While playing with my brand new rolling mill I have discovered a
tendency for it to dish the sterling silver I work in. For
instance, I tooka piece of 34 thou (I can’t get used to gauge,
sorry, it must be the engineer in me) sheet about 1.5 inch
square, annealed and rolled it down, gradually, to around 29
thou, rolling in both directions as I wanted a larger square. The
sheet already shows signs of buckling and thickness varies
between 30.5 and 29 thou - generally thinner at the edges, hence
The mill rolls appear perfect, I certainly can’t see any central
gap and feeler gauges report a constant gap across the rolls.
Should I be annealing more often or something else ? I suppose
the rolls could be deflecting under load but heck - what is a
mill for after all.
Andy Parker, Agate House Lapidary
Ulverston, Cumbria, England