Jump to content

MFC Slag Double Ingot?


marblenewbie

Recommended Posts

1 hour ago, marblenewbie said:

It goes about halfway around.  Does it have to go all the way to be a double ingot?  I'm learning.


It has to go all the way around, because a double ingot is the glass of two separate marbles which have been squooshed together.  It can be a very smooth joining.  So smooth that you can't feel the line where the two pieces were joined.  But you should still be able to _see_ the line and literally see the two separate marbles that came together.

Link to comment
Share on other sites

I have never seen or heard of any MFC slag double ingot. All the MFC slags were hand gathered.  Why would a person gather enough glass on a rod for double the size of the marble they planned to produce. Plus the gathered glass was tipped and flowed from rod, then cut from the rod in the amount of glass needed for the size marble needed.  MFC hand gathered slags were rolled out one at a time.  Double ingots happen from 100% machine made marbles produced at 50 to 300 per minute. Double ingot marbles are errors. They are usually to large for the roll grove and stick together with another marble in the roll grove next to it. They are usually out of round, a crease or roll mark around near the middle of the marble. Because the hot glass glob is to large for the roll grove size.  

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...