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Vitro or CAC?


Greeneyesgreenthumbs

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Vitro's probably right.

I know if I had it in hand I would want to count ribbons and trace the pattern very carefully to assure myself it wasn't Pelt or Akro.  I don't know that I would have considered CAC.  

Vitro could get ultra-twisty.  Here's one of mine which is unmistakably Vitro which yours made me think of.

e980741f03f8e946417c8c322b1743e8.jpg
 

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All Vitro"s that did not spin correct in the roll groove. Errors. The hot glass glob has to spin in all different directions on its own axis while in every roll groove. If it spins just a few turns in one direction. You end up with a abnormal twist not planned standard production.  Glass to hot or to cold, oversize or undersize just a few things that can cause this abnormal twist. Most are separated and discarded if caught before packing for sales. Not uncommon for any machine made marble company. It happens frequent in a 24hr. day at 250 marbles per minute. No special equipment, no experiment, just a error, non standard production. 

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