07-06-2020, 12:17 PM
Coming from a jewellery/silversmithing background I have done a large amount of silver soldering over the past 50 years.
A GOOD FIT IS ESSENTIAL AND ABSOLUTE CLEANLINESS IS VITAL
Oxygen will help with temperature but avoid overheating
Take advantage of heat reflected from firebricks.
I prefer to put small pieces of fluxed solder near the join to take advantage of capillary action and avoid flooding with excess solder.
A pickle bath, (I use 10% Surphuric acid, and a neutralising bath of Sodium Bicarb.) is really useful for cleaning after soldering
A GOOD FIT IS ESSENTIAL AND ABSOLUTE CLEANLINESS IS VITAL
I repeat this last to emphasise it. Further, this means that there must be absolutely no trace of any lead or tin solder in the area as it will react at the high temperature and permanently damage the metal you are trying to silver solder.
A GOOD FIT IS ESSENTIAL AND ABSOLUTE CLEANLINESS IS VITAL
Oxygen will help with temperature but avoid overheating
Take advantage of heat reflected from firebricks.
I prefer to put small pieces of fluxed solder near the join to take advantage of capillary action and avoid flooding with excess solder.
A pickle bath, (I use 10% Surphuric acid, and a neutralising bath of Sodium Bicarb.) is really useful for cleaning after soldering
A GOOD FIT IS ESSENTIAL AND ABSOLUTE CLEANLINESS IS VITAL
I repeat this last to emphasise it. Further, this means that there must be absolutely no trace of any lead or tin solder in the area as it will react at the high temperature and permanently damage the metal you are trying to silver solder.