With "Scrap Factory" active: Special Summon this card and destroy itself; Special Summon "Scrap Golem" from your Deck. Then, you can Special Summon this card by using the effect of "Golem" and Synchro Summon "Scrap Twin Dragon".
Use this card's effect to destroy your "Scrap Beast" or "Scrap Goblin" in order to use the effects of those monsters.
With "Scrap Chimera" on your Graveyard: Special Summon this card while you control another "Scrap" Tuner Monster, preferably "Scrap Beast"; destroy it with this card's effect, and add "Scrap Chimera" to your hand. Normal Summon it and use its effect to Special Summon "Scrap Beast", and Synchro Summon "Scrap Dragon". Use its effect to destroy "Scrap Beast" and a card your opponent controls. With the effect of "Beast", return "Scrap Chimera" to your hand — allowing you to Summon another "Scrap" Synchro monster next turn.
If "Scrap Searcher" is in your Graveyard, Normal Summon a "Scrap" monster and then Special Summon this card, destroy the other Scrap with it, and Special Summon "Scrap Searcher". You can then Synchro Summon "Naturia Beast".
When you Special Summon this card by its own effect, have it destroy itself, and add a "Scrap Chimera" from your Graveyard to your hand (and possibly Special Summon a "Scrap Searcher"). Then, Normal Summon "Chimera", use it to Special Summon this card, and Synchro Summon "Scrap Dragon" (or "Scrap Twin Dragon", if you revived "Searcher").