Dust Collection - Machinery Connections

**bitingmidge** · 1st September 2004, 04:22 PM

Originally Posted by vsquizz

Could actually save you some dough on ducting having the two 1200's instaed of one 3hp. Only cyclones I have had are industrial sized ones but in reading all the threads on this it seems your better off with the cyclone??.

I'd like to open up a bit of discussion on this one.... I first got all excited about cyclones when the Wood Magazine (or whatever it was) plans hit the streets four or five years ago. Then read Bill P's site (when it was more or less one page!!) and got even more convinced.

Then I found the pleated filters and realised they were pretty darned good, in fact the cyclone is only as good as the filter it has connected.

Ducting:
I think there are definite advantages to having machines connected permanently, the least of them being that I won't be tempted not to bother moving the DC for a small job...three cuts on the TS and it doesn't seem worth the effort. Smaller machines like belt sander and drill press will also be more inclined to be connected if all I have to do is throw a switch and open a gate.

As for the cyclone VS Pleated filter:
I have not seen any evidence which tells me that I will remove MORE dust with a cyclone, the filter will filter down to whatever size particle it can, and that is it. It is easy to keep clean, although the bag/filter connection is a bit crude and there is always a bit of leakage at emptying time.

What a cyclone will do, (in my view) is provide a much easier job for the filter, alleviating the need to clean it as often (maybe at all), and it will also provide a separator so that things won't hit the fan so often!!

Whether I actually go to effort of constructing a cyclone will depend on:
1) whether I actually get the ducting finished

2) whether the 1200 machine sucks hard enough to power it all at the end of the day
3)whether the gain is likely to be enough to justify the additional effort/expense.

Currently the mobile DC does about 80% of what I think the ducted system will do, so on today's prices the ducting is a 100% increase in cost for the additional 20% benefit.

I expect the cyclone will be a lesser cost, but would be interested to hear from those that have them completed, what further benefit can be expected.

Cheers,

P

**Grunt** · 1st September 2004, 08:03 PM

I just went out today and bought a few more wye's and elbows for my ducting that I'm starting this weekend. I've got two questions.

1. What have people (I use the word loosely) done to attach the ducting to the rafters?
2. I've cut a few bits of the 6" PVC and found it a little tricky to get a good straight cut. I don't have vice or similar to hold it down and I've had to use a hand saw to cut it. I'm alergic to hand saws. What have you lot done to cut it?

Thanks
Grunt

**vsquizz** · 1st September 2004, 08:10 PM

Make a pine V block Grunt and whack a quik grip clamp over the top. I often use the metal cut off saw in the shed (like CMS) but pvc everywhere. Only way to cut by hand is to mark out first.

Cheers

**ozwinner** · 1st September 2004, 08:31 PM

Originally Posted by Grunt

I just went out today and bought a few more wye's and elbows for my ducting that I'm starting this weekend. I've got two questions.

1. What have people (I use the word loosely) done to attach the ducting to the rafters?
2. I've cut a few bits of the 6" PVC and found it a little tricky to get a good straight cut. I don't have vice or similar to hold it down and I've had to use a hand saw to cut it. I'm alergic to hand saws. What have you lot done to cut it?

Thanks
Grunt

1. Tape, hence the phrase, duct tape.
2. I just give it a nasty stare, Ive been told its pretty nasty.

Al :eek:

**bitingmidge** · 1st September 2004, 09:17 PM

The nasty stare is ok for a while, but the pipe soon gets used to it!

1) I have a trussed roof, so have run everything above the bottom chord, it just sits there utilising the wonders of gravity. When I have a dropper I have either extended it to the floor and finished it with a floor sweep so it is self supporting (see pic.) or it's just hanging waiting for me to work it out! (see pic 2) Brackets are cut out of pine studs, curved to match pipe diameter, and will have a hole drilled through each side, through which I will thread some baling wire and give it all a bit of a twitch. Don't see any reason why that won't work on a rafter?

2) Not being a big macho plumber, (and it pays to have a neat cut for this sort of stuff), here's how I do it!

