Yes, the razor can become magnetized , especially if it is slid along the surface of the platform when placing or removing the blade. To mitigate that occuring , I counter sunk the magnets from the back side , leaving about 1/8 in of wood to the top surface. I had it happen once when using a experimental magnetic holder in the bathroom. I demagnitized it by passing the blade through a tool mag/demag as below.

Name: dmgtzr.jpg Views: 238 Size: 26.3 KB