I found sand blasting aluminum prior to powder coating is a big no-no. - Caswell Inc. Metal Finishing Forums
![100 Aluminum Oxide - 8 LBS or 3.6kg - Medium to Fine Sand Blasting Abrasive Media for Blasting Cabinet or Blasting Guns. : Amazon.co.uk: DIY & Tools 100 Aluminum Oxide - 8 LBS or 3.6kg - Medium to Fine Sand Blasting Abrasive Media for Blasting Cabinet or Blasting Guns. : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/71VWaC70q-S.jpg)
100 Aluminum Oxide - 8 LBS or 3.6kg - Medium to Fine Sand Blasting Abrasive Media for Blasting Cabinet or Blasting Guns. : Amazon.co.uk: DIY & Tools
![Blasting the Substrate - The Importance of a Correctly Etched Profile - Cerakote UK Ceramic Coatings Blasting the Substrate - The Importance of a Correctly Etched Profile - Cerakote UK Ceramic Coatings](https://www.cerakote.co.uk/wp-content/uploads/2020/07/sandblasting.jpg)
Blasting the Substrate - The Importance of a Correctly Etched Profile - Cerakote UK Ceramic Coatings
![120 Grit Aluminum Oxide Blast Media (12 LBS/5.44kg) - Premium Long-Lasting Sand Blasting Media, High Abrasive Force Sand Blaster Sand for Metal, Sandblasters, Blasting Cabinet, Blasting Guns - TITGGI : Amazon.co.uk: DIY 120 Grit Aluminum Oxide Blast Media (12 LBS/5.44kg) - Premium Long-Lasting Sand Blasting Media, High Abrasive Force Sand Blaster Sand for Metal, Sandblasters, Blasting Cabinet, Blasting Guns - TITGGI : Amazon.co.uk: DIY](https://m.media-amazon.com/images/I/81RnIxZvEfL.jpg)