Total weight has come in at 10kg, which is a bit more that Gary's version largely because I used 18mm ply for the main parts of the box, as it is not for airline use this was OK.
I may have a crack at a box with 12mm like Gary's, but still to decide. Also the spider and focuser are heavier than the ones he did.
Had a use with a 25mm plossl I had lying around last night. Very nice views and an ep like that gives a wide field with relatively little discernible coma.
Malcolm
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