Quick Connect 4 inch Magnetic Dust Connection

thingiverse

Made this to easily switch between different tools in my shop with my 4 inches harbor freight dust collector. Print 2 of these and they will slot together (should require little to no force to get it). Make sure that you don't mix up the magnets polarity or it will not work. I used magnets left from other project, they are neodymium cylinder of 4mm (5/32 inch) diameter on 24 mm ((up to 1 inch) long so you can use any cylinder magnet of 4mm diameter. I used 20 magnets per adapter because I have a lot of them and I wanted the connexion to be very strong despite of the size of the magnet but you don't have to use as many as me, just fill the holes you don't use with some hot glue to keep the connector air tight. I printed it with 1mm nozzle and 0.5mm layer because it is fast and it doesn't have to be pretty. Very happy with this design.