Poinsettia Mold With Bubbles
Posted: Mon Nov 23, 2015 8:22 pm
Help! I got this Poinsettia Texture Frit Bowl mold and am getting a bubbling problem.
I put down the frit and capped with 2-3mm 11" circles of Texta glass. No frit in the center. I had a huge bubble in the center only. So I put scrap Texta into the middle and refired. Now I have 3 bubbles.
Mold was primed with multiple coats of MR-97 and cured at 200° for 20 mins. First firing had some of the mold detail break off into the glass. Mold got 3 more coats an another curing before second firing.
Firing schedule:
300/1150/00:15
50/1250/00:20
850/1450/00:15
AFAP/950/01:00
80/750/1:00
400/120/00:00
My kill is a Paragon CS-14D. I put the mold, by itself, on top of four 1/2-inch posts on the bottom of the kiln. I only have 6-inches of space in the kiln.
I have no idea what I'm doing wrong. I do have enough frit and Tekta to try again, as soon as I get some good advice.
Questions: Should I pre-fuse the two 3mm Tekta caps?
Should I NOT pre-fuse but instead cut it or break it up?
Should I drill holes in something somewhere?
Should I fill the center area with Tekta frit?
I put down the frit and capped with 2-3mm 11" circles of Texta glass. No frit in the center. I had a huge bubble in the center only. So I put scrap Texta into the middle and refired. Now I have 3 bubbles.
Mold was primed with multiple coats of MR-97 and cured at 200° for 20 mins. First firing had some of the mold detail break off into the glass. Mold got 3 more coats an another curing before second firing.
Firing schedule:
300/1150/00:15
50/1250/00:20
850/1450/00:15
AFAP/950/01:00
80/750/1:00
400/120/00:00
My kill is a Paragon CS-14D. I put the mold, by itself, on top of four 1/2-inch posts on the bottom of the kiln. I only have 6-inches of space in the kiln.
I have no idea what I'm doing wrong. I do have enough frit and Tekta to try again, as soon as I get some good advice.
Questions: Should I pre-fuse the two 3mm Tekta caps?
Should I NOT pre-fuse but instead cut it or break it up?
Should I drill holes in something somewhere?
Should I fill the center area with Tekta frit?