Hi, I have purchased a second hand Potclays 39 Silver Kiln. The kiln is around 20 years old but has only had light use.
This is the first kiln I have ever owned so I have no experience to fall back on. The instruction manual suggests you do two test firings, so I thought I would do that to start with. The first test firing, to 750 degrees, was completely successfully, with the kiln reaching temperature in the estimated time range. I put the bungs in the three peep holes on the side of the kiln around 4 hours into the firing time and left the peep hole in the lid open.
The second