Great video a theory of why the direction of airflow was the opposite of your assumption. your in the northern hemisphere so i believe u got over ruled by the illustrious " toilet bowl effect"
I've watched over a hundred videos on cyclone dust separators, and yours is by far the best in every way, except one point, a close up of the fine dust the filter media caught. But, that is another issue, as that media should be a high HEPA rating to be effective.
Hi, thanks for the vid,couple of questions,is the length of the cone and diameter important ?,Does the side pipe ie the one sucking up the dust from the source have to be close to and above the end of the downward facing pipe, i assume they cant be too close together or the dust would just jump the gap,Had any problems since making your video.
@fergawdsache Not sure about the length or diameter, I think any cone will do, I believe the vacuum source pipe (top) should extend below the dust intake pipe (side) to generate the cyclone effect. I am still using the one in the video and have not had any issues with it so far. I do have the parts for a new one that I may make an 'instructable' out of, but I have not got around to to.
@fergawdsache I believe the dimensions are reasonably crucial. The key is to make a design that is proportioned correctly so that the 'turn around' point of the air, is just right -so the dust is directed into the collecting chamber and not sucked up. Almost any cyclone will be quite good at separating off the bigger particles -it is the nasty invisible, fine dust that is worst for us. So it makes sense to design a cyclone to deal with this stuff. Step-by-step build on my website if interested.
@fergawdsache I believe the dimensions are reasonably crucial. The key is to make a design that is proportioned correctly so that the 'turn around' point of the air, is just right -so the dust is directed into the collecting chamber and not sucked up. Almost any cyclone will be quite good at separating off the bigger particles -it is the nasty invisible, fine dust that is worst for us. So it makes sense to design a cyclone to deal with this stuff. Step-by-step build on my website if interested
@FloweringElbow These aren't meant for fine filtration - it's a dust separator. It gets rid of the big stuff so the vacuum can get rid of the fine stuff (which doesn't clog it as fast). You still need a filter on the exhaust side, which is why it's hooked up to a shop vac (which has a huge filter inside it). The shop vac bottom you see in the video looks like it is only used for dust collection and he has another actual vacuum nearby. Most people use a 5 gallon bucket for that purpose.
Does the cyclone reduce suction and would it work if you conected up a bin liner or somthing to collect the dust rather than a dust can because my current dust can fills way to quick and a dust bag would give me a lot more space.
@TeenWoodworker Yes, I believe there is some loss of suction, maybe 10% or so. I do not think it would work with a bag (I could be wrong), but you can use a much larger container for you dust bucket.
I suppose I could do something like that, there is a video of a guy who made one using 4 plastic soda bottles. It catches most of the dust, I end up with a very fine layer of duct on the cloth filter in the shop vac after running 2 to 3 hours, as compared to clogging the filter in about 15 minutes without it.
@derekradac27 Hi it realy needs a cone as the air goes round the cone the saw dust is heavier and gravity pulls it down , the air being lighter goes a round the outside and then up the inside of the outlet hose conneced to the vacuum,
Great video a theory of why the direction of airflow was the opposite of your assumption. your in the northern hemisphere so i believe u got over ruled by the illustrious " toilet bowl effect"
1mopho 2 months ago
I've watched over a hundred videos on cyclone dust separators, and yours is by far the best in every way, except one point, a close up of the fine dust the filter media caught. But, that is another issue, as that media should be a high HEPA rating to be effective.
Nice job!
claudius2u 3 months ago
Hot glue or silicone will seal the fine gaps.
MrLeonard55 7 months ago
You have it made ,,, for pennies on the dollar !!! Well done !
cycloneweaver 1 year ago
Hi, thanks for the vid,couple of questions,is the length of the cone and diameter important ?,Does the side pipe ie the one sucking up the dust from the source have to be close to and above the end of the downward facing pipe, i assume they cant be too close together or the dust would just jump the gap,Had any problems since making your video.
thanks in advance
fergawdsache 1 year ago
@fergawdsache Not sure about the length or diameter, I think any cone will do, I believe the vacuum source pipe (top) should extend below the dust intake pipe (side) to generate the cyclone effect. I am still using the one in the video and have not had any issues with it so far. I do have the parts for a new one that I may make an 'instructable' out of, but I have not got around to to.
grumpygeek 1 year ago
@grumpygeek i think, the rule is the longer, the better
joek0617 3 months ago
@fergawdsache I believe the dimensions are reasonably crucial. The key is to make a design that is proportioned correctly so that the 'turn around' point of the air, is just right -so the dust is directed into the collecting chamber and not sucked up. Almost any cyclone will be quite good at separating off the bigger particles -it is the nasty invisible, fine dust that is worst for us. So it makes sense to design a cyclone to deal with this stuff. Step-by-step build on my website if interested.
FloweringElbow 1 year ago
@FloweringElbow Yes i am interested. whats your web address ?.
fergawdsache 1 year ago
@fergawdsache floweringelbow[dot]co[dot]uk
(replace dotst with actual . )
There is a see-through cyclone build on the project pages.
FloweringElbow 1 year ago
@fergawdsache I believe the dimensions are reasonably crucial. The key is to make a design that is proportioned correctly so that the 'turn around' point of the air, is just right -so the dust is directed into the collecting chamber and not sucked up. Almost any cyclone will be quite good at separating off the bigger particles -it is the nasty invisible, fine dust that is worst for us. So it makes sense to design a cyclone to deal with this stuff. Step-by-step build on my website if interested
FloweringElbow 1 year ago
@FloweringElbow These aren't meant for fine filtration - it's a dust separator. It gets rid of the big stuff so the vacuum can get rid of the fine stuff (which doesn't clog it as fast). You still need a filter on the exhaust side, which is why it's hooked up to a shop vac (which has a huge filter inside it). The shop vac bottom you see in the video looks like it is only used for dust collection and he has another actual vacuum nearby. Most people use a 5 gallon bucket for that purpose.
dipstickewew 1 year ago
Does the cyclone reduce suction and would it work if you conected up a bin liner or somthing to collect the dust rather than a dust can because my current dust can fills way to quick and a dust bag would give me a lot more space.
Thanks, Alex.
TeenWoodworker 2 years ago
@TeenWoodworker Yes, I believe there is some loss of suction, maybe 10% or so. I do not think it would work with a bag (I could be wrong), but you can use a much larger container for you dust bucket.
grumpygeek 2 years ago
I suppose I could do something like that, there is a video of a guy who made one using 4 plastic soda bottles. It catches most of the dust, I end up with a very fine layer of duct on the cloth filter in the shop vac after running 2 to 3 hours, as compared to clogging the filter in about 15 minutes without it.
grumpygeek 2 years ago
and also does it have to be in shape of a cone ? or could it be a cylinder? (the top where the hoses go in)
derekradac27 2 years ago
I think a cylinder would work, but I think the funnel speed up the air as it gets to the bottom.
grumpygeek 2 years ago
@derekradac27 Hi it realy needs a cone as the air goes round the cone the saw dust is heavier and gravity pulls it down , the air being lighter goes a round the outside and then up the inside of the outlet hose conneced to the vacuum,
Graeme.
bogsdolics 1 month ago
I have 2 questions 1 do you think you can make a multi cyclone? and 2 does this filter put everything or just dust? like dog hair an other big stuff
derekradac27 2 years ago