Quote:
Originally Posted by ausastronomer
Ian,
If ever I buy a mirror off you please leave the greaseproof paper on your kids lunch and put some "acid free tissue paper" over the mirror you send me.
You can buy acid free tissue paper at any craft store. James Mulherin from OMI, who ships more mirrors than anyone in the USA, ships all Obsession mirrors this way.
Cheers,
John B
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Well, not exactly grease proof , was not sure what to kind of paper to call it and kind of paper came to mind
, someone else here nailed the stuff I was referring to (see Satchmo's post).
Fortunately for me, when my mirror arrived , I kept the shipping materials and resealed the the double box (less the mirror) for future use .... my mirror is currently stored in its original box, and my secondary is repacked , pending my getting around to reassembling my OTA. (a few minor mods on the new mirror cell - side clamps need mods (to make them function like a NOVAK RQ Mirror Cell's side clamps - only thing I can fault Orion Opticals Cells on is the side clamps .... they are strange screw-on monolithic machined from a bit of aluminium block beasties and don't fit quite right on my mirror .... not a big issue , just a fiddle fixing), a bit of flocking (maybe some light baffleling), and then reassembly , collimation and it'll be good to go under the stars on it's new home mount.
Re packing material - I would think Balsa wood blocks or wedges (very soft stuff with lots of give, maybe it's a generational thing, you fellas today probably never do stuff in Balsa wood) would be suitable, or good quality styrofoam would be OK to protect the edge from damage.
But then I guess it comes down to the mass of the mirror and the hardness of the mirror surface or the coating (or SiO2 or TiO2 or what have you's protective overcoat's hardness , so long as the packing is softer than these you should be fine unless some hard grit gets between the surfaces.
I was also under the impression the more reputable coaters we only too happy to advise on best packing for mirror shipping , all you need to do is ask them if it's not already in their FAQ or explained in their website .