Making a magnetic clamp/stop
I'm interested in making a magnetic featherboard/stop that will work on my steel tool tops. It looks like rare-earth magnets are the way to go but how big should the magnet be to safely remain attached to the table if placed under stress. I see that you can buy some magnets with holes for screws already drilled and it seems like it would be pretty simple to attach a few to some wood blocks and make a bunch of good easy stops. Lee Valley says the 3/4" and 1" diameter ones are super strong. Would they be good enough? Thanks very much for any advice!