Magnetic Couplings for Dust Collector

Background

These dust collector adapters use embedded 3/8" x 1/8" magnets to connect to each other. Each coupling uses 8 magnets, alternating N & S poles. This ensures that any two couplers can connect together.

The models are designed to have a pause inserted into the print process so that you can place the magnets, then resume the print.

I used these magnets: https://www.kjmagnetics.com/proddetail.asp?prod=D62-N52

Models

There are three models provided here:

1. 4in_Hose_Adapter.stl
   • This is the ‘standard’ adapter that can be connected to a 4" dust collector hose.

• 4in_BoardMount.stl
  • I used this to connect to my table saw. I mounted this to a board, and then connected a short length of hose to the back of this to the bottom of my tablesaw.
• 4in_DirectMount.stl
  • This was used to connect to my jointer, I cut out a board that fit over the dust collector port, then screwed this adapter onto the board.

I used Solid Edge Community edition to create the models, but Printable's will not let me upload the *.par files. I have exported *.stp files in case you need to make modifications.

Printing

I use Cura, and I use the ‘post-processing’ script “Pause at height” to insert a pause at the layer right before the magnet holes are covered. I find this layer by first slicing the model, then scanning through the layer view.

When the print pauses and you insert the magnets, it is very important that you alternate ‘north’ and ‘south’ orientation of the magnets. This allows any two couplers to join together.