Isn't it just a royal pain trying to find the right-sized box required to ship a handsaw out for servicing, or to complete an eBay sale? You should see the array of boxes I get, just like this random sampling, lol.

This DIY article will show you how you can procure free, modular boxes sent to your doorstep that are practically custom-made for shipping saws anywhere you need them to go--and guess what--you’re helping out the United States Post Office in the process. Here’s how you do it:

Go to this link, and order some boxes, first. The PO will be glad to send a box of 25 or more to your doorstep for free. That’s right. FREE.

These boxes are perfectly sized in length and depth for packing saws. All you have to do to make them longer is splice them together, like these pictures show.

After taping the seams, wrap and pack your saw as I explain in my 'packing your saw for shipment' article.

The cool thing about this method is that you can make your shipping container as long or short as your requirements dictate. One box alone will handle most dovetail saws; two boxes spliced together will handle most back saws, and three spliced together will take care of handsaws. I can get up to three handsaws packed in this manner. Here’s the really cool part--after packing your saw for shipment, coordinate for your USPS carrier to come pick up your box from your doorstep the following day for free. That’s right--FREE.

Happy packing, and remember: You don't have to pay an arm and a leg to have UPS do this for you. They'll put your saw in an unnecessarily huge box cram-packed full of peanuts and flick that big booger onto my doorstep, because size matters when you want to charge more for an unnecessary service. 
Support your country by supporting the United States Postal Service. They're great!