I made this the other day and I'm not sure where my problem occurred. I did use my annealing bubbles instead of the kiln. I'm not sure if cooling was the problem or glass compatibility.
Problem pieces. by
Ruth Pletz, on Flickr
Then this happened:
Problem pieces. by
Ruth Pletz, on Flickr
I used Uroboros clear and this mysterious pink. I got this pink in an assortment from someone who didn't do lampworking anymore. No markings. (This is why I label all of my rods.)
Problem pieces. by
Ruth Pletz, on Flickr
Any ideas?