I have started working on a series of bird skulls. I make the head from boro tubing, and then use boro rod to make a beak. On several of the pieces that came from the kiln this morning and yesterday, I found cracks.
The cracks are all at the same place: where the beak is attached, close to the hole for the eye. Did not notice it while working.
Any thoughts on what I am doing wrong? I am wondering if the hollow head cools down too much, and when I then apply the hot glass for the beak, it cracks. There should not be any COE compatilibity issues between rod and tube, right?
I am working on a small torch (cricket GTT) and that makes it quite hard to keep a whole piece heated enough. I am pretty new to boro, so there's lots to improve on.
Anyway, any thoughts would be appreciated.
I'll try to salvage them by heating them up in the kiln and then trying to fix the crack.
