I have always shipped my doubles in a plastic luggage case I bought from Thad Scott years ago, then boxed up really well. This only when it is coming back to me after repair etc. Ohterwise, I buy a cheap Doskocil case and modify it to work as necessary, but I NEVER ship in cardboard alone.
I use the PO approved gummed and reinforced tape that requires wetting as the final taping, but use the poly tape to assemble the box. It is a real p-i-a to use, but when it's finished, it is VERY secure. It may take a good hour to do if I have to make a box to fit the case. Cheap insurance.
JR
Last edited by John Roberts; 10/14/16 03:40 PM.