• Make some glass slugs for testing polishing processes

I want to test a few different ways of polishing glass to a high finish. For these tests I need lots of identical glass slugs. Some bad luck and poor planning when making ginger beer resulted in a good quantity of broken glass bottles.

I crushed them up into chunks no larger than about 40mm in any dimension. I then washed and sieved the glass to remove dirt, dust, and very fine glass powder.

I dried the wet crushed glass in a stainless steel pot on a hotplate. I weighed out six equal quantities of glass into a muffin pan and melted it in my furnace.