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post #1 of 22 (permalink) Old 05-09-2013, 08:46 AM Thread Starter
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Default Need For A Better Dust Colection System

The dust collection that I currently have in my shop works pretty weil when connected to my band saw, my jointer and my planer, but it sorely inadequate for use on the table saw. I'm wondering what would be good dust collection system that would be effient and would actully work on the table saw. My saw is a hybrid which means, if you don't know, that the moter resides in a cabinet under the table top. There is a 4" dust collection port on the rear and toward the bottom of the cabinet, but when the present DC system is collected to the port, the system just isn't powerful enough to suck the saw dust into the system. The system that i have is the Dust Right System with a 30 gallon trash can in line for the chips to fall into.

Just wondering what I need that would work.

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post #2 of 22 (permalink) Old 05-09-2013, 10:22 AM
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The problem is that the saw blade is tossing a lot of dust as it rises above the table and a lot of it is straight at your face. There are some add on overarm blade guard/dust collectors available that should make a big difference but they are as expensive as your fence. Phil posted some links to homemade ones a while back that should work too. You might also be able to modify the guard that came with your saw and glue on a dust hose connection.

The tradeoff is reduced visibility when cutting as well as being seriously in the way when making very narrow cuts. But I know I have to do something because I start getting flu-like symptoms after cutting mdf for a few hours and that is a very bad sign.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #3 of 22 (permalink) Old 05-09-2013, 10:36 AM
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Jerry, you must be using the dust right with adapters to reduce your hose size? You would get better results using the Jet separator lid on a large trash can... you have choke points that restrict your air flow. You need 4" hose connections all the way through.

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post #4 of 22 (permalink) Old 05-09-2013, 11:42 AM Thread Starter
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Jerry, you must be using the dust right with adapters to reduce your hose size? You would get better results using the Jet separator lid on a large trash can... you have choke points that restrict your air flow. You need 4" hose connections all the way through.
Well Mike, I'll try typing this again, as so often happens, just about the time I get done with my reply, it just goes away and I have to start over, what a headache.
I
No, I do not have any reducers in the system, it's a 4" run all the way. What I am doing now is to hook the hose to the port on the saw,open the cabinet door and push the accumulated saw dust into the port from the inside of the cabinet. I have thought of buying a second DR system and hooking the two of them together with some sort of a "Y" to see if the power from two systems might be enough to suck the sawdust out of the cabinet and into the system. I don't mind spending the money if I could be sure that it would work, but of course I can't be sure and this is why I started this thread, just looking for some input on the issue. I know that the system, or at least suspect that nothing is going to keep the dust that is thrown up to the top of table from being thrown out, that is with out a top installed system as suggest aboe but I sure would like for the dust that is going down to be carried away by the DC system when it is connected to the port.

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post #5 of 22 (permalink) Old 05-09-2013, 02:22 PM
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Sorry Jerry, I misunderstood what you were getting at. I have a Unisaw and it is no better than your machine. I haven't heard of one that is good. I have a 4" port on the cabinet and I still have to open the door from time to time and sweep it out.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #6 of 22 (permalink) Old 05-09-2013, 04:41 PM Thread Starter
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Sorry Jerry, I misunderstood what you were getting at. I have a Unisaw and it is no better than your machine. I haven't heard of one that is good. I have a 4" port on the cabinet and I still have to open the door from time to time and sweep it out.
I guess that the question is, "Is there any Dust Collection Syster That Will Pull All Of The Saw Dust Out Of The Csbinet Of A Table SAW, Or AT LEAST MOST OF IT" ?

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post #7 of 22 (permalink) Old 05-09-2013, 08:03 PM
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I guess that the question is, "Is there any Dust Collection Syster That Will Pull All Of The Saw Dust Out Of The Csbinet Of A Table SAW, Or AT LEAST MOST OF IT" ?

