Have you ever wanted to do a pot melt but were not completely sure how to do it? This is a really informative video showing how to set up a pot melt. If you don't know what a pot melt is, you can watch to video to see what it's all about!
These are notes for figuring the amount of glass needed to fill up a certain size dam area as given in the video.
1 cubic inch of glass = 1.5 oz
1. Weigh the oz of your glass
2. Divide the weight by 1.5
3. This is the cubic inches of your pour
(In the video) he had 41.6 oz of glass.
So he divided 41.6 by 1.5 and got 27.73 cubic inches of glass.
The dimensions of the dams used in the video were 6" long by 4" wide and 1" thick. He multiplied, 6 x 4 to get 24 and then multiplied that by 1 (the 1" thick size of his dams) and came up with 24 cubic inches of available space to fill. That is how you determine the volume of the dam that you are using.
So, in other words, he needs to use a dam that is taller than 1", because the mold created with his dams can only hold 24 cubic inches and he has 27.73 cubic inches of glass to use. To be safe, he will have to use 2" tall dams so that all of his glass will be able to fit into the mold without overflowing.