The cost of a blasting booth was never only labour. Only part of the abrasive leaving the nozzle ever reaches the workpiece; the rest drops into the pit, the skirts and the extraction inlet, mixed with dust and fractured grit and hauled away as waste. Dust fans run around the clock, and their power bill spread across a full shift is not much cheaper than the operators they replaced. Manual blasting is also inconsistent by nature, since nozzle distance and angle shift with every wrist movement, so overspray and missed areas coexist and rework consumes another round of abrasive. Handing the task to a blasting robot fixes stand-off distance, traverse speed and impingement angle as process parameters, which makes the flow of abrasive predictable and closes the first and largest leak in the cost chain.

Most of the saving comes from coupling the robot cell to a reclaim system rather than from the robot alone. The booth is kept under negative pressure, a screw conveyor or honeycomb floor gathers spent abrasive, a bucket elevator lifts it to an air-wash separator that splits dust and broken grit from reusable media, and the good media returns to the hopper for pressure-fed delivery to the gun. Separator accuracy and make-up rate have to match the robot cycle: too slow and nozzle pressure fluctuates, so impact energy varies across the part, too fast and the system circulates media that does no work while wearing the nozzles and liners faster. Extraction airflow is zoned the same way, raised only while blasting is actually taking place and ramped down between cycles. The same enclosure protects the machine itself, because rails, servos and cable runs all sit in a dust-laden atmosphere, and in poorly sealed cells the first failures are usually mechanical rather than process-related.

When the numbers are compared, abrasive consumption, extraction power and the replacement interval of nozzles, blades and liners belong in the same calculation as the purchase price. Two identical cells can differ by more than twenty percent in abrasive consumption per part simply because one booth seals better, and filter life moves in the same direction. Truman Robotics normally runs a small trial batch first, matched to the workpiece material, coating condition and required cleanliness, and records abrasive use and cycle time per part before fixing the layout of the turntable, roller conveyor or twin-station arrangement and the capacity of the reclaim system. That sequence avoids discovering a mismatch between airflow and throughput after the equipment is already installed. If your booth still depends on handheld nozzles, send us your part list and output target and we will start with a process and cost review before discussing the scope of a retrofit.