Thread: General International Dust Collector

Its a shame you did all that ducting in 4".
That Extractor already has an 8" inlet and outlet so it would appear to be capable of at least 1200 cfm.
Irrespective of the Extractor used, Using 4" ducting immediately throttles the flow to ~400 CFM which is a factor of 2.5 less than what is required for fine dust control.
To get the full 1200 cfm of flow the ducting has to be 6" as do the ports on the machinery.

One other thing I notice is you appear to have the blast gates at machine level rather than at the trunk entry level.
This can lead to sawdust from one machine dropping down the drop down ducting to the other machines so you may wish to regularly clear any dust that does this. If one machine is not used for some time this can choke the drop down to the point where the extractor cannot clear that duct.
It's always better to have the gates close to the trunk line.

I wear ear protection often but would not like to have to wear it for every single operation that required dust extraction.
Here in Oz we don't usually have heating issues so we are able to put our extractors outside which gets rid of the noise and any fine dust that escapes the filter or ducting.
However, some folks cannot do that so they enclose the duct extractor inside a sound proof enclosure inside their shed and vent the exit air outside their shed.
If you want to retain the heat you would have to vent back inside the shed but can at least reduce the extractor noise this way.

I agree with bob about the 6" ducting. Can't believe how much difference that makes, even with my little 2hp dusty. Would be worth upgrading at some stage. With that cyclone it might suck the paint right off the machine, but it will certainly grab the dust.

6" ducting certainly adds to the cost of the ducting though. Each junction is easily 5 times more expensive than 4".

Nice workshop though. Looks super organised and practical. Needs a bit more mess to make it believable though...😄

Trav

What Trav wrote - much too clean.