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HFDC Dust Collector Optimization #1: HF-DC Dust Collector Optimization

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Blog entry by Morton WoodWorks posted 08-18-2014 03:02 PM 912 reads 1 time favorited 9 comments Add to Favorites Watch
no previous part Part 1 of HFDC Dust Collector Optimization series Part 2: HFDC Dust Collector Optimization - Cutting the TOP HAT pieces »

I know that many people have modified the HF-DC but I just wanted to put my spin out there. I have been doing a lot of research on the many different styles of updates/modifications that have been done and holy cow there are a lot. But, most of them rely on the Thien principle that seems to be pretty simple. On the Thien blog there is a guy that tests and records many different modifications with different setups. I am going to set-out to make my entire system buying the least amount as possible. I already had a plastic 55G barrel and the HF-DC, so now its just time to start the crafting.

From the pictures you can see the standard 55G white drum that I will be using for the separator/collector side. Unfortunately the barrel I had didn’t have a removable top so I had to do some modifying.

To do so, I took my jig saw with a long blade and cut right along the black line that I put onto the container. I tried to keep this so that I would have a flat spot to attach my screws for the wooden top ring. One tip for attaching the top ring if you barrel is a little out of round (like mine was). Take a long clamp and using a couple blocks of wood to pressure the barrel, squeeze it in the longer direction to make the shorter dimension widen out to round. If you don’t, I don’t think it will affect the performance, just will have a bigger overhang in some areas.

To create the wooden ring I did something that I have been nervous of doing for a long time….I cut a circle on the table saw. I have hesitated to do this before due to the dangerous nature of this task, but after carefully doing it a couple times in this project, I think it will be something that I use in the future to cut some perfect circles. (I would have used my band saw but the table isn’t big enough and it would have taken a lot more to mod the table than to make this jig for the table saw.) Here you can see the barrel with the wooden top ring attached. I used 2” screws into the barrel side doing my best to keep the screws inside the lip. I did have a couple slip out the side, but just backed them out, put some silicone in the hole and angled them a little more. After I had this top ring attached, I ran a healthy bead of silicone around the inside and outside of the barrel right where the plastic and MDF meet. The wooden ring for my base is 1-3/4” but that is all dependent on how big you want the ‘top-hat’ separator to be. Mine will turn out to be just about a 20” inner chamber.

Now, next steps are to create the chamber and I hope to have that up and posted later this week. I might also try to do a video on the cutting of the circles on the table saw…. Until then….



9 comments so far

View NormG's profile

NormG

4170 posts in 1656 days


#1 posted 08-18-2014 03:37 PM

Keep us advised how it works out

-- Norman

View DIYaholic's profile

DIYaholic

13519 posts in 1327 days


#2 posted 08-18-2014 11:45 PM

Looking forward to future updates…..

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procratination a bad thing?

View MT_Stringer's profile

MT_Stringer

1881 posts in 1883 days


#3 posted 08-18-2014 11:50 PM

Mine does have the removable lid. Nice to be able to see the level in the drum.

-- Handcrafted by Mike Henderson - Channelview, Texas

View Morton WoodWorks's profile

Morton WoodWorks

8 posts in 562 days


#4 posted 08-19-2014 12:04 AM

That is nice to have the removable lid, but I am going to be doing the “TOP-HAT” style. After reading a lot about it, I am planning on doing this to limit all hindrance to optimum air speed. With all of the 90’s and the extra hose you have between the separator and the motor, and then the motor to the DC there might be a significant drop in the air speed and rotation. In my case, the inlet will come in and spin the same direction as the blades on the motor and also the same direction into the can. With this change, I should get better air flow and not loose (and maybe even gain) efficiency and cleanliness of the fine dust.

View MT_Stringer's profile

MT_Stringer

1881 posts in 1883 days


#5 posted 08-19-2014 01:28 AM


That is nice to have the removable lid, but I am going to be doing the “TOP-HAT” style. After reading a lot about it, I am planning on doing this to limit all hindrance to optimum air speed. With all of the 90 s and the extra hose you have between the separator and the motor, and then the motor to the DC there might be a significant drop in the air speed and rotation. In my case, the inlet will come in and spin the same direction as the blades on the motor and also the same direction into the can. With this change, I should get better air flow and not loose (and maybe even gain) efficiency and cleanliness of the fine dust.

- Morton WoodWorks

I haven’t plugged a hose yet in over a year’s use whether it is the planer, joiner or the drum sander. Of course, larger equipment than mine might bog it down.

Post some pics when you get it going.

-- Handcrafted by Mike Henderson - Channelview, Texas

View playingwithmywood's profile

playingwithmywood

12 posts in 249 days


#6 posted 08-19-2014 05:06 AM

I like your upgrade and want to convert mine to a top hat but I have the thien baffle in mine… Putting the pleated filter on mine from Wynn environmental make it a totally different machine with the increased air flow while being lowering the noise level…. I highly recommend the upgrade,,, a safer filtration level with more air flow

View Morton WoodWorks's profile

Morton WoodWorks

8 posts in 562 days


#7 posted 08-19-2014 05:25 AM

I’d like to do that in the future, but right now I think going from no DC to a 5 micron system will be much better for me. Like I said in my post, I’m trying to do this with the stuff I have laying around my shop. Isn’t the WYNN filter over $100?

View DIYaholic's profile

DIYaholic

13519 posts in 1327 days


#8 posted 08-19-2014 10:42 AM

Yes, the Wynn filters can even run more than $150….
However, much less expensive than a double lung transplant!!!

There have been less expensive “upgrades”, using truck air filters. A search on LJ should yield additional information.

BTW: I love my Wynn 35A274NANO cartridge filter!!!
That and the folks at Wynn Enviromental are a pleasure to deal with.

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procratination a bad thing?

View playingwithmywood's profile

playingwithmywood

12 posts in 249 days


#9 posted 08-30-2014 02:12 AM

the point of using the Wynn cartridge filter is you dramatically increase air flow and lower noise of the collector while filtering smaller particles…. so I think it is a wynn wynn situation

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