Jerry
Sure there are. But it'll cost you probably a lot more than the saw you're trying to keep clean. Entry level: Oneida Air Systems Pro 1500

The problem isn't your collection system, it's that almost all saws aren't designed for efficient dust collection. The typical approach is the same today as it was 60 years ago, let it fall to the bottom for someone to clean out. Improvements since then have pretty much consisted of welding a port for a 4" hose somewhere near the bottom of the saw in the hope that the customer will have a DC system big enough to pull enough air through the small spaces left open in the saw cabinet to suck the pile up(never mind that such a system would draw more power and cost more than 2-4 of the saws themselves). Now they can advertise that their saw has "built-in dust collection" and sell it to you for a much higher price than it cost them to weld on the port that doesn't do anything but make you feel better about spending the extra money.

Call me a cynic, I'm used to it.

If you can, try setting up a partition in the saw below the mechanicals with a dust port in the center that you can connect to. Don't let that dust fall down to the floor, catch it while it's still airborne. Cut some holes in the side of the cabinet so you can get airflow(you can't pull more air out than can come in) to the collector.

Personal experience: I had a Bosch portable saw(4100) mounted on a custom cabinet with a compartment under the saw and a 4" port at the rear. The Bosch has a "dust collection shroud" around the blade with a 2-1/2" outlet. I ran the same Rockler DC you have on the 4" port, a Festool vac on the 2-1/2 port and the cabinet would still fill up with dust in a few shop sessions.

I replaced it with a Sawstop contractor saw not long ago, hooked up their shroud to the DustRight collector and haven't paid any attention to it since. Haven't had it long but I've used it to rip up the material for a workbench, a tool cabinet for below the bench and a couple of miscellaneous small jobs. Your post made me curious so I just went out to check on how much sawdust had accumulated below the saw. Here's a photo:



Now that may seem like a lot of accumulation to you but here's what I made with that byproduct:





The pine for the bench was planed to 3" for the legs and 2-1/4 for the stretchers, stock was 10" wide. The maple was planed to 1-3/4" and ripped from 8" stock. The birch ply for the cabinet was ripped and crosscut on the saw. That's a fair amount of ripping in my book.... Oh, forgot to mention, the dados in the ply were cut on the saw too.

All with the very same dust collector you're using with the add-on 5-micron bag.

So maybe you should work on your saw...

HTH,
Bill

Last edited by billg71; 05-09-2013 at 08:11 PM.
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post #8 of 22 (permalink) Old 05-09-2013, 08:35 PM
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Really like your bench, Bill. I agree on the tablesaw dust collection. Although what collects below doesn't bother me much, easy enough to clean up. It's the stuff the blade throws everywhere topside, that bothers me. I am gonna build a guard with a DC port one of these days!

PS... Cynical? Not me! Well maybe just a little!

I have found that hand tools are the best choice when I want to make mistakes at a slower rate of speed.

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post #9 of 22 (permalink) Old 05-09-2013, 09:32 PM
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Really like your bench, Bill. I agree on the tablesaw dust collection. Although what collects below doesn't bother me much, easy enough to clean up. It's the stuff the blade throws everywhere topside, that bothers me. I am gonna build a guard with a DC port one of these days!

PS... Cynical? Not me! Well maybe just a little!
Thanks, Duane. It's almost done now, skirt and vises installed, just need to drill some dog holes. I call it the "Anti-Roubo".

Already cluttered up:



Back on topic, I got the dust collection blade guard with the saw and it works great! I hook it up to the Fein and it catches just about all of the crap that used to hit me in the face. I've ripped 3/4 MDF and found absolutely no dust on the table.

It just shows that effective DC with a table saw can be done if the manufacturer is willing to do the research and implementation. If someone had told me a year ago I'd be dropping $2K on a contractor saw I'd have called them crazy but now that I have I'm more than satisfied with the results. I did a lot of research, it's probably the stoutest-built contractor saw available, the dust collection actually works and it also has the safety system, God forbid I ever need it. No regrets.

Best,
Bill
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post #10 of 22 (permalink) Old 05-09-2013, 10:04 PM Thread Starter
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I deleted the content of this post due to it somehow got out of order in the thread, it was my fault, am trying to clear the thread up.

Jerry

Last edited by Jerry Bowen; 05-10-2013 at 09:01 PM. Reason: threadd got mixed up
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