[ATM] Quandry over steel washer tool

["Mark" <MarkSKowalski@comcast.net>]

Started today, a 12" plate blank using a stone tool topped with steel
washers.
 
Unfortunately, when I made the tool, I didn't realise that the washers had a
bit of variation in thickness.  If
I had, I would have put them on the blank and poured the stone over them.
But, as it was, I made the
stone "blank", then epoxyed the washers to its top.
 
So now, after 6 hours of hogging with #80, only about 1/3 of the washers are
showing contact and
the blank is not deepening very fast.  Have about 10% of the sag after the 6
hours and the wear
is not well centered.
 
Should I gut it out and continue?  Should I trash the tool and start a new
one?  I have no more washers but
I do have 1x1 tile...but I've heard that tile is not the best thing to start
a flat blank with.  I do have another
38 pounds or so of Hydrostone :-)
 
Any help is appreciated!
 
Mark
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