When that razor was made there were no Norton 4/8's or Naniwas etc/neither were epoxies. I think that if they would have had access to them they would have readily used them. However there are always purists and I hope there always will be!

With that said;

Once mixed together; JB Weld is a medium dark grey and for everything that I've used it for it's never let go!

Just a thought!