I believe you can braze the copper joints under the slab.
is a metal
-joining process whereby a filler metal
is heated above and distributed between two or more close-fitting parts by capillary action
. The filler metal is brought slightly above its melting (liquidus
) temperature while protected by a suitable atmosphere, usually a flux
. It then flows over the base metal (known as wetting) and is then cooled to join the workpieces together.
It is similar to soldering
, except the temperatures used to melt the filler metal are above 450 °C (842 °F).