Ray Carson - Lawrenceville, NJ
While searching across the "interweb" for dust collection items on the cheap, I came across this at Rockler. Maybe some of you have already seen this item.
An adapter that provides an easy solution for connecting schedule 40 PVC to 4'' hose. Item #: 56472.
I'm in no way associated with the company, I'm just passing information along to my fellow woodworkers.
I'm sure there are many, many ways to make this fitting and I myself have seen countless videos on YouTube on dust collection DIY. For me, this is a very affordable solution to solving a common problem. Thanks Rockler !!