I can't really answer your first question........I just spray mine with Starsan and add it after the boil.
As for getting it out, I use one of those telescopic magnetic pick-up tools - also sprayed with Starsan.
You could also try giving the grain a light squirt with a spray bottle of water before milling.
It works for me, but does make cleaning the knurled rollers a bit more work afterwards.
I'd say the alligator clips are not connected directly to the battery terminals, but to some sort of metallic strip which then slots into the terminals. Something like paper clips might do the job.
Have a look at the AEG charger contacts and see if you can find something similar.
I think the top part of the posts on those kegs has a smaller diameter than those disconnects are used for.
I ran into a similar problem when I bought some more pinlock kegs online. When they arrived, I noticed the posts were wider than my original ones.
I ended up getting some of those plastic...
It might be possible to get away with it in SA. There's no barcode required here and we're allowed (even encouraged) to crush the cans before taking them to the recycle depots.
So if you are able to crush them enough to make them indistinguishable from a commercially canned beer/soft drink etc...
So did anyone actually get to buy one of the canning machines?
Yesterday the site said they would be available from 10/2/19 (today).......today they are "out of stock".
I've had 5 of the smaller diameter post pinlock kegs for 25 years or so. I bought 4 more online a few years back and when they arrived, the first thing I noticed was the larger post diameter, so my disconnects weren't going to fit them.
I bought 2 sets of the larger diameter plastic ones and...