A blasting machine for bodywork can be used to remove rust, old paints, oxidation and deteriorated coatings from frames, underbodies, wheels, suspension, body shells and industrial-vehicle structures. The choice must take into account above all the thickness of the metal and the extent of the work: SABIX 8 prioritises control and portability, WATER BLAST reduces dust lifting thanks to abrasive pre-dampening, while SABIX 120 offers greater autonomy for frames, trailers and extensive surfaces.
Where blasting is used in bodywork
Blasting can be part of operations such as:
- ✓ Classic-car restoration
- ✓ Frame reconditioning
- ✓ Industrial-vehicle repair
- ✓ Recovery of trailers and semi-trailers
- ✓ Underbody treatment
- ✓ Wheel restoration
- ✓ Maintenance of axles and suspension
- ✓ Recovery of operating machines
- ✓ Treatment of disassembled parts
- ✓ Rust removal before welding
- ✓ Treatment before primer and painting
- ✓ Anti-corrosion maintenance
The most frequently treated surfaces include:
- ✓ Iron and steel
- ✓ Cast iron, aluminium and alloys
- ✓ Sheet metal and profiles
- ✓ Welds and painted components
Blasting can make the surface clean, inspectable, free from non-adherent material, consistent with a new protective cycle and easier for the bodywork technician to assess.
However, it does not solve loss of thickness, perforating corrosion, deformation, cracks, defective welds, structural problems or incorrect previous repairs. The metal must be checked after coatings have been removed and before proceeding with primer, filler or painting.
Automotive bodywork and industrial bodywork
Criticalities and operating volumes change radically according to the type of vehicle to be restored:
Automotive bodywork
This normally includes body shells, doors, bonnets, mudguards, floor panels, separate frames, underbodies, wheels, suspension and classic-car parts. The main criticalities are reduced thicknesses, large flat panels, already deformed sheet metal, welds, fillers, galvanic treatments, aluminium parts, sealants, cavities and components that have not been disassembled. The treatment must be progressive and localised.
Industrial bodywork
This includes truck frames, subframes, bodies, trailers, semi-trailers, bus structures, agricultural-vehicle frames, operating machines, platforms, supports, metal structures and welded structures. These surfaces are generally more extensive and may present thick paints, widespread corrosion, old primers, encrustations, welds, profiles, hard-to-reach areas, cavities and several repainting cycles. In this context, autonomy, airflow, hose length and dust management directly affect productivity.
Treatable surfaces and components
Metal treatment requires specific precautions according to the structural robustness of the part:
Frames, subframes, trailers and semi-trailers
Frame blasting can be used to remove rust, old paints, oxides, residues, encrustations, deteriorated protective products and contamination around welds. Before the operation, bearings, bushings, pipes, wiring, braking systems, control units, plates, threads, ground surfaces and sensitive components must be removed or protected. A robust frame normally allows more incisive treatment than a thin external panel, but abrasive and pressure must still be consistent with the metal and the subsequent cycle.
On trailers and semi-trailers, blasting is suitable for frames, longitudinal members, cross-members, supports, axles, metal platforms, welded structures and parts subject to corrosion. Their dimensions often make a blasting machine with limited autonomy inefficient. For this type of work, the following must be assessed: WATER BLAST when dust must be contained; SABIX 120 when operating continuity is a priority; impermeable or easily cleanable area; collection of abrasive and paint; compressor; operator access; vehicle handling.
Classic-car body shells
A classic body shell may present thin sheet metal, previous welds, filler, hidden corrosion, overlaps, joints, reinforcements, already thinned areas, several paint layers and undercoats of different nature. Blasting can make repairs, holes, cracks, corrosion, welds, discontinuities and weakened metal visible. The treatment must avoid concentrating the jet on one area for excessive time. Particularly sensitive areas include roof, bonnet, doors, large mudguards, side panels, surfaces without ribs and sheet metal already overheated or deformed.
