Nope, plug and play. It’s a new printer. I’ve had a few print fails so far, mostly since I’m still learning all of this.

Unscrew cap, fill it with 1 row of magnets (the hole is sized to be just larger than the magnet diameter so it doesn’t rattle), rescrew cap. The tube is dovetailed to a matching slot on the holder that prevents it from rotating so the viewing “window” is always visible from the front.