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How much dust collection?

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Forum topic by Submariner posted 09-20-2014 04:19 PM 1001 views 0 times favorited 9 replies Add to Favorites Watch
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Submariner

8 posts in 1488 days


09-20-2014 04:19 PM

The shop setup is progressing nicely, but I have a dust collection question. I have a 15” Jet planer, 10” Grizzly table saw, Grizzly 14” bandsaw and will soon be getting an 8” jointer. I will never have the need to run more than one of these at a time, so my question is, how big of a dust collector do I really need? I’m considering several 2HP models right now including a jet DC-1250, Grizzly G0548 and similar. Will that be sufficient for my needs? Long term I see setting up hard piping using blast gates.


9 replies so far

View Fred Hargis's profile

Fred Hargis

3949 posts in 1960 days


#1 posted 09-20-2014 04:37 PM

That’s usually the starting point I recommend ( 2HP/12” impeller). A lot of guys get by with the HF 2 HP (actually 1.5 HP/10” impeller), so the question becomes just how much of the fine dust do you want to collect. The very finest dust takes a lot of air flow, with very tight filtration. Adding a pre separator (like a Thein) does add to the air flow resistance, but they are still a nice addition. In terms of permanent ducting, if you intend to go with 4”, a DC like the HF will work just fine….a larger one will just be choked by the small duct and offer no (or very marginal) increase in air flow. You might want to peruse the Bill Pentz site a little, starting in the FAQ section for some good info.

-- Our village hasn't lost it's idiot, he was elected to congress.

View bonesbr549's profile

bonesbr549

1176 posts in 2534 days


#2 posted 09-20-2014 05:45 PM

Well the answer to this question depends on a few things. What’s the distance between tool to DC? Are you going to run 6” ducting or 4”? Finally, can you do 220v?

I’ve used the same 2hp unit for over 20 years. I have it on its own circuit and my main 220v tools on another as I will never have more than one tool at a time on.

I have been fortunate that the longest run I’ve had to make is around 20’. I was able to use 4” for all so it has been great as the 6” gets a tad expensive, but for the main trunk that’s preferred.

I recommend a canister unit not just the bags. As the bag fills up, the suction drops dramatically with just the cloth bags. That improves with the canister system with plastic bag to keep as much out of the air as possible.

Also don’t assume that’s going to keep dust out of your lungs. Get a air filtration system for the shop to take more out.

Finally I’ll reccomend the Grngate system. Lovem. It’s a luxury but really cool Good luck

-- Sooner or later Liberals run out of other people's money.

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Big_T

119 posts in 824 days


#3 posted 09-20-2014 06:19 PM



Finally I ll reccomend the Grngate system. Lovem. It s a luxury but really cool Good luck

- bonesbr549

Love the concept, but it is a luxury gadget… on Amazon it’s $600 – not including the DC. I personally would get one if I was a pro LJ and add overhead ducting. But reality is I am only a part timer 6 months of the year, so it looks like my portable DC is gonna follow me around the shop for now.

View Manitario's profile

Manitario

2402 posts in 2350 days


#4 posted 09-20-2014 06:42 PM

An important decision for you at the start is whether you want good chip collection (ie. no visible shavings around your machines) or true fine dust collection. The majority of “dust collectors” on the market, including the venerable Harbour Freight 2hp unit, will not achieve anything better than chip collection. Now, a whole bunch of LJ’s will chime in here and say that they have a small DC and it does fine, they can’t see any dust around their shop. This is one of the biggest misconceptions in woodworking DC; that just because you can’t see the dust that your machine is doing a good job collecting it. The smallest the human eye can see is about 100 microns…when we talk about getting good dust collection we usually are talking about the less than 5 micron size, ie. around the size of bacteria.
To achieve good fine dust collection and eliminate the harmful dust, a DC has to have 2 things; a large impeller to move sufficient air and a large enough HP to overcome the “friction” produced by your ducting system. This requires at least a 3hp system for most average sized shops, such as yours.
If you want your shop to look clean, buy something that is cheap. If you want a DC to remove the really fine dust that is a health hazard, look for something at least 3hp. Doesn’t matter whether cyclone or not…a cyclone just keeps the filters cleaner longer…
I have a 5hp Clearvue which I used in my 18×33ft shop and it worked excellently. If I was on a bit more of a budget, I’d buy one of the Penn State Industries DC’s which I think are the best value for what you get.

-- Sometimes the creative process requires foul language. -- Charles Neil

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Big_T

119 posts in 824 days


#5 posted 09-20-2014 09:27 PM

I have a 5hp Clearvue which I used in my 18×33ft shop and it worked excellently. If I was on a bit more of a budget, I d buy one of the Penn State Industries DC s which I think are the best value for what you get.

- Manitario

Manitario I like your position of not buying Chinese but the 5hp ClearVue/Penn State is $1500-2000.
I believe a more cost effective solution for a weekend warrior would be a reusable $9 N100 HEPA mask for particles as small as 0.3 microns. For a daily LJ, then the ClearVue benefits may add up over time.
Your thoughts are appreciated as I am just a noob.

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Manitario

2402 posts in 2350 days


#6 posted 09-20-2014 11:23 PM

lol, yeah a hepa mask would definitely be a lot cheaper! I do woodwork 4-5d/week on a good week and I hate wearing a mask so getting a large DC was a better long term solution. The Penn State Ind. 3.5hp Tempest cyclone is only $1195, probably the best DC out there for its price:
http://www.pennstateind.com/store/TEMP1535S.html?prodpage=1TE

-- Sometimes the creative process requires foul language. -- Charles Neil

View timbertailor's profile

timbertailor

1592 posts in 891 days


#7 posted 09-21-2014 01:28 AM

Here is a good article on the subject.

So the real question is, What is your health worth and what is practical?

That, you will have to decide for yourself.

-- Brad, Texas, https://www.youtube.com/user/tonkatoytruck/feed

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Big_T

119 posts in 824 days


#8 posted 09-21-2014 03:58 AM



Here is a good article on the subject.

So the real question is, What is your health worth and what is practical?

That, you will have to decide for yourself.

- timbertailor

Thanks for the fast read, the highlighted portion regarding building it from scratch, stuck in my mind…

“please be aware that if built improperly this equipment can cause property damage, hurt, and even kill”

Guess I will have to factor one into the budget for 2015, but for now I’ll incorporate good ventilation and a mask with dual N100 filters.

View bob101's profile

bob101

293 posts in 2917 days


#9 posted 09-21-2014 12:15 PM

I have a 24×28 shop and run a 3hp dust collector with a 1 micron top filter bag, in my opinion I would not buy anything that cant filter down to 1 micron. I also run a delta ambient air filtration unit, that again has a final filtration of 1 micron. the fine non- visible dust is what is the worst for you! also I see a lot of guys running ambient air cleaners but they don’t change the inner filters nearly enough, yes they are expensive, but 50- 100 dollars a year is way better than getting emphysema. As a health care worker I see many people with avoidable chronic lung issues, you do not want to be one of them!

-- rob, ont,canada

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