I do repairs on amplifiers. I reuse the packing to return units back to customers. This has become such a pain that I'm thinking of investing in a foam machine. Anybody know who makes them and what they cost.

Have you read this thread in Vintage Solid State?
"Packing vintage gear/ SLICK"

Here's the link to pre-packaged foam bags.

http://www.sealedair.com/products/protective/instapak/quick/instapakquick_examples.html#

Looks like what my last monitor was packed with.

Good luck, there maybe an investment in equipment, but that would be true of two part foam machines, I'd think.

Mike