A new dust extactor - Router Forums
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post #1 of 15 (permalink) Old 04-17-2012, 08:23 PM Thread Starter
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Default A new dust extactor

I have just started a project of shelving in a box room, and have 450 metres of 1/4 round edges to do, i thought you might be interested on my dust extractor and cyclone built for about $20, 2 flower pots and some threaded rod the rest was laying around in my shed.

the shroud is a potato and gravy pot courtesy of KFC

my vacuum is our old house vacuum that runs at about 1000 watts, it had a bag that is only about 2 litres so the cyclone is great and goes straight into the workshop rubbish bin.

i ran a couple of lengths through today and it works great...
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post #2 of 15 (permalink) Old 04-17-2012, 10:20 PM
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Maddog1962,

I have heard something about cyclone systems in wood working but don't know chit about them, do you have the info on how you built this or where one could get it, the principal behind this, is it hard to do or anything special to do it,

I have 2 old vacuums that I could do this with if I had the info or help to do it, any help, send my way, Thanks

Poppa Rob
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post #3 of 15 (permalink) Old 04-17-2012, 10:37 PM
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Hi Steve:

One suggestion I would like to make: reverse the connections to the cyclone. Cyclone intake on the perimeter and outtake at the top. I believe you'll get a greater separation of dust from the air stream.

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post #4 of 15 (permalink) Old 04-17-2012, 10:47 PM Thread Starter
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[COLOR="DarkGreen"][QUOTE=Cassandra; One suggestion I would like to make: reverse the connections to the cyclone. Cyclone intake on the perimeter and outtake at the top. [/COLOR]

I had intended to do that, as all the ones i have seen are that way round, now i'll have to make it properly.
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post #5 of 15 (permalink) Old 04-17-2012, 11:07 PM Thread Starter
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OK did that, thanks Cassandra :-) , not as hard as i thought, i am still amazed i built it the wrong way round in the first place...
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post #6 of 15 (permalink) Old 04-17-2012, 11:19 PM Thread Starter
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I have heard something about cyclone systems in wood working but don't know chit about them,

Hi Poppa Rob,

I don't know anything about them but had a look around the web and did a couple of searches on You-tube under 'Cyclone dust' there are some good ideas there, i recall seeing some very technical postings somewhere but just thought i'd have a crack while not spending any money to see what i could come up with, the cone is just 2 flower pots from the garden center with the bottoms cut out.

Cheers

Steve
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post #7 of 15 (permalink) Old 04-18-2012, 01:37 AM
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For those living in North America - Onieda had their cyclone on sale a week or so ago for $39.00 this is a great unit. Cyclones really help and might I add that You need a Hepa Filter also on Your shop vac

K.I.S.S.- Keep It Super Simple
For I Am Confussion at its Best
Don't fix it if it Ain't broken
Makin sawdust now in South Louisiana
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post #8 of 15 (permalink) Old 04-18-2012, 05:53 AM
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Cyclone is one way to go, the other is a Thien separator.

Thien separators are more common to be build by people themselfs. Their forum (sorry, can not post links since I do not have the required 10 posts but if you google Thien separator you will find it easily) has many examples on people that have build them in all kinds of sizes.

Cyclone's are usualy (But like OP proved, not always because he build one himself and you can find several people who did the same on youtube) ready bought cyclone devices like Oneida (.com) sells in the US or cyclonecentral (.co.uk) sells in Europe and then easily build onto some box.

I personaly prefer the Thien separator. Not because it has superior dust extraction (both do a very good job) but because it usualy is build lower, not with the high cylindrical cone on top of it making it less prone to falling over if you pull the tube.
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post #9 of 15 (permalink) Old 04-18-2012, 07:42 AM
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Quote:
Originally Posted by maddog1962 View Post
OK did that, thanks Cassandra :-) , not as hard as i thought, i am still amazed i built it the wrong way round in the first place...
"Been there, done that" on far too many ocassions.

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post #10 of 15 (permalink) Old 04-18-2012, 09:05 AM
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Google bill pentz for the holly grail of cyclone and dust extraction. His work has changed cyclone designs throughout the industry.
You should have more of a cone for your cyclone and his site calls out the ratio of taper that works best.
Also if you can shorten up that very restrictive vacuum hose. All those ridges are sloeing down your air and you want high airflow, not high vacuum, for dust exstraction.

I have a few old sald bowls aka parts washing tubs floating around i can now put to good use.
Thanks for the novel idea
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