Cabinet Blasting — Definition
Cabinet blasting is a system in which the abrasive is propelled within a controlled environment inside an enclosed chamber, with the part either fixed in place or carried through on a conveyor. In Europe and in Türkiye it is a legal requirement when working with abrasives that carry a high silicosis risk (silica sand).
- An enclosed structure — no dust escapes and the workshop stays clean
- Abrasive reclamation — the abrasive is collected in the cabinet, screened and reused
- An integrated dust extraction and filter system
- Operator gloves built into the window — no direct contact
- Lighting and ventilation inside the cabinet
- Size: 1×1×1 m (manual) up to 5×3×3 m (automatic, conveyorised)
Portable Blasting — Definition
Portable blasting is equipment made up of a movable pressure vessel, a gun and a hose system, used in the open air or in large-volume spaces. The USEL EasyBlast (10 L) and FastBlast (25 L) fall into this category.
- Wheeled or carried by hand
- Site work — large structures, ships, bridges, warehouses
- Use in the open air (silica sand is BANNED; garnet and glass bead are suitable)
- Full-face protection plus an air-fed hood is essential for the operator
- The abrasive is single-use (reclamation is difficult)
- Highly flexible — it works in any environment
Side-by-Side Comparison
| Criterion | Cabinet Blasting | Portable Blasting |
|---|---|---|
| Space requirement | Fixed (5-30 m²) | Mobile — anywhere |
| Part size | Whatever fits the cabinet (max ~3 m) | Unlimited |
| Production volume | High (series production) | Low to medium (one-off work) |
| Abrasive reclamation | Yes (automatic) | Difficult or impossible |
| Dust control | Excellent (enclosed) | Depends on operator PPE |
| Operator safety | High (glove window) | Full-face plus air supply essential |
| Investment level | High | Low |
| Operating cost | Low (reclamation) | High (single-use abrasive) |
| Flexibility | Low | High |
| Legal position | All abrasives permitted | Silica sand BANNED |
Which One for Which Job?
Choose Cabinet Blasting
- Series production — the same part again and again (automotive sub-industry, machine parts)
- Precise surface preparation — a controlled profile and consistent quality
- Work where silica sand has to be used (within the legal requirements)
- Integration with a paint line — blasting and painting in sequence
- High volume → abrasive reclamation becomes economic
- An enclosed workshop standard — no dust emission permitted
Choose Portable Blasting
- Site work — bridges, ships, warehouse restoration
- Large structures → they will not fit a cabinet
- Low volume → a cabinet does not pay for itself
- Flexibility is critical → many different parts
- Restoration, antiques, works of art — every piece is different
- A mobile working area — a contractor or an applicator firm
Types of Blast Cabinet
- MANUAL CABINET — the operator holds the part through a glove window, for small parts (1×1×1 m)
- AUTOMATIC CABINET — conveyorised, multiple nozzles, for series production (3×3×5 m)
- PASS-THROUGH TYPE — the part enters at one end and leaves at the other; continuous production
- LOAD-AND-REPOSITION CABINET — for large parts, with the position changed by hand
- SPECIAL ROBOTIC CABINET — with a robot arm, for very complex parts (aerospace, automotive)
The Abrasive Reclamation System
The greatest advantage of cabinet blasting is that 70-90% of the abrasive used can be reclaimed:
- The abrasive settles to the floor of the cabinet
- Vacuum or screw collection → it is sent to the screening system
- Screening — grain that has broken down too far (dust) is separated out
- The remaining grain is returned to the silo or hopper
- Fresh abrasive is blended in at 30-50%
- The result: abrasive consumption falls by 50-70% (against portable blasting)
The Reclamation Investment
A reclamation system delivers a meaningful saving in high-volume workshops. Where production volume is low the case for the investment may not hold; it has to be assessed against the workload of the particular workshop.
Operator Safety — the Critical Difference
The Operator at a Cabinet
- The part is held through a glove window
- The operator is outside the cabinet, breathing normal air
- Risk from rebounding abrasive: ZERO
- Dust exposure: minimal thanks to cabinet extraction
- Ordinary PPE is enough (goggles and a mask)
The Operator in Portable Blasting
- Blasting directly with the gun
- The operator stands inside the cloud of abrasive
- Rebounding abrasive: a risk to the face and skin
- Dust exposure: high
- Full-face protection plus an air-fed hood is ESSENTIAL
The Legal Framework (TÜRKİYE)
- Blasting with silica sand — in the open air or with portable equipment it is BANNED (silicosis risk)
- With garnet, glass bead or aluminium oxide, PPE is essential in portable use
- An enclosed cabinet is suitable for every abrasive (no legal difficulty)
- Inspection by an occupational health and safety specialist — the blasting procedure belongs in the risk assessment report
- Annual periodic inspection — compressor, filters and PPE
- Dust emission — the regulations of the Ministry of Environment and Urbanisation in Türkiye