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New take on the HF Dust Collector w/Wynn Filter

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Project by HankLP posted 03-15-2017 03:04 AM 1621 views 5 times favorited 5 comments Add to Favorites Watch

I’ve been using the HF dust collector for a few years now and made some recent improvement adding a stage 1 separator (see my previous project) and a Wynn filter. But there are still TWO things about the set-up that bothered me. One is the turbulence in the lower bag of the DC that keeps stuff whirling around and kicks a lot of it up into the filter where it stays. The other is that the filter sits on top of the DC and is attached underneath, which means the lower bag cannot be removed without a lot of dust falling out of the filter, making a mess and complicating a simple job of emptying the lower bag. Those who have this system will understand this situation.
I tackled both these problems by adding a Thein type baffle on the lower part of the “collector” (i.e. the green section between the filter and lower bag) and a collar on the upper part. I cut the baffle to fit inside the collector, and simply attached it with three screws which went through the sheet metal. The collar has a rabbeted outer edge to nest in the top of the collector, and an inner rabbeted edge that the dust collector sits in. Foam weather-stripping was used to seal the outer edge. The inner edge is sealed by the gasket that comes attached to the filter. I used some angel brackets that came from somewhere – never throw away any hardware ever – to hold down the collar to the collector, and made some plywood clips to cinch down the filter to the collar.
I’m pleased with the results. The product in the bag stays there and doesn’t blow around, and loosening four screws makes removal of the filter much easier than trying to disconnect the attachment underneath the collector. The next phase is to complete the outdoor shed where the dust collector assembly will have a permanent home… just waiting for some nice weather in the Northwest.





5 comments so far

View woodbutcherbynight's profile

woodbutcherbynight

3638 posts in 2243 days


#1 posted 03-15-2017 03:26 AM

It looks like a nice set-up. Good work!

-- Live to tell the stories, they sound better that way.

View kocgolf's profile

kocgolf

267 posts in 2013 days


#2 posted 03-15-2017 09:43 PM

Interesting…so you have a separator in the garbage can in the background, and then a baffle built into the green connector ring as well? Does that drop your sfm/suction much? How were you getting much into the bag/filter if most of it was pre-separating into the garbage can? Doesn’t seem like you would need the one in the green ring, although I can see that being a possible substitute for the one in the garbage can. I’m just starting a mod on mine and this has my rethinking things a little.

View HankLP's profile

HankLP

43 posts in 336 days


#3 posted 03-15-2017 11:54 PM

The first separator – the 20 gallon can – picks up probably 90% or more of the chips and dust. The advantages of the stage 1 separator are two-fold. First, The 20 gallon barrel is very easy to empty and secondly, it will take out any metal or other objects that may damage the impellor. Upon first use, I noted that a fair portion of the shavings from my jointer wound up in the Wynn filter because of all the turbulence in the bag. The second Thein filter was installed in the green collector just to calm the air flow through the bag, and it works very well. All the dust that settles in the bag just sets there now.
The longest run on the system is over 40 feet of 4” PVC pipe, and also has four 90 degree elbows. The dust collector has no difficulty handling this. The Wynn filter also improves the air flow greatly. The pleated filter has 370 square feet of surface area – compared to 35 SF on the bag filter – and is cleaned using compressed air from the outside. I will be happier when the outside installation is complete, but this will greatly improve long term maintenance.

View HankLP's profile

HankLP

43 posts in 336 days


#4 posted 03-15-2017 11:56 PM

The first separator – the 20 gallon can – picks up probably 90% or more of the chips and dust. The advantages of the stage 1 separator are two-fold. First, The 20 gallon barrel is very easy to empty and secondly, it will take out any metal or other objects that may damage the impellor. Upon first use, I noted that a fair portion of the shavings from my jointer wound up in the Wynn filter because of all the turbulence in the bag. The second Thein filter was installed in the green collector just to calm the air flow through the bag, and it works very well. All the dust that settles in the bag just sets there now.
The longest run on the system is over 40 feet of 4” PVC pipe, and also has four 90 degree elbows. The dust collector has no difficulty handling this. The Wynn filter also improves the air flow greatly. The pleated filter has 370 square feet of surface area – compared to 35 SF on the bag filter – and is cleaned using compressed air from the outside. I will be happier when the outside installation is complete, but this will greatly improve long term maintenance.

View kocgolf's profile

kocgolf

267 posts in 2013 days


#5 posted 03-16-2017 02:44 PM

Very cool. And easy to implement. No reason not to add further separation if it keeps the filter cleaner. I just got my filter to replace the bag yesterday afternoon. Can’t wait to experiment with this. Thanks for the idea!

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