16 inch pyrex webbed backed mirror blank
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| Cellular Webbed back mirror blank | Ronchi-gram of blank on left after
processing
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Blank Specifications
* Thickness = 1.9 +/- 0.1 inch ( over all )
* Web height = 1.2 inch
* circular web pattern
* Weight = ~22 pounds
* Cost = $ 475
* Diameter = 16.5 inches ( ample space budgeted for beveled edge )
* Blanks have 10 surface bubble imperfections ( typical ) Negligible effect on performance (bubble size = .150 inch typ )
| 16" | circular | $ 475 | |
| 20" | hex | $ 850 | |
| 24" | hex | $ 1100 | |
| 32" | hex | $ 1700 | |
| 40" | hex | $ 2500 | |
| 48" | hex | $ 3600 | 48 inch design details |
20.5 inch hexagonal webbed back mirror blank
Blank Specifications
* Thickness = 3.8 +/- 0.1 inch ( over all )
* Web height = 2.2 inch
* Hexagonal web pattern
* Weight = ~55 pounds unprocessed
* Cost = $ 850
* Diameter = 20.5 inches ( ample space budgeted for beveled edge )
* Blanks have 10 surface bubble imperfections ( typical ) Negligible effect on performance (bubble size = .150 inch typ )
For annealing specs click on the link below
http://www.embeddedrf.com/Lookinglass_Webpage_Files/Glass_Annealing/AnnealingSpec.htm
Contact Info: mailto:embeddedrf@cox.net
Homepage: http://www.embeddedrf.com