I have an old Vulcan 3-550 that I’d like to get going for use in annealing and enameling. I might eventually use it for burnout as well. Right now it heats up when turned on, but what concerns me is the state of the insulation on the muffle and the door.
The front of the muffle insulation is gouged out in several places, while the door insulation has slowly been sheared flat by rubbing against the cabinet when the door lifts. The combined effect results in spaces where the door and muffle aren’t sealed when closed. Replacing the muffle insulation is quite costly, so my thought was to simply replace the door insulation, which would likely improve the kiln’s seal considerably.
I’m wondering if: a) it’s worth the trouble and expense to do the door repair alone, or b) it’s pointless to repair the door if you aren’t also replacing the muffle, or c) perhaps it’s unnecessary to replace any of it and it can be used as-is!
Thanks for any advice,