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Dust collection setup for CNC

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Forum topic by redneck1210 posted 02-11-2016 02:15 PM 587 views 0 times favorited 7 replies Add to Favorites Watch
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redneck1210

4 posts in 297 days


02-11-2016 02:15 PM

I’ve spent months reading all the info related to DC. I believe I have a setup that should work but I want to see if everyone here can verify before I install everything.

I only have one machine in this shop, a 4×8 CNC router. The machine will be in the basement of my home in an unfinished area.

I will primarily be cutting hardwood plywood but occasionally MDF. This will be a hobby machine and I will most likely be cutting only 4 to 6 hours per week.

My gas HVAC system is in the same room as the CNC and dust collector. The intake vent for the HVAC is on the floor above though.

The DC will literally be right next to the CNC machine. To compensate for the full travel of the machine I will be connecting a 10’ 4’’ flex hose to the shoe on my spindle. The flex hose will be hung above the machine and go right to the DC, so very few if any bends.

I plan to vent the super fine particles outside the workshop. Distance from the DC to the outside vent will be approximately 8 feet. I was planning on using heavy 4’’ flex for the exhaust or 4’’ rigid aluminum flex pipe.

I currently have the following parts ready to go:

2HP Harbor Freight DC
Super Dust Deputy
Woodcraft 10’ 4’’ flex hose
4 in 26 gauge duct pipe
All reducers for the SDD to neck all the ports down to 4 in.

Is there any real benefit to adding a trunk line of 5’’ for such a short run? I am pretty sure I can connect the 10’ flex hose directly to the Super Dust Deputy. I may have to add a foot or 2, but I don’t imagine more than that. I suppose I could add a 5’’ trunk line made of 26 ga duct pipe and that may shorted the length of 4’’ flex hose.

Please let me know if I am missing anything with the proposed setup.


7 replies so far

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Ger21

1047 posts in 2592 days


#1 posted 02-11-2016 06:48 PM

I would run 5” from the Dust Deputy to the blower, and 5” pipe for the exhaust as well.

A 5” duct to the center of your machine, with the shortest flex possible would be best.

Having said that, it should still work fine with the 4”. Keep in mind, though, that if you are trimming the edge of an MDF sheet, a huge amount of dust may not be collected by the shoe.

-- Gerry, http://www.thecncwoodworker.com/index.html http://www.jointcam.com

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716

502 posts in 378 days


#2 posted 02-11-2016 08:15 PM

My gas HVAC system is in the same room as the CNC and dust collector. The intake vent for the HVAC is on the floor above though.

I plan to vent the super fine particles outside the workshop. Distance from the DC to the outside vent will be approximately 8 feet.

- redneck1210

1. The important question what is the distance to your nearest neighbor. I would hate if someone directed fine dust into my window and would try to do something about it.

-- It's nice!

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redneck1210

4 posts in 297 days


#3 posted 02-11-2016 08:25 PM


My gas HVAC system is in the same room as the CNC and dust collector. The intake vent for the HVAC is on the floor above though.

I plan to vent the super fine particles outside the workshop. Distance from the DC to the outside vent will be approximately 8 feet.

- redneck1210

1. The important question what is the distance to your nearest neighbor. I would hate if someone directed fine dust into my window and would try to do something about it.

- 716

They’re a good way away, so no worries in that regard.

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716

502 posts in 378 days


#4 posted 02-12-2016 01:09 AM


I plan to vent the super fine particles outside the workshop. Distance from the DC to the outside vent will be approximately 8 feet. I was planning on using heavy 4 flex for the exhaust or 4 rigid aluminum flex pipe.
- redneck1210

So how are you going to do that ? Just a fan in the wall opening ?

-- It's nice!

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redneck1210

4 posts in 297 days


#5 posted 02-12-2016 01:58 AM


I plan to vent the super fine particles outside the workshop. Distance from the DC to the outside vent will be approximately 8 feet. I was planning on using heavy 4 flex for the exhaust or 4 rigid aluminum flex pipe.
- redneck1210

So how are you going to do that ? Just a fan in the wall opening ?

- 716

I’m going to use one of the ports with auto closing louvers and a cage.

View WoodNSawdust's profile

WoodNSawdust

1417 posts in 638 days


#6 posted 02-12-2016 12:26 PM


My gas HVAC system is in the same room as the CNC and dust collector. The intake vent for the HVAC is on the floor above though.

The DC will literally be right next to the CNC machine. – redneck1210


The DC won’t be 100% efficient at collecting the dust. My question is if your furnace is a super efficient unit that is a closed unit or if you have an open flame that close to the DC and CNC machine?

-- "I love it when a plan comes together" John "Hannibal" Smith

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redneck1210

4 posts in 297 days


#7 posted 02-12-2016 01:10 PM


My gas HVAC system is in the same room as the CNC and dust collector. The intake vent for the HVAC is on the floor above though.

The DC will literally be right next to the CNC machine. – redneck1210

The DC won t be 100% efficient at collecting the dust. My question is if your furnace is a super efficient unit that is a closed unit or if you have an open flame that close to the DC and CNC machine?

- WoodNSawdust

It’s an older open flame unit. I would think you would have to have a lot of suspended particles to pose a problem though?

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