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Dust Collection - Table Saw and Router Table

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Blog series by EEngineer updated 11-10-2013 06:25 PM 3 parts 14010 reads 11 comments total

Part 1: Dust Separator

08-10-2013 09:48 PM by EEngineer | 10 comments »

Two of the biggest sawdust creators in the shop – tablesaw and router. I have dust collection of a sorts for both of them, but it is primitive. I have a small length of 2 1/2” hose that moves from one tool to the other and no autoswitch. So, first I move the hose connection, then I turn on the vacuum, then I can run the tool. The only filtering is is that inside the shopvac and those suckers are $14 each! I need a better solution. I have been reading about vortex dust separator...

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Part 2: Vacuum Valve

11-09-2013 05:02 PM by EEngineer | 1 comment »

Whew! It has been a while since I added anything to this. But it took a while to get this part right. I needed a way to steer the vacuum from the shopvac and Dust Deputy to either the table saw or the router table. Inspiration for this design came from here . In principle the valve is pretty simple: Just a flapper moved by a rotating shaft to steer the vacuum to one port and seal the other port off. To move the shaft I borrowed the design from the seed link above. I ordered a couple of ...

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Part 3: Control Box

11-10-2013 06:25 PM by EEngineer | 0 comments »

To sense current and turn the vacuum on I used a variation of the circuit that I developed for miter saw dust collection (find a discussion of that circuit here). In this case, though, I need two current sense circuits: one to switch on the shopvac and the second to activate the solenoid on the vacuum valve when required. Here is a schematic: Note the way the current transformers are wired. The line feeding the table saw only goes through the current sense transformer that activates...

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