Dust collection

[Delbert Freeman]

Currently, I have a HF 1200CMF blower(off their larger dust collector) set up to draw through a cyclone and discharge outside the building into a small collection building. The draw of this unit is not bad, but I have 7 drops in the shop and would like to upgrade the airflow. The tubing in the shop is 4" PVC with flex hose going to each drop and metal blast gates from Lee Valley.

Now for the question: If I got another blower, built a manifold and had both blowers drawing out of the manifold, would my CFM be substantially increased? In addition, would the 4" pipe handle the increase or would I have to upgrade to 6"?

The reason I as is that American Woodworker has a coupon from HF with the whole dust collector at $139.95.

Thanks

Deb

[Larry Jaques]

On Sun, 14 Mar 2010 08:19:35 -0500, the infamous Delbert Freeman scrawled the following:

I'd run straight pipe to the drops with 45-degree junctions, limiting the flex hose and any 90-degree corners as much as possible.

And I'd set up the second sucker to half (or proper proportion of) the machines and have safer, more positive results than I'd get from a joining of the two systems.

With an outlet strip connected to each of two current sensors, turning on any machine would turn on the DC for that system.

For a join, I'd probably want 5" or 6" runs.

You never said how many machines you'd be running at the same time, but if you had two or more going concurrently, put them on different sucker systems.

-- No matter how cynical you are, it is impossible to keep up. --Lily Tomlin

[Ed Pawlowski]

If I read this correctly, you want one manifold and two DC's drawing from it. What you first have to do is find a way to keep one DC from sucking the opposite way through the other DC. I can see balance problems at times depending on what gates are open. IMO, you'd do better running two smaller systems rather than try to make a booster either series or parallel. In any case, larger pipe would be needed to do justice to the system.

[Phisherman]

With two DCs, there is going to be a pull against each other. Dont think it is practical either. But as Ed mentioned, have two separate systems with shorter runs and implement anything that decreases turbulance.

I still move a short flex hose from one machine to another with a 1.5 HP PennState DC on wheels, just not powerful enough for a network of piping but does an effective job on one machine. My DC "upgrade" was the addition of a LongRanger remote 220v relay.

[krw]

I concur. Playing dueling DCs is not recommended. Rather than spending money on another DC, it would be better to go to 6" pipe for the main run. 6"x4" Ys aren't cheap, though.

I have their 2HP collector. I'm debating whether to put pipe around the new shop or just do what you're doing.

Love mine. I have one remote hanging from a magnetic hook stuck to the bottom of my saw and another I carry around for other tools.

[Stephen Quinn]

Larry

Adapters/Blast gates available at Rockler.

?page=22123CYASteve

[Larry]

"Stephen Quinn" wrote in news:iLA4r.3908$ [e-mail]:

front of the isle containing these adapters for 30 minutes and it seemed there were no 2 adapters that fit together.

After I posted the original message I stumbled onto the following. Anyone have any experience with this?

[Larry]

Puckdropper wrote in news:4f52defa$0$16631$c3e8da3$ [e-mail]:

That's kinda what I want but not interested in building it and would rather buy something that works. When you consider the cost of gas and the number of trips to the hardware store, not to mention the wasted time, if I can buy something for less than $50 I've probably saved money.

[Ed Pawlowski]

$50 is about what I spent to make a simple system with 4" PVC pipe, a few fittings and flex hose. You do it once and done. The pipe for mine just hangs from the rafters. You can do it with one trip to the hardware store and avoid years of frustration that you now have.

[John Grossbohlin]

I've been looking into this issues too... I've got one of these

but it doesn't fit the dust port on my bandsaw or thickness planer (which are straight steel, not tapered) nor does it stay on the dust port for the jointer (tapered plastic). It works fine on the table saw port (steel) and on the CMS station I built with stock plastic fittings...

I came across this one

which may work. However, the one on-line review isn't very favorable. Don't know if it is an isolated problem or the norm.

John

[Larry Jaques]

grounding?

I finally got more blast gates and put hoses to each machine, with a separate movable hose for the floor drop and mortise machine top suck.

-- It is characteristic of all deep human problems that they are not to be approached without some humor and some bewilderment. -- Freeman Dyson

[Doug Miller]

"John Grossbohlin" wrote in news:R8GdnZ6GMrZcds_SnZ2dnUVZ [e-mail]:

Waaaay overkill. Here's my dollar and a quarter 4" quick-disconnect:

[Larry]

"John Grossbohlin" wrote in news:R8GdnZ6GMrZcds_SnZ2dnUVZ [e-mail]:

Snipped...

The problem is there is no standard. It falls off of one machine and fits too tight on another. Seems like every manufacturer does what they feel like.

At $40 each with a blast gate I don't need I'll pass. The connection idea is exactly right though.

Larry

[Larry]

Doug Miller wrote in news:XnsA00C5DA03E203dougmilmaccom@88.198.244.100:

When that $1.25 hose clamp blows off of your DW735 planer and covers your wife with planer shavings you'll be looking for another solution too. ;o}

Larry

[Larry]

Larry Jaques wrote in

Not even going there. Troll....

[John Grossbohlin]

Why? ;~)

[Larry Jaques]

Oops, you misattributed that to me. I only replied, teasing about the grounding notice.

-- It is characteristic of all deep human problems that they are not to be approached without some humor and some bewilderment. -- Freeman Dyson

[Larry]

Larry Jaques wrote in news: [e-mail]:

I'm pretty damn sure nothing was misattributed. I've seen those "grounding" threads go on for weeks. I sure as hell ain't gonna be the one that starts another one of them...

Larry

[Doug Miller]

Larry wrote in news:XnsA00C5A626E99Dnone@127.0.0.1:

Guess again. I have a DW735, and that's the clamp that I use to hold the hose onto it. In the seven years or so that I've been using it, it's never come loose even once.

You came here asking us to tell you what works for us -- that's what works for me. Of course, if you don't believe that, you're perfectly free to go spend fifty bucks on some other solution if you want to. It's your money.

[John Grossbohlin]

Doug,

Isn't part of the fun to spend other people's money? ;~)