Deburring, polishing, surface finishing tumbling medias

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Deburring Polishing Media and compounds

• www.metallurgyproducts.com
• 919810868858

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Deburring Polishing Media and compounds

• Polishing Medias are used for -
• Cutting  Media which can cut, remove burrs and
  can smooth surfaces. Deburring media refers to
  materials that enable burr removal while not
  harming the other parts of the material or parts
  surface.
• Luster  designed to promote luster on the
  surface of metal parts.
• Part separation  To separate parts during the
  de-burring, cutting, surface improving or
  burnishing operations
• Surface scrubbing  Media have the unique ability
  to scrub surfaces and physically assist compounds
  in their cleaning function
• Widely used Polishing media are
• Aluminum media  Aluminum media are typically
  cast parts and are available in a wide variety of
  shapes and sizes. Aluminum scrubs parts and can
  work in conjunction with cleaning compounds to
  clean parts
• Preformed Ceramic  manufactured by mixing clay
  materials and water with abrasives, forming the
  mud into shapes, drying the shapes, and firing
  them at high temperatures to vitrify the binder
• Preformed resin- bonded media Plastic or
  resin-bonded media utilize a wider range of
  abrasive types and sizes than preformed ceramics.
  The most popular grades are those using Aluminum
  oxide, silicon carbide and other abrasives.
• Steel Case hardened, Available in a variety of
  sizes and configurations. Balls, balls with flat
  spots, diagonally cut wire similar to angle-cut
  cylinders, ball cones and cones and pins are the
  most commonly used and are being more widely used
  for light de-burring applications and cleaning.
  Compounds are available to keep steel burnishing
  media clean and bright for extended periods.
• Synthetic random shaped media Most popular
  synthetic random media is fused aluminum oxide,
  which is available in a number of grades. The
  more loosely bound, coarse-grained materials are
  characterized by fast cut and high depreciation
  rates.
• Natural Random-shaped Media  Granite, quartz,
  limestone, emery and other naturally occurring
  abrasive materials are also used in vibratory,
  tumble finishing applications
• Cob Meal, walnut-shell flour  These are used for
  drying applications because of the natural
  ability of these materials to absorb water from
  metal surfaces. These can also be blended with
  abrasives and used for fine-polishing
  applications in vibratory, barrel, or spindle
  finishing equipment.

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Ceramic deburring and polishing media for surface
finishing

• made by mixing clay and other vitreous material
  with different abrasives, used for all types of
  metals and gives various finishing from light cut
  to aggressive deburring and cutting depending on
  the grade of abrasive, Ceramic Deburring and
  Polishing Tumbling Media is recommended for
  general purpose polishing, light and heavy
  deburring of ferrous and nonferrous metal surface
  made of lost wax casting, forging or sand
  casting.This media use leads to extra fast
  deburring and ultra-aggressive metal removal from
  the surface. Ceramic media is best for heavy
  cutting and hard metals. When a small media is
  required (under 3/4"), ceramics offer the best
  selection. Ceramic media supports very heavy
  parts better than plastic media due to its
  hardness and abrasive properties.Advantages of
  Ceramic Tumbling Media are its Durability,
  inexpensiveness and highly versatile, ceramic
  finishing media is the most common media used in
  mass finishing. It is manufactured in a wide
  variety of precise shapes which assists in
  separation and elimination of lodging
  problems.Ceramic Deburring, polishing and
  finishing media is made of silica and other
  minerals and abrasives that are combined, formed
  and fired at a high temperature producing a very
  hard cement-like product. Most ceramic preformed
  shapes such as triangles, stars and ellipses are
  extruded and cut to the desired length. The
  density of ceramic preformed shapes is usually
  determined by the amount of abrasive incorporated
  into the mix prior to firing the more abrasive
  the higher is the density and darker the color of
  the media. This is important because the higher
  the density the more aggressive the media will
  be (faster cutting and rougher surface) and the
  quicker it will wear. Therefore, dense media is
  only practical where the objectives cannot be
  achieved by any other way or where the reduction
  in cycle time brings a greater value than the
  extra cost in media consumption.The type and
  quantity of abrasive grain can be varied to
  accomplish particular tasks, depending on the
  bond material selected and used in manufacturing
  of the media, It can be supplied in small or
  large quantities such as Tumbling stones, ceramic
  chips, deburring media, polishing balls are all
  synonyms for ceramic tumbling media available in
  many sizes, shapes and formulations for immediate
  delivery. High density ceramic media is also
  available as per the product deburring and
  polishing requirements.Preformed Ceramic
  manufactured by mixing clay materials and water
  with abrasives, forming the mud into shapes,
  drying the shapes, and firing them at high
  temperatures to vitrify the binder.