Wheels, suspension and cabs
Wheels can be made of steel, aluminium or light alloys. The treatment can remove paints, oxides, residues, corrosion and old coatings, while protecting mating surfaces, threads, valves, sensors, machined surfaces and markings. Aluminium requires abrasive and a circuit free from ferrous contamination. Arms, springs, axles, supports, disassembled hubs, brackets and metal casings can also be treated, carefully masking internal components.
Truck cabs, bodies and panels can include both robust profiles and relatively thin sheet metal. The process must be differentiated: greater capacity on frames and reinforcements; a more controlled configuration on panels; reduced pressure near edges; quick passes on flat surfaces; protection of glass, seals and components.
Why sheet metal can deform
During blasting, the panel receives a succession of impacts. On thin sheet metal, the risk of deformation increases with high pressure, abrasive that is too hard, large grain, nozzle very close to the surface, perpendicular jet, dwelling on the same area, wide and poorly ribbed panel, temperature and thickness already reduced by corrosion.
What result is required from the treatment
The technical adjustment defines the effectiveness of the subsequent cycle on the body shell or industrial structure:
- Rust removal: Rust can be superficial, widespread, stratified, present under paint, localised around welds or penetrating. Blasting removes accessible corrosion products and allows the remaining metal to be assessed. When holes, deep craters, flaking, structural reduction or degraded welds emerge, repair work is required.
- Paint stripping and pre-painting treatment: Difficulty depends on paint type, elasticity, thickness, number of layers, adhesion, undercoat, presence of filler and geometry. Some brittle paints are removed quickly; elastic products, sealants and bituminous protective coatings can absorb the impact. After the cycle, dust, residual abrasive, humidity, oil, salts and flash rust must be checked.
- Weld cleaning and roughening: This removes oxides, residues and old paints around the bead, but does not correct porosity, lack of fusion or cracks. Roughening creates a surface profile that must be proportionate to primer thickness: an excessive profile can increase consumption, leave exposed peaks or create final aesthetic defects.
Blasting technologies for bodywork
FEVI plant and pneumatic solutions are divided according to the scale and context of the work area:
Controlled low-pressure blasting
It is suitable for localised operations, components, classic cars, relatively sensitive sheet metal, wheels, disassembled parts, welds and small frames. Reduced pressure must be combined with fine abrasive, controlled dosage, suitable nozzle, cautious distance and quick passes. SABIX 8 is a portable open-blasting machine with abrasive-flow adjustment and modular operating pressure, also indicated by FEVI for Bodywork applications.
Portable open blasting
Open blasting makes it possible to reach longitudinal members, cross-members, corners, welds, frames, irregular structures, axles, trailers and semi-trailers. It is the most flexible technology in terms of geometry, but requires delimitation, screening, collection, operator protection, dust control and residue management.
Blasting with pre-dampened abrasive
WATER BLAST introduces a controlled amount of water into the air-abrasive mixture before outlet. Dampening increases particle weight and reduces dispersion into the air, while maintaining the mechanical action of the jet. The technology is positioned between completely dry blasting and systems with high water input. It is useful for trailers, frames, bodies, truck structures, operating machines, outdoor work, areas close to the body shop and operations where dust is a critical issue. It is more correct to speak of dustiness reduction, avoiding any promise of absolute absence of emissions in all conditions.
High-autonomy blasting
A blasting machine with a 120-litre tank reduces interruptions during trailer paint stripping, frame treatment, processing of large structures, maintenance of industrial vehicles, prolonged cycles and subcontracting work. SABIX 120 is wheeled and can be configured with double or triple pneumatic remote control. The 120-litre tank is intended to improve continuity on extensive surfaces. The solution must be included in suitable organisation: compressor; work area; containment; operator protection; collection; abrasive availability; subsequent treatment.
Dry blasting or blasting with dampened abrasive
The choice of carrier fluid changes the logistics of the restoration work area:
- Dry blasting: This may be preferred when the metal must remain dry, a confined area is available, the abrasive must be collected dry, primer must be applied quickly, there are no particular restrictions on dust or the subsequent cycle does not tolerate humidity. The main aspects to manage are dust, dispersion, cleaning, visibility and protection of surrounding areas.
