06-06-2020, 09:24 PM
have a look here.
https://www.cupalloys.co.uk/best-practic...g-tutorial
Note the capillary action (where the silver solder flows into the joint) is dependant upon the gap width of a few thousandths of an inch. If the gap is too wide, you are heading for trouble ! Torch size and chooie of gas is dependant upon the Mass of the metal you want to heat up. Thin brass to copper tube etc and you only need a simple torch. Once you get into things like rad filler tube into a brass sheet, you need a bigger torch fed from a gas bottle (propane is hotter than Calor Butane). If the joint has previously been lead soldered, you will need to remove ALL of the lead solder as the two are not good bed fellows.
https://www.cupalloys.co.uk/best-practic...g-tutorial
Note the capillary action (where the silver solder flows into the joint) is dependant upon the gap width of a few thousandths of an inch. If the gap is too wide, you are heading for trouble ! Torch size and chooie of gas is dependant upon the Mass of the metal you want to heat up. Thin brass to copper tube etc and you only need a simple torch. Once you get into things like rad filler tube into a brass sheet, you need a bigger torch fed from a gas bottle (propane is hotter than Calor Butane). If the joint has previously been lead soldered, you will need to remove ALL of the lead solder as the two are not good bed fellows.