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cosmicdave
Expert Boarder
Posts: 127
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Are shooting glasses made from a material that is safer from regular eye glasses? If so can that material be made into prescription lenses?
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TramadolChild
Expert Boarder
Posts: 129
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# # # # Are shooting glasses made from a material that is safer from # # regular eye glasses? If so can that material be made into # # prescription lenses? # # # Usually not. They are made for keeping flying brass and lead spatter # from hitting your eyes or the lenses of your prescription glasses. It's # less expensive and more convenient for me to just wear something over my # prescription glasses when shooting to preserve them from nicks. I use # snap-on, yellow sun-glasses or shooting glasses that go over my # prescription glasses .
Ever see one of those 'executive toys' that consists of metal balls hung from a frame lined up so that if you lift and release one the one at the opposite end will be propelled into the air? The shock from the impact at one end is easily transferred right through the other balls to the other end of the chain.
I am an active amateur pyrotechnician, and associate with people who use hydraulic presses for making rocket motors, comets, etc. Because the tooling (e.g.: case supports) used in this work are generally made from stainless steel or heavy-gauge aluminum, polycarbonate is often used as a shield material. Sometimes a layer of far cheaper acrylic is used to protect the surface of the polycarbonate from accidental scratches - but this layer is ONLY used on the press side, NEVER on the operator side, because despite the protection of the polycarb any significant 'incident' can cause the acrylic to turn into very sharp high velocity splinters.
Polycarbonate resists shattering and splinter formation, which is why it is a good choice for eye protection, but it is not 'compressible' to any significant degree. If something really hard and fast hits those plastic lens covers, even if they are good-quality polycarbonate, the shock will be transferred right through to the glass...and you will still end up with glass splinters in your eyes.
-Old Dog
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bgall
Expert Boarder
Posts: 125
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# # I am an active amateur pyrotechnician, and associate with people who use # hydraulic presses for making rocket motors, comets, etc. Because the tooling # (e.g.: case supports) used in this work are generally made from stainless steel # or heavy-gauge aluminum, polycarbonate is often used as a shield material. # Sometimes a layer of far cheaper acrylic is used to protect the surface of the # polycarbonate from accidental scratches - but this layer is ONLY used on the # press side, NEVER on the operator side, because despite the protection of the # polycarb any significant 'incident' can cause the acrylic to turn into very # sharp high velocity splinters. # # Polycarbonate resists shattering and splinter formation, which is why it is a # good choice for eye protection, but it is not 'compressible' to any significant # degree. If something really hard and fast hits those plastic lens covers, even # if they are good-quality polycarbonate, the shock will be transferred right # through to the glass...and you will still end up with glass splinters in your # eyes.
Unless, of course, your eyeglasses have polycarbonate lenses.
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CincySpaceGeek
Expert Boarder
Posts: 133
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Personally, I have also found that the most wearable solution is large clip-on sunglasses over my prescription glasses.
# #Sixth, Polycarbonate is also used to manufacture safety goggles that you can #wear over any type of eyeglasses or can be warn without eyeglasses under them. #
I have found that goggles are completely useless if they are worn for more than about 15 seconds. The glasses mist over inside them after that and I can't see any better than I could with no glasses at all. It took me years of wasting my money on expensive motorcycle goggles before I finally gave up and started wearing a face shield on a half shell, for adequate ventilation.
regards, Joe
It matters not how experienced you are, nor how dedicated to the task. If you're not having fun, you are doing it wrong.
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