i don't have a lapping plate. what is the advantage of using one? could i something else instead?
my greatness it stinks!!! dad wondered what i had been doing in the shed cause he reckoned it stunk to high heaven.
Any hard flat surface will work just need it water proof for wet sanding, I also use 320-400 grit for lapping, my glass plate is a piece of tempered glass from a set of old scales