Did it ever became clear why they failed with this construction?
Lack of craftsmanship. If you make 1 a week, there is no problem. If you make series of e.g. 40 a time, you start getting problems.
Temperature of brazing Accuracy of mitre Hi stress (on material)
@Dutch_Cheese started
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Lack of craftsmanship.
If you make 1 a week, there is no problem.
If you make series of e.g. 40 a time, you start getting problems.
Temperature of brazing
Accuracy of mitre
Hi stress (on material)