Niece is 11, think she’ll love this but when ive soldered the copper heart on, the top part hasnt done too well. It isnt gonna come apart but the silver disc has been domed and then the heart is slightly domed opposite to the disc. How best to do this without it distorting as i noticed this but stopped the heat straight away. Something to do with pressure i seem to remember but cant think where i saw it.



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