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Sil Fos 15. welding silver, $600, Calgary, AB

Maybe a good buy if you are an HVAC guy, but for hobby use, it's a lot to lay out for something you will use very little of.

Unless you were planning on filling your truck with copper boilers for small steam engines, anyways...
 
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Hm.
15% silver is not a very common choice for a boiler. 45% to 65% is more the norm.
In addition, solders bearing phosphorus are prone to degrading in the presence of sulphur generated by the burning of coal or petroleum products. Some model engineering club boiler inspectors will decline to certify a boiler made with Sil Fos or other similar solder.
Best, I think, to leave this for the HVAC guys.
 
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