An electrically powered compact machine suitable for the preparation of concrete oors but equally effective on steel surfaces. Continuous reverse air jet ltration cleaning. Recognised as the modern, fast, versatile, environmental, dust free means to dry abrasive cleaning and texturing of horizontal or slightly inclined surfaces. This eliminates the mess normally associated with hand blasting and leaves an ideal surface for coatings and overlays to be applied. Abrasives and debris are contained to prevent hazardous working and environmental pollution.