I did my ceramics master’s thesis on using glass as ceramic decoration. The trick is to double fire. The pot needs to be fired like normal. Then the fired pot needs to be fired to about 1350 F slow firing with slow cooling (annealing). I would be glad to share my thesis with anyone.
I've watched videos for crystal glazes where a catch basin was used and after firing, a torch was used on a wheel to heat the joint where the crystal glaze adhered to the basin. When you hear a ping, tap with a hammer. That might help with these experiments.
I really love that you do all of this experimenting! I’m so sorry you have done so much damage to your kiln though. The wood base is absolutely beautiful as well as an amazing idea!!
That chestnut foot was a stroke of genius. It complemented the vase perfectly! Edit: Also love the red and turquoise one; would look stunning with a few tulips put into it
Very interesting Idea. I will try it with coloured glass - say the bottom of a coloured bottle. It would also be interesting to take a pottery piece that has been glaze fired then re-fire it to the full fuse temperature which is around 1475F. There could be a point at which the glass flower but not off the pot.
Use a curved file to score where you want the glass to break at the bottom of the piece. You may have to alternate using hot and cold water poured on the line, and I don't know how the ceramic will react. A grinding or polishing tip in a Dremel tool will help to smooth any roughness.
How fast are you firing these and to what cone? If you do a firing one day and are able to do another the next day I’m just wondering because my kiln takes a long time to cool so I can’t do firings on back to back days. Thanks.
What if you crushed the glass into really fine powder in a ball mill or something, and made a liquid glaze out of it? You could do it with different colored glass, and just paint it on, or dip it?
I will be mixing a little frit (powdered glass) into a ceramic glaze fired to cone 10. I think what will happen is the glass particles will melt resulting in a streaky effect.
I’ve started fooling around using glass with ceramics. What you could try is mix frit with ceramic glaze. The glass particles will melt at around 1480F. I would use coarse grade frit rather than the fine or powdery frit.
Just been strolling through some of your videos ,it's very cool ,if you have time to answer ,do you make replicas of those old XXX moonshine jugs , or dose anyone use amfori for storing wine anymore
what about sanding the sacrificial glass to a matte finish so a glaze has an easier time sticking to it and totally painting it before using it like this
Why aren’t you using zyp in the bowls or cups to better facilitate the bits coming out clean? Also if you have your heart set on sling it your way, I’d recommend making a base that has long thin tripod legs. That will help make the pieces come apart more easily.
If you get a glass grinder (wet grinder) you'd be able to grind a hole into the bottom of the jars before fusing to let out any trapped air. You can find them in shops that sell stained glass supplies.
no amount of coats of primo primer / boron nitride / kiln shelf wash prevents sticking at glaze firing temperatures (2200+F). I've done this a few times trying to "sneak a slump" on my glaze firing. Its' frustrating but if you want to unstick your glass, its meant for 1550F ish max.
