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Framecon 2021

Air Filtration System

shayla

WOW Framer
Messages
30,991
Three more photos:

Picture one is hose at lower left, coming from dust collector to a main vertical pipe and also to the Hoffman jointer.

shop filtration 4.jpg

Photo two is upright main line and off-shoot to Hoffman shop filtration 5.jpg

and another view:

shop filtration 6.jpg
 
Last edited:

shayla

WOW Framer
Messages
30,991
Five in this post:

First photo, an offshoot for tools like sander, router, etc...

shop filtration 7.jpg

He recently built a shroud for the manual sander. It had been connected to a shop vac, but now, to this system.
shop filtration 8.jpg

Close-up of pipe connection under sander
shop filtration 9 pipe under sander.jpg

There's a port on either side of the sander, too, for blowing into.
shop filtration 10 sander side port.jpg

and an underneath view, with sander upper left.

shop filtration 11 beneath sander.jpg

This last photo also shows his nifty way of storing vices under the table (at right). We don't use these too often, as he mostly uses Master Clamps. Handy to be able to swing them down when not in use.

It should be noted that, for a simple dust catch, Rob Markoff's envelope method also works. But we're definitely loving this.
 

Dirk

MGF, Master Grumble Framer
Messages
526
Hoffman turned out to be a bit of a pain. Dust port is slightly greater than 2.5 inch OD. (65mm?) Finally settled on putting a drum sander in the drill press and expanding the ID on a 2-inch schedule 40 pvc 90. Thought about putting the fitting in a pot of boiling water and shoving it over the dust port. The first time I changed the cutter size on the Hoffman, I realized that would have been a bad idea. Access to router depth locking screw is blocked by the elbow. We'll see how long the interference fit lasts with repeated removal/reattachment. Could replace the socket-head cap screw with a Grade 8 hex bolt and use an end wrench, but why fix it if it ain't broke?
The wye port in the right of the picture is for collecting dust that needs to be tapped out of dovetail cut (turns out there's way less of that to do, but I didn't know that when designing the system), and the wye port on the left of the picture is designed to allow enough air volume to the blower to get the necessary air speed. (Gate is for adjustment.) Total cross-sectional area of ports is roughly equivalent to that of 6-inch pipe.
 

shayla

WOW Framer
Messages
30,991
Okay, last batch. Three photos.

First is a spare port, for hooking up whatever. You like know this, but the way the wired system works, a central switch is first flipped on.
Once that's been flipped, the dust collector is off until a gate is opened. Opening any gate turns on system and the dust collector revs up.
(It's pretty loud, having a three horsepower motor....wear ear protection).

shop filtration 12.jpg

and the system connection to the saws. He just built this wooden saw shroud.
We had one before, but it was more open.

shop filtration 13 saws.jpg

The main tube vacuums from behind the saws, with the smaller central one sucking dust in front of the fence.
He knows that it's in the way of taller mouldings, but is also fine with raising it for those. The central T shape of the shroud
is easily removed if necessary. The two top wingnuts for that purpose.
 
Framecon 2021

Dirk

MGF, Master Grumble Framer
Messages
526
White pipe is D2729. Green pipe is D3034 - twice the wall thickness with same OD, and a snug fit on blast gates.
Also ... added a thermal overload relay in series with the blast gate relay for overcurrent protection on the motor.
 

shayla

WOW Framer
Messages
30,991
I was lying in bed last night and thought, 'Wait. I should have titled it 'Dust Collection System...' Oh, well.

It's also likely that folks with choppers generate much less fine dust than those with saws. Our prior system worked okay, but fine dust still flew into the air. This is a lot of system for the space, but it sure works well.
 

monkey

CGF II, Certified Grumble Framer Level 2
Messages
318
Very nice set up. How is the noise level of the Grizzly dust collecter? And do you like it? Did you also ground the pvc pipes? I heard to help with the static.
 

Larry Peterson

PFG, Picture Framing God
Messages
8,147
Did you also ground the pvc pipes? I heard to help with the static.
Grounding the entire system is an absolute necessity. Explosions have a tendency mess up ones shop.
 
W.D Quinn Saw Co. - US Made Picture Frame Blades

Dirk

MGF, Master Grumble Framer
Messages
526
It's noisy but lower frequency than saws, etc. So far, so good. Still need to check air velocity in pipes. From what I've read on the need for grounding, there's no evidence that a small system like this can or has generated a large enough static discharge to cause an explosion or fire. Hardware passing through a blower with a steel impeller, however, could retain heat long enough to ignite wood dust. This unit has an aluminum impeller, so less risk of spark, and I have no plans to sweep up the floor with a hose attached to the dust collector. Also, screens at inlets to prevent ingestion of random parts.
 

Jim Miller

SPFG, Supreme Picture Framing God
Forum Donor
Messages
17,616
👍
Wow. That's an impressive assembly. I wish I had done something like that in my own shop years ago.
 
Vermont Hardwoods open and shipping

Paul Cascio

SGF, Supreme Grumble Framer
Messages
4,640
My wife just makes me take my shoes off at the door.
 

echavez123

MGF, Master Grumble Framer
Messages
804
Love the Grizzlys. Got one just like yours. Ya make me jealous with two!
 

framah

PFG, Picture Framing God
Messages
8,569
I ran bare copper wire grounded on the chop saw and then drilled a hole in the PVC pipe and ran the wire inside the pipe down to the collector.
Then drilled a hole there and ran the wire over to the blower motor and grounded it there.

Tho you might think it isn't big enough to generate static, better safe than sorry and it isn't that much work.... well.. easier when you are building it than after the fact.

No big ba-da-booms for me!!
 

Mike Labbe

Forum Support Team Administrator
Team member
Messages
12,081
We need a better system in our shop. Good ideas here!
 

Dirk

MGF, Master Grumble Framer
Messages
526
If you like numbers, take a peek at billpentz.com. Lots of food for thought.
 
Vermont Hardwoods open and shipping

David Waldmann

SGF, Supreme Grumble Framer
Featured Vendor
Messages
2,713
That's a very substantial system for the equipment it services. Of course I would expect no less from a man of Dirk's calibre.

But I will echo Wally's advice - ALL dust collection systems should be well grounded, and plastic ones to the extreme.

I'm just surprised that Dirk didn't put in a VFD with computer input to adjust the speed based on the number and size of opened blast gates...
 

Dirk

MGF, Master Grumble Framer
Messages
526
That's a very substantial system for the equipment it services. Of course I would expect no less from a man of Dirk's calibre.

But I will echo Wally's advice - ALL dust collection systems should be well grounded, and plastic ones to the extreme.

I'm just surprised that Dirk didn't put in a VFD with computer input to adjust the speed based on the number and size of opened blast gates...
Good point.
Poor old brain doesn't associate vfds with single-phase motors.
Better yet, use a magnahelic gauge on each branch to provide feedback to the vfd.
 
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