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Ceramic deburring and polishing media for surface
finishing
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Corncob Polishing and Drying Media for surface
finishing

• This media is used mainly for drying
  applications, polishing, shinning because of the
  natural ability of these materials to absorb
  water and oil from metal surface and is also very
  effective in removing the tarnish from brass
  castings. It being environment friendly has long
  life and is reusable. Both treated with polishing
  paste and untreated corn bob media is available
  whereas in treated media comes with polishing
  compound already mixed or blended with abrasives
  and used for fine-polishing applications in
  vibratory, barrel or spindle finishing equipment
  and getting treated media is best option to avoid
  worrying about the polish mix quantity to be
  added for a particular job of polishing. our
  unique  processing provides the most accurately
  sized, screened and air-washed grit in the
  industry with strict management of the quality
  control to ensure product consistency and
  customer satisfaction with customized production,
  bagging and blending.
• The hardest part of the corncob is useful for
  abrasive applications with grinding and polishing
  paste whereas the pith and chaff are the most
  absorbent parts of the corncob for drying water
  and oil on the product surfaces.
• Different cob grit sizes are available as per the
  customer requirements, whereas the larger grain
  size media has negative effects compared to
  smaller or finer media size for tumbling and
  vibrating, in the vibrator the corncob media
  cleans better as it is constantly being shaken
  and the quantity of the media in vibrator is also
  a major experience so that the contact of media
  with the product to be polished is most and
  pieces dont strike with each other, generally
  the tumbler capacity is divided by six parts in
  which 4 parts of media is used and 1 part of the
  product to be polished and 1 part is free for
  movement of the media to avoid scratching of the
  castings by volume. Life of corncob media depends
  proportionately to the time span of use as with
  the dirt, oil or tarnish the polishing process
  slows over a time, when the required finishing is
  not acceptable the media should be changed and
  recharged with the polishing compound or paste we
  should charge or treat the media first with the
  compound and then use the same for polishing and
  shinning processes

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Corncob Polishing and Drying Media for surface
finishing
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Glass Beads polishing and deburring media

• Glass beads high polishing media, these are
  silica and lead free used as abrasive media for
  deburring, cleaning, polishing and blasting.
  Mainly used on metal, glass, plastic and rubber
  surfaces for a uniform and smooth shinning with
  bright finishing.

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High density Polishing and shinning Media for
surface finishing

• High density Polishing and shinning Media are
   zirconium oxide ceramic micro beads, zirconium
  silicate ceramic micro beads, Zirconia Toughened
  Alumina Beads and 92- 99 plus Purity High
  Alumina Ceramic balls,  formed by using ultrafine
  powder as a raw material and then densified by
  high-temperature sintering between 1400-1600
  degrees,  it is a High density polishing and
  shinning media combined with the shining
  compounds and are suitable for each type of
  metal, has  remarkable advantage to eliminate the
  problem of oxidation that usually involves in the
  traditional stainless steel balls,  with this
  product there is no transfer or oxidization of
   metal during the process, therefore no more acid
  degreasing and there is a minor discharge of
  water. The remarkable hardness and the low
  specific gravity permits to obtain a very fine
  finish without the orange peel phenomenon that
  frequently involves the traditional treatments
  with stainless steel balls. Another important
  characteristic of this material is that it allows
  the processing of very thin and fragile objects
  (i.e. in the gold industry), assuring with one
  single step smoothing and shining without
  modifying the color and the natural
  characteristics of the metal, this high density
  polishing media is free from pin holes, cracks
  and has  dense homogeneous internal micro
  structure which leads to satin smooth surface
  finish,The media is extremely gentle to
  expensive polishing parts as wear of polishing
  parts is extremely low or negligible and reduces
  abrasion resulting in lasting life which is
  approximately 300-350 times longer than glass
  beads, it has higher density as compared to any
  other ceramic micro milling and polishing beads
  so can generate considerable heat during
  polishing process and which may affect physical
  properties of ingredients being polished hence it
  is  recommended to provide suitable cooling or
  polishing solvent to the polishing tumbler also
  Smaller the media size larger the number of
  contact points resulting in reduced polishing
  time, enhanced productivity and intensity of the
  shinning ideally suited for shot peening
  treatment on metal surfaces, metal polishing,
  contact eye lenses polishing and a host of many
  other applications. It is highly resistant to
  chemicals, most acids, Corrosive liquid, most
  solvents 

