Can this be fixed?

[Vonon]

I made a large 9mm thick landscape piece following the method I learned in Roger Thomas's class. One firing. I decided to "fix" the imperfect edges by re-firing with my new now-long-enough dams. For a reason I cannot fathom I used my notes from Miriam Di Fiore's class to do this re-fire. Got a beauty of a thermal shock crack. My question is: can I leave this in place in the kiln, fill in the void with appropriate frit and re-fire veeeery slowly?

[Stephen Richard]

Probably

[Havi]

I think so..............

Just sprinkle more frit of the same color at the broken area.

Only watch your schedule, you must have done something wrong with the firing process - which caused this break.


Good luck,


Havi

[twin vision glass]

What is it fired on. Kiln Wash. Will it be seen from the back side. Really go slow with so much happening. Also how about a new tree infront of the crack . If you do view from both sides , raise the piece up on a clear piece of glass (new kiln wash) with design features underneath and a tree to cover the crack down on the kiln shelf. I do this all the time and fire 8 layers thick on top of this. That way you get a lovely design on the back side toooo. BUT go slow . 50 deg per hour with a hold at 1230 for one hour to settle glass down around your raised pieces. I will try to find a pic so you can understand what the heck I am taking about. Prime the dams again toooo! Off I go to find a pic.
Les

[twin vision glass]

I found these two that show how you design on the kiln shelf to enhance the back and then build on a clear layer so you can carry the piece into the kiln and place very carefully on design that will hide joints of colour bars and things. Hope this might help out. Les

[Vonon]

Thank you so much.

Les, It will not be seen from the back (which is opaque) so I will first try working from the front after renewing kiln shelf and dam preparation. Good idea to add another tree or similar element over crack. I appreciate the schedule advice. I was thinking about 50ish per hour and will hold as you suggested. I presume an extra conservative anneal is in order too. Also your pictures are helpful if I should decide to go that way.

Havi - yes, my original mistake was speed to avoid devit. As you say "speed is from the Devil".