[ATM] 40" mirror

[Jay Kirkland <jaykirk2@compusmart.ab.ca>]

    There was a 4 page article on fusing your own lightweight honeycomb 
mirror in Telescope Making mag #14, Winter 81/82. One of the 2 authors 
is JRP Angel, who I believe is still at the U of Arizona, melting and 
spinning HUGE mirrors. Back in 81 they had justcompleted a 1.2 meter 
honeycomb mirror and were working on a 1.8 meter.
    In a follow-up letter in TM 15, another person recommends the 
following references: by R Fournier:  "Electric Kiln Construction for 
Potters",  F A Colson: "Kiln Building with Space Age Materials" and two 
by F. Schuler:  "Glassforming" and "Flameworking", the latter said to be 
especially important in its discussion of proper annealing for both 
plate and pyrex from 1/2 to 4" thick.
    Tho 20 years old now, TM mag is still amazing. Just stumbled across 
Dick Suiter's original work on star testing and mirror testing. Many, 
many of these articles need preservation in a Will-Bell hardcover.
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