Maybe yes, maybe no. They have stepped cone type adapters at most places,
but nothing seems standard in the world of connections. Duct tape on the
JET sander to use the same 2 1/2 setup that quickly and easily seals on the
Delta bandsaw. Description of the connections are the same in the
respective manuals.

That said, going down from 4" to a 1 1/2 isn't as good as just slapping my
old noisy wet/dry, with its high vacuum on my Bosch sanders. I'm sure the
fluid dynamics folks can tell you why.

"JT" wrote in message
...
I have a need to convert a 4 inch dust collection system to a smaller
1 1/2 inch connector on a belt & disk sanding station. Is the standard
size for 2 1/2 pipe, a inside or outside diameter? If it usually a
outside diameter, what is the usual inside measurements? If I purchase
2 1/2 inch flexible pipe where can I find the correct fittings to mate
the 2 1/2 inch pipe to the 1 1/2 in connector on the sander?