Abstract: An electric power tool dust collection system includes: a hammer drill, to which a dust suction bit is mounted; a dust collection device mounted to the hammer drill and including a suction portion (introduction port), a dust collection motor, a dust collection fan rotated by drive of the dust collection motor to generate a sucking force in the introduction port, and a dust collection portion (dust box) that stores powder dust suctioned from the introduction port; and exhaust flow paths (exhaust flow path and tubular flow path) respectively formed in the hammer drill and the dust collection device to lead exhaust that has passed through the dust box to a high-temperature portion (output portion) of the hammer drill.

Abstract: A grinding liquid trough arrangement for a grinding machine having a grindstone, wherein said grinding liquid trough arrangement comprises: a trough for grinding liquid formed by a trough wall, wherein the trough is configured to be arranged at a grinding machine having a grindstone such that the trough encloses a portion of a grindstone, wherein, the trough wall comprises at least one metal element which is attractable to magnets, and that, the grinding liquid trough arrangement comprises at least one magnetic element which is configured to be detachable attached to an external side of the trough wall by means of magnetic attraction between the magnetic element and the metal element.

Abstract: Aspects for dust collection are disclosed. In one aspect, an apparatus is disclosed, which includes a lightweight portable housing such that a vacuum source, a filter component, and a dust containment component are housed within the lightweight portable housing. The apparatus further includes an input component configured as a conduit between the lightweight portable housing and a dust transition area corresponding to an area between a dust loading component and a dust receiving component. The vacuum source is configured to apply a negative pressure to the dust transition area by creating an air flow from the dust transition area to the lightweight portable housing via the input component, whereas the dust containment component is configured to collect airborne dust removed from the dust transition area and filtered by the filter component. Similar apparatuses are also disclosed to facilitate dust removal from a silo, as well as from a mixer.

Abstract: A portable booth assembly for receiving a work piece to facilitate working on a work area of the work piece including a housing and an inner core disposed within an interior area of the housing is provided. The portable booth assembly includes an aperture that is formed in the housing and the inner core. The aperture is configured to receive the work piece. The inner core defining the aperture is configured to be supported by the work piece if the work piece is large, or support the work piece if the work piece is small, and isolate the work area within the portable booth assembly. The portable booth assembly further includes a cut out formed in the housing. The cut out is configured to enable access to the work area for working on the work area.

Abstract: A portable cutting device having a cutting tool for cutting a material. The cutting device includes a motor driving the cutting tool and a shroud at least partially enclosing the cutting tool. The shroud defines a debris accumulation chamber for gathering debris created by the cutting tool cutting the material. An impeller is operatively coupled to the motor and driven by the motor to create suction pressure to draw the debris out of the debris accumulation chamber and into a collection bag.

Abstract: A power tool is provided including a having a field case portion and a gear case portion, a motor disposed in the field case portion of the housing, a fan rotatably connected to the motor, intake conduits disposed along the housing, and a particle separation assembly in fluid communication with the intake conduits. The particle separation assembly includes a baffle and a centrifugal chamber, where the baffle is operable to direct airflow from the intake conduits into the centrifugal chamber in a cyclonic path, and the centrifugal chamber includes a radial gap forming a particle dispersion port in the cyclonic path of the airflow to eject contamination from the airflow. Additionally or alternatively, the centrifugal chamber includes air-directing fins arranged angularly to direct contamination from the airflow towards the particle dispersion port.

Abstract: An object of the invention is to provide a hooded simple suction tray for dental extraoral operations which can be hooked to an upper surface of a table and which enables not only suction of solids and foul-smelling gases resulting from operations but also suction of used liquids during extraoral operations using liquids. The hooded simple suction tray includes: a tray main body with a bottom plate partly serving as a base hooking and mounting portion with a flat lower surface; a communication pipe attached to a portion of the bottom plate other than the base hooking and mounting portion and allowing the tray main body to communicate with a suction hose of a dental suction apparatus; and a fly prevention hood erected at an upper edge of a peripheral side plate of the tray main body to prevent flying substances resulting from an extraoral operation from flying around.

