Suggestions on what I'm doing wrong?
Posted: Fri Jul 12, 2013 10:17 pm
Open to all tips - please!!!
I'm fusing powders (or trying to, anyway) and not having much success. Here's the image pre-firing.
[img] [/img]
It's all 96, fused in an 8 inch Evenheat kiln. The second image shows both (failed) fired attempts. When I fired Betty (1st attempt) on the right, I failed to vent the kiln, and took it up to 1345 degrees. When I fired Betty (2nd attempt) on the left, I used the following schedule in a vented kiln:
315 to 1320 for 11 min; AFAP to 950 for 40 min; 200 to 750 for 15 min; 300 to 400, kiln off.
[img] [/img]
I'm fusing all (layers of powders) at once (in one firing). Initially, my thought was too hot, which is why I backed it down to 1320, but my second attempt still appears 'charred' and it has more of a mat, bumpy, low-fired finish.
I have had success with this technique before, although can't figure out what I did differently then verses now. Here is an example on slumped bottles using coe 82 powders (one somewhat successful, one failure). I realize the breaking of the 2nd (cobalt) bottle was a ramp issue ... but what's causing the powders to 'char' and 'burn'? [BTW the bottles have only one layer of powders, unlike the Betty Boops.]
[img] [/img]
Please help ... Thanks, Kris
I'm fusing powders (or trying to, anyway) and not having much success. Here's the image pre-firing.
[img] [/img]
It's all 96, fused in an 8 inch Evenheat kiln. The second image shows both (failed) fired attempts. When I fired Betty (1st attempt) on the right, I failed to vent the kiln, and took it up to 1345 degrees. When I fired Betty (2nd attempt) on the left, I used the following schedule in a vented kiln:
315 to 1320 for 11 min; AFAP to 950 for 40 min; 200 to 750 for 15 min; 300 to 400, kiln off.
[img] [/img]
I'm fusing all (layers of powders) at once (in one firing). Initially, my thought was too hot, which is why I backed it down to 1320, but my second attempt still appears 'charred' and it has more of a mat, bumpy, low-fired finish.
I have had success with this technique before, although can't figure out what I did differently then verses now. Here is an example on slumped bottles using coe 82 powders (one somewhat successful, one failure). I realize the breaking of the 2nd (cobalt) bottle was a ramp issue ... but what's causing the powders to 'char' and 'burn'? [BTW the bottles have only one layer of powders, unlike the Betty Boops.]
[img] [/img]
Please help ... Thanks, Kris