- Dampened abrasive: This may be preferred when working outdoors, buildings or vehicles are nearby, dust lifting must be reduced, the job involves a trailer or extensive structure and the work area can collect damp residues. Water, sludge, wet abrasive, removed paint, drainage, drying, flash rust and the subsequent protective cycle must be managed. On newly exposed steel, drying times and methods must be planned before starting work.
How to choose the abrasive in bodywork
The selection of abrasive media affects finish, recirculation and management of incompatible materials:
- Steel, robust frames and thin sheet metal: On frames, technical mineral abrasives capable of removing rust, paints, primers and oxides can be assessed according to hardness and roughness. On thin sheet metal, more conservative configurations are preferable: fine grain, abrasive that is not excessively aggressive, reduced dosage, reduced pressure and quick passes.
- Aluminium and wheels: The abrasive must be compatible, free from iron contamination, stored separately and used with clean equipment; abrasive and equipment previously used on steel can transfer ferrous particles and encourage subsequent surface oxidation. For wheels, the material must be identified first, steel or alloy, because they require different abrasives, pressures and final finishes.
Avoid generic sands: Damp, unclassified materials, with irregular particle size or potentially containing respirable crystalline silica, must not be used. Abrasive blasting can generate hazardous exposure due both to the abrasive and to the paint or coating removed.
Pressure, nozzle and compressor
Pressure must be established according to thickness, metal, contaminant, abrasive, roughness and geometry. A small nozzle concentrates the jet, reduces the working strip and facilitates localised areas, while a larger nozzle covers a wider strip and increases productivity and air consumption. Distance and angle modify point energy: a perpendicular jet concentrates impact more strongly, while a more grazing angle can help detach the coating and reduce direct stress on the sheet metal. The compressor must be sized according to the real consumption of the nozzle: SABIX 8 configured with a 3 mm nozzle has an indicative consumption of approximately 550 litres per minute at 7 bar. Condensate and oil in the line can cause clogging, agglomerate the abrasive, contaminate the metal and compromise the primer, requiring pneumatic separators and dryers.
Dust, residue management and safety
During blasting, abrasive dust, paint fragments, rust, primer, filler, protective products, bituminous residues and metal particles can be produced. Old automotive and industrial paints may contain hazardous substances. NIOSH reports that dust generated during bodywork operations can contain lead and chromium from coatings and be harmful to the respiratory system and nervous system. Measures must include containment, tarpaulins, cleanable flooring, extraction or ventilation, protection of nearby areas, residue collection, controlled cleaning, limited access and correct waste management. Dust must never be dispersed with compressed air.
The risk assessment must also consider noise, compressed air, lifting and work under the vehicle. Blasting helmet, respiratory protection, breathable air, hearing protection, gloves, suit, footwear, delimitation, ventilation, extraction and fall-arrest systems may be required. Before treatment, the battery, electrical system, tanks, fuel lines, pneumatic system, braking components, moving parts and lifted vehicle must be made safe.
Technology decision table
| Requirement | Indicative technology | Why | Aspects to check |
|---|---|---|---|
| Small rusty area | Controlled jet | Allows a localised operation | Thickness and abrasive |
| Wheels and disassembled components | SABIX 8 | Portability and adjustment | Material and surfaces to protect |
| Classic-car body shell | SABIX 8 with conservative configuration | Greater control on sheet metal | Deformation, filler and welds |
| Automotive frame | SABIX 8 or WATER BLAST | Control or dust reduction | Dimensions and context |
| Trailer or semi-trailer | WATER BLAST | Reduces dispersion on large structures | Collection of water and residues |
| Large truck frame | SABIX 120 | Greater continuity | Compressor and containment |
| Extensive industrial structure | SABIX 120 | Reduces refills | Nozzle, airflow and collection |
| Courtyard area near the body shop | WATER BLAST | Better contains dustiness | Wind, drainage and protection |
| Thin sheet metal | SABIX 8 | More controllable configuration | Pressure, distance and speed |
| Long operation in a confined area | SABIX 120 | 120-litre autonomy | Ventilation and operator protection |
Three FEVI models recommended for bodywork
1. SABIX 8 – Professional low-pressure blasting machine
For components, frames and controlled work
SABIX 8 is a portable open-blasting machine with 8-litre tank, pneumatic abrasive-flow adjustment, tank vibration and remote control. The machine can work with reduced pressures and is also indicated by FEVI for applications in bodywork, metal, industry and restoration.
