I made a different vacuum adapter and it fits the rigid 1-7/8 hose , it has a extra little flange on it an offset for the plexiglass and support all the way to the back of the sled.
I made a little knurled piece to put 3/8 nuts in because I didn’t really like the wing nuts
I also made a silly little tool to help put the nuts in while you’re trying to assemble the machine cuz I’ve had to take the sled apart a couple times to mess with the arms
I’m not really trying to push anything I’d gladly send them to the not shop I don’t know how at the moment
Www.bearfulmer.com in the store, all are free downloads.