How can I source strong magnetic strips? Preferably adhesive as well. Also, I need to be able to cut the strip into desirable lengths. If I could see the field strength rating that would be great, but if I can't I do need them to be really strong. Also, I require that the side of the magnetic strip facing me has only one pole pointing toward me.
Alternatively, I'm also open to the possibility of making one myself if it's cheap and can be done easily.
Note: I couldn't find any good tags for the post, so if anyone has any ideas (magnetic-strip?), please feel free to edit away!