Get a bit of newspaper, fold it in half to get a thicker edge then wrap it round the pipe till it meets in one line.

Get a Nikko marker, and draw a line along the nice straight edge.

You will now have a very straight line all the way round the pipe.

Stare at it for two or three days.

If it hasn't fallen in two along the line by then it probably won't, so grab a hacksaw with the biggest teeth you can find, and start a cut along the line.

When the cut is about 100mm long, start rotating the pipe so the saw is only cutting on one side and follow the line around.

You will be amazed at how little time it takes, and how puffed you get doing it!! Actually you will be amazed at how tidy your cut is and will want to make 100 more, which is rather fortuitous, because it means that you will only be about 200 cuts short of finishing the job when you get sick of it!

Even with so much done, I'm not prepared to challenge you to a race!!

Cheers,

P

**echnidna** · 1st September 2004, 10:02 PM

You can cut new pvc pipe with an ordinary builders circular saw. just dont feed it fast.

**Cliff Rogers** · 2nd September 2004, 01:52 PM

Originally Posted by vsquizz

Cliff, my efforts where a bit rough,

Yeah well, I cheated, I used the bable fish on the Alta Vista tool bar.

**Cliff Rogers** · 2nd September 2004, 02:11 PM

Originally Posted by bitingmidge

... Get a bit of newspaper, fold it in half to get a thicker edge then wrap it round the pipe till it meets in one line.

I was going to give you a greenie for this neat idea but it seems that I
have already given you a greenie recently so you'll have to wait.

BTW, the heart foundation would be proud of your work with the hack saw...
If you can keep it up for at least 20mins each day, you'll live longer than me...

**silentC** · 2nd September 2004, 02:14 PM

Originally Posted by Cliff Rogers

I was going to give you a greenie for this neat idea but it seems that I
have already given you a greenie recently so you'll have to wait.

BTW, the heart foundation would be proud of your work with the hack saw...
If you can keep it up for at least 20mins each day, you'll live longer than me...

Jeez, I thought everyone knew about that trick. I learned it 25 years ago watching Dean on the Curiosity Show.

**Cliff Rogers** · 2nd September 2004, 02:18 PM

Originally Posted by bitingmidge

Ducting:
I think there are definite advantages to having machines connected permanently...

I agree

Originally Posted by bitingmidge

As for the cyclone VS Pleated filter:
I have not seen any evidence which tells me that I will remove MORE dust with a cyclone,

I agree with this too.

Originally Posted by bitingmidge

What a cyclone will do, (in my view) is provide a much easier job for the filter, alleviating the need to clean it as often (maybe at all), and it will also provide a separator so that things won't hit the fan so often!!

& I agree with this too.

Agreeable today aren't I?

**bitingmidge** · 2nd September 2004, 02:21 PM

Originally Posted by Cliff Rogers

If you can keep it up for at least 20mins each day, you'll live longer than me...

:eek: :eek: :eek: I already have!!!!

Cheers,

P

**vsquizz** · 2nd September 2004, 02:27 PM

Originally Posted by Cliff Rogers

Yeah well, I cheated, I used the bable fish on the Alta Vista tool bar.

Well for all my limited Talent I may well have been wishing you a case of Saigon Rose for Chrissy:eek: .

Capisca

Cheers

**Cliff Rogers** · 2nd September 2004, 02:49 PM

Originally Posted by silentC

.... I learned it 25 years ago watching Dean on the Curiosity Show....

at Age: 9 ???? How? A past life maybe....

**silentC** · 2nd September 2004, 03:15 PM

Originally Posted by Cliff Rogers

at Age: 9 ???? How? A past life maybe....

What are you on about, Cliff?? :confused:

BTW, I've started a collection of discarded flue pipe. It's amazing what people throw out. I picked up 4x4' lengths of 6" gal flue at the tip last weekend for $2. I'm thinking of running an ad in the local paper.

**Cliff Rogers** · 2nd September 2004, 03:19 PM

Originally Posted by silentC

What are you on about, Cliff?? :confused:

Uh-oh.... time warp.... where did those last 30 years go???? :confused:

Thread: Dust Collection - Machinery Connections

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