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Old April 15th, 2006, 11:42 AM   #1
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SG35 GG replacement

Has anyone had to replace their SG35's ground glass?

What did you use?
And, is the groundglass that comes with the M2 red rock DIY instructions any good?

Thanks.
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Old April 15th, 2006, 12:23 PM   #2
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The GG that came with my Redrock Micro35 DIY kit was their "M1" GG, apparently the first one they made. It worked OK, but it had about 2 F/stops light loss. I must also say the disc was slightly warped and that its centre hole was slightly off centre.
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Old April 15th, 2006, 01:09 PM   #3
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I think he is referring to Wayne SG35. It is made from custom made from Glass, from what I recall. You would have to ask him.
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Old April 15th, 2006, 01:15 PM   #4
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Well, Josh’s last question was rather clear and specific...

I should add that the Redrock GG is made of plastic (I suspect optical acrylic, but I’m not 100% sure).

BTW, Josh, you can also have some discs made to your specs. I did have some optical acrylic discs done from a company called techplast dot com. It was not that expensive.
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Old April 15th, 2006, 01:22 PM   #5
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SG35 uses plastic GG since the breakage of real glass is a big problem. I think you should contact Wayne for replacement GG, thanks.

Quyen
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Old April 15th, 2006, 04:38 PM   #6
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Josh,
Can I ask why you would want to change the SG's ground glass?
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Old April 15th, 2006, 06:59 PM   #7
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I wouldn't want to if it wasn't broken.
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Old April 16th, 2006, 04:38 AM   #8
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Josh,
OK, so it was just breakage issues you were worrying about? As Quyen says, its no longer real glass so no breakage problems.
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Old April 16th, 2006, 05:32 AM   #9
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Josh,
Do you own an SG35, not bought from myself? Or was it just a question out of curiosity?
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Old April 16th, 2006, 08:37 AM   #10
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Wayne,

I didn't know you switched from Glass to something else. I thought that is why your footage looked so good because you were using glass...
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Old April 16th, 2006, 10:24 AM   #11
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David,
Made the switch from glass some time ago. It was not so much the glass that made the nice images, but rather because the glass was 'treated' The new material has the same properties as the 'treated' glass so same great colours and contrast with low light loss, with a better light loss to diffusion ratio. The spinning disk is only 0.5mm thick
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Old April 16th, 2006, 11:43 AM   #12
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I own one, not bought from you, and the GG was broken in shipping.
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Old April 16th, 2006, 11:56 AM   #13
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OK Josh,
this must be a very old model. I am willing to upgrade your unit for you to the new GG and mechanism. Just let me know.
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Old April 18th, 2006, 06:40 PM   #14
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Okay, I e-mailed you with questions about upgrading.
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Old April 19th, 2006, 03:44 AM   #15
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Josh,
I have not received your email, emailing via this forum does not work sometimes. If you email me directly to waynekinney@hotmail.com
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