Good question here SequoiaBET.
âSlagsâ are a combined process where the two colors of glass are combined from the start from the furnace or in the old pots that hand-gathered marbles came from.
Most âMachine Madeâ âSwirlsâ are a two (or many more) stage process where one color meets another just before it is cut-off onto the rollers.
To really get an idea of this, you would have to study the machines and how they worked.
I have and it has helped me with my ID of marbles greatlyâfinding out how they were made by what machine.
This is intense stuff and it will blow you away once you start to research it. I encourage you to do so along with the rest of the marble collecting community that we all belong to.
When I say that âI just love this stuffâ I mean it.
I have been down the âRabbitâs Holeâ for weeks on end researching marbles and the machinery that made them. (I spent a lot less on marbles while doing this and gained a whole bunch of knowledge that I am here to give away)
When I get locked on to a subject, I was/still am, like a virtual or book weirdo, just sucking in the info that I could/still find.
I just love this stuff,
Really I do!!!
MarbleâOn!!