Uses in bodywork: rusty areas; automotive frames; classic body shells; wheels; disassembled components; suspension; axles; brackets; welds; small vehicles; preliminary tests; localised operations.
Strength: It offers good control of pressure, abrasive, dosage, distance and impact area. The compact configuration makes movement in the body shop easier and allows work without setting up a large-capacity machine.
Limit to assess: The 8-litre tank involves frequent refills on trailers, large frames, industrial vehicles or continuous work. Despite adjustability, the risk of deforming sheet metal remains when the jet is used incorrectly.
Recommended user: body shop; restorer; workshop; vehicle preparer; maintenance technician; company working on classic cars; operator treating components and small surfaces.
2. WATER BLAST – Water-assisted blasting machine
For frames, trailers and operations with dust to contain
WATER BLAST uses abrasive pre-dampening to reduce dust lifting while maintaining the mechanical action of blasting. The operator can adjust water flow from the working position and the system stops water delivery when the jet is stopped.
Uses in bodywork: truck frames; subframes; bodies; trailers; semi-trailers; bus structures; automotive metal structures; commercial vehicles; large underbodies; outdoor work; areas close to other departments; removal of rust and old paints.
Strength: The main advantage is reduced dust dispersion. This is particularly important when working in the body shop courtyard, near parked vehicles, near buildings or on old coatings that generate many residues.
Limit to assess: Contaminated water, wet abrasive, removed paint, drainage, drying, flash rust, protection of electrical components and subsequent cycle must be managed. It must not be described as free from emissions or residues in every condition.
Recommended user: industrial body shop; commercial-vehicle repairer; blasting company; trailer maintenance technician; company treating frames; workshop with an organised outdoor area.
3. SABIX 120 – 120-litre professional blasting machine
For large frames, trailers and prolonged work
SABIX 120 is a professional open-blasting machine with 120-litre tank. It can be configured with double or triple pneumatic remote control and allows the operator to manage start, stop and, in the most complete configuration, the abrasive mixing valve from the working position.
Uses in bodywork: truck frames; trailers; semi-trailers; bodies; large platforms; buses; agricultural vehicles; operating machines; welded structures; large metal structures; professional subcontracting work; extensive paint-stripping and de-oxidation cycles.
Strength: The 120-litre tank reduces interruptions for abrasive loading. The advantage emerges when the surface is large, the coating is extensive, the cycle is continuous, the area is already organised, the compressor is suitable and productivity justifies a larger-capacity machine.
Limit to assess: It is not the main solution for touch-ups, small components, thin external panels or body shops without a confined area. On thin panels, it must be used only with suitable configuration, abrasive and technique. The compressor must be carefully sized: for example, the SABIX 8 Store data sheet reports a consumption of approximately 550 litres per minute at 7 bar with a 3 mm nozzle, a value that increases significantly with industrial diameters.
Recommended user: industrial body shop; truck repairer; trailer maintenance technician; blasting company; fleet reconditioning company; body-equipment manufacturer; workshop with large-scale work.
FEVI model comparison table
| Model | Technology | Recommended use | Strength | Limit to assess |
|---|---|---|---|---|
| SABIX 8 | Adjustable open blasting | Components, classic cars, wheels and smaller frames | Control and portability | 8-litre autonomy |
| WATER BLAST | Pre-dampened abrasive | Trailers, frames, industrial vehicles and dust-sensitive areas | Reduction of dustiness | Water, damp residues and flash rust |
| SABIX 120 | 120-litre open blasting | Large frames, semi-trailers and extensive work | Operating continuity | Compressor, containment and control on sheet metal |
Frequent mistakes in paint stripping and vehicle treatment
Mapping unsuitable operating behaviours helps avoid irreversible deformation and waviness on sheet metal:
- Using an overly aggressive configuration on sheet metal or insisting in a single pass: This can cause deformation, waviness, etching or loss of thickness, requiring extensive additional panel-beating work. Less adherent areas are cleaned first, while the jet continues to strike the already exposed metal.
