In my last update, I submitted a reimbursement request for hardware purchased for my development of the 3D Printed BusKill USB-A Magnetic Release Version 3. I've used that hardware to create Version 3 and its documentation. I'm close to finalizing the assembly procedure and am in the process of documenting the steps.
 
View a demo of a prototype with n42 cube magnets:

View Part 1/2 of the assembly instructions:
https://www.youtube.com/watch?v=HxwEmIUqQ7w

There will be some minor fixes required for the design of the 3D printed case, particularly the face pieces, to create a better magnetic connection that resists unwanted disconnections while still easily disconnecting. 

I'm submitting https://opencollective.com/buskill/expenses/179837 to cover expenses for 16 magnets and 16 pogo pins. With these parts I'll be able to create 2-4 prototypes where I can zero in on any design changes that can make a better connection for the coupler. 

Thanks again to those who support this project! Your contributions make it possible for me to improve this design and make it so that anyone can make their own BusKill cord.