Bosch GCU18V-30 Cut-Off Tool to Rotozip Circle Cutting Attachment Adapter

I want to cut ceiling light holes in Drywall with my Bosch GCU18V-30.  Bosch doesn't sell one so I designed this to allow me to use the Rotozip Circle Cutting Attachment.

Printed 100% Infill with 0.8mm nozzle and 0.3mm layer height.

Link to the circle cutting attachment:
https://www.amazon.com/Circle-Cutting-Attachment-12-Dia/dp/B00FX9G27I

Link to the Bosch Cut Off Tool:
https://www.amazon.com/BOSCH-GCU18V-30N-Brushless-Cut-Out-Tool/dp/B0BLJ2HBNY/