Thread: Sherwood DC-50 - Compact Dust Extractor

yes, doubtless it was better to start your own thread. If you can, go delete the other one on that ancient 5 yr old thread......

It'a basically a glorified vacuum cleaner; good for hand held power tools where the extraction point is right next to the dust source, but I suspect it simply can't move enough air to be useful with your machines. Also, it would be NOISY​ as hell...

Flow claim is 53 L/s which is about 112 CFM which is the same as a clean empty shop vac.

You will need about 7x that for an SCMS, for Bandsaws it depends on size but for a 14" you need about 5x that.

I don't have the room for a big setup with ducting, so the idea would be to move it between scms and bandsaw.

The specs say 85db, so not quiet agreed, but wouldn't need to run the whole time, just when doing a few cuts then turn off. I should be wearing hearing protection anyway if using those tools even without extraction.

I am hoping someone has actually got/used one?

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Thanks BobL. That's is useful to know

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If your goal is to catch the large stuff so you can reduce some of the shovelling then it will work. If you want to protect yourself and not have to wear a mask or respirator it isn't up to the task.

No chance of a bigger 2hp DC to roll outside when you need to play in the shop and bring it back in when done? Or would that bring down the wrath of your neighbours?

Pete

Originally Posted by marphlix

I don't have the room for a big setup with ducting, so the idea would be to move it between scms and bandsaw.

The specs say 85db, so not quiet agreed, but wouldn't need to run the whole time, just when doing a few cuts then turn off. I should be wearing hearing protection anyway if using those tools even without extraction.

I am hoping someone has actually got/used one?

I have not used one but I have visited several of Sheds where they were being used and the layer of fine dust all over those sheds showed they were clearly not up to handling the fine dust on machinery.

The 0.5 micron manufacturers rating is somewhat meaningless. If it only collects some of the fine dust it matters naught what the micron rating is. Any micron rating also needs to be accompanied by a percentage efficient rating. It might only be 10% efficient at 0.5 microns when its clean. The filtration efficiency will improve sa it clogs top but then the flow will decrease leaving even more dust behind. Adding a small cyclone will help keep the filter clean.

If you get one to collect chips then a couple of bathroom style exhaust fans would be needed to ventilate the fine dust left behind. Would it be possible for you to located it outside?

Thanks All,

A question about regular DCs, would i be able to enclose a 2HP single stage DC in an MDF box, to stop the fine particles circulating out of the top filter bag or does this need to be open to allow air flow? I have read that you get better efficiency with the pleated filters, but just asking about enclosing? Venting outside or running outside wouldn't be an option, due to space setup and closeness of neighbours

You can box up the DC but it is like blowing on a straw. Pinch the end shut and you can't get any air out and everything stops. Boxing the DC can only be done if you vent it outside but you said that is out. Renting? You can soundproof the box and have a back and forth vent on it with sound proofing lining it. Then the air can get out and if you do a good job of making it the neighbours won't hear it at all.

Pete

So if you haven't gathered, i don't know much about DC. Been reading through these forums and stickys.

Essentially i will use the SCMS or Bandsaw a max of 1 or 2 hours per week. I mostly do handtool stuff

My primary factor is $$. followed by Space and noise

The way i see it is i have these options:
1. Get a ventilator and wear a mask while using machines (and keep using shop vac for clean up). This seems to be BobL's advices from here: DC for Single Machines
2. Get a 2HP machine outside, box it up, but this would mean i need longer runs of ducting (unsure how long, but i would say at least 3-5meters). From what i understand this will then lower the CFM so may not end up being usable anyway needing a bigger DC, thus more $$ and space.
3. get a 2HP inside but also get a pleated filter (not sure where i will put it), but this would potentially still have some longer runs of duct.

Another consideration i have is power. I don't know much, but i only have a single 10Amp circuit that in the garage that is also shared with part of the house. I would need to investigate whether i could run a DC and the machines both at the same time anyway.

I am kinda leaning towards a ventilator initially to have the environment clean-ish and using a mask/shop vac while using the powered machines.

For 1-2 hours a week or operation I would suggest a shop vac that "blows" as well as "sucks" and attach an extra hose to the outlet and poke that out the door or window.
Ryobi wet and dry or similar vacs have this feature.
Then add some forced ventilation - a couple of bath room fans should do it.

If you decide to go for the 2HP DC, 10A should (just) be Ok to run the 2HP and SCMS at the same time. Its not like the SCMS is cutting at full load continuously but in short bursts which 10A circuit should be able to cope with .
3-5m duct lengths for a 2HP DC (~300 CFM) will still do be better than a shop vAC (120 CFM)
A pleated filter for the 2HP DC would produce better flow than filter bags.