I have an early version of this made from tubular pipe but then I saw Twicepipes drain contraption and thought mine could be improved, I espicially liked the hose bibb. It's all 2" pvc. The grey fernco goes on the sink tailpiece and the black fernco goes on the drain pipe once the ptrap is removed. Run the water in the sink so there's no cross contamination. My old version was long enough to stick out from under the sink so I'm not jammed up under there. I keep it steady with a bungee cord that attaches to a bracket that hangs on the lip of the sink. Version 2.0 is long enough to do the same thing. Makes for a very clean drain snaking even when dealing with black grease.
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Undersink drain contraption