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Forum topic by ChuckC posted 870 days ago 569 views 0 times favorited 9 replies Add to Favorites Watch
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ChuckC

569 posts in 1133 days


870 days ago

I just joined the ranks of many of my fellow LJ’s and picked up a HF 2HP DC. I had a coupon for $139 and couldn’t pass it up. It’s been sitting in my shop, assembled and unused, for a couple of weeks now. Like everything else I do I’ve been agonizing over my duct work and how to go about it. I also spent hours on this site looking at the solutions other people came up with and plenty of time on the Bill Pentz site. I think the more I read the less I learn :-(
In the end I figured I’d like to have one fixed run going down a single wall (around 20’) and I’ll plug my stuff in along the way (4 tools). For my other tools I’ll have a 4” flex hose that they will share and i’ll just plug it in as I need it.

My question concerns the one main running down one of the walls.
I know that a 5” main line is ideal for this DC. Like everyone else, sourcing 5” components is a lot harder than 4”. So, for such a short run (~20’) will the increase to 5” from 4” make that big of a difference?




9 replies so far

View brtech's profile

brtech

477 posts in 1120 days


#1 posted 870 days ago

20’ is not short. However, it’s the only practical choice. Just don’t do anything else that would lower the airspeed, like put the flex at the end of the 20’, or use 90 degree bends anywhere.

Get the Wynn filter!

View GaryK's profile

GaryK

10263 posts in 2186 days


#2 posted 870 days ago

I have a 2HP system and I use the 4” thin wall PVC stuff with no problem. My longest run is about 50 feet.

It had a 5” duct also, but I reduced it. A lot easier to go to Lowes or Home Depot to get more when you need it.

Here’s a little video I did for the dust collection in my shop.

-- Gary - Never pass up the opportunity to make a mistake look like you planned it that way - Tyler, TX

View ChuckC's profile

ChuckC

569 posts in 1133 days


#3 posted 870 days ago

My plan is to run about 20’ (probably a little less) down one wall directly from the DC. There will be no 90’s but probably 2 45’s. It will also be only around 3’ off the floor which is closer to the tool as opposed to running it on the ceiling. Along the way I’ll have 4 wye’s (each with a blast gate) that will branch off as short as possible length of 4” flex tube to the tool.

View dbhost's profile

dbhost

4743 posts in 1430 days


#4 posted 870 days ago

I run 2 4” runs, one upper, one lower. I have drops that simply have a hose hanging off of them to connect to bench top tools… So from the HF DC, I go 5” in and out of the Thien separator, then I go to the 5×4x4 wye, in to the upper and lower trunks. I pull from both top and bottom of all of my major tools, this approach has been very effective for me. I wish I had a particle counter so that I can tell you EXACTLY how effective. If anyone wants to rent me a Dylos meter, let me know!

-- Manufacturer of fine quality sawdust since 1984. Comments and advice on my shop welcome. Check it out at http://lumberjocks.com/dbhost/workshop. Gladly accepting shop build donations!

View HorizontalMike's profile

HorizontalMike

5672 posts in 1112 days


#5 posted 870 days ago

This may be obvious but why don’t you run TWO 10’ runs, one in each direction, with the DC in the CENTER? This will cut your overall distance to each machine in half.

-- HorizontalMike -- "Woodpeckers understand..."

View ChuckC's profile

ChuckC

569 posts in 1133 days


#6 posted 870 days ago

Great info. I plan on running a 5” into and out of a Thien too. From there a 4” (I think) down 1 wall and leave another 4” for on-demand use. I’m trying hard to not over think this but I fear it’s too late ….

I originally had the DC in the middle, on the wall. That displaced the tools that were there before and the new shop layout got ugly and very inefficient. I have everything on wheels so I spent the better part of a day playing Tetris-With-Tools trying to find the best fit which put the DC on the back wall, in the corner, facing the front. I’ll only have a couple of 45’s to get the pipe at the right height and it’s all straight from there.

View greglwood's profile

greglwood

10 posts in 871 days


#7 posted 870 days ago

I use 4” and have runs of about 25 ft which along with 2 1/2” split that goes up and over and backdown on top of the blade of the table saw. I don’t have any issues.

-- Greg, Tennessee, http://www.sawstopcentral.com

View crank49's profile

crank49

2380 posts in 1169 days


#8 posted 870 days ago

I run a 4” and a 2-1/2” open at the same time on my HF DC and it works great. The 4” is connected to either the TS or the Joiner while the 2-1/2” is connected to the BS or belt/disk sander. I don’t use the DC on my planer because that machine makes way too many stringy chips for its 2-1/2” port. It needs the higher pressure of the shop vac so that’s what I use on it.

Over all I think you have a good plan; just go with it and get it running. It’s really nice to run the TS and not have any thing to clean up afterwards.

-- Michael :-{| Diapers and politicians both need to be changed often; and for the same reason.

View NBeener's profile

NBeener

4805 posts in 1372 days


#9 posted 870 days ago

I also allowed my HF DC to acclimate to my shop for a few months.

Once it reached Equilibrium Moisture Content, I let ‘er rip :-)

Enjoy !

-- -- Neil

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