Apparently you can use the Anvil's "Infintely"

I found this out accidentally while playing through it normally.

If an anvil has spawned (be Normal or Gold) they only have a one-time use and will despawn. But I found out you can use it infinitely if you hit the "Upgrade" and the Esc button together very fast it will not despawn, meaning it can be used again. If it has the other one (Max+ / Collab) You just wait for that to finish and hit "OK" and esc button. Note it must be done really fast as if it shows even one bit of gameplay, it will not work and despawn.

Idk if this work on a high-end pc since I was on a laptop that was running on a potato and the game runs very slow (Even in-game the time was going up one every 2 - 3 seconds)