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JungleJim

Established Member
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13 Feb 2007
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Location
Potters Bar, Hertfordshire
Hi All,
I need a DC for the table saw, band saw and P/T. I have Festool CTL Midi for the smaller power tools. I don't want to keep moving from machine to machine so am looking for something with enough power that can connect to all at once.

I like the look of the SIP 01954 which has a 3HP motor and could look to doing a cyclone conversion in the future. Would be interested to hear anyone's views on this. It's about £320 which I don't thinks bad at all for something so powerful.
https://www.sipuk.co.uk/sip-01954-dust-collector.html

Are any of you using an DC in the same price bracket that you could either recommend or would steer clear of?

Many thanks

James
 
I am very dubious of any CE that does not give the CFH figure in its description, also I do not know of any bag filter on one of these that will filter down to 1 micron, perhaps SIP have broken to barrier on these machines.

Personally I use one of these: http://www.axminster.co.uk/axminster-ho ... eal-717658 which has a pleated paper filter which by all accounts are more efficient and does filter down to 1 micron.

Mike
 
I have a 3hp collector, essentially the same as the 4 bag SIP one. Mine was made by Lyndhurst Woodworking who seem to be a bit of a Houdini act these past few years. Anyway it works brilliantly and I have it hooked up to a DIY cyclone. It moves a LOT of air.
I have read reviews in the past that a 3hp 2 bag extractor similar to the one you have posted, whilst powerful, gets choked by having only the 2 bags to exhaust the air through. (one if you put a plastic bag on to collect chips) You would need to look into a finer filter as well, I used two filters that are actually designed for a lorry air filter. They filter down to .3 microns and have a large surface area. I think I paid £135 inc postage for two.
 
James

I used that SIP as the basis of my dust collection, sucks like a good 'un. Below is guts of a post I made a few days back to somebody with a similar question...


"My workshop is roughly 3m x 5m so overall a little smaller than yours. I have one of these (I paid a fair bit less than this buying it from CostCo so I'd advise shopping around)

https://www.sipuk.co.uk/sip-01954-dust-collector.html

Which is wall mounted...


...and spiral ducted to my main machines...


Before it was wall mounted I did move it around, but to be honest in a small space this actually proved to be a PITA as there was never the space to put it somewhere that was not in my way. Breaking the machine down also makes it much easier to insert a cyclone into the system, which frankly is IMHO a no brainer. For a 3HP extractor I was advised to go with a bigger cyclone.

In my experience when it comes to extraction bigger is better. The larger the amount of air moved the more efficient the extraction will be, so go for the machine with the best possible airflow. Then use the biggest ducting you can (whether you plumb it in or not), so if you go for the second Axy machine you link to dump the splitter that reduces it from 125mm to 100mm and use 125mm pipe or ducting.

Beware of any claims about airflow and filter efficiency. Manufacturers will test in optimal conditions (I don't blame them for that), so I have heard people say they do not get anything close to the quoted airflow. But I strongly suspect they will, for example, have tested with 125mm and not used the 100mm splitter and will be using the shortest possible lengths of flexible ducting as the corrugated interior interfers with the efficiency of the airflow. On filtration test any assertions about "filtering down to" a particular size of particle, what you want to know is what percentage of a particular size particle will be filtered out, not just the smallest particle that can theoretically be captured.

The top bag on the SiP model I have is useless so I made my own using HEPA filters from an purifier. I used the ones used by this guy (jump to 4:40 if you just want to see the point on filters).

https://m.youtube.com/watch?v=CrAtUVo-47g

He uses two on his 3HP extractor and seems happy, but I was worried about reduced suck so I made a bigger filter box (the big thing on the left in my first picture, only the top half mind as I put some moveable shelves under it) with four of them pre filtered with a double layer of 20mm G4 rated filter media in front of each HEPA filter. I have found no noticeable reduction in suck when hooked up to the filter box, though in fairness I do not have the equipment to measure it scientifically.

Finally, if you do have it in a fixed spot set it up to be remote operated that way you can use it everytime, rather than not bothering because it is to troublesome to keep going over to switch it on."

Hope that helps.

Terry.
 
JungleJim":27omiyyq said:
Thanks for this, thats very useful, do you have a link to where you got your lorry air filters?
thanks

James

I did have the link but unfortunately when I click on it it's no longer active. I know the shop I bought from were called RB industrial.


Sent from my iPhone using Tapatalk
 
Wizard9999":n1tqa7si said:
The top bag on the SiP model I have is useless so I made my own using HEPA filters from an purifier.

He uses two on his 3HP extractor and seems happy, but I was worried about reduced suck so I made a bigger filter box (the big thing on the left in my first picture, only the top half mind as I put some moveable shelves under it) with four of them pre filtered with a double layer of 20mm G4 rated filter media in front of each HEPA filter. I have found no noticeable reduction in suck when hooked up to the filter box, though in fairness I do not have the equipment to measure it scientifically.

Terry.

Would you have a link for the filters?
 

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