Thank-You Julie for your advise , I'm going to try it again  Deb

I need help ,I purchased the small ceramic vase slumper mold ,I've kilned washed it . First attempt was to make a small candle holder ,using 2 peices of glass offset ,fired to book beginners guide to kiln fired glass pg45.The result was glass stuck and cracked.Next time I used 2 peices of kiln paper ,slowed down the fire schedule same result.Third time I used 3 peices of kiln paper changed the fire schedule completely very slow with the same result. Can anyone help?  I've done some reading on the net and it was suggested that the mold will cool at a slower rate- therefore glass cracking.   Thanks Deb