Hi pisquee, As you know, I usually sell my mugs direct to customers.
I also make my mugs in sets of 4, and for those I shrink wrap them as a set because I don't have to ship them. The idea is that if there isn't $40 profit in every sale I don't want to bother with it.
But I occasionally do mugs to order for friends and club members, typically with a photo of their pet or their aeroplane or yacht, and these I was putting in their pox with some bean bag beans, then putting the box in a satchel. And they almost invariably get broken.
That got me wondering. I had been vermin proofing a wall and ceiling space in the workshop one day and had a mug to send. And I had a partly used can of foam. The rest went as I described. I didn't bother timing it, but after the third practice mug (old ebay failures that I could throw onto concrete) I worked out a few things.
If I feel like wasting the cost of a can of foam I'll time it one day, otherwise I'll wait until I have to repair something again.
However instead of using the snigle pack can of foam, which goes hard in the can if you don;t use it all, I have been wondering about using 2 pack marine or similar foam. It is a liquid and half a shot glass of the stuff should do a mug box with stuff all waste.
They have something similar in the UK.
http://www.cfsnet.co.uk/acatalog/CFS_Ca ... d_415.html
I'll think about getting a can for the heck of it, and time it and take pictures, but this will give you a more cost effective option.