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Thread: dust extractor plans
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31st July 2015, 11:02 AM #1Senior Member
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dust extractor plans
I'm looking at building my own dust extractor for a T-13A thicknesser.
Has anyone seen any suitable plans ?
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31st July 2015, 11:04 AM #2.
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Depends how serious you are and the extent you wish to control fine dust.
Amongst the best designs are this one
http://billpentz.com/woodworking/cyc...clone_plan.cfm
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31st July 2015, 11:41 AM #3Senior Member
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1st August 2015, 09:07 AM #4Senior Member
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So would this be a suitable extractor for use with a T-13A thicknesser ???
http://www.machineryhouse.com.au/W886
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1st August 2015, 10:27 AM #5.
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That DC won't even collect the chips let alone the fine dust.
If you want to collect chips, any DC that uses 4" ducting will struggle., even a 2HP will struggle unless it is modified to use 6" ducting such as shown in this thread https://www.woodworkforums.com/f200/generic-2hp-dc-171247
If you want to collect chips and some fine dust the minimum would be the modified 2HP DC.
If you want to control fine dust then a 3HP DC is the minimum that should be used.
The DC should also be located outside the shed or at least enclosed inside an air tight cupboard inside the shed and vented outside the shed.
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1st August 2015, 06:21 PM #6
Hi mate
This is what I achieved with a carbatec 2hp jobbie;
https://www.woodworkforums.com/es/arc...p/t-30402.html
Horses for courses and one system that works will not be great for another.
In my current shop (small single garage size) I have two 1hp dust extractors that are mounted with the machine they extract for. So the TS has one that is under the table. The secret (IMO) if you are using small hp extractors is to have virtually no pipework. Just enough to connect the unit to the machine. On my leguna TS the pipe is 6" long .
If yours is only for one machine I think you will be fine with that 2hp if you do it this way.
Have fun.
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1st August 2015, 07:11 PM #7.
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Things have moved on quite a bit since you posted that thread and we now know a lot more about DCs, air flow and ducting.
In that thread you state the 2HP has a 1700 CFM flow.
The manufacturers spec is 1200 CFM which is too high by about a factor of two.
I have measured the flow rates of about half a dozen of these 2HP units and the best they can do using both 4" intakes is less than 600 CFM and this is before any machinery or ducting is added to the DC..
We also know that as soon as chip collectors are added the flow rate will further decrease by as much as 40% - they may seem like they suck but that's it they really don't.
They're great to collect chips but the reduced air flow rate does not collect enough fine dust.
A single 4" duct can only draw ~400 CFM when connected to standard DCs which is considered to be a factor of 2.5 times too little to control fine dust in a workshop.
Connecting additional 4" ducts to a small DC - especially in the way the generic 2HP does it does not result in 2 x 400 CFM it barely makes it to 600 CFM.
To achieve the recommended flow rates to control fine dust with conventional DCs the use of 6" ducting is essential.
The only way a 2HP can make use of 6" ducting is if it is substantial modified especially to improve the flow between the impeller and the bags.
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1st August 2015, 09:20 PM #8
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