devit solutions
You can try adding a drop or two of washing up liquid. This will help break the surfaace tension of the borax. You should know that bottle glass devitrifies very easily. Either try to incorporate the devit into the design, put the borax on after the fuse, sandblast are some of the suggestions I would make. (Other than don’t do it 
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Stephen Richard
blogs at: http://www.verrier-glass.blogspot.com/ and http://www.glasstips.blogspot.com/
