Quote:
Originally Posted by GrahamL
I've used Marks suggestion of velrcro at the 60% zone for many years without any issues on my 12" I have three edge supports that barely touch the mirrors edge, Theres noticeable end float of the mirror sitting on the Velcro if you give it a slight lift (a good thing?) but its really not going anywhere,I'd happily transport my mirror box inverted if I had to and don't bother trying to remove it to clean as its pretty stubborn to separate.
There used to be a heavier duty "Velcro brand" available ,bunnings,,it had a load rating from memory,but I havn't seen it there recently,officeworks seem to list it.
cheers
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I have hung mine upside down too, no problem. Loading for the industrial velcro is 1 lb per square inch ( Made in the USA of course ).
The Velcro allows a smidgen of movement due to the flexible nature of the locking hooks and material so no strain anywhere.
I wash mine in the scope, pull away the lightshield ( cardboard tube ) and just slosh around with a squeezy bottle with the mirror almost on edge vertically. I have pulled it clear once, took a bit of doing and required a thin blade to peel each of the three velcro areas one by one. Helped that the velcro had a bit of flex. Went back together no problem. I have a three side retainers with silicon and a 2mm gap just in case but not really necessary.
Heres the text output from PLOP btw
;18 point cell with fixed angles
diameter 508
thickness 51
focal-length 2540
n-mesh-rings 20
n-mesh-depth 5
rel-support-radii 0.385173 0.79345
num-support 6 12
support-angle 0 15
basis-ring-size 6
basis-ring-min 0
obstruction-diam 89
optimize rel-support-radii 0 0.01
optimize rel-support-radii 1 0.01
part triangle 6 point 0 0 point 1 0 point 1 11
part bar 3 part 0 0 part 0 1