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Thien Cyclone Separator Lid Discussion / Re: Introduce yourself...
« Last post by Buck on October 17, 2017, 08:26:46 AM »
I found this website by searching for cyclone building plans, It's a very interesting site. My name is Buck, I fell in love with woodworking in 7th grade and have been at it for over 40 years. After my stint in the service I went to work in a friends machine shop and became a tool-maker. Now being a tool make and a woodworker causes a couple of problems. At work we routinely worked with tolerances as low as .00005 of an inch, that's 50 millionth's of an inch so I had become a perfectionist. There's not a chance that you do that with wood, so I have a huge scrap bin of pcs I consider out of tolerance from what i wanted when more than likely they would've been just fine. I have a basement shop with I have made into 3 areas. There is a wood storage area with homemade lumber racks on a wall, the scrap bin on wheels, my 12" sliding miter saw on a table I made with its own lumber racks above for what I'm working on, planer and jointer. 2nd area is where I do all the work to make things, I have my tablesaw setup permanently with out feed table, in corner are 2 drill presses. Router table, band saw, wood lathe, mortise mach, spindle sander are all on wheels. Some shelves with supplies, library, hand tools and other items. I have a cover I made for the table saw when I need an area to glue up, sand and assemble. 3rd area is just for finishing so its more or less my clean room. So that's me in a nut shell
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Thien Cyclone Separator Lid Discussion / Re: New build....Here we go....
« Last post by benjiminyoung on October 13, 2017, 08:36:13 AM »
too funny Rudy, re your reviing this thread. 

I am trying to decide if I should build your fantastic looking Thien version separator or buy the super dust deputy xl.
Did you go the dust deputy route yet? If so, any comparisons or comment?
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Thien Cyclone Separator Lid Discussion / Re: Top Hat Build
« Last post by will1983 on October 13, 2017, 01:11:25 AM »
Thank you for your reply Clydeone, I have read through Retired's thread, that was what inspired me to build my separator and also include the tall narrow inlet.

I've got an idea for how to build an air straightener doing something similar to what you have done. I think I will use some 40mm pvc pipe I have left over from fitting my bathroom, a single length inside the 110mm pipe with several radial fins of 1/8" ply supporting it. How long does it need to be? would 100mm be long enough?

Anyone any ideas on what to do about the height of the inlet? I am at a stage in the build that would allow me to put it either way up.

I completed the bottom plate and drop slot and fabricated the two rings that will support the top and bottom of the side walls last night, it is starting to take shape. I plan to use multiple narrow strips of 1/8" ply for the side walls, I have loads of this stuff nocking about in the workshop so I might as well use it rather than spend any money on clear plastic.
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Thien Cyclone Separator Lid Discussion / Re: Top Hat Build
« Last post by clydeone on October 12, 2017, 07:50:20 AM »
On the air straightener question - if you read through retired2ís build thread you will find they improve performance quite a bit.  They are not that hard to build.  I used 2 pieces of aluminum flashing crossed in the outlet of the separator and epoxied to the sides. 
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Thien Cyclone Separator Lid Discussion / Top Hat Build
« Last post by will1983 on October 11, 2017, 08:32:33 AM »
Hi I'm Will, new member from the UK here.

I've joined because I've decided to build a Thien top hat for my dust extraction system, after lots of reading here I have gleaned lots of useful knowledge, I still have a couple of questions.

So, my plans are for a 100mm diameter PVC ducted system with a round to rectangular transition feeding into a 438mm diameter separator through a 40mm wide drop slot into a 70l dust bin below.

The (100mm dia) round to (195mm x 40mm) rectangular transition is built from 3mm plywood and I have started on the bottom plate of the separator. I plan to use a 550cfm blower to power the system.

Various calculations show that I should achieve about 6800fpm velocity through my 100mm pipework which is plenty more that the 4000fpm minimum required to entrain air with dust.

The transition's rectangular end is 195mm high and 40mm wide to match the drop slot width. The round end is aligned with the top inner face of the rectangular end to force the are to expand downwards towards the drop slot prior to entering the separator unit. Is this theory correct or should it be aligned with the bottom inner face of the rectangular end?

I have a question regarding the rotation direction through the top hat in relation to the blower unit. Is there any benefit to matching these? I don't really want to have to build an air straightener as well.

Anyway I hope someone can help. Thank you in advance
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Thien Cyclone Separator Lid Discussion / Re: Introduce yourself...
« Last post by militarybrat on October 10, 2017, 04:57:28 PM »
HI I'm just a brat that is building my first seporator. Looked around stumbled onto this site and would rather build one than buy one. Love the simplicity of design along with the effectiveness. I'm a one man shop who does his research no more huffin dust for me. Wearing resporator while working is over. Working as an electrician has disabled me with T.O.S. so I am getting back to woodworking.
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Where did you get the bellmouth?

I'll second that request.

I got my bellmouth from a local spiral wound pipe fabricator.  They also fabricated the custom dust hoods for my thickness planer, jointer, and the round-to-rectangular transition piece for my separator. 

Bellmouths are available from a number of online sources, but  off the top of my head I'm not certain which ones.  Start with PSI (Penn State Industries) or Oneida Air.
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Thien Cyclone Separator Lid Discussion / Re: Introduce yourself...
« Last post by will1983 on October 09, 2017, 03:51:57 AM »
Hi, new member here rom the UK.

I'm Will a hobby woodworker in Cheshire in North west England.

I usually make items of cabinetry for myself and family. My largest being a dressing table and a number of wardrobes for our main bedroom. Painted MDF cabinetry with solid wood beech doors and dressing table top.

I joined this forum as I have been looking into upgrading my current dust extraction set up and have settled on a Thien type top hat design.

I will be posting a new thread with a few questions which I hope someone will be able to answer shortly.
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Where did you get the bellmouth?

I'll second that request.
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Thien Cyclone Separator Lid Discussion / Re: Introduce yourself...
« Last post by Alan H on October 06, 2017, 07:23:45 PM »
Hi, I'm Alan.   ;)

I have been looking to step up my DC setup.  I recently bought the HF 2HP separator,  but haven't set it up yet.  I have the small Dust Deputy hooked up to my shopvac and it works OK, but I want a more permanent solution for the several machines I use with DC.  Especially as I'm building a router based CNC and that will create lots of sawdust.

I want to build a Thein separator and will probably have a few questions, so here I am!
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