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Thread: My dust collection journey.
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22nd April 2018, 06:04 PM #1Senior Member
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My dust collection journey.
Since my retirement I decided to get serious about dust extraction in my workshop.
After hours and hours of reading this and other forums, here’s my progress to date.
Here is the DE enclosure, double lined with 12mm ply and insulated.
2 hp generic DE with inlet port opened up to 150mm and reverse BMH fitted.
BMH fitted to table saw.
Before I could make the blast gates I needed to make a circle cutting jig for the router.
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22nd April 2018 06:04 PM # ADSGoogle Adsense Advertisement
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22nd April 2018, 06:13 PM #2Senior Member
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Sorry about the photos. Can't seem to make them right way up.
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22nd April 2018, 06:18 PM #3Senior Member
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22nd April 2018, 07:22 PM #4.
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Nice work - looks like you have done your homework.
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23rd April 2018, 07:43 AM #5Senior Member
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23rd April 2018, 08:36 AM #6Senior Member
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extractor fan 1.jpgextractor fan 2.jpgI also have 2 fans installed in the end wall. I think 1 is 550cfm but can't find anything about the Hitachi unit. Should give about 8-11 changes per hour. I will keep looking for a bigger fan to give a bit more cross ventilation.
Last edited by Flintlock; 23rd April 2018 at 08:39 AM. Reason: add photo
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23rd April 2018, 08:44 AM #7Senior Member
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20180422_143144_resized.jpg20180422_143242_resized.jpgHere's a couple more photos of progress.
Completed BG Ductwork in shed.
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23rd April 2018, 08:58 AM #8.
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What sort of glue did you use for the rocker gate flanges, a photo in the doc shows a squeeze bottle with ...gum glue on it?
We're all learning in one way or other. I make a lot of mistakes and things that don't work but only post some of them.
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23rd April 2018, 09:09 AM #9.
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They wont be 550 CFM especially with the louvres on one fan and the grille on the other so I'd recommend getting rid of the louvres/grille. The best location for fine dust extraction by exhaust/vent fans are up high on walls which places them out of the way so they won't need any louvres and grilles for safety purposes.
RE: Bigger fan.
I wish you were closer I have an absolute beauty in my shed I cannot give away that you could have.
Its a 1HP 600 mm fan from an evap AC and it even has a semi-BMH style entry.
Even though its a radial fan it has 8 variable pitch blades and would probably deliver close to 2000 CFM
If anyone wants it, all it needs is a capacitor and I can help you fit that if you need help. There is a circuit diagram on the motor that shows how to wire it up that includes the capacitor.
If anyone loyal wants it shoot me a PM.
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23rd April 2018, 09:12 AM #10.
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Looks like a nice "busy" shed. You will be well pleased to reduce the dust levels in there once you get it all up and running.
What's going on with the 4" ducting connected to the 6" rocker gate in the second photo above?
Not saying there's a problem, just curious.
I understand that 6" PVC junctions are pretty exxy in NZ so your installation show considerable commitment to the cause.
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23rd April 2018, 10:26 AM #11Senior Member
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23rd April 2018, 10:33 AM #12Senior Member
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The 4" goes to the drill press. As an aside, I didn't have a 150-100 level invert so I used a slightly wonky 4' BMH reversed and glued it into a short length of 150mm joiner. this allowed me to fit the 4" pipe in between 2 fixed fittings. ie slide it into the 6" joiner then pull it back into the 4" bend. (if that makes scense)
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23rd April 2018, 10:42 AM #13Senior Member
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23rd April 2018, 03:26 PM #14.
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23rd April 2018, 07:28 PM #15Senior Member
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BMH reducer.jpgDP ducting.jpgThe 4" line to the drill press and the BMH reducer.
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