Thread: dust extraction for foam
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25-10-2014 #3
Attached are a few pics of my dust extraction / cyclone system using one of the ebay units : http://www.ebay.co.uk/itm/DUST-MITE-...item4add951f46
It's mounted to an opaque 25L fermenting bin : http://www.wilko.com/homebrew-access...82a6756d2f3eda
The lid of the bin is reinforced with a disc of MDF which the cyclone bolts to. I also have 3 MDF rings inside the bin to prevent the bin trying to implode! You can see in the photo that I started with one ring in the centre of the bin which wasn't enough (see the stress marks!) 3 rings equally spaced works perfectly.
I could have used a stronger container, but couldn't find anything stronger that was transparent or opaque. I like being able to glance at the bin and see if it needs emptying.
The system is plumbed using standard waste pipe and fittings from B&Q. I also used a couple of these : http://www.axminster.co.uk/numatic-stepped-hose-reducer for connecting the flexible hose to the rigid pipes.
The fitting on the end of the Henry hose is a really nice push fit into the waste pipe. I have a short piece of pipe mounted parallel to the spindle which this pushes into to connect to the dust shoe. If I just want to use the vacuum then I can pull the hose out of the pipe use it manually, I also attach the standard Henry accessories for general cleaning the work area and floor.
I've been using this system now for 4 months and although i've emptied the bin 3 times Henry is completely empty apart from a few specks of dust inside.
So far the dust shoe and extraction has worked really well when cutting MDF, Fibreglass, Cast Acrylic and Foam. The only material it has struggled with is Plywood, this is due to the small diameter of the hose getting clogged with the long spirals of waste material.
My brother asked me if i'd cut a plywood sign for him a few weeks ago (i'd never cut plywood before). I said i'd give it a go and film it for him as he hadn't seen the machine working before. I wasn't going to make the video public as there are some mistakes and it's a bit boring, but as it's relative to what i've written above then here's the link : http://www.youtube.com/watch?v=20atRRHclbM
I regularly run Henry for 2 hours at a time. It pushes out some heat (keeps the shed nice and warm :) ) and isn't going to last as long as a proper dust extractor. It is quieter than an extractor though and is holding up nicely for the type of jobs I do.
Si
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