Re: ATM 3 inch reflector

["Amelia Thomas" <amelia_thomas@hotmail.com>]

I've watched the search for small secondarys come and go a few times and 
have not seen anyone suggest www.handsonoptics.com . Look in their used, 
seconds section and there you will find .5", .8", .9" and 1." secondarys 
listed as new for $20. or less. I have no connection to Gary Hand other then 
being a repeat and satisfied customer who has taken advantage of a number of 
good deals he has offered. Amelia


>>In wandering through the archives, I came across a thread on making a
>reflector from one of the Surplus Shed's 3" spherical mirrors, which are
>pretty cheap.  I'd like to let my sons make one of these.  I had a 
>reflector
>of similar capacity when I was a kid, and it was a lot of fun.  The 
>sticking
>point is the secondary.  It would pain my penny-pinching soul to pay 
>several
>times the cost of the primary for a diagonal this small.  So here's my
>(possible stupid) question:  is there any way to cut one of those surplus
>first surface flat mirrors without destroying the coating?  If it helps, I
>have a small diamond spindle shaper, originally used for touching up 
>stained
>glass shapes.
>
>Thanks much,
>
>Ray
>
>


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