Originally Posted by
rccardr
A crank and NDS arm will fit in a padded flat rate envelope, easy. I've done it a bunch of times. Not sure I could also fit a BB in there with some padding, but I'd be willing to give it a try. I don't use a cardboard liner, instead use Tyvek and shrink wrap.
Never had a problem.
And the padded flat rate envelopes are free. I order 100 and USPS drops them off at your door. You can put a crankset in one padded envelope, fold over the excess, and then put it in a second padded envelope so you don't even have to purchase packing material. Even if you dont actually use the envelopes its still free bubble wrap for other stuff. You could wrap a frame in them if you wanted.