Published 01/31/2025

Automotive Blasting: When to Use a Blast Room or Cabinet

Besides understanding that the size is the biggest differentiator between a blast room and a blast cabinet, it is critical to know when to use a blast room versus a blast cabinet, which is not always a clear-cut choice.

Ask The Expert

Brandon Acker, President, Titan Abrasive Systems

Footprint. Accommodating a blast room can be a challenge, not simply because of the oversized footprint but also because of potential obstructions (for example, overhangs) that can make installation difficult or impossible, even in the most spacious facility. Conversely, a blast cabinet can not only be dropped almost anywhere, but it can also be easily moved to various locations within the plant as needed.

Accessibility. Operators do not physically enter a blast cabinet. Instead, parts are put in place through a swing door; operators then work the internal blast controls by inserting their arms into the gloves attached to glove holes on the cabinet, viewing the part to be blasted through a window, and turning the blast on and off using a foot pedal. However, a standard-size blast room generally features one personnel door.

Part size and quantity. A blast cabinet is the perfect vehicle for blasting smaller parts. If a part is exceedingly large, the blast room is a necessity. When blasting smaller parts in large quantities, it may be more convenient to lay them all out in a blast room rather than putting a few at a time into the cabinet.

Part weight. Because blast rooms are exceptionally heavy, a solid foundation of at least 6-inch-thick concrete is required to support the blast room itself as well as parts that can carry substantial weight. If you have a cabinet and are blasting parts that are more than 1,000 pounds, you need to provide the cabinet with structural support. Furthermore, the weight of the parts may require the addition of a turntable and/or track extension so the part can be spun around inside the cabinet to ensure all surfaces get blasted.

Ergonomics. In a blast room, a sizable percentage of the parts are brought in via forklift, truck, even crane. Most do not require manual intervention, and when they do, the operator has freedom of movement. Blast cabinets present different issues. Using turntables and track extensions facilitates getting parts into the cabinet. But even when parts are on a turntable (or just on the floor), operators often need to pick them up to ensure full blasting coverage. However, the repetitive motion of lifting or rotating parts in a blast cabinet can become physically taxing, even if the parts only weigh 2 or 3 pounds each.

Mixing blast media. If you want to use several types of blast media, whether in a blast room or blast cabinet, it’s essential to clean everything out when switching media types. This includes the blasting equipment and recovery system (though the recovery system can be temporarily blocked off). The changeover and cleaning process for a blast cabinet is relatively quick but can be tedious and time-consuming for a blast room.

Fear factor. With blast cabinets, anyone can walk up in regular clothes, stick their hands in the gloves and start blasting — no safety equipment required. The scenario is quite different for a blast room, which requires operators to work inside the enclosure while wearing full protective gear, including an air-fed helmet.

Cost. While it’s difficult to determine an exact cost, blast rooms are usually more expensive, anywhere from $90,000 to $200,000, or much more, depending on size, type and level of customization. Blast cabinets are much less expensive than blast rooms, generally in the $35,000 to $55,000 range.