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How to install a cushioned shaped armored crystal


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This Bulova has a cushion shaped armored crystal. I have a crystal press but only round dies so not sure how to install the crystal. Also, it looks like there is a nylon or plastic gasket. Would this still take a round gasket and if so how should I measure for that?

 

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gasket.jpg.b983267109b0b11066e2733736e2cca9.jpg

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Wow, that would great. I'm using a Bergeon with M6 threaded dies.

So these types of crystals are meant to be inserted with special dies? I was wondering if there was another method that I didn't know of as I would assume there are so many different non round crystals that it would be impractical to have dies for them all.

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