Screwdriver Сarrot
circuitlab
Screwdriver Сarrot.
You can print the entire piece with a stop to place the magnet. And you can separate it from parts, and then glue together.
Update 2019/10
ScrewDriver-Magnet-D10x4mm.STL
ScrewDriver-Magnet-10x10x4.STL
Parts links below: (Just copy and paste the link into browser to open it.)
Neodymium Magnets D10x4mm - http://ali.pub/3wax34
Neodymium Magnets 10x10x4 mm - http://ali.pub/3waxpo
Links to used tools:
NOGA deburring tool and Blades - http://ali.pub/2z2ah5