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Forum topic by Drew - Rock-n H Woodshop posted 11-22-2011 07:31 PM 798 views 0 times favorited 11 replies Add to Favorites Watch
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Drew - Rock-n H Woodshop

638 posts in 1444 days


11-22-2011 07:31 PM

Topic tags/keywords: delta dust collector shop

Hey fellow LJ’s,
I have a Delta 650cfm dust collector. I am interested to know, is it possible to route piping around the shop rigged with blast gates to close off any other ports to help with suction? And if this was done, with a low cfm like mine of 650, will it work with this method or will I have to just cart the unit to each tool to collect directly from its port. Also, will using a smaller pipe to restrict the suction size work better than a bigger pipe? Do any of you use a collector this little? And if so, do you have your shop rigged with piping to run to each tool. How does it work for you?

Drew

-- Drew -- "I cut it twice and it's still too short!"- Rock-n H Woodshop - Moore, OK


11 replies so far

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Drew - Rock-n H Woodshop

638 posts in 1444 days


#1 posted 11-22-2011 11:38 PM

bump…...

-- Drew -- "I cut it twice and it's still too short!"- Rock-n H Woodshop - Moore, OK

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PurpLev

8476 posts in 2402 days


#2 posted 11-22-2011 11:45 PM

even larger single stage DCs will have a hard time handling duct and should be planned carefully (1000CFM+). personally with anything in the 1HP and less and at 650CFM single stage I wouldnt even attempt to do anything stationaty and would just move my DC from tool to tool. sorry to be so blunt about it, but this is the nature of the smaller DCs.

FWIW I have a 1100CFM DC and experienced poor results with trying to keep it stationary with medium runs. ended up moving it closer to the dust generators (TS/planer/jointer) and have ~5ft runs to get adequate suction

-- ㊍ When in doubt - There is no doubt - Go the safer route.

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dbhost

5387 posts in 1985 days


#3 posted 11-22-2011 11:49 PM

Drew, that 650 CFM DC was designed to pull from a single, short hose. It lacks the power to draw over long distances. I have an alleged 2HP 1550 CFM (All dust collector manufacturers LIE about their ratings, always overstated) and it is enough for my simple ducting system, but I wouldn’t push it any further. My longest run is 20’.

If you want to stay with that small DC, roll it to the machine to be used, and connect as short of a hose as you can get away with to it…

-- My workshop blog can be found at http://daves-workshop.blogspot.com

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Sawkerf

1730 posts in 1822 days


#4 posted 11-22-2011 11:57 PM

I ran a Jet 650 cfm with 4” ducting and gates at each tool and it did ok – but not great. If I kept the filter bag clean it really hepled.

My system got much better when I went to the 1150 cfm Jet with the pleated fliter, piped as much as possible with 6” duct, and minimized my use of flex duct.

-- Adversity doesn't build character...................it reveals it.

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Grandpa

3212 posts in 1429 days


#5 posted 11-23-2011 12:01 AM

There is a good article in Fine Woodworking magazine. Check it out.

View Drew - Rock-n H Woodshop's profile

Drew - Rock-n H Woodshop

638 posts in 1444 days


#6 posted 11-23-2011 12:35 AM

Okay, thanks guys! big help! :)

-- Drew -- "I cut it twice and it's still too short!"- Rock-n H Woodshop - Moore, OK

View Rick  Dennington's profile

Rick Dennington

3613 posts in 1948 days


#7 posted 11-23-2011 04:28 AM

Drew,

You know what they say…..”The bigger the better”. I have a Delta 1200 cfm in my shop, and wish it was bigger, sometimes. But if I only run one machine at a time, and keep the other blast gates closed, then it does really good. I can even run 2 machines at once if I needed to, but have never found the need to. As was stated above, move the d.c to the machine you’re operating, small duct run…wouldn’t work for me, but might for you…..OR…you might possibly sell it and get a bigger d.c with more cfms….just a thought…..

-- " I started with nothing, and I've still got most of it left".......

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Beginningwoodworker

13347 posts in 2426 days


#8 posted 11-24-2011 06:16 PM

4’’ dust work, might be the best way to do it.

-- CJIII Future cabinetmaker

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Bill White

3589 posts in 2714 days


#9 posted 11-24-2011 06:47 PM

Sell yours and get a Harbor Freight unit. Inexpensive and more adaptable for your needs. Even that one will not work that well for a “whole shop” application. For that use, you’ll need a big unit.
Bill

-- bill@magraphics.us

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MrRon

2991 posts in 1997 days


#10 posted 11-24-2011 07:13 PM

I would stress the ductwork must be LEAK free. Even the slightest leak can degrade any DC system. The blast gates are major culprits. Cheap ones may leak more than you want. I would go with a 6” main run with 4” taps to each machine and hook up your 650CFM DC. If it works ok, that’s it. If not, get a larger DC. The ductwork will still be usable without change.

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Sawkerf

1730 posts in 1822 days


#11 posted 11-24-2011 08:47 PM

A big AMEN to MrRon’s comment about leaks. When I ran my 6” metal duct, I taped every joint and the duct seams with aluminum duct tape. A bit spendy, but it lasts longer than duct tape or electrical tape.

-- Adversity doesn't build character...................it reveals it.

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