AndrewD[HoMe Moderator]
12829
Polymethyl methacrylate is the essential Speedmaster accessory …
Jul 31, 2009,04:18 AM
Dear Hans,
I really appreciate you putting this summary together. I am a ‘facts man’ and it's great to have all this information available. The summary of the different optical polymers and co-polymers was very interesting as was the manufacturing processes.
I am pleased I chose a Speedmaster with a PMMA lens as I enjoy the shape, feel and authenticity of the ‘hesalite’. Sure, you have to look after them a little more than synthetic sapphire, but that’s not too difficult and after having a sapphire crystal shatter on me, I appreciate even more the properties of PMMA.
Regards,
Andrew
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Hesalite crystal facts
By: hans_jorgen_1968 : July 30th, 2009-03:36
There has been much said on hesalite crystal as used on the Speedmaster prof Hesalite or from other supplier could also be brandname Perspex. Both of them a PMMA sheet Tradename Material Manufacturer Hesalite PMMA sheet G-S Plastic Optics gsoptics.com Per...
Polymethyl methacrylate is the essential Speedmaster accessory …
By: AndrewD : July 31st, 2009-04:18
Dear Hans, I really appreciate you putting this summary together. I am a ‘facts man’ and it's great to have all this information available. The summary of the different optical polymers and co-polymers was very interesting as was the manufactu...