Thanks RC, Interesting to read about different approaches.. I should visit PM more often.. except I don't much care for the attitude displayed by some over there...

Hi John,

You are correct about residual magnetism, the electromagnet has a demag setting that you use to remove the residual magnetism when you finish grinding, but if you just flick the magnet on/off like Josh is doing in this video it keeps everything in place while setting up.

So here is the reason for making the mag transfer block.

Part 1 Setting up.

Setup for Grinding Plane Blades - YouTube


And part 2 with the grinder running.

Grinding the bevel - YouTube


Regards
Ray