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If tempering is required, it is the last step in the process. The tempering of symmetric or complex shapes requires extensive glass knowledge, the proper equipment, and process conducive to repeatability. Gillinder Glass employs all three with its well-seasoned team of engineers, traceable process control, and two efficient and computer controlled tempering lehrs.


The balance of the process is proprietary, however once the heat strengthened piece of glass completes the strengthening tempering process, samples are examined using a polariscope and depending on application may undergo thermal shock or impact testing as well.

Lehr with various globes
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