Abstract: Disclosed are improvements to a high speed power buffer assembly provided with a dust evacuation system. The assembly includes a hood depending from the chassis to encircle the high speed rotating buffer pad, a peripheral skirt depended from the chassis, a dust collection aperture adjacent the buffer penetrating the hood for the outlet of dust to the exterior of the hood, a curved dust collector chute, aligned and in communication with the dust collection aperture, and a dust collection bag, communicated with the dust collector output. The skirt has inclined grooves to co-act with the buffer pad to entrain air from the outside of the skirt to the inside. Given the arrangement of the foregoing features, the dust evacuation system can operate without the use of a vacuum pump.

Abstract: A jet receiving receptacle is provided which is coupleable to a high pressure fluid jet system opposite a nozzle thereof to receive a fluid jet discharged from the nozzle after it acts on a workpiece. The jet receiving receptacle may include an inlet feed component having a tapered inlet that defines a jet receiving surface about a central axis to receive the fluid jet and direct the fluid jet downstream and toward the central axis. The jet receiving receptacle may further include a drive mechanism adapted to rotate the inlet feed component about the central axis such that impact of the fluid jet with the inlet feed component is distributed around the jet receiving surface. The drive mechanism may rotate the inlet feed component continuously or intermittently. Fluid jet cutting systems incorporating a jet receiving receptacle and related methods are also provided.

Abstract: A dust collection hood installed on a grinding machine tool which includes a driving motor and at least one grinding portion driven by the driving motor to rotate. The dust collection hood includes a circumferential wall surrounding the grinding portion and a dust collection cap. The dust collection cap is coupled with the circumferential wall to form a dust collection chamber to house the grinding portion, and includes a top fastened to the grinding machine tool. The dust collection chamber is formed at a height gradually decreased from the top towards the circumferential wall. The dust collection cap further includes a dust discharge port communicating with the dust collection chamber and an airflow guiding portion to guide airflow from the dust collection chamber to the dust discharge port. Thus a great amount of dust generated during grinding can be discharged via the dust discharge port.

Abstract: A dust collection device for a sanding tool includes a bag having a sidewall with an inner surface and a coupler attached to the bag. The sidewall comprises at least one filter layer and an outer support layer. A sleeve having an outer surface, a sleeve sidewall, a first end, a second end, and at least one gap at either the first end or the second end is positioned within the bag. The sleeve's first end is positioned adjacent the coupler to direct incoming air towards the sleeve and the sleeve is positioned within the bag such that a bypass volume is present between the outer surface and the inner surface.

Abstract: A universal dust shroud includes a unitary mounting bracket on top of the shroud body. The bracket includes a plurality of collar sections attached to the body via a ‘Z’ shaped joint which allows the collar sections to move radially inwardly and outwardly relative to each other to accommodate different angle grinders. The bracket may include slots formed at the base of the bracket. The slots allow air to flow in through the slots, out past the grinding disk, and to the vacuum port. As such, the slots can aid in cooling the grinder output and bearings, and helps keep dust and debris away from the bearings in order to extend the life of the grinder.

Abstract: The present invention provides a means to increase the efficacy of the sanding of surfaces of contoured or other complex geometries as often found in automotive panels undergoing collision repair. In particular, the present invention provides a means to achieve a flat, convex, or concave sanding surface as required by the site of the work and as adjusted by the operator. Additionally, dust removal facility means are provided for the adjustable profile sander allowing the operator to reduce the release of fine particulates in the immediate work environment. The application of the present invention reduces the occurrence of secondary damage arising from the action of sanding through its surface contour adaptability while also reducing the number of sanding passes required to achieve the level of smoothness desired. Further, the safety of the operator is enhanced through the removal of potentially harmful particulates at the site of the work as generated during the operation of sanding.

Abstract: A dust collection assembly for a manual sander, having a bag with an open upper end and a lower end terminating in an aperture, and a rigid frame supporting the open upper end of the bag. The rigid frame includes a periphery to which the open upper end of the bag is attached, and a pair of opposing engagement portions extending from the periphery towards a center of the open upper end of the bag. The manual sander includes a sanding element and a pole rotatably mounted thereto. The pole extends through the bag's aperture, and each of the engagement portions is removably connected to mounting bolts on the sanding element such that the sanding element is rigidly held at the open upper end of the bag so that the bag collects dust and debris created by the sanding element during use.

