Did you know that putting a magnet in a steel cup will increase its strength by up to 4 times? I wish I had known that before I had made my saw holders. Then again, four 1/2" magnets seem to hold my badaxe bayonet just right. This portion of the build was relatively simple, I used a small forstner bit in a hand drill to bore out a few holes, dropped the magnets in and laminated a thicker piece on top. Nice and easy.