Well, talking is one thing. Numbers and pictures count.
Dust collection for my saw was terrible. Common Ridgid contractor saw. I have a 1 3/4 jet CD. Less than perfect ductwork, but still, at the saw a 4 inch hose had 14 M/s flow.
With my closed base 4 inch hose, 2 1/2 to shroud, the flow through the finger hole in the throat plate was .4 M/s.
Foamed the top to base ( we can on a contractor as the trunnion is mounted to the top, not base)
Gasketed the box
Two door sweeps from HD. They slip out of the guide so easy to bend.
Plate and gaskets on the back edge.
The box and outfeed table and braces was tricky as the motor swings almost as high as the table on full tilt. Don't want it vacuum tight as it takes airflow to carry dust, but the flow was so far away from the blade, it was doing about nothing. I think a great improvement would be to swap hoses, so the 4 inch to a larger port on the shroud, and just the 2 1/2 to pick up what falls in the box. Still a little sloppy I need to clean up, but wanted to share my results.
4.2 M/s flow on the plate! Yea, 10 times the airflow. Crosscuts gave almost no top side dust. Ripping a face with the blade exposed will still fill your pockets with sawdust. Only mitigation will be a top side hose.
Am I happy? Much better. But darn, I still want that Harvey 300 and G700 pair but still squirming about the $4K bill if I can justify it. But for only a few bucks, a big improvement. My DC ductwork is very poor and if I keep the Jet, it will get proper size smooth run metal dust. I don't know if it is totally the duct, or loaded filter, but my at-hose is 1/3 of spec. I expect closer to 2/3.
Dust collection for my saw was terrible. Common Ridgid contractor saw. I have a 1 3/4 jet CD. Less than perfect ductwork, but still, at the saw a 4 inch hose had 14 M/s flow.
With my closed base 4 inch hose, 2 1/2 to shroud, the flow through the finger hole in the throat plate was .4 M/s.
Foamed the top to base ( we can on a contractor as the trunnion is mounted to the top, not base)
Gasketed the box
Two door sweeps from HD. They slip out of the guide so easy to bend.
Plate and gaskets on the back edge.
The box and outfeed table and braces was tricky as the motor swings almost as high as the table on full tilt. Don't want it vacuum tight as it takes airflow to carry dust, but the flow was so far away from the blade, it was doing about nothing. I think a great improvement would be to swap hoses, so the 4 inch to a larger port on the shroud, and just the 2 1/2 to pick up what falls in the box. Still a little sloppy I need to clean up, but wanted to share my results.
4.2 M/s flow on the plate! Yea, 10 times the airflow. Crosscuts gave almost no top side dust. Ripping a face with the blade exposed will still fill your pockets with sawdust. Only mitigation will be a top side hose.
Am I happy? Much better. But darn, I still want that Harvey 300 and G700 pair but still squirming about the $4K bill if I can justify it. But for only a few bucks, a big improvement. My DC ductwork is very poor and if I keep the Jet, it will get proper size smooth run metal dust. I don't know if it is totally the duct, or loaded filter, but my at-hose is 1/3 of spec. I expect closer to 2/3.