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WZ9V
I'm curious as to how you machined the bolt heads with the ball head mill.
I used 1/2 inch (~13mm) spherical magnets on my printer, with a 1/2" ball end mill bit in my cordless drill. Health and Safety be damned, :) I put the M5 SHCS's into the rods, held the rods in front of the drill, and pushed by hand until they were milled to a cup. Since I used black screws, it was easy to see how deep that I was cutting since the cup was shiny metal and the remaining cap was black. Just keep milling until the silver reaches the edge of the head, and that's it. There's no reason to mill any deeper. I did 24 screws on one 18V battery charge with energy to spare.....
