Thien cyclone separator lid with baffle

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Project by unrested001 posted 01-03-2013 04:49 AM 13364 views 29 times favorited 12 comments Add to Favorites Watch

I built this based on info from J. Phil Thien’s website. In his gallery are pics and hints on the design. I say this because he gives you just enough info to help you build it without step by step plans. I believe he wanted us to think instead of just handing it over. I’m good with that and thank him for the help. I must of course give credit where it is due, and only take credit for the effort. It works fantastic and I recommend building one if you been considering it. I also built some blast gates and pipped it through the shop with 2” PVC and some flex tubing.

-- I make lots of dust, everything else is just a byproduct of the dust making process!...Frank,NJ

12 comments so far

View a1Jim's profile


113725 posts in 2617 days

#1 posted 01-03-2013 05:13 AM

Nice work Frank.

-- Custom furniture

View Bill_N's profile


235 posts in 1319 days

#2 posted 01-03-2013 11:26 AM

Looks nice
and a good build
This is on my list of to dos

-- I have the Saw Dust Fever

View Uwe's profile


31 posts in 2233 days

#3 posted 01-03-2013 01:19 PM

Good job Frank. I`m also considering building one so thanks for the recommendation.

-- Uwe

View Milo's profile


869 posts in 2359 days

#4 posted 01-03-2013 01:53 PM

I’ve used a Thien for years. You’ll love it, and nice work on the blast gates!

-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...

View whitebeast88's profile


3947 posts in 1230 days

#5 posted 01-03-2013 09:27 PM

looks great!!!

-- Marty.Athens,AL

View blackcherry's profile


3230 posts in 2863 days

#6 posted 01-03-2013 09:30 PM

Nice work on your Thien helper have had one for a few years now and what a great addition to the shop…I would recommend a ring cut out and installed about 1/3 of the way down the trash can to help give support from the suction and relief from the can noise. I just caulk it to the side walls and it work great. I also added a mobile base to the can just for shop clean up. Enjoy your clean shop…BC

View JoeinGa's profile


5451 posts in 1047 days

#7 posted 01-03-2013 10:45 PM

Yep. I’m definitely gonna hafta build me one ‘o these some day.

-- Perform A Random Act Of Kindness Today ... Pay It Forward

View JT23325's profile


165 posts in 1187 days

#8 posted 01-03-2013 10:48 PM

Well Done, Just picked up a HF system and got the trash can today to make mine..

-- Jeff, Ability will never catch up with the demand for it. - Malcolm Forbes

View NormG's profile


4995 posts in 2044 days

#9 posted 01-04-2013 02:56 AM

Thanks, have to make one

-- Norman

View Drifter's profile


33 posts in 1203 days

#10 posted 01-04-2013 02:41 PM


Nicely done – Thanks for the post. I have been thinking about adding the blast gates and piping to my system but since I work out of my garage – things tend to move around. The wife has been talking about wanting to park in the garage (cars can live outside to) but also building a small shop in the back so I am looking forward to possibly setting up a better work space.


I am going to have to try the ring in my separator. I have been planning on re doing mine – with a larger can – and have noticed that with the 5 gallon one the sides do tend to collapse a little under suction. Thanks for the tip.

-- - It's not worth doing if your not willing to do your best.

View unrested001's profile


76 posts in 1346 days

#11 posted 01-05-2013 04:06 AM

Thanks all! BC I’ll have to add that ring. I thought about putting in a ring but had not decided if I wanted it on the inside or out.

-- I make lots of dust, everything else is just a byproduct of the dust making process!...Frank,NJ

View Jim Jakosh's profile

Jim Jakosh

14015 posts in 2145 days

#12 posted 01-07-2013 03:09 AM

Good job, Frank!!

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

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