Damn your complicated!.............................JROK, necro-posting here. So shoot me. But these things have fascinated me since I got one in a box of "stuff" from eBay.
I have been experimenting myself. And I think I have a better answer. But I might be completely wrong.
I figured they didn't have too many shave sticks like Arko, so I was trying to use plain old fashion box lye soap. You know, lard, water, and lye. There is an outfit around where I live that makes a bar that's sold in the local health food stores.
Well, the lard based soap isn't worth a hoot, but I can imagine someone making a tallow based soap just as easily, and then it becomes a commercial product. After all, tallow was just as available as lard. Look at the candle business. So Arko is probably a "reasonable" substitute for the soap of the day.
But, on to the scuttle operation.
I assumed that I didn't have running water, and I needed to boil water in a kettle. Also, get over the example in the video on YouTube where the guy is submerging the whole thing in a sink of hot water. If I had a sink with piped in hot water I wouldn't be using this thing in the first place. And if I don't have a sink with running hot water, how the devil can I submerge it in the non-existent sink.
And how am I going to cram this brush in to the mouth of this thing after I have it full of boiling water, anyway. Or if I stick the brush in first, how am I going to pour water into the thing?
Wait! How am I going to pour water into the thing with a brush sticking in the mouth of it? And how about a little warm water to soften up that soap up top, too.
DON'T plug the holes with the soap. We need the holes to fill the reservoir! We pour hot water *OVER* the soap so it runs through the holes into the reservoir with the brush already sticking in the mouth of the pot.
The soap is warmed and a little wet. The brush is in place conveniently instead of in the way. And I have a little pot of hot water I can carry to my wash basin or Don Quixote style shaving bowl.
I suspect the knots on old brushes were not as generous as the knots of today, so it wouldn't be as much "cramming" in as the knot I've been working with. One thing I have noticed about the old Ever Ready knots is that they don't bloom the way a modern knot does. So it would be a better fit.
Anyone got a different way? What am I missing?