Dust Extractors

[I.J. CNC Services]

I imagine the problem with that is if there is no paddle or shaker the filter clogs very quickly?

 

[9fingers]

I imagine the problem with that is if there is no paddle or shaker the filter clogs very quickly?

That is where an effective cyclone comes in removing most of the dust before it hits the filter.

Bob

 

[I.J. CNC Services]

Any ideas on how to combat the static build up on home made cyclones?

 

[9fingers]

The body of my cyclone is metal and not deliberately earthed.
I do not notice any static effects. I'm handling mixed waste from the saw, planer and sanding.

The pipework is UPVC and does get a build up of dust on the outside as does the wall/ceiling nearby to the pipe which I assume is due to static.

Bob

 

[Mike H]

I have put a big builders bin with (not even a cyclonic inlet and outlet) lid , as sold by Axminster, between machines and my extractor. I have just added a bend on the inlet inside of the lid, sending the airflow to the side of the bin.

This does really improve things for all operations, and in particular planing such as wide sycamore! No more clogged extractor inlet!

But it would work fine on a downdraft table. My extractor is the Axi ADE1200, 1200 cubic meters per minute, 100mm inlet, less than 1KW.

I have filled the bin 10 times approx over the past few months and there has been no need to change the bag in the extractor, there is not even 6 inches of stuff in it. I just shake the top filter bag fist thing before switching on, if I remember, to improve air flow.

Inside the bin a neat pile of stuff in a swirl always forms, with much of the dust at the bottom.

Mike



8)

 

[frenchie44]

try the Microclene 1200, 1200 cu mtr ph. or the MC3000 @ 3000 cu mtr ph. they go down to well below 0.4 micron. they last for years, reliable and made in UK. my brother has the 1200 in his joinery works for 15 years now, clears the floating dust in a few minutes. London underground use them in their workshops, madame toussards uses them as well.Bt uses them on the cable ships.

 

[ondablade]

A cyclone is not that expensive to set up. I've just has the body (cylinder and cone), the inlet chute, the ramp and the outlet tube for mine fabricated for self assembly by a local ductwork company for about £200 in 18G galvanised steel to the Bill Pentz drawing. (which actually is pretty much a stock fine dust cyclone layout)

It's said (due to less turbulence) to work better than the trash can variety on fine dust.

You can also make it yourself for the price of the material.

The big advantage to getting it made by a properly equipped fab shop is that they can use a CAD package and a plasma/laser CNC cutter to layout and profile the blanks accurately, and can then properly roll the them to be true cylinders and also roll a nice raised and clenched seam on the joint between the cylinder and the cone.

I'll pick mine up sometime next week once they have the other fittings ready, please ask if a photo would help...