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Thien Baffle Separator #5: Harbor Freight's Wye Inlet !!!!

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Blog entry by Lance posted 11-24-2011 03:46 AM 7336 reads 2 times favorited 24 comments Add to Favorites Watch
« Part 4: Dust Collection 101 Part 5 of Thien Baffle Separator series no next part

Well folks, if you’ve been following my blogs you know I’ve been working on a thein baffle separator for my HF DC. Since I’m not completely installing all my runs I’ve been trying to plan for the future. I’ve been stuck on the wye piece out of the separator for a couple weeks now. The reason why I “need” to run the WYE is b/c of my shop set up and where I wired my 20 amp breaker plug for the HF DC.

During the planning stages of this project I’ve always wanted the best possible flow for my system, that’s why I was trying to run 5” main pipe with reducers to my machines. Well, it just so turns out that 5” pipe/connectors/etc. are rare to come by. Anyways, I was packing up the Penn State box to return my blast gates and hose when I looked up and saw the Original 5”x4”x4” wye from the HF DC and said “Maybe I should just use that?????”. I was having problems with the weight of the wye and blast gates anyway, why not run the original wye out of my separator with ABS blast gates, CHEAPER and lighter!!!!!

After hours of planning and ordering parts the solution was right in front of my eyes…...........

I think I’m still going to run 4” 26 gauge ducting through Kencraftcompany.com. There stuff is really reasonable for metal ducting.

-- Lance, Hook'em HORNS! ""V""



24 comments so far

View PurpLev's profile

PurpLev

8476 posts in 2403 days


#1 posted 11-24-2011 04:04 AM

FYI, I just dismantelled my 4” PVC runs, after experiencing poor/unsatisfying results and shortening the runs to ~5ft-10ft max (including flex) and this was without a separator inline with the DC. you might want to give the 5” or 6” another thought.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Lance's profile

Lance

376 posts in 1280 days


#2 posted 11-24-2011 04:28 AM

You might be right, I tested the separator without being sealed tonight with 10’ of 4” flex hose, there was a mild/slight difference in flow from before with the separator. The longest run I’ll have when it’s all said and done is probably 16-18’ including 4’ flex, everything else will be under 10’

What are you running now? 5” or 6”

-- Lance, Hook'em HORNS! ""V""

View PurpLev's profile

PurpLev

8476 posts in 2403 days


#3 posted 11-24-2011 04:38 AM

I’m actually going to reorganize based on the poor DC performance and until I do that (just had a newborn so time is spent with family) I am back to moving DC from machine to machine as needed. huge difference in performance.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Grandpa's profile

Grandpa

3212 posts in 1430 days


#4 posted 11-24-2011 05:01 AM

Lance I have been watching this thread. Could I ask if the design would work even better if you spaced the inside wall out to the slot in the separator? I am just asking. I have never used one of these and I am interested in learning. I am thinking you spaced the slot in to this position to gain strength for the separator floor. Could you cut another piece of plywood and slid in inside the first? This would allow the dust an opportunity to drup through the slot without stacking up on the little shelf.

View zlatanv's profile

zlatanv

689 posts in 1988 days


#5 posted 11-24-2011 05:10 AM

I was looking at the pictures and was thinking the same thing as Grandpa, seems like you might have build up on sides and that it would stop the particles from dropping off into the can. The shape and design look very good, I like the sheet metal on the inside. I was planning on making one of these and I really like your design of the curved wall.

-- Z, Rockwall, TX

View Lance's profile

Lance

376 posts in 1280 days


#6 posted 11-24-2011 05:50 AM

Grandpa / zlatanv

You’re right, I left that much material for durability of the MDF and the seal of the trash can, if you flip it over there is only .25 of a gap between the 270* hole and the daddo for the seal. I based my whole design off of this model below.

