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Thread: Internal Thien Baffle for HF DC

  1. #1
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    Internal Thien Baffle for HF DC

    I was thinking about doing an internal Thien baffle in my HF 2HP DC. Anyone here done one yet?

    http://lumberjocks.com/rexbair/blog/34712

    Also ordering the 35A filter kit from Wynn today.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  2. #2
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    I did pretty much the exact same thing several years ago...

    http://www.jpthien.com/smf/index.php....msg796#msg796

    Highly recommended. HIGHLY. It made a huge difference in the amount of fines (and chips) that were being blown into the Wynn filter.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

  3. #3
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    I have not done it and (I have not read much about it) I'm not sure what the "internal" baffle does. I've seen baffles on garbage cans pre-DC to separate the big stuff our before it reaches the DC. The internal baffle must sit on the bottom side of the DC? Otherwize the Wynn filter will not fasten down. Even on the bottom side it is going to make it real difficult to anchor the filter if they are still anchored as mine is, you need to have access to the bottom to tighten the anchor hooks. It appears that every time you want to blow out the filter you will have to remove the baffle to remove the filter..... Like I say I haven't read much about that baffle, but I would suggest, if you don't already know the answers, wait until you get the filter before building the baffle to see how they will work together.
    "We the People ......"

  4. #4
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    Paul, trust me. It works very well and makes a HUGE difference. (Keep in mind that most photos showing the baffle have the DC part upside down, so you're seeing the bottom of the separator.) Yes, it's a bit tricky attaching the filter with the turnbuckles that Wynn provides, but it's worth the trouble, especially since it greatly reduces how often you'll need to remove the filter to clean it in the first place. Before I added the baffle, I was having to remove and clean my filter about once a month. After the baffle, it was once every 12 to 18 months, I'd guess.

    Not exactly sure why it works so well, I just know that it does.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

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  5. #5
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    The explanation that I got, was that is reduces the cyclone happening in the bottom half of the collector, which allows the chips and dust to settle rather than being stirred up and possibly getting sucked up into the filter bag. So without the baffle, I can watch a little tornado going in the bottom of my collector bag. With the baffle it should hardly move down there, so I've been told.

    BTW, Just got off the phone with Denise from Wynn, great folks to talk to, should have my filter next week sometime.
    Last edited by Darren Wright; 04-16-2013 at 05:24 PM.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  6. #6
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    I've done it on my Jet, works great at keeping the filter cleaner for much longer...



    Also love the folks at Wynn - such great people. Sadly, they sold me a "lifetime filter" so I probably won't have to buy much more from them anytime soon - they deserve all the business we can give them, though.

    The way I understand it, the baffle simply keeps the cloud caused by the stirred up air from being able to rise up into the filter area ... it's basically giving the cleanest possible air a clearer path to the filter with as little dust picked up from the bag as possible. It still swirls down there, but not nearly as fast or as dust-laden. It works VERY well as an alternative to a full-on cyclone - especially after going to 6" duct work and the Wynn filter.
    Jason Beam
    Sacramento, CA

  7. #7
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    Thanks for the explanations. I see how Jason in his video has his filter attached. Why wouldn't that work on the HF? Sure be a lot easier than standing on your head undoing the hooks and getting all that dust falling in your face! One more question and them I think I have another project to do, but does this baffle restrict the air flow in any way, if so I'd be afraid that would not be good for the DC unit? Boy I hate cleaning that filter!
    "We the People ......"

  8. #8
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    From what I've read, no, but from what I've seen I not sure a little bit of loss would out weigh the benefits.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  9. #9
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    Quote Originally Posted by Jason Beam View Post
    I've done it on my Jet, works great at keeping the filter cleaner for much longer...
    So you've only done a baffle on the bottom half?
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  10. #10
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    Quote Originally Posted by Paul Douglass View Post
    ... I see how Jason in his video has his filter attached. Why wouldn't that work on the HF?...One more question and them I think I have another project to do, but does this baffle restrict the air flow in any way, if so I'd be afraid that would not be good for the DC unit? Boy I hate cleaning that filter!
    I agree that Jason's elastic approach for mounting the filter is brilliant, and yes, it'd work great on the HF model. As for airflow, if anything, it improves it because your filter is not getting clogged. Also, the opening in the baffle has more square inches than the opening at the end of the DC hose, so I'd think the hose is the limiting factor.

    Quote Originally Posted by Darren Wright View Post
    So you've only done a baffle on the bottom half?
    Yep. It goes below the separator ring. Not sure where you'd add another one to the mix.

    I should also add that in the thread I linked to earlier, there was some discussion about whether the neutral vane helped or hindered things. (That's the extra sheet metal tube I added to the inside of the inlet.) I did eventually remove mine, and it seems to have made a good thing even better.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

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