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High density Polishing and shinning Media for
surface finishing
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Plastic Deburring Polishing and smoothing Media
for surface finishing

• Plastic Deburring Polishing and smoothing
  tumbling media is a preformed resin-bonded
  abrasive media, more commonly recognized as
  plastic media is utilized in a wider range of
  abrasive types and sizes than preformed ceramics.
  The most popular grades are those using quartz as
  an abrasive. Aluminum oxide, silicon carbide
  along with other abrasives. Usually, low-cost
  polyester resins are employed as the binder and
  the various shapes are produced by casting the
  resin bonded media in different grades and sizes
  which is good for all metal surfaces deburring
  and polishing.
• This Deburring and polishing media is a
  petroleum-based plastic media used for low micro
  finishing and where the polishing must be free of
  impingement damage in nonferrous metals and other
  soft materials, a blend of urea formaldehyde
  resin and abrasive material of aluminum or
  silicon carbide is added in plastic deburring
  media and has lower specific gravity making it
  useful for delicate items, Plastic media are
  softer, more flexible and therefore normally used
  exclusively on non-ferrous products.
  manufacturing process of plastic media shapes is
  the same as ceramics, plastic comes in  different
  types of bonds and many more shapes because they
  are molded rather than extruded like their
  ceramic counterparts. The two types of bonding
  materials used are polyester and urea, one good
  feature of plastic media is that it is formulated
  with colors for easy identification of
  compositions or coarseness and abrasive
  properties of the media.
• With wide range of different types of plastic
  media chips and compounds for different finishing
  requirements it is majorly used for solving
  challenging finishing, burnishing, edge breaking,
  radiussing, polishing, de-flashing and deburring
  of nonferrous metals such as silver, gold,
  aluminum and brass items and is less hard than
  the ceramic media therefore leading to less
  pressure on the parts as it works by weight and
  pressure on the parts also helps to form a
  cushion around each part in polishing machine
  avoiding collision between the parts being
  polished, has longer life as are wear resistant
  and leads to surface smoothing with minimum
  material removal from the product surface giving
  uniform finishing. Plastic polishing media use is
  a wet process in which a small amount of liquid
  compound with water is used to damp the media and
  keep the process clean with brighter surface

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Plastic Deburring Polishing and smoothing Media
for surface finishing
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Surface Polishing, Etching and Blast media

