|Forum topic by NBeener||posted 01-05-2011 01:29 AM||6015 views||4 times favorited||46 replies|
01-05-2011 01:29 AM
Some of you have probably heard of the ”stovepipe modification” for the Harbor Freight 2HP Dust Collector.
Long story short … you replace the existing 5” flex hose (running FROM the impeller TO the housing that holds the filter and plastic collection bag) WITH 5” single-wall stovepipe and a couple of 5” 45 degree elbows.
It looks like this … all taped up with “proper” duct sealing tape:
Sealing other potential infiltration points:
While I’d definitely like to plumb my shop, and put 5” or 6” galvy throughout, with drops to all the machines, blast gates, etc., etc. —we’re likely to move within the next year. Not sure how adaptable this setup would be to the “next” setup….
So …. my current plan of attack….
I’m running WAY too much flex hose (originally, nearly 40’, in total), and it’s pulling too much efficiency out of my system, when you factor in the 30gal chip separator, too:
- moved my chip separator MUCH closer to the DC
- replaced THAT 10’ flex hose run with 4” galvy duct, a couple of 45 degree elbows, and a couple of short lengths of flex hose at each end:
I’m going to ….
- put one more 4” 45 degree galvanized elbows the remaining (intake) port, on the chip separator lid, to ease the torque on the hose … that … makes it want to kink,
- either .... live with my 4” 28’ long Rockler DustRight DC flex hose, for now, or …. replace IT with a couple lengths of 4” 26ga, galvanized duct, coupled together with a couple of short lengths of flex hose … to allow greater in-shop maneuverability to and between the power tools
- OR ... potentially … buy two blast gates for the Wye off of my DC, and then … run one port TO my chip separator (as described above), and … with the other port … bypass the chip separator, entirely, for the most CFM-demanding of the machines (ie, planer, jointer), using just enough flex hose.
The Placebo effect, on the suction, has been excellent so far !
Because I have a fair bit of time into this (and only a couple of bucks), I’ve convinced myself that these tweaks made a world of difference !
In truth …. there IS some difference. You get a sense for the suction at the end of the final hose … over time. I’m sure it’s a chunk better, now. Where it used to leave some shavings on the bed of my jointer and planer, now there are a scant few.
Using the “separator bypass” approach … running the hose straight from the DC to the planer/jointer … there are NO shavings left behind !
Cleaning up my act …. while I await the arrival of The Really Big Forstner Bit … to get the vise installed, and finish my workbench :-)
-- -- Neil