Here is another dust collector hood idea. This is a somewhat updated version of hoods I built (and used since) over 20 years ago. They consist of lightweight plastic kichen mixing bowls (11" O.D. x 6" tall) and 4" HVAC duct "start collars" with crimp tab connection, found at Menard's, H.D. etc.
I'd tried a 4" dia. bell air inlet (black aluminum, shown for comparison) that was discussed here in the past. It works well but it has to be quite close to the spinning wood to be effective at grabbing all the dust (I don't vac chips). I use a 650cfm (1hp?) Jet 2-bag collector (5-micron cloth bags, recently cleaned, performance improved greatly!)
I chucked a 4" hole saw in my drill press to drill the bowls and used a bench chisel to trim the burr plastic from the holes. Insert the crimp tabs of the sheet metal start collar in from the bowl's exterior and firmly bend over the tabs flat against the inside bowl bottom. It helps by standing the duct collar on your bench and pressing against the tabs. That's it, it's ready to insert into your 4" exhaust duct/hose. (The same start collar comes in 6" and larger, too.)
I show it hanging from bungees at my Vicmarc and supported horizontally behind my Oneway. Both of these hood supports are loose- at the Vic, I can use my left hand to hold the placement of the hanging hood where I need it. At the Oneway I can move closer and further as needed. The 11" funnel effect of the bowl sure works well to direct air from the bowl rim area, a larger area than the aluminum bell hood.
The system will only allow 4 photos per message, I'll post as few messages to show them all.
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![20240720_143600.jpg 20240720_143600.jpg](https://www.aawforum.org/community/data/attachments/62/62272-fd8e125960f469accd4d16e31583b415.jpg)
I'd tried a 4" dia. bell air inlet (black aluminum, shown for comparison) that was discussed here in the past. It works well but it has to be quite close to the spinning wood to be effective at grabbing all the dust (I don't vac chips). I use a 650cfm (1hp?) Jet 2-bag collector (5-micron cloth bags, recently cleaned, performance improved greatly!)
I chucked a 4" hole saw in my drill press to drill the bowls and used a bench chisel to trim the burr plastic from the holes. Insert the crimp tabs of the sheet metal start collar in from the bowl's exterior and firmly bend over the tabs flat against the inside bowl bottom. It helps by standing the duct collar on your bench and pressing against the tabs. That's it, it's ready to insert into your 4" exhaust duct/hose. (The same start collar comes in 6" and larger, too.)
I show it hanging from bungees at my Vicmarc and supported horizontally behind my Oneway. Both of these hood supports are loose- at the Vic, I can use my left hand to hold the placement of the hanging hood where I need it. At the Oneway I can move closer and further as needed. The 11" funnel effect of the bowl sure works well to direct air from the bowl rim area, a larger area than the aluminum bell hood.
The system will only allow 4 photos per message, I'll post as few messages to show them all.
![20240720_143023.jpg 20240720_143023.jpg](https://www.aawforum.org/community/data/attachments/62/62269-461799985d35f8ceb302a96974146bc2.jpg)
![20240720_143103.jpg 20240720_143103.jpg](https://www.aawforum.org/community/data/attachments/62/62270-249f16eaa5ff40f99402dba1db608efd.jpg)
![20240720_143218.jpg 20240720_143218.jpg](https://www.aawforum.org/community/data/attachments/62/62271-af56d50804ae9757aa0a325499c47dd5.jpg)
![20240720_143600.jpg 20240720_143600.jpg](https://www.aawforum.org/community/data/attachments/62/62272-fd8e125960f469accd4d16e31583b415.jpg)
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