In the pictures, I see 2 Blasting Stations and 2 Summoning Stations. So, exactly what are we bidding on, one of each plus the three randoms, or is there 2 of each and the randoms?
Salvaging Station Text: Oracle Text: (Tap): Return target noncreature artifact card with converted mana cost 1 or less from your graveyard to the battlefield. Whenever a creature is put into a graveyard from the battlefield, you may untap Salvaging Station.
Just use a welding jar as your sacrifice for grinding, which untaps salvaging, retap salvaging, welding jar infinite loop. With grinding, (tap), Sacrifice an artifact: Target player puts the top three cards of his or her library into his or her graveyard. Whenever an artifact enters the battlefield, you may untap Grinding Station. Infinite decking lol