Abstract: A portable power tool includes a motor located in a motor housing of the tool and having a rotary output shaft, a working part arranged to be driven by the rotary output shaft, a dust collection container arranged to collect dust produced by the operation of the power tool on a workpiece during use, and a fan. The fan is arranged to be rotated about an axis by the motor to convey the dust to the dust collection container, the axis of rotation of the fan being non-coaxial with the rotary output shaft of the motor. A part of an exterior surface of the dust collection container is formed as a recess into which the motor housing at least partly extends, such that the dust collection container extends at least partly around the motor housing.

Abstract: A machine tool comprises a dust collection receptacle that is releasably connected to the machine tool. A blow-off neck is arranged on a housing part, and a receptacle neck is arranged on the dust collection receptacle. The two necks can be axially plugged into each other. In the plugged state, supporting surfaces on the dust collection receptacle and on the housing part rest against each other in a planar manner, said supporting surfaces extending at an angle from the longitudinal axis of the plugged necks. The face of one neck forms a first supporting surface.

Abstract: An improved grinder/polisher includes a base having a bowl, a rotating drive plate and a drive plate drive that is adapted to support a platen. The grinder/polisher includes a head configured to support a specimen holder. The head has a first drive for rotational drive of the specimen holder and a second drive for moving the specimen holder toward and away from the drive plate. The head includes a load cell operably connected to the first drive and a counter operably connected to the second drive. The counter is configured to determine movement and the extent of movement of the head toward and away from the drive plate. The grinder/polisher includes a control panel mounted within a housing and including a microprocessor controlled control system having a touch panel or screen.

Abstract: A system for a hand-held power tool has a tool housing, a receiving unit fixed to the tool housing and a guard unit connected with the hand-held power tool. The guard unit includes a guard extending at least partially around a rotatable tool. A guard anti-rotation lock device includes a clamping band fixedly connected to the guard that establishes a frictional connection between the guard unit and the receiving unit. The receiving unit includes a receiving flange and a connecting element that are together surrounded by and clamped in a clamping region by the clamping band to effect the frictional connection. In a case where the rotatable tool bursts into pieces during operation, the connecting element counteracts rotational movement of the guard unit with respect to the receiving unit by changing a cross-sectional shape of the clamping region.

Abstract: The invention relates to a system for angle grinders or any kind of stable or power hand tool cutting and grinding machines which produce or scatter filings. This system including a guard and/or an absorbing device can use of any kind of permanent and/or non-permanent electric and/or magnetic fields to absorb, collect and storage the filings scattered, suspended and produced by the machines and won't let them to damage and hurt the user's eyes and/or body and/or cloth and prevent scattering filings in the air and environment. In addition it provides the possibility for re-using of filings in any and different applications and also the possibility of using any kind of cutting and grinding machines inside non-workshops, dangerous and flammable places like houses, accident scenes and so on.

Abstract: A polishing apparatus includes at least one dustproof housing, at least one polishing wheel, and at least one exhaust tube. Each dustproof housing includes a back wall, a plurality of sidewalls extending from the periphery of the back wall, and a front wall opposite to the back wall. The front wall of the dustproof housing defines a working opening and an exhaust opening positioned below the working opening. Each polishing wheel is received in the working opening. Each dust collector is received in one dustproof housing below the polishing wheel, and exposed to the outside via the exhaust opening. Each exhaust tube is fixed to the back wall of the dustproof housing and communicating with the interior of the dustproof housing.

Abstract: The invention relates to a protective hood securing device for a portable power tool (12), especially an angle grinder. Said protective hood securing device comprises a protective hood unit (14), having a protective hood (16), and a securing unit (18) having at least one securing element (20) which is provided together with the protective hood unit (14) for protection in the event of a tool (22) breakage. For this purpose, the securing element (20) is at least partially configured by a protective cover (24) that is provided in addition to the protective hood (16).

Abstract: A dust collection hood installed on a grinding machine tool which includes a driving motor and at least one grinding portion driven by the driving motor to rotate. The dust collection hood includes a circumferential wall surrounding the grinding portion and a dust collection cap. The dust collection cap is coupled with the circumferential wall to form a dust collection chamber to house the grinding portion, and includes a top fastened to the grinding machine tool. The dust collection chamber is formed at a height gradually decreased from the top towards the circumferential wall. The dust collection cap further includes a dust discharge port communicating with the dust collection chamber and an airflow guiding portion to guide airflow from the dust collection chamber to the dust discharge port. Thus a great amount of dust generated during grinding can be discharged via the dust discharge port.

