How to Choose the Right Abrasive Grit Media for Your Blaster
By Quality Tools & Supplies for Hobbys, DIY & Crafts - Micro-Mark Tools | Published: 2026-10-26
Category: Buying Guides
Learn the key differences between crushed glass grit and glass bead grit for your grit blaster. This guide helps you select the right blast media based on your project needs.
Quick Answer
Choose crushed glass grit for aggressive paint stripping and heavy tarnish removal, and glass bead grit for gentle decal removal and achieving a smooth, peened finish on delicate parts.
Why Media Shape Matters
The shape of the abrasive particles directly affects how they cut and finish a surface. Crushed glass grit has sharp, angular edges that bite into coatings and rust, making it ideal for fast material removal. Glass bead grit consists of spherical particles that peen the surface rather than cut, producing a uniform satin finish without removing base material.
This fundamental difference means you cannot simply swap one for the other and expect the same result. Using glass beads where you need aggressive stripping will waste time, while using crushed glass on fine plastic details can damage the part.
Compatibility with Your Blaster
Both media types are designed for use with grit blasters, but not all blasters handle every media equally. Crushed glass grit is generally coarser and may require a blaster with a larger nozzle and higher pressure to flow properly. Glass bead grit is finer and works well with standard hobby-grade blasters like the MicroLux Grit Blaster.
Always check your blaster's manual for recommended media size and hardness. Using media that is too coarse for your equipment can clog the nozzle or damage internal seals.
Decision Rules for Choosing Grit Blaster Media
- Heavy paint stripping or rust removal: Choose crushed glass grit. Its angular particles provide stronger cutting action to quickly remove thick coatings and heavy corrosion.
- Removing decals or light tarnish from plastics: Choose glass bead grit. The spherical beads gently lift decals and light oxidation without gouging or melting the underlying plastic.
- Achieving a smooth, uniform finish on metal: Choose glass bead grit. It produces a peened satin surface that looks consistent and does not leave deep scratches. For a bright polished finish, follow glass bead blasting with a polishing compound.
- Working on fine model details or soft metals: Choose glass bead grit. It will not affect fine detail on models and is safe for brass, aluminum, and other soft metals. Test on a scrap piece first to confirm the pressure and distance settings.
- Budget-conscious one-time projects: Crushed glass grit is often priced lower than glass beads and delivers aggressive performance, making it cost-effective for heavy-duty jobs.
Product Facts
- Crushed Glass Abrasive Grit Media, 5 Lbs.: Crushed glass abrasive grit is built for heavier tarnish removal, moderate cleaning, and aggressive paint stripping. If your project involves stripping thick paint or removing heavy rust from metal, this media will cut through the job faster than glass beads.
Crushed Glass Abrasive Grit Media, 5 Lbs. - Glass Bead Abrasive Grit, 5 Lbs.: Glass bead blast media removes applied decals without damaging fine detail in plastics and produces a peened, smooth, uniform finish. For restoring model kits or cleaning delicate metal parts, glass beads let you remove paint or tarnish without erasing fine surface details.
Glass Bead Abrasive Grit, 5 Lbs.
Which Media Is Right for You?
Best For
- Hobbyists restoring metal parts or stripping paint from large surfaces
- Modelers who need to remove decals or light paint from plastic kits without damaging detail
Not For
- Crushed glass is not suitable for delicate plastic parts or fine surface finishing
- Glass beads are not effective for heavy rust removal or thick paint stripping
