What should workers prepare before blasting with Garnet abrasive?

Garnet abrasive blasting is a key step in metal surface preparation. It’s commonly used to remove rust, old coatings, and to create a standard surface profile before painting. However, this job also carries risks if you're not properly prepared. So, what should workers bring along? Below is a full checklist to help ensure a safe, effective, and technically correct blasting process using Garnet.

1. Personal Protective Equipment (PPE)

        - Blasting Helmet: Protects against dust and flying debris, usually with built-in air filtration.

        - Thick fabric or synthetic leather jacket: Resists abrasion and protects skin from high-pressure sand.

        - Cut-resistant gloves: Protect hands while handling the blasting nozzle and hose.

        - Safety goggles or dust-proof face mask: Prevent fine particles from reaching the eyes.

        - High-ankle safety boots: Shields feet from rebounding abrasive and prevents slipping on scattered grit.

        - Air filter system (for breathing): Especially needed in enclosed spaces to avoid inhaling fine dust.

Note: Do not use regular medical masks during blasting — they don’t filter out fine dust or harmful fumes.

2. Technical Equipment to Check Before Blasting

        - Abrasive blasting machine: Inspect hoses, control valves, and nozzle condition.

        - Abrasive hopper/tank: Ensure the garnet is dry, not clumped, and free from contaminants.

        - Air compressor: Must run smoothly and have a moisture separator to prevent performance issues.

        - Dust collector or ventilation system (if working indoors): Helps control airborne dust for better health protection.

3. Choose Quality Garnet – Avoid Low-Grade Abrasives

Why is Garnet the preferred abrasive?

        - High hardness, low dust

        - No free silica → safer for health

        - Delivers consistent surface profile (SA 2.5 – SA 3.0)

        - Can be reused 2–5 times with proper recovery systems

Recommended mesh sizes:

        - Mesh 30–60: For medium rust, old paint

        - Mesh 20–40: For heavy rust, thick coatings

        - Avoid using too fine mesh (< 80) — it can clog the nozzle and reduce blast consistency.

4. Extra Tips for Smooth Operation

        - Always test the machine before starting: Helps adjust the right pressure and avoid blast surges

        - Never stand too close to the surface: Maintain a safe distance of 30–50 cm

        - Use proper lighting if working inside tanks or enclosed areas

         A successful blasting job isn’t just about good equipment or materials — it also depends on how well the worker is prepared. By choosing quality Garnet abrasive and wearing the right protective gear, you’ll not only improve cleaning results but also reduce risks to health and equipment.

         Need help choosing blasting gear or the right mesh size? Contact Garnet Vina – we’re here to support you every step of the way, from preparation to project completion.