Activate Salvaging Station by tapping it, returning the noncreature artifact with mana value 1 or less from your graveyard to the battlefield.
When the noncreature artifact enters the battlefield, Weapons Manufacturing and Grinding Station trigger.
Resolve the Grinding Station trigger, untapping it.
Resolve the Weapons Manufacturing trigger, creating a Munitions artifact token.
When the Munitions token enters the battlefield, Grinding Station triggers, untapping Grinding Station.
Activate Clock of Omens by tapping the noncreature artifact returned in step 1 and the Munitions token, untapping Salvaging Station.
Activate Grinding Station by sacrificing the noncreature artifact.
Repeat.
This loop turns the recursive recursion of **Salvaging Station** into a self-sustaining engine by cycling a cheap artifact back and forth from the graveyard. Every time that artifact returns, **Weapons Manufacturing** and **Grinding Station** trigger to generate a Munitions token and keep the mill station primed for action. Meanwhile, **Clock of Omens** acts as the crucial glue that lets you tap the newly entered artifact and its token to untap your Salvaging Station, allowing you to feed the artifact right back into **Grinding Station**'s sacrifice cost and repeat the entire process indefinitely.