Abstract: A dust extraction device for a machine hand tool is provided. The dust extraction device includes an outer tube arranged about an axis, the outer tube being closed on the first axial end thereof by a wall. An opening is provided for a pump connection, the opening being arranged in a position neighboring the wall in a shell wall of the outer tube. An attachment feature is provided having a sheath-like shape and arranged on the side of the wall which lies opposite the outer tube in an axial extension of the outer tube. An inner tube is arranged inside the outer tube about the axis, and penetrates the wall. A length of the inner tube inside the outer tube is at least half of the length of the outer tube.

Abstract: Dust collection for an abrasive tool is disclosed. In one embodiment, a first dust extraction component extracts dust from an upper part of material that is machined, while a second dust extraction component extracts dust from a lower part of the material by the abrasive tool. The first dust extraction component and the second dust extraction component collect about 100% of dust generated from the material.

Abstract: A coarse separator (10) for a power tool (2) is used for separating, at least partially, from an air flow (L), material particles (M) produced during operation of the power tool (2) and aspirated by a suction device (8), and includes an inlet opening (48) connectable with the suction head (6) of a suction device (8) that aspirates the particles, an outlet opening (40) for letting a purified air flow (L) out, and a lamella separator arranged between the inlet opening (48) and the outlet opening (40).

Abstract: An apparatus for collecting weld tip chips created by a weld tip dresser is provided that “catches” the chips at the cutting tool and collects them in a container, preventing their disbursement on the factory floor. The apparatus includes a body adapted for connection to the weld tip dresser and with an opening therethrough configured to permit the weld tip dresser therethrough. The body defines an air inlet passage extending from an outer surface of the body to the opening. The body defines an air outlet passage from the opening to the outer surface. A pressurized air supply is connected to the body at the air inlet passage and is configured to blow air through the air inlet passage to blow chips from the opening through the air outlet passage. A container is operatively connected to the body at the air outlet passage for collecting chips blown from the opening.

Abstract: A wet cutting saw comprising: a blade rotatable about an axis; a liquid feed conduit for feeding liquid onto a surface of the blade as it rotates; a hood comprising a top wall located above the blade and a side wall located to one side of the blade and connected to the top wall; the wet cutting saw also comprising at least one collector for collecting liquid which leaves the blade surface as it rotates, each collector located at the side wall of the hood and arranged to recycle the collected liquid to the blade surface.

Abstract: In a power tool in which a disc-shaped tool is attached to a spindle that protrudes from a housing, a dust-collecting cover provided on the housing for covering the disc-shaped tool has a tool insertion opening. A rotation stopping tool that stops rotation of the spindle can be inserted into the dust-collecting cover through the tool inserting opening. The duct-collecting cover is provided with a rubber ring that blocks the tool insertion opening such that the opening can be opened and closed as desired.

Abstract: A dust collection cover may be made from resin for achieving a reduction in its typical weight. In such a configuration, a disk-shaped grinding stone for grinding a steel material is preferably not attachable due to interference of an attachment-restricting portion. It is preferred that only a cup-shaped diamond wheel for work that generally does not produce heated iron powder or the like is attachable.

Abstract: To a power tool main body to which a main body spindle rotationally driving a tip tool is provided, a dust collection adapter for collecting dusts generated when a material to be ground is processed by the tip tool is held thereto. The dust collection adapter includes: a dust collection fan rotationally driven by the main body spindle; and a dust collection cover for containing the dust collection fan and covering a diametrical outside of the tip tool. The dust collection fan includes: a fan main body to which a plurality of blade portions are provided; and a threaded shaft portion provided to a center portion of the fan main body. To the threaded shaft portion, a female thread portion thread-coupled to the main body spindle and a male thread portion thread-coupled to a fastening thread member for fixing the tip tool are provided.

Abstract: A dust box includes: an attachment portion configured to be attached to a dust-discharging nozzle extending from a housing of an electric tool; and a dust-collecting portion connected to the attachment portion and configured to store dust particles to be discharged from the nozzle. The dust-collecting portion mainly consists of a box which is made of synthetic resin and configured to be detachably connected to the attachment portion, and a paper bag received in the box and configured to store the dust particles to be discharged from the nozzle.

