastic sheeting required

    Hello, my DC uses a hose to connect to my Thien separator and then a 4" ID hose to the bandsaw. I use a PVC female connector on the end of the hose that has 103.5 mm ID. However the OD of the male outlet on the bandsaw is 100mm.

    Can anyone recommend a piece of suitable plastic sheeting 1.5mm thick that can be wrapped around and glued to this 100mm outlet? The outlet is 150mm long, so the size I want is around 320 x 150 x 1.5 which will then be cut to suit. I expect the last 0.5mm be made up with duct tape

    Any ideas and suggestion gratefully received
    regards,

    Dengy

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  3. #2
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    Aug 2008
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    Default

    Why not just build it up with tape the whole way?

  4. #3
    Join Date
    Apr 2009
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    Default

    Myself I'd just wrap duct tape around until suitable thickness was achieved? Otherwise visit one of the $2 shops like the reject shop, shiploads, Kmart and find a plastic material that could be repurposed such as a place mat, food / drink container, shower curtain etc. I'd think something 1.5mm could be found that with a bit of cutting & shunting cold be made to suit. I did consider a offcut of lazerlite or similar roofing.

    Hope I have given you some alterative ideas

  5. #4
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    Jun 2003
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    Default

    Some hobby shops have sheets and strips of styrene in varying thickness. You could glue it on using plumbing or electrical conduit glue or the cleaner which is Methyl Ethyl Ketone (MEK). MEK is used in building model railway wagons from the styrene.
    Tom

    "It's good enough" is low aim

  6. #5
    Join Date
    Feb 2006
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    Perth
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    27,756

    Default

    Why do you need the female PVC coupling? Usually on a BS std 4" flexy easily slides over the male BS ports (it's usually too big) and then (with a bit of effort) a 4" hose clamp can hold the flexy in place.
    If you want a neater fit get some 4"PVC pipe and cut a 100 mm long segment and then remove a vertical segment so that it fits neatly inside the 4" flexy then slide it over the BS port and hose clamp it down.

  7. #6
    Join Date
    May 2011
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    Murray Bridge SA
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    3,339

    Default

    I made a tapered block that does the job after the pipe is heated with a heat gun.
    Kryn

  8. #7
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    Nov 2011
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    Default

    I cut up a 4ltr icecream container and wrapped it around the joint of an elbow and my table saw outlet. Used a couple of large hose clamps and haven't had any problems over the last 3 years or so. A cheap plastic bucket should yield a suitable piece of flexible material.

    Alan...

  9. #8
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    Mar 2008
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    Townsville, Nth Qld
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    Default

    Thanks for your help, everyone. I really appreciated the suggestions and ideas.

    elanjacobs, I am not a fan of duct tape to build up an outside diameter, even if it is only for 1.5mm thickness - eventually it becomes worn and lifts, looks grotty, and not satisfactory, having to be replaced.

    BobL, I have a small shed, and wheel the 2 hp DC outside with the Thien dust separator. I use a 4"hose, ribbed on the outside, smooth inside, industrial strength, about 2m long, running from the Thien to my equipment which are usually wheeled to just inside the roller door of the shed. (Yes, I am aware of your recommendations about 6" minimum hose diameter).

    I merely wanted a plug-in and play arrangement without having to deal with clamps as I switched the hose from machine to machine, and found the best way to do this was with the Tradelink PVC fitting that is normally used to connect PVC plumbing lines to clay pipes. One end takes the clamped 4" hose very snugly, the other end is a standard 110mm OD, 104mm ID PVC connector as used on bends etc which fits on the machinery, in either a male or female mode, depending on the fitting on the machinery. I use the same connector on the Thien separator too. Works well, and is quick to set up and change.

    Uncle Al, I followed your suggestion, went to the green brick place and found they had a cheap heavy duty flexi-bucket with a wall thickness of 1.2mm. Quite strong and quite flexible and easy to cut. Took it home, cut it in a rectangular section using a sharp knife and steel carpenters square. This was then wrapped around the bandsaw male outlet so that the ends butted together exactly, and fitted it with double sided tape.

    Found it to be about 0.25mm too large on the OD to take my PVC female connector. Removed the bucket section, fitted it to a board with DS Tape, and sanded it to the required thickness, also sanding a taper about 1" wide the full length of one edge and refitted to the metal outlet with DS tape. I used a couple of inches of wide duct tape over the butt joint for additional strength until I make it a permanent fitting. Got a perfect airtight fit with the female PVC hose connector sliding nicely over the tapered edge!!!

    Next step is for when I have the Techniglue epoxy out and mixed, to use some to make a permanent bond between the bucket material and the metal outlet.

    Thanks for this great solution
    regards,

    Dengy

  10. #9
    Join Date
    Feb 2006
    Location
    Perth
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    Default

    Quote Originally Posted by Dengue View Post
    Thanks for your help, everyone. I really appreciated the suggestions and ideas.

    elanjacobs, I am not a fan of duct tape to build up an outside diameter, even if it is only for 1.5mm thickness - eventually it becomes worn and lifts, looks grotty, and not satisfactory, having to be replaced.

    BobL, I have a small shed, and wheel the 2 hp DC outside with the Thien dust separator. I use a 4"hose, ribbed on the outside, smooth inside, industrial strength, about 2m long, running from the Thien to my equipment which are usually wheeled to just inside the roller door of the shed. (Yes, I am aware of your recommendations about 6" minimum hose diameter).

    I merely wanted a plug-in and play arrangement without having to deal with clamps as I switched the hose from machine to machine, and found the best way to do this was with the Tradelink PVC fitting that is normally used to connect PVC plumbing lines to clay pipes. One end takes the clamped 4" hose very snugly, the other end is a standard 110mm OD, 104mm ID PVC connector as used on bends etc which fits on the machinery, in either a male or female mode, depending on the fitting on the machinery. I use the same connector on the Thien separator too. Works well, and is quick to set up and change.
    No worries. I now understand. thanks for replying. And good to hear you have a solution.

    BTW I am less worried about the 6" than I am about
    - using a separator on a DC as they can rob ~25% of a small DC air flow. Most folks don't notice a difference because it's not possible to detect a 25% flow loss by feel.
    - having the DC 2m outside the door and the machine just inside the door. What will happen here is the DC creates a low pressure area inside the shed in the vincinty of the machines and the fine dust that bypasses the separator and goes through the DC filter is too close to the door and senses the low pressure area just 2 m away so it will head for the low pressure area inside the shed. If the DC can't be on the outside behind a wall oppose the major opening to the shed you might as well leave it inside the shed. I understand there's probably not much you can do about your situation but as long as you know that this is not doing much to reduce fine dust exposure

  11. #10
    Join Date
    Nov 2011
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    Default A problem solved

    Glad you solved your problem relatively easily, although you missed out on eating 4 litres of icecream.

    Looks like I have helped the big green shed make an even bigger profit.

    Happy woodworking,

    Alan...

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