Pye B16T.

[ppppenguin]

That all sounds really excellent.  I guess that Frank used the ordinary expanding foam that you buy in aerosol cans

Many years ago in the 1980s when I was working for a company, they got a packing system that had a foam generator. I didn't see much of it but from what I dimly remember the kit to be packed was put in a plastic bag, some foam was squirted into the bottom of the box, kit rested on foam and the box filled up with foam. I imagine that if it got out of hand it could be entertaining

PS: Just had a look online and there are all sorts of expanding foam packaging systems.

I worked at a place where they had a system called something like "Instapack".
There was two big drums of resin and a wand connected to a box on the wall.
Everybody used it. There was a roll of plastic sheeting provided.
You just put a sheet in the box with enough excess to fold it over after adding the stuff to make the bottom block. You then placed the item on the folded over plastic and added another sheet followed by the stuff to make the top block.
The skill was in getting the correct amount in so that it did not overfill.
The setting time was much faster than the DIY store stuff.
Guess what the wall box had in it
One day when nobody was in the packing bay a dull clunk was heard over by the power board in the workshop. It was the packing machine breaker.
The packing bay was all full up with RIFA smoke. Pooh...
The engineer from the company that supplied the resin and machine was there in an hour or so.

Very similar to what I remember, though without any magic smoke. I don't think anyone tried the fairly obvious jape of packaging a fellow member of staff  But only up to the neck as otherwise it's dangerous