Vac Attachment - Table Saw Dust Bag

In my classroom shop, I have a table saw with a dust collector bag underneath it. Cleaning it out can be a pain. The attachment is design to avoid the constant clogging that occurs from just placing the end of the hose into the bag.

The attachment works pretty good.. Rarely do I have to stop and unclog it while cleaning out the bag.

My 3d printer has support material so this is not optimized for being printed with out supports.