Welding CRUSTY Aluminum and RUSTY Steel

THE WORST OF BOTH WORLDS! I have no idea what that fan was covered in but I’m fairly sure I have black lung after welding this one.
Here’s my Instagram- https://www.instagram.com/meltinmetalmobile/
Here’s a few tools I used-
Hand Held Sand Blaster- https://amzn.to/3LnPrSd
Needle Scaler- https://amzn.to/3sKmZmQ
3M Welding Respirator- https://amzn.to/3LnMFME