"Bald eagle" wrote in message
...
Thanks everyone for replies - will try the Stanley blade very gently
later. Having had a chance to look more closely though I'm not sure that
the marks are actually on the hob. They seem to be under the glass, which
is odd and if I'm right will not be reversible. Will post what happens.

JC


AFAIR, Homecare Hob Brite will clear marks which "appear to be under the
glass" - agree with earlier poster about the elbow grease

FWIW my halogen hob responds well on a day-to-day basis to glass wipes - 80
pack from Poundland