ok well, I had a go at the weekend and did two direct impression fingerprints. All went well with the carving, firing etc until I went to solder on a jump ring and the back of the print exploded! Is this normal??!?!?! The initial finring was fine- no problem at all. Should I not have pickled it afterwards? Did it soak some up maybe? Or do you think it was an air bubble that wasnt released until I heated the piece up to soldering temperature? I want to have another go but do NOT want to make the same mistake again- it really hurt!
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