Sunday, June 4, 2017

Glass Doughnut

It is not as appealing as it sounds. Hot glass is corrosive. It attacks everything and over time and destroy most physical objects. The furnace has a crucible that holds the molten glass over time it breaks down and glass seeps out. The free ranging glass in the furnace then attacks the refractory. Refractory is the high temperature cement that insulates the furnace. Then the refractory is compromised it no longer insulates properly. With the refractory there becomes a weak spot called the glass doughnut.
We are looking at this for the furnace. To fix it requires either a complete tear down and rebuild or a new furnace.
I was hoping to make a decision this next week and in August take action with the rebuild or a new furnace install.
On Friday, the crucible developed a huge crack down the side. This changes the whole time frame and approach to the summer. We have some options, so we shall see what happens.

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