• Hi all and welcome to TheWoodHaven2 brought into the 21st Century, kicking and screaming! We all have Alasdair to thank for the vast bulk of the heavy lifting to get us here, no more so than me because he's taken away a huge burden of responsibility from my shoulders and brought us to this new shiny home, with all your previous content (hopefully) still intact! Please peruse and feed back. There is still plenty to do, like changing the colour scheme, adding the banner graphic, tweaking the odd setting here and there so I have added a new thread in the 'Technical Issues, Bugs and Feature Requests' forum for you to add any issues you find, any missing settings or just anything you'd like to see added/removed from the feature set that Xenforo offers. We will get to everything over the coming weeks so please be patient, but add anything at all to the thread I mention above and we promise to get to them over the next few days/weeks/months. In the meantime, please enjoy!

Dust Extraction

N

nfcm

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Nov 13, 2014
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Location
New Forest near Romsey, Hampshire
My current dust extractor is an Axminster (it's the similar to the Yorkcleen WV100 http://yorkleen.co.uk/documents/products.php?action=item&iid=6&cat=3&page=1&subcat=Extractors) with a flow rate of around 70 l/sec. It has a small inlet (58mm) when compared to many extractors.

I've just bought a new bandsaw, a Record BS400. I have to say, my decision to go for the BS400 was influenced pretty strongly by some earlier discussions on this forum - thanks to all contributors for that help.

So, I have a question / challenge - my current dust extractor doesn't appear to have enough umph for the BS400. Even cutting small stock the base of the bandsaw gets a lot of dust collecting in it . Having never owned such a mighty machine I don't know how much dust to expect to collect in the body of the saw, but on my old small bandsaw it was hardly any.

I realise the principle is easy - big tube, high flow rate, job done, but I don't have room for a big dual bag extractor. I'm interested to hear peoples experience of medium/large bandsaws coupled with small(isn) extractors that "do the job".
 
There was a really good post on UKW a few years ago from OPJ I think, who made up a shroud from 30ish mm water pipe to fit closely around the underside of the blade housing and attached a vac to that.

Idea being he was collecting close to the source.

Seemed to work very well if I remember correctly. See if you can hunt it out.

Cheers
Mark
 
TBH I think that bandsaws are in the same category as lathes and SCMS saws....next to impossible to collect the dust and/or chippings. When you think about it, where the dust is generated is an awful long way away from where most extraction points are. Also the design of my BS350 (no idea how much it differs from your BS400 but I'm guessing not by very much) ...or any bandsaw as far as I am aware..the bottom guides effectively seal the bottom compartment where most dust extraction ports are.

At least that's my two-pennorth and I must admit that, partly because I use it so infrequently, I never bother connecting up the extraction pipe whenever I use mine.
 
Years ago I made a similar device using a round to square drain pipe adapter for my 352.
The blade runs trough the square section and my cheapo small vac is connected to the round end. It works reasonably well.

Rod
 
Bandsaws are notoriously difficult to extract from. If you are short of space have you considered a twin or even a triple motored extractor such as a camvac? Not cheap, but a lot of suction for the space they take up.

Steve
 
David, I have a twin motor Camvac but not a bandsaw, yet. I am confident, though, that it has more than enough suck to cope with the dust from a bandsaw. The downside is that you will probably need a cyclone or you will be emptying the drum and filters far too often.

If you have not seen it already here is the thread on my extraction/cyclone build.
viewtopic.php?f=26&t=471#p4844
 
RogerS":1msa3pry said:
TBH I think that bandsaws are in the same category as lathes and SCMS saws....next to impossible to collect the dust and/or chippings.
Click to expand...

I'd agree with that :)

I have a 14" jet bandsaw and made an internal shroud to surround the blade between the table and the bottom wheel and extract from there. it is significantly better than the 100mm port at the bottom of the cabinet but sawdust still gets everywhere around the machine.

If I'm doing more than a couple of cuts I connect extraction but for any less I don't bother. it doesn't take long to just vacuum up the dust afterwards in any case.
 
TBH because of the inherent design of bandsaws it doesn't matter what you connect up...they won't suck out any of the dust from where you want them to. I reckon you'd need to connect up the extraction port to the inlet nacelle of a Concorde Olympus engine before you're guaranteed of getting all the dust.

Unless you modify it as has been suggested.
 
Excellent discussion, thanks for the updates.

The BS400 has a pair of welded in plates at 45 degrees to the top and side of the bottom wheel cabinet - top right corner - these are just below the guides under the table. The Record man said to close up the rather large (30mm) gap between the plates with some ply or plastic and that improves extraction. There is a small diameter port right next to this spot.

Reading the various posts I'm going to do the DIY improvement and connect my existing extractor to that and see how it performs. I may well end up making a cowl for below the table as suggested.

Thanks again.
 
Here's some photos of mine

565a8fc3b6f8431bbb28752d83aeab79.jpg


4e4550babce67a5be22835b5dc58d418.jpg


Crude but effective!

Rod
 
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