Drum Sander 16/32 24/48 Extractor Requirements Air flow /h

[Tetsuaiga]

I'm hoping to buy a drum sander soon and will also want to upgrade my dust extractor.

I've tried to find out but cant see, what kind of flow rate would I need for say a jet 16 or 24 drum sander.

There's a fairly quiet extractor on axminster that's 1000m3/hour, is thast enough or do I need more powerful unit? I'd like to vent my extractor to outdoors also.

 

[wcndave]

The dust from a drum sander will be quite fine. Therefore airflow won't be that important, assuming you don't want to use this for anything else, other than perhaps hand tools.

What will be important is you get one with good multi-stage fine filtration. Some have a cartridge that goes inside, in addition to the bag, which also stops the motor clogging up.

once you have those elements, almost any extractor from the likes of axminster will do.

 

[Tetsuaiga]

Thanks =)

By mutli-stage do you mean like cyclone seperation type thing?

I think i'd probably vent outside and at a later date also get the fine filtration just for the sake of other people in the area.

 

[wcndave]

most vacs will be tricky to vent outside, and in winter you will be pushing all your warm air outside.

This is a chip extractor: http://static.axminster.co.uk/media/cat ... 264_xl.jpg
It is intended to capture chips (not dust) from machines such as planers, thicknessers and the like.
It's not intended to capture fine dust, and has higher airflow to move bigger pieces (these are generalizations)

This is a vacuum extractor: http://www.axminster.co.uk/numatic-nv75 ... -extractor
In the description you see it has 3 stage filtration down to 0.5 microns.

In this case the stages are bag + motor cover + something else, not sure what in this case...
Lots come with these cartridges, which can also be fitted to some chip extractors http://www.axminster.co.uk/catalogsearc ... +cartridge

The Numatic for example can be improved further with one of these:
http://www.axminster.co.uk/numatic-hepa ... 750-wmd750

You're looking for the filtration value more than anything else, and almost all that go down to 1 micron or less require multi-stage filtration.

Anything on this page ought to do you http://www.axminster.co.uk/wood-working ... extractors

If you plan to use this for other machines, then you need to think differently, there's another recent thread all about this:
a-dust-extractor-t79947.html

 

[Tetsuaiga]

Thank you wcndave, have just read through most of that link.

The smaller vacs do have some great filteration particle size filtration. I thought that the smaller vacs, (I have the cheapest axminster one now) weren't powerful enough to suck through enough air for machines line a drum sander. Maybe I am wrong though. Like the Numatic NV750 has 50mm outlet I believe.

Saying this I have found the cheap vacuum http://www.axminster.co.uk/axminster-ho ... -extractor
is actually doing alright on my bandsaw. I do notice that just turning it on, it pollutes the air with fine dust. I guess thats down to the 1 micron filtration power and maybe an old internal filter.

What I also would like is to use ducting to connect a couple of machines with blast gates. I only use bandsaw, planer/thicknesser and random orbit sander and drill press with a sanding drum right now.

 

[wcndave]

remember that volume of air, air pressure (sucking power) are different, and there are other measures too...

bandsaw and RoS create dust so again a "shop vac" is fine.

If you want to also use for P/T then you're into a whole different potential set up.

I have a vac + ducting with blast gates + drop box (to collect the chips - like a cyclone)
I have to take the bag out when doing P/T work, otherwise it fills up too quick

it's using 2.5" ducting and just about good enough for what I do.

However your options are wide. You can get chip extractor with a dust separator, two separate machines, etc etc... there's no one solution answer here.

 

[Tetsuaiga]

Great, I think I will probably just be upgrading my vac then. Either Numatic ND750, NVD750 also interested in the camvac.

 

[Normancb]

I have a Jet 16/32 and it makes a lot of dust, especially with coarse loading. I use a Record RSDE1 extracor with a 100 - 60 mm reducer to a 60 mm hose which I can switch between the sander and the router table. Seems to cope well. As others say, you need good filtration, not chip collection. Would also recommend you buy cloth backed abrasives - expensive but the paper stuff tears easily.

A Maplin radio controlled plug makes it easy to start and stop the extractor

 

[Tetsuaiga]

That's great, I am quite concerned about the health hazards of smaller dust particles and even the chip extractors with a fine filter attached seem to only go to 1 micron.

I will also wear a mask of course and plan to get an air filter.

Thanks for recommendation on the cloth backed paper, i'll remember that,

 

[wcndave]

They are normally rated at a %, eg 80% of particles up to 1micron.

1 micron is fairly standard. however the % is important.

 

[RogerS]

I think that you will lose 'suction' if you use something like a normal vacuum cleaner because the dust outlet on the drum sander (at least it is on mine) is 4" dia.

I use a Camvac twin and it works perfectly....designed for the job.

 

[wcndave]

There ought to be a difference between a normal household vac and a shop vac. i found with the reducer from 100 to 35mm that my shop vac still does fine with dust.