Dust Collection Overkill - How good is good enough?

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by GrizzlyBagWorks posted 01-01-2018 02:05 AM 2226 views 0 times favorited 7 replies Add to Favorites Watch
View GrizzlyBagWorks's profile


106 posts in 2397 days

01-01-2018 02:05 AM

I’ve downsized the number of woodworking tools I have in my shop as my interest in welding and machining have grown over the past year. I’m down to the following stationary tools that I hook into my Dust Collection. Everything else is to my Festool Vac.

- Ridgid R4512 (w/ a SawStop Overarm Dust Guard hooked up to a festool vac – standard DC on the bottom)
- Powermatic 8” Jointer with Straight Blades
- Dewalt DW735 Planer w/ Shelix head (has forced chip ejection)
- Ridgid Oscillating Spindle Sander
- Delta 14” Wood/Metal Bandsaw (mainly setup for metal right now since I use my 10” Inca quite a bit.
- Delta 12” / 6×48” Disc/Belt Sander (Mainly for metal at this moment—no wood)

Right now I have a Delta 1.5HP SDD setup. It’s compact, rolls easy and is pretty quiet. Even though this is a small unit air flow is ~700-800cfm with a SDD attached and a 10’ 5” hose, based on the SP calculators and the unit’s fan curve.

I did A LOT of research before I put together the Delta system (previously came from a Harbor Freight 2hp/Wynn/Thein setup). In that time I realized I really ‘should’ go larger but couldn’t justify the cost….until I found a used cyclone for sale. So, I bit.

First thing is, I don’t plan on ducting my shop at this point. I only plan to use flex hose for the time being.

Do you guys think the Cyclone is overkill given the tools I have, especially since I don’t have the ability to install ducting and will be using flex hose. The only real fine dust producers are the table saw, belt/disc sander and the wood lathe when sanding. I’m wondering if my Delta is good enough. I don’t have a drum/large belt sander, large planer, not even a miter saw station.

What would you do?

Thanks guys and Happy New Year!!!

7 replies so far

View brtech's profile


1068 posts in 3729 days

#1 posted 01-01-2018 03:30 AM

No. Assuming you have not screwed anything up and have a good filter, you are safe. That matters. It’s not overkill.

The number of machines doesn’t matter. What matters is how many CFM you have at the tool. Nearly everyone has only one tool in the DC’s path at a time, either by moving the hose or opening one blast gate. So whether you have one tool or 100 tools, as long as the DC is exhausting dust from one at a time, everything is fine.

How long is the flex tube? 5” is better than 4 for sure, but you still have a limit on how long it can be and still get 700 CFM+ at the tool.

View pintodeluxe's profile


6175 posts in 3619 days

#2 posted 01-01-2018 03:44 AM

I made a similar jump from a 1hp Jet to a 2hp Tempest cyclone. I hard piped to all my stationary tools, and really can’t believe the increase in performance. The floors stay clean, the air stays clean, and I enjoy woodworking so much more now.

What I discovered is the metal duct work on the ceiling actually freed up valuable floor space. No more flex hoses laying around on the floor, and no more scooting the DC around from tool to tool. I’ve even upgraded my most used tools to automatic blast gates, and that is a downright luxury.

I would say use flex hose in the short term, and plan to run metal ducting in the future.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View JBrow's profile


1368 posts in 1726 days

#3 posted 01-01-2018 03:57 AM


It seems to me that sucking as much fine dust out of the air as possible is a good thing. Such a device keeps the shop, the house, and your lungs cleaner. Therefore, unless you are in a real pinch and need to raise money by selling some equipment, keeping the most effective dust sucker in the shop seems to me to be the best option. If you buy into my reasoning, then keeping and using the PSI Tempest 1535S would be a good decision and any buyers regret can be put to rest. I suspect there are some things you could try to reduce the annoying noise emitted by the PSI dust collector should you elect to keep that machine.

View Redoak49's profile


4804 posts in 2795 days

#4 posted 01-01-2018 02:06 PM

One of the important issues that I do not think is talked about enough is the dust pickups. Things like the Ridgid Oscillating sander and a big belt sander put out lots of very fine dust but have poor dust collection.

View HorizontalMike's profile


7874 posts in 3720 days

#5 posted 01-01-2018 03:02 PM

Sounds like a great DC system! I have and use what you started with, the HF +Wynn 1.0micron + Thein system. I eventually got wise and added a squirrel cage 4x air filtration box using Bert’s (brtech) as an example. I am sure there are others like this as well, and this really, really cleans up the floating dust that the DC misses. My nose can really tell the difference within minutes of turning this thing on. Anyway, here is mine:

-- HorizontalMike -- "Woodpeckers understand..."

View jonah's profile


2123 posts in 4105 days

#6 posted 01-01-2018 03:05 PM

If you’re proposing to use that system with 4” flex hose, then yes, you’ve just robbed all the airflow out of your system by choking it down too much. If you use 6” flex hose, on the other hand, you’re in good shape.

View Fred Hargis's profile (online now)

Fred Hargis

6317 posts in 3299 days

#7 posted 01-01-2018 03:27 PM

It’s kinda what Jonah said. If you intend to choke that unit down, there’s little sense to have one that size. But with adequate ducting it’s not overkill for your stuff.

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

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics