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So you’ve bought a dust collector. Now, you must hook it up to your shop equipment. Here are some hints and tips to help you accomplish that more smoothly.
A central dust collection system provides the most convenient means for connecting a dust collector to several pieces of equipment. The illustration shows a typical system. Plastic pipe and fittings make installation relatively easy.
Here are some pointers for constructing your system:
Air and wood particles moving through the dust collection system quickly build up static electricity charges in any non conductive hose or piping (hose or piping not made of metal). When this static buildup discharges, it could lightly shock the operator or even ignite the flammable wood dust particles inside the piping. If the sawdust burns fast enough, you have an explosion.
A static ground for nonconductive ductwork can prevent static-charge buildup and potential disaster. To install one, simply run a wire along or around the pipe, as shown in the illustrations. Insulated or uninsulated 18- or 20-gauge copper wire, either solid or stranded, works fine.
At pipe joints, leave slack in the wire or install bayonet connectors (Radio Shack has them) to facilitate opening the system in case of a clog. Run a ground wire along each branch, and splice each into the main wire.
Connect the ground wire’s conductor to the dust collector’s metal frame or housing. The other end should extend to the outlet port on the tool, but it doesn’t need to connect to anything, except to keep it in place. (Think of the wire as an antenna rather than as a conductor in a circuit.)
The coiled wire core in some flexible plastic tubing allows easy grounding. Simply strip the plastic away from a few inches of the wire core, then connect the wire to your system ground, as shown in the illustration.
For maximum efficiency in a branched system, shut off the flow from all ports except the one in use. To do that, install blast gates.
You can buy metal or plastic blast gages for various pipe sizes from a number of woodworking-equipment dealers. Or, refer to the drawing above to build a wooden blast gate.
The connectors shown are made from a PVC pipe coupling cut in half and epoxy-glued into place. You can alter the dimensions and couplings shown to fit different sizes or types of pipe.
To mate the 3″ or 4″ system to most of your tools, you’ll need hoses and adapters. The best way to do this is with tapered (not stepped) transitions.