Hello Norm,
yep bloody ridiculous the cost of postage, a couple of friends and I are messing around with 3D printing, unfortunately I am in Gol Gol, one in WA and one in Qld and there have been times when we would like to show our prints to each other but the postage kills that, so a lot of photos and explanations are used.
My friend in Qld does the design on computer so we can then use the file to print, I have sent him a Victa hub cap so he can do a file and we will see how that prints, he designed and we have been printing a mount for anderson plugs, we are on a forum of persons interested in caravans and motorhomes so we intend to supply these mount free of charge to any member, but at 30 gms the cheapest postage is $8 to $10 robbery.

Beech.