M
McRabbet
I've been working for some time with one 4" PVC duct run from my under-floor Dust Collector (DC) to an outlet behind my Table Saw (see my earlier thread). I have a Chip Separator connected to the outlet, then a longer length of flex duct connected to my saw which I move to my planer or jointer when I use either of them. It has been a major PITA to move that flexible hose. I needed to improve it and started by building my own Blast Gates to segregate exhaust flows. Here's how they are made (mine are 4", but any size can be made this way):
[URL="http://www.ncwoodworker.net/pp/data/378/medium/BG-1.JPG"] [/URL]1) 2) 3) 4)
1) Pair of 3/4" Birch Plywood squares with holes cut for 4" PVC Connector and 1/4" Baltic Birch layout with gate and gate socket ready to cut out on bandsaw;
2) PVC Connector outer surfaces roughed up with rasp to provide glue bite surface. Used PRG and glued connector into plywood squares, flush with outside of plywood faces;
3) After glue dries, cut connector in half and rounded edges. Turn squares around, glue and screw together with a gate socket sandwiched in between. Sanded edges of gate and inserted into slot;
4) Normal finished gate has 6-32 x 1/2" bolt in tip of gate to retain gate slide.
At the Dust Collector, the "Y" connector gets two blast gates. I will actuate one or the other from above, so one will open and the other will close. Here's the setup as a Work in Progress:
5) 6) 7)
5) Blast gates are connected to the "Y" with short connector duct and all 3 pieces mounted on a small platform;
6) View from the inlet side, with one gate up and one gate down. Note the nylon cord in the right gate;
7) The "interaction" secret: the 6-32 bolt is removed and left and right gates are interconnected by a nylon cord threaded through a hole in the bottom of each gate and over pulleys mounted under platform -- later, I will connect nylon lines through floor to a control handle in shop. I'll add springs in the lines to keep it under tension.
They may not be "EcoGates", but they should work fine -- hence "Cheapo Gate"! :lol: More to come when I install it! Rob
[URL="http://www.ncwoodworker.net/pp/data/378/medium/BG-1.JPG"] [/URL]1) 2) 3) 4)
1) Pair of 3/4" Birch Plywood squares with holes cut for 4" PVC Connector and 1/4" Baltic Birch layout with gate and gate socket ready to cut out on bandsaw;
2) PVC Connector outer surfaces roughed up with rasp to provide glue bite surface. Used PRG and glued connector into plywood squares, flush with outside of plywood faces;
3) After glue dries, cut connector in half and rounded edges. Turn squares around, glue and screw together with a gate socket sandwiched in between. Sanded edges of gate and inserted into slot;
4) Normal finished gate has 6-32 x 1/2" bolt in tip of gate to retain gate slide.
At the Dust Collector, the "Y" connector gets two blast gates. I will actuate one or the other from above, so one will open and the other will close. Here's the setup as a Work in Progress:
5) 6) 7)
5) Blast gates are connected to the "Y" with short connector duct and all 3 pieces mounted on a small platform;
6) View from the inlet side, with one gate up and one gate down. Note the nylon cord in the right gate;
7) The "interaction" secret: the 6-32 bolt is removed and left and right gates are interconnected by a nylon cord threaded through a hole in the bottom of each gate and over pulleys mounted under platform -- later, I will connect nylon lines through floor to a control handle in shop. I'll add springs in the lines to keep it under tension.
They may not be "EcoGates", but they should work fine -- hence "Cheapo Gate"! :lol: More to come when I install it! Rob
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