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Thread: pvc pipe size for ducting
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13th January 2013, 11:40 PM #46SENIOR MEMBER
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Thanks Chris. Because I am new to this can you please explain what a clearout fitting is.
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13th January 2013 11:40 PM # ADSGoogle Adsense Advertisement
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14th January 2013, 12:06 AM #47GOLD MEMBER
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Here are some pics. What I do is remove the cover, grind off the flange which appears after the cover is removed and screw it to whatever it is going on. I have used one on the blast gate I made in the first pic.
CHRIS
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14th January 2013, 12:17 AM #48.
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There is another flange that looks like this that will save you the need to grind anything away.
It's the one on the right in this image
If you can get it inside the cabinet so that it pokes through the cabinet to the outside then the radiused edge will act a bit like a bell mouth port and improve the air flow.
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14th January 2013, 12:27 AM #49GOLD MEMBER
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Bob I have never seen one like that, can you get it in 150mm and what is it called. It looks like it is two pieces glued together.
CHRIS
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14th January 2013, 12:34 AM #50.
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I don't know what they are called.
The 4" ones are available at most Bunnings.
The only place I have seen the 6" ones was at a specialist pipe shop but I don't have one myself.
It looks like it is two pieces glued together.
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14th January 2013, 02:55 AM #51... and this too shall pass away ...
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You can make your own fittings if you prefer. Just heat about 30 mm of the end of a 150 mm pipe in cooking oil until it is quite soft. Then press it over a bell shape to get the shape started (I used one of my wife's baking pans) and then press it against something flat like a breadboard. Cool it with water, and there is your fitting.
Did this to make ports for several of my machines.
The only port made where the flange can be seen is post#3 at https://www.woodworkforums.com/f200/m...chines-161166/ The flange I made is in the 150 mm pipe pressed up against the band saw cabinet.
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16th January 2013, 02:22 PM #52
Apologies for taking so long to post these pics, I have been busy elsewhere.
I try and do new things twice.. the first time to see if I can do it.. the second time to see if I like it
Kev
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16th January 2013, 02:54 PM #53.
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Kev, Thanks for posting the pics.
Unfortunately the 90 mm ducting will really be throttling this system.
As I said in my post earlier in this thread a short 90 mm pipe will only draw ~345 CFM which is well below the possible spec for that DC.
One small benefit of using 90 mm ducting is that it is not a lot of money to lose when upgrading.
I note some of your ducting is above the gyprock? I assume you can get into the celling cavity to attend to any blockages?
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16th January 2013, 07:46 PM #54
Bob, I made sure that I could still gain access to the roof space just in case some blockage occurred
I try and do new things twice.. the first time to see if I can do it.. the second time to see if I like it
Kev
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16th January 2013, 08:00 PM #55.
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