I tested it tonight WITHOUT the bag filter, not one piece of dust was thrown through!!!! 99.9% of the dust was in the bottom of the Brute trash can!!! So it’s working fine with the ledge there.

http://lumberjocks.com/reviews/1791

http://www.freeforum101.com/charlesneil/viewtopic.php?p=11836&mforum=charlesneil#11836

-- Lance, Hook'em HORNS! ""V""

View Grandpa's profile

Grandpa

3212 posts in 1430 days


#7 posted 11-24-2011 06:09 AM

Great! It is always best when plan falls together. I love that! Yeah you need an area for a seal and some strength. Did you use metal or plastic on the inside of the wood circle?

View Lance's profile

Lance

376 posts in 1280 days


#8 posted 11-24-2011 06:16 AM

Metal, I’m sealing it up right now, going to let it sit over night and then screw it in tomorrow morning.

-- Lance, Hook'em HORNS! ""V""

View Roger's profile

Roger

15371 posts in 1558 days


#9 posted 11-24-2011 03:23 PM

having a good dust collection system will reep you gr8 benefits…............. like living longer. all is looking very good. work safe always

-- Roger from KY. Work/Play/Travel Safe. Kentuk55@bellsouth.net

View Billp's profile

Billp

784 posts in 2954 days


#10 posted 11-24-2011 05:02 PM

Thanks for all the details an the great video. Iam going to make one of these. I made a cyclone for my shop vac, but this will work great for my jointer and table saw. Thanks again billp.

-- Billp

View DocSavage45's profile

DocSavage45

5388 posts in 1597 days


#11 posted 11-24-2011 06:38 PM

Late to the party. Saw some of your earlier blogs. Just started seeing this type of seperator design being built and demonstrated. You mentioned removing the bag? On the HP Dust collector? Trying for more pull?

I recently installed a furnace in my shop. Did some review on the feeding systems. Longer runs need a step down.

I like this and it is on my to do list. Never realized how much sawdust comes from a few cuts, even with thin kerf blade,

You may be fortunate to not have allergic reactions to the dust , but make sure to have the finest filtration on your bags and if you don’t already have one an air filtration system. Wood dust is a big health problem in commercial settings.

Have a great Thanksgiving!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View Ken90712's profile

Ken90712

15337 posts in 1943 days


#12 posted 11-24-2011 06:46 PM

Great job and nice to see your making such progress! Looking good. These work well.

-- Ken, "Everyday above ground is a good day!"

View Lance's profile

Lance

376 posts in 1280 days


#13 posted 11-24-2011 06:51 PM

Doc, I plan on attaching a Wynn Nano filter to the blower and not using the bag system anymore. The Nano will help out a lot!!!

We’ll see how it works when it’s all said and done, i’m looking forward installing the duct work and Wynn filter w/ a clean out box in the weeks to come. Only thing holding me back is waiting on the shipments to arrive.

-- Lance, Hook'em HORNS! ""V""

View Shanem's profile

Shanem

113 posts in 1221 days


#14 posted 12-08-2011 06:34 PM

Hi Lance,

Good to see you are putting lots of thought into the matter. If I could make a couple suggestions.
1)Larger pipe isn’t always better. Your motor on the DC has a cfm rating which is the volume of air it will pull. A larger pipe will draw the air at a slower velocity than a smaller pipe. Larger DC’s can maintain the required velocity in these larger diameter pipes. If you have a long run and many losses along the way (flew hose, 90’s, etc.), you may not have enough velocity to keep the chips suspended with a larger pipe. They would stay in the pipe and eventually build-up and clog the pipe. Your separator works on the same principle, chips loose momentum and fall in the bucket.
2)If your using metal ducting, ensure the tapered end is pointing towards the flow to the DC. May seem logical but some people install them wrong and have chips collect at the joins.

View Grandpa's profile

Grandpa

3212 posts in 1430 days


#15 posted 12-08-2011 08:09 PM

Are you still happy with the HF collector? I am leaning toward buying a complete system and I think the cyclone is the way to go. It keep the wood chips and nails etc from hitting the impeller. I will add that when you are dealing with pumps (my former company did use some pumps) that you could use pumps in a series and really make them move more volume. With HF collectors being as cheap as they are, have you considered using them in series?

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