Tom Grezek
New member
Any chance my setup could have vortex/turbulence within the ducting causing poor extraction?
I first tested the system using some small blocks (1"x0.5") and noticed they rattle around in the pipes for a long time. Some wouldn't flow through until I shut down the system. It seems like there is turbulence at full power causing a dead spot in the ducting, that changes when the blower speed reduces during power down.
I hooked up my Hammer A3/31 Planer/Jointer with disappointing results in chip extraction. About 1/3 of the chips seem to end up on the floor and on top of the material being cut, which presses the chips into the material being planed.
Here's my setup:
The Planer/Jointer has a 120mm (4.75") port connected to a same sized flex host about 10 feet long, which connects to Nordfab 6" ducting that goes straight up through the ceiling to a 45, then into a Nordfab ridged flex hose with a very slight curve, then into the CV 1800 dust collector. My total ducting run is about 25 feet with 13 feet being vertical from the shop floor up to the attic.
I also notice when I power down that a pile of dust will suddenly flow from the ducting into the cyclone about 5 seconds after hitting the off button. Again-it seams as if the dust is getting stuck in a "dead spot" at full power, which then changes when the blower powers down.
Let me know if you have any thoughts ideas.
I first tested the system using some small blocks (1"x0.5") and noticed they rattle around in the pipes for a long time. Some wouldn't flow through until I shut down the system. It seems like there is turbulence at full power causing a dead spot in the ducting, that changes when the blower speed reduces during power down.
I hooked up my Hammer A3/31 Planer/Jointer with disappointing results in chip extraction. About 1/3 of the chips seem to end up on the floor and on top of the material being cut, which presses the chips into the material being planed.
Here's my setup:
The Planer/Jointer has a 120mm (4.75") port connected to a same sized flex host about 10 feet long, which connects to Nordfab 6" ducting that goes straight up through the ceiling to a 45, then into a Nordfab ridged flex hose with a very slight curve, then into the CV 1800 dust collector. My total ducting run is about 25 feet with 13 feet being vertical from the shop floor up to the attic.
I also notice when I power down that a pile of dust will suddenly flow from the ducting into the cyclone about 5 seconds after hitting the off button. Again-it seams as if the dust is getting stuck in a "dead spot" at full power, which then changes when the blower powers down.
Let me know if you have any thoughts ideas.