My Mini Cyclone

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Project by English posted 09-07-2014 12:15 AM 4746 views 6 times favorited 6 comments Add to Favorites Watch

I had to replace my shop vac. Sanding dust destroyed the bearings in the old one way to early. So for this one I wanted to keep as much dust away from the vac as possible. I started with Bill Pentz’s cyclone calculator and only planned to build the cone, similar to the Dust Deputy.

I made it out of 26 gauge sheet metal, 2 1/2” hose connection in and out with a 3” drum connection. Sealed the connection PVC to sheet metal with hot glue. I put it on a 5 gallon steel bucket with a lid and seal ring.

On my first test I vacuumed up a full 5 gallons of saw dust from my planer, only had a table spoon of dust in the shop vac.

Thanks for looking!!

-- John, Suffolk Virgina

6 comments so far

View grantd's profile


113 posts in 2251 days

#1 posted 09-07-2014 12:37 AM

I’ll have to do some looking at the bill pentz site. The dust deputy looks like a good solution but I just have such a hard time understanding how an injection molded piece of plastic could cost 50+ dollars. I’m surprised that there isn’t a Chinese knockoff in the $10 range but I haven’t found it yet.

Good job on the build, how much time and money do you think you spent?

View English's profile


688 posts in 2246 days

#2 posted 09-07-2014 01:28 AM


I used a piece of 26 gauge 6” duct that I had on hand, flattened out and drew the shape, I had the 2” PVC left from a plumbing job on my new kitchen. I used copper rivets to close the seam. Time, it took me about 3 hours to make the cyclone. But all the parts were from left over around the shop.

-- John, Suffolk Virgina

View Steve Cherry's profile

Steve Cherry

190 posts in 2600 days

#3 posted 09-07-2014 01:52 AM

Nice job; very gratifying to see someone be creative/inventive and solve a problem without just buying the solution. Thanks for posting.

-- Steve - Front Royal, VA

View Kwit's profile


104 posts in 2728 days

#4 posted 09-07-2014 01:27 PM

Great build- I’ve been trying to come up with a similar design myself

Have you tried doing some sanding with a 100+ grit ROS or similar yet? That is most of my shop vac usage – my DC is hooked up to the machines (tablesaw, router, planer). I am interested on what makes it past the cyclone from that type of work.


-- don't talk about it - be about it

View mmh's profile


3680 posts in 4491 days

#5 posted 09-07-2014 01:52 PM

Looks like you can get your system through the shop nicely. Have cyclone will travel!

-- "They who dream by day are cognizant of many things which escape those who dream only by night." ~ Edgar Allan Poe

View hoss12992's profile


4171 posts in 2662 days

#6 posted 09-07-2014 08:24 PM

That is really cool. Great job

-- The Old Rednek Workshop

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