- Confusing autonomy with delicacy or using SABIX 120 as a universal solution: A larger tank allows longer work, but does not make the jet more or less aggressive.SABIX 120 is suitable for large structures, not automatically for roofs, bonnets and thin body-shell panels.
- Using the same abrasive on steel and aluminium or blasting assembled components: This can cause contamination and produce incorrect finishes. Abrasive can also penetrate and damage bearings, bushings, guides, threads, oil seals and internal cavities of axles.
- Not removing grease and oils or not identifying the old paint: Oily substances contaminate abrasive and metal. In addition, lead and chromium may be present in old coatings and require specific procedures and dedicated PPE to avoid damaging the respiratory system and nervous system.
- Using WATER BLAST without planning drying or failing to collect water: Newly exposed metal can re-oxidise, flash rust, before primer application if ventilation and timing are not planned. Dampening reduces airborne dispersion, but produces wet residues that must be collected, just as an undersized compressor causes pressure fluctuations and makes the finish irregular.
FAQ on blasting machines for bodywork
Which FEVI blasting machine should be chosen for a body shop?
The choice depends on the type of work. SABIX 8 is suitable for components, classic cars and controlled operations. WATER BLAST is more consistent for frames, trailers and structures when dust must be reduced. SABIX 120 is intended for large frames and prolonged work. There is therefore no single best model for all applications.
Is SABIX 8 suitable for classic cars and thin sheet metal?
Yes, it can be assessed on frames, components and portions of body shell because it allows controlled jet adjustment. Compactness and the ability to work with reduced pressures do not, however, eliminate the risk of deformation. On roofs, doors, bonnets and large panels, samples must be carried out with fine abrasive, suitable distance and quick passes.
Does WATER BLAST blasting with pre-dampened abrasive eliminate dust?
WATER BLAST reduces dust lifting through abrasive pre-dampening. The result depends on surface, pressure, abrasive, water and environmental conditions. It is therefore more correct to speak of reducing dustiness. Abrasive, paint, rust and contaminated water must still be collected.
When is it advisable to choose the high-capacity SABIX 120 blasting machine?
SABIX 120 is suitable for trailers, truck frames, buses, operating machines and large structures. The 120-litre tank reduces refills during prolonged cycles. It is not normally the first choice for small components or thin panels, especially when the compressor and work area are not sized for open blasting.
Can aluminium parts and complete wheels be blasted?
Yes, but aluminium requires abrasive, equipment and circuit free from ferrous contamination, with reduced pressures and times. For wheels, tyres, valves and sensors must be removed or protected before treatment, identifying whether the structure is steel or alloy in order to calibrate the final roughness parameters without damaging mating surfaces.
How can immediate re-oxidation, flash rust, be avoided after the WATER BLAST cycle?
The surface must be rinsed or cleaned according to the planned cycle, dried quickly and checked before primer. Temperature, ventilation, timing and the subsequent product must be planned. On exposed steel, the process should not be started without already having organised the drying and protection phase.
Tell us the requirements of your body shop
Controlled and progressive paint stripping of a sensitive classic-car body shell requires configurations, fine abrasives and pressures opposite to those needed for heavy de-oxidising treatment on a truck frame or an extensive industrial semi-trailer. The ideal choice between SABIX 8, WATER BLAST and SABIX 120 systems depends on sheet-metal thickness, part geometry and the context of your department. To assess the optimal configuration correctly, tell us the type of vehicle or component, total surface area, type of metal, sheet-metal thickness, coating or contaminant to be removed, need to contain airborne dust and the compressor at your disposal.
FEVI verifies technology, professional abrasive, nozzle, pressure, recovery and airflow together with the bodywork technician, to support efficient, rapid and structured restoration.
