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Most bullet mold marbles have the rough ground area where the glass is ground off at the area it was poured into the mold. It was a large opening to make sure the glass filled the mold before hardening. Peace,Galen

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Mike...There is a "worn" area on each. The pic shows what I think you're trying to describe. They all measure the same in a template. The thing that got me thinking they may be "mold" is the grainy looking texture of the glass. It looks like a wood grain, but not orange peel, if that makes sense? :blink: and then that line that completely circles the marble.

Galen, would the odd looking worn area in the pic be what you're describing? It looks like it was was ground down in some way.


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The American made examples were mold pressed - more like injected. The foreign made examples are Prosser molded - it's a small hand press arrangement - a little bit larger then a pair of pliers.

With the American method - the glass wasn't poured - it was more like 'forced' into the mold cavity. The finished item looked like a golf ball on a tee connected to a base - kind of like a globe on a stand. This large piece was placed into the annealing oven. After it was cooled down - the 'tee' and base part were knocked off of the ball. - thus the rough spot.

With the German method - a large glass rod was heated up and a sphere was then pressed out of it with the hand tool - sometimes the tool would be mounted to a work bench.

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