ok, I've searched the garage high and low and can't find what I'm looking for. Off to the hardware store shortly. My vision is a length of that 1/2" CPVC pipe, on the business end a 1/2" CPVC union. Instead of taking apart a disposable razor, I see a double edge flexible razor blade- the old school kind. I think this should fit inside the union, and the lip inside the union should prevent the blade from slipping, or the need to glue the blade in place. Then, when blade is spent, it can be easily reversed, or disposed of. On the drain end I'm going to search for a reducer to attach hose directly to the length of pipe. If anyone patents it and gets rich, throw me a nod by calling it the Li'l Stinker.