Thread: Cyclones Again

Grunt,
I'm going to get my 6" flex from Interlink. They stock it for their vine spraying nebuliser machine - $33/m + GST. I will try to get some small offcuts at reduced price.

Trade Link plumbing supplies have 6m length of 6" PVC for about $48.

It may be an idea to cut rectangular holes in your machines of aprox the same area as your ducting (if you are game!) and make up transitions from them to your 5" or 6" ducting. The thought is quite daunting at first, but that way you avoid the constriction of your air flow through the 4" dust outlet ports. The transitions are nowhere near as difficult to make as you might imagine. I made a practice one with thin sheet metal (waste) and then made the others I used on my cyclone with 0.8mm gal without any dramas (0.6mm gal would have been quite sufficient).

Good Luck!

I said bugger me with a pitch fork.

OK, set me straight if I;m wrong, but, you weren't entirely happy with their quote were you.

Hey Grunt,

Those prices look awfully high to me, I recently bought (from Reece) 6" ducting and accessories in PVC stormwater grade and I reckon I paid around $30.00 for a six inch length of pipe, and about two thirds the price of a Y.

I am guessing that at the irrigation place they were offering you pressure pipe for carrying water, and maybe you have bought sewer fittings which are quite a bit heavier than stormwater.

The prices I paid were trade, and worked out at less than half Bunnies quote. (No I didn't go back for the extra 10%, it wasn't worth the petrol, and Reece delivered for $10.00)

The ducts are all in except for the last two metres to each machine and the DC, but that's the way it's been for a month or so, and no chance of any more progress for a few more at least!

Out of curiosity, what grade PVC are you using?

P

Grunt,

Wouldn’t you be better to keep your four inch lines on you table saw and jointer and step up to a six inch main duct through a ‘Y’ branch? The saw, assuming you have a 10 or 12”, and jointer would each need about 400 cfm flow. An overhead pick-up from the saw guard through a two-inch duct would probably account for a further 150 cfm. A good 3 hp fan would easily process 1,800 cfm or double the requirements of the table saw and jointer.

My approach would be to run a duct to both machines without the necessity of a blast gate to close off either the saw or the jointer. You could locate the blast gate upstream from the ‘Y’ so that it opens both machines simultaneously. I find that jointing and ripping go hand in hand and there is nothing more cumbersome when moving between the two machines than having to flick blast gates from one to the other.

OK, set me straight if I;m wrong, but, you weren't entirely happy with their quote were you.

I just love being ripped off. I'm also in the market for a rain water tank, but there is no way I'd buy it from them.

bitingmidge,

I haven't bought any PVC yet, I was just getting an idea on how much this was all going to cost me. I'll be getting the cheapest I can get a hold of. I'll have to ring around and get some more quotes. I'm pretty sure that the $22 a metre for the PVC was storm water grade. At least that is what I asked for, however, thinking about it the guy who served me only started working there that week.

Grunt

Grunt,

Yes, the PVC/Flex piping does add up. As Midge mentions, as for the Trade price - massive price difference.

Regarding the table saw ducting, I agree with Red Neck. I have a 4" on the Cabinet and a 4" on the clear overhead guard I made. These both go to a 6-4-4 'Y' and I have a 4" gate on the flex that goes to guard so that I can shut it off when using the Dado blades or the Tenon jig (i.e. the guard is removed).

I reckon I paid around $30.00 for a six inch length of pipe

Wooops!!!

I meant six METRE length of pipe!!

Wayne,

I am sort of half into building a guard like yours.

I read on one of your posts that you have to partially shut down the blade guard duct sometimes to stop it sucking down onto the work. Would you use a 4" pipe if you were doing it again?

On the other hand I often cut small bits which will be difficult to handle under the guard, so am thinking that it may well be still extracting from a foot in the air on those occasions....is that feasible (using the appropriate jigs and things 'cos I love my fingers) or do you just shut it down.

Cheers

P

bitingmidge,

Yes, I do have a 4" plastic shut off on the flex going to the top of the Guard (mentioned that in the previous post). I did originally put it in so as to give me control of the air flow but I have found that I have it all the way open when sawing.

However, when using my Tenon Jig (and also the Dado set if required), the Guard has to be removed as it would foul the jig. In these cases, I shut that gate to max the air flow in the Cabinet of the saw. Works a treat. And I would not change from the 4".

Cheers,

btw I thought you were using gold plated PVC at that price.. lmao

On Bill Pentz' site he suggested that it was significantly more efficient to have 6" ports on all the tools but if you lot say it works fine, I might give it a go first. It does solve a few problems like having a 6" collection port on the table saw guard.

Red Neck, did you get a 3HP unit? If so, where and how much?


Grunt

A couple of suppliers I've used for the odd plumbing item: No connection with any of these except as a customer. Cheaper than Bunnies.

in Melbourne S/E is Gottleibs ..
1083 Dandenong Rd, Malvern East
No service, but cheaper prices. Credit Cards attract a fee, Cash, cheque or EFTPOS OK

Cash WE ... used to have a warehouse in the backwaters of Clayton that was most helpful but it is now closed. I notice in the Yellow pages a number of other branches.

An observation: 100mm (4") PVC tends to be Sewer pipe, 90 mm is storm water. Does anyone know what happens in the larger sizes .. ie is 150mm sewer and 140mm storwater?????

my 2 bits worth

Red Neck, did you get a 3HP unit? If so, where and how much?

Grunt,

I have a 2hp Carbatec model CT-2042. Supposedly 1700 CFM and fitted with a needlefelt bag rated at 5 microns. Handles a the saw and jointer OK as well as a few other machines.

Also have a 1 HP Delta rated at about 600 CFM that is fine for the lathe (sanding), drop mitre saw, 12 inch thicknesser etc. It gets wheeled around the shed and runs off a short length of 4 inch duct. This is more convenient than plumbing in yards of ducting, blast gates and the like for the miscellaneous equipment. Also sucks up the shavings under the lathe! Top bag is not so good though - about 30 microns. Particularly noticeable when sanding.

I bought 100 mm ( 4") PVC stormwater ( not sewer ) pipe for $54 per length and the Y's were less than $9 each. They also had 150 mm stormwater. The 90 mm seems to be a lighter grade and seems to be used above ground, from what I understood from my supplier. The 100 mm has 'storm water ' printed on it.Fernigoughs Makit Hardware in Perth. The 100 mm x 45 Deg bends were less than $9 each.

Cya
Joe

I was dudded!!!
:eek:

After being quoted $34.30 per length, I have found the receipt and actually I paid $43.43 for the 150 dia 6m stormwater pipe, $12.00 each for the junctions, and $8.21 each for 45° bends (all 150 dia).

See what happens when you just trust the nice young girlie behind the counter?

Ducting will have cost a tad over $400 without any flex or gates built yet, and I still have to buy a couple of rolls of duct tape. I guess a collector system doesn't come under the category of cheap accessory....worth every cent though when it is done....I hope!

Cheers,

P

Another thing to look for is 'downgraded' pipe. Irrigation firms and plumbers often have this. It may be pipe that has been left on a job site and become discoloured or been damaged or it has been at the top of a stack and suffered likewise. Remember, we are dealing with suction, a split in a pipe can be covered with a piece of duct tape.
Cheers