@r3a9an_k_@DrVooDoo13 If I forget to turn on the shielding gas when TIG welding stainless steel, this orange color appears over the entire workpiece. I think it results from severe oxidation of the stainless steel.
@Erdayastronaut Instead of pushing the rocket, the arms could be used to fuel the rocket a little bit longer. A flexible hose for cryogenic propellants is needed.