Build Plate Leveler 1/2" Diameter x 3/16" Thick

Modified to fit Harborfreight magnets 1/2" diameter x 3/16" thick, since that was all my store had in stock. Works with Duplicator 3,4, as well as Replicator

Harborfreight item#98405 "Craft Magnet Discs" is what it is called and they do not sell them online, atleast that I could find, but they did have them in the store on the shelf.

Print with supports, and I recommend putting the magnets in while the build is still warm off the printer. I used a little hot glue and stuck them in, worked like a charm.