Silver soldering the BPM-5 rocket engine

For the BPM-5 rocket engine Copenhagen Suborbitals has had to develop a practical approach to silver-soldering and tempering the combustion chamber. Finding a workable approach proved a worthy challenge, requiring multiple approaches to be tested and found wanting, until finally a practical approach was found. The solution came in the form of the “arts & crafts“ ceramics oven at a local school, combined with a home made gas-chamber for creating an inert athmosphere inside the oven during the annealing pro