#46 Aluminum Oxide 8 LBS Coarse Sand Blasting Abrasive - Durable Cut

In this review of the #46 Aluminum Oxide 8 LBS coarse abrasive, the bottom line is straightforward: this is for serious users who need a hard, long-lasting blasting media that cuts quickly and resurfaces reliably. Our review found it especially useful in blasting cabinets and for gun parts where a sharp, aggressive grit is needed. The product excels because of its high hardness and reusability, making it a practical choice for metalworkers, fabricators and glass etching tasks that demand consistent performance.

Key Features

• High hardness: As the second hardest mineral after diamond, the abrasive cuts efficiently across metals and glass for effective surface prep.
• Long lasting media: The sharp angular grit retains cutting edges longer than many alternatives, reducing media replacement frequency.
• Non-reactive: The chemical stability means it will not interfere with coatings or cause unwanted reactions during pretreatment.
• Low silica content: With no detectable crystalline silica, it reduces one common source of abrasive breakdown and health concern compared with silica media.
• High density: Specific gravity around 3.9 and bulk density of 115-125 lbs/ft3 deliver aggressive momentum for faster cleaning and etching.

Who It's For

The #46 Aluminum Oxide is aimed at professional and advanced hobbyist users who operate blasting cabinets or portable guns and need a coarse, durable abrasive that textures and cleans metal and glass. It is a strong match for body shops, gun smiths, metal fabricators and anyone who values a reusable, high-performance media for repeated cycles.

Those who should look elsewhere include operators seeking a very fine or decorative finish, or users who require a specifically soft or friable media for delicate surfaces. If a softer, less aggressive profile is needed, consider a different media type designed for gentle finishing.

Pros & Cons

Pros

• Very effective cutting and etching due to its high hardness and sharp angular grit.
• Longer service life compared with silica, making it cost-effective over multiple cycles.
• Non-reactive composition that preserves coating integrity during surface preparation.
• High density provides faster cleaning action on tough contaminants and scale.

Cons

• Coarse, aggressive grit may be too harsh for delicate or precision surface finishing tasks.
• Some buyers note mixed views on perceived value versus price, so cost sensitivity varies by user.

Specifications

Product	#46 Aluminum Oxide - 8 LBS
Grit	Coarse (sharp angular grit)
Specific Gravity	3.9
Bulk Density	115-125 lbs/ft3
Chemical reactivity	Non-reactive
Silica content	No detectable crystalline silica
Made in	Canada

Our Verdict

The #46 Aluminum Oxide 8 lb coarse abrasive is a solid choice for users who need a tough, reusable blasting media that cuts fast and lasts. It delivers good value for metalworking and glass etching thanks to its hardness, density and low breakdown rate, but it is not ideal for fine finishing or extremely delicate parts.

Frequently Asked Questions

Can this abrasive be used in a blasting cabinet?
Yes, it is well suited for blasting cabinets and portable guns and performs reliably in both wet and dry applications.

Is the media safe for glass etching?
Yes, the hardness of aluminum oxide makes it effective for etching glass surfaces without excessive breakdown.

How reusable is this media?
The sharp angular grit and high density give it a much longer cycle life than typical silica media, reducing replacement frequency.