Remixed from the version uploaded by @ericsnis
For magnets: I just used what I had on hand, which aren't very strong, but do the job. You can purchase it here: Aliexpress
Pause at layer 24 (if using 0.2mm layer height) or 2.6mm, insert magnets using double-sided tape then resume.
Supports: add to areas in green.
Iterative revision to both suit my aesthetic preferences as well as added a slight functional upgrade with the new grip texture on the sides.
Images show it printed with:
The blades fit super tight as per the original model.
Created from STEP file for better resolution of curved features.