Thread: WIP Cyclone - filters

Al,

I reckon the easiest if not cheapest would be to use a standard pleated filter kit http://gpwoodturning.yahoostore.com...._id=1107219952

I assume you are using a standard dusty to power the thing? in which case you already have the necessary fittings to adapt it. I reckon you could even use the standard plastic bag under it (maybe 1/3 the depth) just to pick up any leftovers.

I'd like to see what alternatives there are, and if they really work out any differently by the time you make the bits.

Cheers,

P

Originally Posted by Al B

I am in the process of building a Bill Pentz Cyclone and would like to get the filters that go after the cyclone. Can anybody tell me wheres the best place to get them from. Any information on the filters would be appreciated.

For more details on the Cyclone that I am building http://www.woodworkforums.ubeaut.com...ad.php?t=31169

The square meterage of the filter is very important depending on the size of the motor. If the filter area is too small the motor runs at a high wattage and could over time burn out the motor. This filter will work but you might require 2 if you are using a 3HP motor.

Industrial Air Filters & Hardware Product Attributes
Current Brand: Donaldson Torit
Former Brand: Torit
Media Type: Cellulose
Flame Retardant: Yes
Filter Area (sq ft): 226
Filter Area (sq m): 21.0
Pleat Height (inches): 2.0
Pleat Height (mm): 50.8
Outer Diameter (inches): 12.75
Outer Diameter (mm): 323.9
Length (inches): 26
Length (mm): 660.4
Temperature Limit (F): 150
Temperature Limit (C): 65
Gasket Material: Urethane
End Cap Material: Galvanized Steel
Shape: Round

Sorry I forgot the filter number ULTRA-WEB FR CARTRIDGE P527080-461-436
or 262-5015. These cost $80 in the USA and £130 in the UK - There is a supplier of filters on the Bill Pentz website that sell in the USA for $60-70USA.

Dont use the filters that come with most dust extractors as the do not filter down to .5 micro (the dangerous dust) and they lack the square meterage.

The triot stuff is commonly available in the us but you may find it difficult to get or over priced elsewhere.
In australia it is far cheaper to go to a filter specalist and have one made.

Using one of the stock pleated filters designed for the dust extractors would be fine & probaly cheaper.

You will have to do some research in the UK to sus the deal over there.

cheers

Thank you all for your replys.
I found this place and gave them a call, http://www.donaldsonfilters.com.au/u...20Brochure.pdf
Prices Quoted over the phone
13.5" x 26" Torit Filter cost $285 each :eek: He did have a cheaper version @ $225 each.

Figure out how many CFM you are going to push into the filter and buy a truck one big enough for the job., Donaldson should have the specs. There are companies around that also wash them which is a saving also.

I remember reading an old post about someone who built their own airfilter, they got the materials from http://www.acefilters.com.au/


joez

Originally Posted by Al B

Thank you all for your replys.
I found this place and gave them a call, http://www.donaldsonfilters.com.au/u...20Brochure.pdf
Prices Quoted over the phone
13.5" x 26" Torit Filter cost $285 each :eek: He did have a cheaper version @ $225 each.

Been there done that, so out of curiosity why reinvent the wheel? Why not use the purpose-built one ?

P

Why did I think you were in the UK?????


In Australia forget about any of the sources recommended on the bill penz site.
The specialised filters mentioned are realy expensive here in the brands mentioned.
I priced truck air cleaners & they aren't real cheap let me tell you and the truckies aren't going to chuck away a perfectly good filter in this country let me tell you... no second hand truck filters.

I looked into this at length some time ago
heres is the go

either use a pleated cartridge filter intended for use with a standard dust extractor, the cheapest is the cheap jet but the micron size isn't as fine as some.

or got to a company such as filtration fabrics (who make a lot of the filters sold in the wood working stores) and order one to specification it will be way cheaper than buying from either donaldson or any of the US related fancy filter stockists.

or down market and coarser filtration
Buy brand new toyota land cruser filters and stack um up.

cheers

Originally Posted by soundman

Why did I think you were in the UK?????



I priced truck air cleaners


Buy brand new toyota land cruser filters and stack um up.

cheers

The truck air filters do not filter to .5micro - the bad dust from MDF and other particle board. Its better to pay more and save your lungs
Barry

With regard to filters, I have found it difficult to compare micron size specifications with the European standard of 0.2mg of dust per m3 of air exhausted. Does anyone have any idea what the European standard specification is in real "micron size" terms?

Also, Pentz goes on about the inadequacy of filters which get some but not all of the dust. Does anyone know whether any of the suggestions above (for filters) actually get near 100% of the dust which is, say 0.5 microns and larger...

On a similar note, I have long wanted to get myself a room air filtration system (e.g. Jet), because I work in my garage with only wooden floors separating my shop from the rest of my house. I have often suspected that dust is getting through to the bedrooms. But the Jet systems, for example, claim to only get 85% of 1 micron dust. Is this good enough? I want to be responsible to my lungs and I am prepared to spend some money on dust safety. But I don't want to spend more than I need to.

Thanks for the info. Regards

Lucky,

There's a lot of stuff out there that will scare you to bits. Without sounding like an alarmist, my father had chronic asthma and I have am also highly sensitive to dust of many descriptions, not just wood dust.

I have a Jet pleated filter on the DC, which according to the literature takes out most stuff to 2 microns, and a Jet room filter which is located a few metres from the DC.

I have never experienced sensitivity when running (or after running) these machines, and unscientifically conclude that the amount of dust remaining in the atmosphere (15% less than one micron) is probably what is already floating round in the air everywhere.

For me that means no coughs, no coloured snot (sorry!), no sore throat, no sniffles, and that is a fair indicator that not enough dust floats around to do any harm..

Certainly the amount of dust which settles after a really big day, is negligable, but after a time the settled dust does build up, indicating that it is still floating somewhere. It looks about the same as the top of our fridge!

I also think that I get more dust floating round after using hand saws and sandpaper than using any of my machines "plugged in". (I usually wear a respirator when using sandpaper or the router)

I don't know if that helps at all, but for me the standard pleated filter/aircleaner combination works well.

After building a couple of boats in a less disciplined way, the filter was often not turned on for long periods while sanding and hand tools happened, (bugger!), I have a large dust build-up even in the roof trusses, and I'm going to don my mask and vacuum it out on the weekend, as it takes very little disturbance to bring on hay fever. Again a sign that all the other stuff works!

P

I am well aware that automotive filters have much bigger holes in them that high quality pleated paper filters but so would anybody that has read the bill penz site.

Any filter is better than none..... the other option is to discharge outside.... you are still ahead of a standard bag.... but anybody that had read the bill penz site would know that too.


cheers

I wonder if a combined system may be best. Use a filter that is not to fine (2 Microns) and house this in a dust proof housing. Vent this housing to the outdoors and you have caught 99% of the dust with the really fine stuff being dumped to the atmosphere and as it is so fine will just float away. We generally have no need to filter the air within the workshop like they do overseas as we do not have heated workshops. Our greatest concern in most cases is not to dump dust all over the neighbour's house and washing line.