Quote:
Originally posted by Tom Littleton
We made another adjustment to come up with the 83 but the 83 never really took off in the marketplace.
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which is worthy of note since the kugler opaques were (I believe) the target glasses the 83 was shooting at. The kugler opaques do not really fit the SP87 or any other commercial clear batch out there on either L.E.C. or viscosity or annealing curve or phase of the moon.
Gaffer's opaques ( and mine) were engineered to fit the current clear batches, but not the cullets.