Abstract: A universal dust shroud includes mounting brackets held above the shroud body by springs. The brackets move radially and vertically relative to the body to accommodate different angle grinders, and allow vertical movement of the shroud body relative to the grinding disk while using the grinder to allow the user greater control over the angle grinder.

Abstract: An enclosure apparatus for containing dust and debris such as may be generated while repairing a drywall surface. The enclosure apparatus includes a flexible, transparent body and may include a sealable slit, glove and pouch. The method of use allows the enclosure apparatus to be securely affixed to the drywall surface with a pressure sensitive adhesive. Tools or otherwise can be placed within the enclosure body prior to attachment to the drywall surface. Once the dust generating work is completed the enclosure apparatus can be removed, cleaned and properly disposed.

Abstract: The disk-shaped substrate manufacturing method is provided with: generating an air stream downward from an upper area during grinding a disk-shaped substrate in a grinding apparatus; arranging the grinding apparatus on an upper floor face of a floor and arranging water on a lower floor face of the floor, the upper floor face being made of a board having penetration holes or a mesh member, and the lower floor face supporting the upper floor face so as to be located above the lower floor face with a distance; and guiding dust made by the grinding apparatus to the water by use of the air stream.

Abstract: A vacuum shroud for an angle grinder includes a removable hatch for grinding in a corner and provides a storage location on the shroud for the hatch in order to encourage use of the hatch when not grinding in a corner.

Abstract: A dust box includes: an attachment portion configured to be attached to a dust-discharging nozzle extending from a housing of an electric tool; and a dust-collecting portion connected to the attachment portion and configured to store dust particles to be discharged from the nozzle.

Abstract: A dust collecting device for a handheld power tool equipped with a dust exhaust fitting (12), in particular for an electric handheld power sander, includes a dust collecting bag (14) that has an air-permeable filter bag (15) and a reinforcing plate (16). The reinforcing plate (16) is situated in front of the filter bag (15) and has an inlet opening (17) that fits onto the dust exhaust fitting (12). A support is attached to the handheld power tool and has a filter chamber (20) for insertion of the filter bag (15) and a receiving chamber (21) situated in front of the filter chamber (20) for insertion of the reinforcing plate (16).

Abstract: A dust box includes: an attachment portion configured to be attached to a dust-discharging nozzle extending from a housing of an electric tool; and a dust-collecting portion connected to the attachment portion and configured to store dust particles to be discharged from the nozzle. The dust-collecting portion mainly consists of a box which is made of synthetic resin and configured to be detachably connected to the attachment portion, and a paper bag received in the box and configured to store the dust particles to be discharged from the nozzle.

Abstract: An object of the present invention is to provide a dust collecting cover for a grinding cup wheel having both excellent practicality and versatility. A base plate is joined to a body of the dust collecting cover via elastic bodies at a plurality of positions, an adapter for joining an angle grinder is attachably/detachably provided on the base plate, and a portion of the body cover is formed as a sub-cover openable/closable utilizing a magnetic force of a magnet, and the sub-cover is configured to be fastenable to the body cover by a screw inserted via a through hole provided in the magnet into a female screw part provided on the body cover side.

Abstract: A ceiling grinder comprising a drive unit, a grinding wheel, which can be set in rotation by means of the drive unit, a grinding head housing, which receives the grinding wheel and has an opening allowing the grinding wheel access to the surface to be ground and a holding element for holding the grinder. The ceiling grinder also has means for producing a negative pressure within the grinding head housing, by which the ceiling grinder is held on the surface to be ground, wherein the means for producing the negative pressure comprise lamellar elements, which rotate about the axis of the grinding wheel during the grinding operation of the ceiling grinder and thereby cause within the grinding head housing an air flow that induces a static negative pressure.

Abstract: The sharpener includes a generally conical body, a base upon which the body is mounted and a hollow head mounted over the body. A shaft extends beyond the body and into the head. A cutting disk with an abrasive surface is situated within the head and fixed to the shaft. A motor situated within the body is provided for rotating the shaft. The head has an opening though which tweezers may be received such that the tweezers may be sharpened by the rotation of the cutting disk. The debris created by the sharpening process is captured within the head. The motor is energized by connection with an electrical source through series connected pushbutton switches. The switches are located remotely, preferably on opposite sides of the body, to reduce the chance of accidental energization of the motor.

