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08-04-2008, 04:14 PM
| #1 |
| Senior Member  Join Date: Sep 2005 Location: NE Ohio
Posts: 359
|  Dust Collection Physics Scrollers, I picked up a used oscillating spindle/belt sander over the weekend that has a 2½" dust port built into it. I'd like to be able to hook up my dust collector to it. The question is – would it be more efficient to run a 2½" hose to the DC and then open up to 4" with an adapter to attach to the DC (higher velocity/lower volume), or would it be better to put an adapter on (or close to) the machine port and run 4" to the DC (higher volume/lower velocity)? TIA for the help.
__________________ Bruce . . . because each piece will be someone's heirloom someday. visit sometime Hawk 220VS, Delta 40-570 |
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08-04-2008, 06:15 PM
| #2 |
| Senior Member  Join Date: May 2008 Location: Vancouver Island, BC. Canada
Posts: 1,830
| 4" all the way to the machine. Dust collectors work on volume of air moved so any reduction in size as well as sharp bends will affect performance. I have just set up a desk for sanding and carving. I have a 4" pipe to the side of the desk. I added a 2" short piece on it that I can move around as needed. I went back to the 4" and even put a 4x10 funnel on the end. Alan. |
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08-05-2008, 10:03 AM
| #3 |
| Dino  Join Date: Oct 2007 Location: Fergus Falls,MN
Posts: 680
| Stay 4" as much as you can. I am using a 21/2"extension on my DC and find a loss of suction. Am going to rig up 4" dryer vent ducting. Dean |
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