Quote:
Originally Posted by Rac
I've made an 18 point cell for mine but I've found its the edge supports that needs to be done really right. My first effort caused a little pinching and produce a slightly triangle star. With a mirror that tall i would say the edge support is going to be very important.
If you're going to mask the edge of yours then i would recommend making a ring rather than vivid as in that image. There should only be a need to mask a 1mm off the edge unless the edge is rolled.
Even my Royce mirror works better with the last .5-1mm masked off with a ring i made in my lathe.
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Good info thanks, what did you make your ring from?
I'm sure there will be very little edge roll from Normand but 1mm is what I'll start with, any more than that and it will be costing me lots of wasted $.
The edge support will be a work in progress for some while unless I get lucky, I will start with 2 wires and 12 supports both anchored E & W.