06-10-2016, 05:04 PM
My Dust Cobra is piped with 3" PVC. Works great but I needed an adapter. A little on line research turned up the concept of heating and resizing PVC. For a small change just heat and squeeze with a hose clamp. I wanted a little more so I sawed 4 straight / wedged slots and made a wooden plug to clamp to. Stood a piece of pipe on end in a pot of water and brought to a boil then slid in the plug and tightened the clamp. Came out great.