Wood Working Air Filtration???

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camotoe
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Wood Working Air Filtration???

Post by camotoe » Fri Jul 10, 2020 2:59 pm

I have a water table that does a great job with the smoke however it doesn't capture all of the smell / smoke. Has anyone tried the air filtration units that clean the air in woodworking shops? The ones that are designed to hang from the ceiling. Jet, Rikon, Shop Fox etc brands?
I have AC in my shop and would like to run my table without having to open the doors and windows and crank up the fans to clear the air.

adbuch
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Re: Wood Working Air Filtration???

Post by adbuch » Mon Jul 13, 2020 1:44 am

Hi Camo,
I use a draft system in addition to my water table/tray to eliminate residual smoke/smell from my shop. I am able to run my 6 ton ac/heat system with no problems.
David
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Anch0rDrop
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Re: Wood Working Air Filtration???

Post by Anch0rDrop » Fri Nov 20, 2020 12:08 am

adbuch wrote:
Mon Jul 13, 2020 1:44 am
Hi Camo,
I use a draft system in addition to my water table/tray to eliminate residual smoke/smell from my shop. I am able to run my 6 ton ac/heat system with no problems.
David
David what a elegant solution. can you point me towards some more information about your build?

adbuch
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Re: Wood Working Air Filtration???

Post by adbuch » Fri Nov 20, 2020 12:53 am

Anch0rDrop wrote:
Fri Nov 20, 2020 12:08 am
adbuch wrote:
Mon Jul 13, 2020 1:44 am
Hi Camo,
I use a draft system in addition to my water table/tray to eliminate residual smoke/smell from my shop. I am able to run my 6 ton ac/heat system with no problems.
David
David what a elegant solution. can you point me towards some more information about your build?
You can see photos of my water table and draft system build here.
https://photos.app.goo.gl/h8LHufi6frttfGNQA
The idea for this concept came from Keith Fenner.
You can see videos of his entire build here:
https://www.youtube.com/watch?v=aPDn42AsgfI&t=10s
David

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acourtjester
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Re: Wood Working Air Filtration???

Post by acourtjester » Fri Nov 20, 2020 9:48 am

Neat things,
David don't know if you watched this video from that guy, but It is a very involved layered plasma cut wall hanger.
DIY 4X4 Plasma/Router Table
Hypertherm PM65 Machine Torch
Drag Knife and Scribe
Miller Mig welder
13" metal lathe
Small Mill
Everlast PowerTig 255 EXT

adbuch
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Re: Wood Working Air Filtration???

Post by adbuch » Sat Nov 21, 2020 1:03 am

Thanks! I hadn't seen that one yet. Keith is the one who put me onto Plasmacam when I was looking to either build or buy a table about 4 years ago.
David

Rodw
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Re: Wood Working Air Filtration???

Post by Rodw » Sun Nov 22, 2020 6:13 am

David, an awesome downdraft. How is the airflow from that fan? is it enough?
I wanted to do something similar but was planning on zoning the air flow so in your case, one side would be active and swap to the other side as the torch crossed the centre line via air ram operated shutters.

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Re: Wood Working Air Filtration???

Post by adbuch » Mon Nov 23, 2020 2:22 am

Rodw wrote:
Sun Nov 22, 2020 6:13 am
David, an awesome downdraft. How is the airflow from that fan? is it enough?
I wanted to do something similar but was planning on zoning the air flow so in your case, one side would be active and swap to the other side as the torch crossed the centre line via air ram operated shutters.
Thanks! Yes the airflow is sufficient for my application. The key here is to keep most of the table covered so as not to loose too much suction. With a full 4x4 sheet, this is no problem. When cutting smaller pieces, I generally cover the open portion of the table with pieces of masonite (1/8" thick hardboard). Also sometimes a partial sheet of sheet metal. I also find the masonite handy as it acts as an additional working surface when the table is not in actual use cutting parts.

In the photos below, I am just getting ready to cut some small parts from a piece of 3/8" steel plate. The magnetic work clamp is connected to both machine work lead and cutting grates/earth ground rod.

David
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Rodw
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Re: Wood Working Air Filtration???

Post by Rodw » Mon Nov 23, 2020 3:10 am

Great feedback thanks. One of the Linuxcnc guys has a build in progress of a 6' x 12' table with 8 downdraft ports. When I saw it, I wrote a component that will trigger each of the 8 zones based on the torch position (eg when its in a 3' x 3' quadrant above a port, only that one will open.
downdraft.jpg

fan.jpg
I'm really looking forward to seeing how well it works out for him. At this stage we don't think walls are required between segments. I suspect the masonite won't be required as the suction will be localised close to the cut..

This is a proof of concept I did with a ram that is far too big but it shows what will happen when its in operation.


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adbuch
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Re: Wood Working Air Filtration???

Post by adbuch » Mon Nov 23, 2020 7:47 am

Looks like he has a nice clean DHC2 in the background.
David

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