A powder chamber, in particular for powder polishing devices, including a casing and two functional sectors, whereby the two functional sectors are arranged to be opposite to each other, and whereby at least one functional sector is designed to provide an opening for a working medium such as air or a mixture of powder and air, and whereby the two functional sectors are designed to allow the powder chamber to be locked. The two functional sectors are preferably arranged along an axis and are rotationally symmetric.

Provided is a centrifuge media separator for separating blast particulate from fine particulate carried by air flowing from a blast cabinet and through the media separator. The centrifuge media separator comprises an upper panel, a lower panel, and an outer wall. The upper panel has a central opening formed therein. The outer wall is configured in a truncated logarithmic shape and which extends between the upper and lower panels. The outer wall has at least one particulate escape aperture formed therein. The upper panel, lower panel and outer wall collectively define a curvilinear air passageway having an inlet and an outlet. An air foil extends from the outer wall in to the air passageway. The distance than the air foil extends in to the air passageway is adjustable. The inlet is configured to allow a flow of air to enter the air passageway and circulate therethrough toward the outlet. The escape aperture is configured to exhaust the blast particulate out of the passageway. The central opening is configured to exhaust the fine particulate out of the passageway.

A workpiece processing assembly comprising including a media collection device that is adapted to receive used media from a media blasting chamber. A transport mechanism, coupled to the media collection device, transports used media to a media reclaim system. A first separation device is used to perform a filtering process on the used media to separate non-usable media from usable media. A second separation device is configured to apply a magnetic field to the usable media to create recycled media for use in the media blasting chamber.

A re-circulatory blasting device obtained is capable of performing stable treatment for a prolonged period of time even in cases in which an elastic abrasive employed has abrasive grains adhered to the surface of elastic cores. An elastic abrasive regeneration device provided to the blasting device regenerates elastic abrasive employed for re-circulation. The elastic abrasive regeneration device includes a mixer and a combining unit. Recovered abrasive fed in from an abrasive recovery section is mixed in the mixer with abrasive grains fed in from an abrasive grain feeder, and the abrasive grains are adhered to the surface of the cores of the recovered abrasive. In the combining unit, the abrasive grains are pressed against and combined to the surface of the cores by passing an aggregated state of the recovered abrasive mixed by the mixer along a constricted flow path having a flow path cross-sectional area that gradually narrows.

The invention provides a method for producing a synthetic quartz glass substrate, the method includes arranging spacers to be in contact with outer peripheral side surfaces of a synthetic quartz glass substrate, arranging plate materials to be in contact with the outer peripheral side surfaces of the spacers in a state that the plates are protruded from the surface of the substrate, and sandblasting the surface of the substrate.

The invention provides a method for producing a synthetic quartz glass substrate, the method includes arranging spacers to be in contact with outer peripheral side surfaces of a synthetic quartz glass substrate, arranging plate materials to be in contact with the outer peripheral side surfaces of the spacers in a state that the plates are protruded from the surface of the substrate, and sandblasting the surface of the substrate.

A method for manufacturing a structure on a surface of a workpiece (1) is disclosed, the method having the following steps: applying a liquid base layer (2) onto the surface of the workpiece (1); spraying on at least one droplet (3) into the not yet congealed base layer (2), wherein the at least one droplet (3) at least partially, preferably completely, penetrates into the base layer (2); fixing the base layer (2); and at least partially removing the at least one droplet (3).

Further, a second method having the following steps is disclosed: spraying on at least one droplet (3) onto the surface of the workpiece (1); applying a liquid base layer (2) onto the surface of the workpiece (1), wherein the base layer (2) flows around the at least one droplet (3) and preferably at least partially covers the at least one droplet (3); fixing the base layer (2); at least partially removing the at least one droplet (3).

Finally, a device for performing the methods is disclosed.

A sand blaster is provided that includes an engine carried by an engine mounting plate. A frame is included and an engine support isolator engages the frame and carries the engine mounting plate. The engine support isolator has a stud that extends through a first coil and a stud guide that has a tapered inner surface. The stud extends through the stud guide. In other arrangements an air regulator that is adjustable is provided, and a nozzle that features reduced wear is provided.

A sand blaster is provided that includes an engine carried by an engine mounting plate. A frame is included and an engine support isolator engages the frame and carries the engine mounting plate. The engine support isolator has a stud that extends through a first coil and a stud guide that has a tapered inner surface. The stud extends through the stud guide. In other arrangements an air regulator that is adjustable is provided, and a nozzle that features reduced wear is provided.

A management device simultaneously clamps both the power cord and the vacuum tube of a floor preparation machine to appropriately direct the power cord and vacuum tube and protect from damage the power cord, vacuum tube cord plug and machine socket associated with the power cord and fitting associated with the vacuum tube.