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They’re cheap! All you need is some PVC and plastic laminate.

A central dust collection system is a big improvement to any shop, but the cost can really add up. With commercial gates going from $4 to over $50 each, building your own can help lower the bill. I make my own gates from a little bit of MDF, some PVC pipe or coupling, a few scraps of plastic laminate and plastic laminate adhesive. This design will work for 4″, 5″ or 6″ blast gates (the dimensions below are for 4″ gates).

Before you begin, note the diameter of the hoses or pipes that you’re planning to hook up to the gate. With this design, you can make the inlets and outlets of each gate any diameter you wish, to fit your system. On most commercial gates, the inlet and outlet sides are the same diameter.

In my shop, I run 4″ or 6″ flex hose between each machine and the gate. That means that the PVC inlet side of the gate must fit inside a hose.  I’ve found that flex hose with plastic reinforcing works best.


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