This piece was done with lots of trials and tribulations! See the earlier posts for failed pieces, but look pretty as a suncatcher in the trees!
This was BE powder. Center is white (not dense white), surrounded by canary yellow. The blue is powder blue.
I used masking tape around the edge so I can build up the powder to about 1/4" thick. Then I used water & gum arabic to "blend" the edges. While very wet, I dragged a wooden skewer outward to blend the colors. Then I blotted it and let it dry completely before full fusing.
First Fusing schedule:
Starting temp 70 deg
Lo for 50 min. Temp at 580 deg. Turn to Level 1
At 1 hr 36 min, temp at 746 deg. Increase to Level 2
At 2 hr 30 min, temp at 1000 deg. Hold at 1000 deg for 15 min
At 2 hr 45 min, increase to level 4
At 3 hr 45 min temp at 1350 deg, increase to Level 5
At 4 hours, 0 min, temp at 1450 deg. Hold at 1450 for 10 minutes
At 4 hr 10 min, turn down to Lo
At 6 hr 16 min, temp down to 1000 deg. Turned Kiln off overnite
RESULT: Originally this looked like an egg, or the center of a flower.
Second fusing: The face is drawn on with glassline, watered down to flow through a kemper tool.
Firing Schedule: Starting temp 72 deg.
Turn to Lo. Malfunction since at 60 min, temp still at 100 deg
Increase to Level 2
Increase levels quickly
At 2 hrs 47 min, temp at 1000 deg. Hold 20 minites
At 4 hr 20 min-temp at 1450 - hold 20 minutes
Turn down to Lo until 1000 deg
Turn off to cool overnight
This was too plain as a medallion, so I fired to BE 6mm purple. Concern about bubbles breaking through the surface since the bottom of the medallion was uneven with hills and valleys.
Added chads around the edge of medallion by using clear fine frit. Needed to ramp up slowly to 1000 degrees. And do a bubble squeeze between 1000-1200 degrees by holding at 1200 for 30 minutes.
Goal was to tack fuse with a rounded edge to the medallion, and to do a bubble squeeze slow ramp.
Firing Schedule:
6/6/09 Turn on to Lo
At 2 hrs 20 min, temp at 800 deg
Increase to Level 2
At 3 hr 15 min, temp at 1000 deg.
Hold at 1000 deg for 20 min (still at Level 2)
At 5 hr 53 min, temp at 1150.
At 6 hrs 21 min, temp at 1200 at Level 3
At 8 hr 0 min, temp at 1325 deg
At 8 hr 18 min, temp at 1300 deg
Turn down to Lo until temp at 1095 deg. (9 hr 10 min)
Kiln then turned off.
RESULT: Good- Did not have bubble breaking through surface. Edge of medallion was not as rounded as I wanted. I should have gone up to 1350 and held there for a longer time.