Reply by Loren

The hose is tied up by a piece of bootlace. I move the saw around
on a pallet jack for different cuts on larger parts. The length of the
tube and bootlace arrangement should provide an adequate
range of movement for most of my cuts.

The end on the hose has a stepped adaptor I got a Lowes awhile
back. I think it was like ten bucks and I bought it for something
else that didn’t work out. I had to shorten it and bush it out
with tape to make a friction fit in the hole on my saw guard.
I don’t especially recommend the stepped adaptor because it’s
overpriced for this application, but it works ok.

I got the hose and 4”/2” fitting from Woodcraft.