What is the first step in the established packing routine for Boutet?

The first step in the established packing routine for Boutet involves completing the bottom of the base. This step is critical as it ensures a solid foundation for the entire mold packing process. Properly forming the base helps to support the subsequent layers and maintains the integrity of the mold when it is subjected to the thermite reaction.

A well-prepared bottom allows for better control over the molten metal flow and helps avoid issues such as leaks or misalignment during the welding process. Starting with the bottom of the base emphasizes the importance of structural stability and sets the tone for the rest of the packing procedure.

Other options, though relevant in the context of mold preparation, do not address the foundational step required to achieve a successful weld. Each of those steps may follow after establishing a solid base, but they cannot replace the critical need for a well-packed foundation.