Abstract: The invention relates to a dust collection container for a hand-held power tool, especially an electric sander, having a dust extraction connection (12). Said dust collection container has an inlet connection (17) configured to be slid onto the dust extraction connection (12) and a seal (18) that is effective between the inlet connection (17) and the dust extraction connection (12), the peripheral surface (182) of said seal sealingly fitting against the inner wall (172) of the inlet connection (17). In order to facilitate an easy and jerk-free handling of the dust collection box during attachment to the hand-held power tool and during detachment of the hand-held power tool, the seal (18) has a sealing surface (181) which is oriented at a right angle to the connection axis and which is configured to sealingly fit against the free, annular face (121) of the dust extraction connection (12).

Abstract: The invention is based on a dust container of a portable power tool for receiving machining residues of a portable power tool (2), comprising a container (8) predetermining a receiving volume (14). It is proposed that the container (8) have a variation means (12) for varying the size of the receiving volume (14).

Abstract: A hand-held machine tool has an electric drive motor (3), arranged in a housing (2), for driving a tool (5), wherein a dust collecting container (7) is connected to the housing and has in its wall a container connector (8), which can be pushed axially onto a blow-out connector (6) in the housing. When the connection is disconnected, the wall (11) of the dust collecting container and an assigned wall (15) on the housing are in contact by way of at least one common supporting point, wherein the supporting point is displaced in the axial direction when the dust collecting container rotates about a longitudinal axis (9) of the container connector.

Abstract: The invention relates to an orbital apparatus (20) for machining of a revolution metallic wall, of the type comprising a fixed annular plate (30) coaxially mounted on a universal support and having a peripheral annular electric collector (35) and an annular plate (50) rotationally mobile and coaxially mounted on the fixed annular plate (30). The mobile annular plate (50) carries a set of electrical contacts (55) cooperating with the electrical collector (35), means (60) for rotationally driving the plate (50), means (70) for machining the metallic wall and pneumatic feeder means (80) to apply and maintain the machining means (70) on the metallic wall.

Abstract: The tile saw of the present invention has a frame with a first guide rail and a second guide rail, a water tray coupled to the frame and a table for supporting a work-piece to be cut supported by at least one of the first and second guide rails. The tile saw also has a supporting arm mounted on the frame and a cutting machine supported by the supporting arm. In the present invention, one of the first or second guide rails is located outside of the water tank and the tile saw has a rail protective device for protecting the guide rail from damage. As a result, the tile saw of the present invention protects the guide rail from both dirty water and dust produced during the cutting process.

Abstract: A dust collection device for a sanding tool includes a bag having a sidewall with an inner surface and a coupler attacked to the bag. The sidewall comprises at least one filter layer and an outer support layer. A sleeve having an outer surface, a sleeve sidewall, a first end, a second end, and at least one gap at either the first end or the second end is positioned within the bag. The sleeve's first end is positioned adjacent the coupler to direct incoming air towards the sleeve and the sleeve is positioned within the bag such that a bypass volume is present between the outer surface and the inner surface.

Abstract: A manually guided implement having a tool driven by an internal combustion engine, which draws combustion air in via an air filter disposed on an air filter base. The air filter is secured to the implement via a releasable securement device that includes a first securement element, and a second securement element that cooperates with the first securement element. The securement elements can be released from one another, or connected to one another, by means of a rotational movement about an axis of rotation. To achieve easy handling of the air filter, the first securement element is fixedly connected to the air filter.

Abstract: Dust collection for an abrasive tool is disclosed. In one embodiment, a first dust extraction component extracts dust from an upper part of material that is machined, while a second dust extraction component extracts dust from a lower part of the material by the abrasive tool. The first dust extraction component and the second dust extraction component collect about 100% of dust generated from the material.

Abstract: A chemical mechanical polishing apparatus includes a container, a platen, first and second brushes, a polishing pad, a carrier, and a slurry supplier. The container has a bottom wall and a side wall. The side wall has an inwardly-extending upper portion. The platen is supported over the bottom wall. The platen is positioned lower than the inwardly-extending upper portion. The first brush brushes the side wall. The first brush is fixed to a side surface of the platen. The second brush brushes a side surface of the platen. The second brush is fixed to the bottom wall. The polishing pad is attached to the platen. The carrier presses a workpiece to be polished against the polishing pad. The slurry supplier supplies a slurry onto the polishing pad.