• Abrasive blasting is the general term applied to
  finishing processes in which high-pressure
  propulsion of a stream of abrasive material
  called media is shot onto the surface of a
  workpiece with or without water. This process
  serves many surface finishing purposes as
  removing contaminants, previous coatings and
  paints, waterjet cutting, powder coating,
  porcelain coating and light rust removal without
  altering the shape and for roughening the
  surface, matte finish etc.  We offer different
  types of blast media such as metallic, plastic,
  glass bead, fused alumina, walnut shell, corncob
  and ceramic media etc. that enables our customers
  to meet any application. Identifying the right
  blast media is no easy task due to the number of
  applications possible and the specificity of each
  one. This is where we suggest all our customers
  in the choice of blast media to ensure the
  desired surface finish is achieved. By choosing
  us as your preferred supplier you will benefit
  from uncompromising quality and best service
  support for production process and surface
  finishing. Our blast media meets with many
  specific product approvals required for the
  aerospace, automotive and military sectors giving
  you ultimate confidence in our products and
  processes.
• Few of the most appropriate material for your
  specific finishing requirement are as following
• Steel Shot and steel Grit   steel media is among
  the cost effective alternative to other abrasives
  media, it is very tough and recyclable, used on
  variety of surfaces to remove contamination,
  cleaning, stripping and improving metal surfaces
  and get required texture before plating, also
  used as peening media to get the surface
  hardness, here the correct shape, size and
  hardness of the media  plays a significant role.
  steel shots are round in shape resulting in
  smooth surface, peening with steel shot produces
  improved compressive strength on metal surface
  also used  for  Heat Treat Removals, Mill Scale
  Removal, Paint Removal, Sand Removal from
  Castings, Pre-Paint Adhesion, Peening etc.
• Aluminum Oxide   It is a long lasting media with
  highly sharp angular properties used for
  profiling ,etching, industrial application as a
  blast media, predesigned for abrasive pressure
  blasting of almost all types of substrate  for
  deoxidizing, Cleaning of investment castings,
  Scale removal in steam turbines, Surface
  preparation for thermal spray coatings, Rust
  removal, Hard oxide removal from titanium and
  zirconium metals, Mill scale removal, Heat treat
  scale removal, antiskid etching, Glass etching or
  frosting, Matte finishing, pickling and surface
  preparation of marble, steel, glass, granite etc.
  It has superior hardness and strength  and has an
  ability to deep etch on the metal product surface
  so used for surface polishing prior to painting
  and coating to increase the surface roughness of
  the metal part before paint and coating, helps in
  deburring and cleaning paint and lacquer
  layers, Aluminum Oxide is widely used as a tough
  recoverable media and When propelled by air it
  acts as a powerful multi-edged abrasive tool that
  will penetrate the work piece while leaving an
  exceptional clean and etched surfaces. It is used
  on metal, glass, ceramic, marble, granite and
  other stone surfaces.

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Surface Polishing, Etching and Blast media

• Glass beads  the shape of this media is
  spherical and is non porous, it is hard and has
  very low abrasiveness suitable for cleaning and
  polishing of small metal parts of soft metal.
  Media is silica free used for satin and matt
  finish with minimum stress on parts, this media
  is not as aggressive blasting media as other
  materials such as steel shot or aluminum oxide
  but is an excellent choice for applications that
  require a softer, brighter finish. Media can be
  recycled multiple times. This media generally
  gives a brighter matte finish. It maintains
  tighter work piece tolerances cleans and prepares
  the surface of metal parts without changing
  tolerances or imparting ferrous pollutants.
  Combines cleaning, finishing and peening in one
  operation. creates a wide range of unique surface
  finishes that are easy to reproduce also reduces
  the tensile stress in metal parts and increasing
  the fatigue limit.
• Crushed Glass   This media is  made from
  recycled glass very economical and mainly used
  for stripping purpose the angular nature of glass
  media allows for aggressive surface profiling and
  removal of coatings and surface contamination
  paint stripping, rust removal, etching on
   aluminum and stainless with wet blasting.
• Plastic media  Plastic blast media is soft and
  very soft in nature with various hardness and
  aggressiveness characteristics mainly used in
  automotive applications Plastic abrasive is a dry
  thermoset cleaning media made from crushed urea,
  polyester and acrylic. Each varying and available
  in a range of hardness and particle size,
  generally regarded as the best media for mold
  cleaning, blasting of plastic parts and in
  applications where the removal of the substrate
  material is not permitted such as aircraft Paint
  Removal Removes, most types of paint from typical
  aircraft parts and leaving anodized surfaces
  intact, Paint stripping from aluminum, fiberglass
  and dense hardwood hulls, It cleans brass of
  oxides and other coatings. Burr Removal Removes
  light burrs from components while maintaining
  integrity of finished parts, it is the only media
  capable of removing resin bleed without opaquing
  surface, Composite Structures Can strip paint and
  surface coatings from fiberglass, epoxy, and
  other resin rich components without bloom or
  fiber damage.
• Silicon carbide  An extremely aggressive media
  for fast cutting and high abrasion used for
  cutting stone and glass Silicon carbide is the
  hardest abrasive blasting material available
  making it the best choice for your most
  challenging surface finishing applications. Its
  primary use ranges from bonded abrasive tools,
  lapping, polishing, glass etching and general
  purpose heavy duty blast cutting applications.

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Surface Polishing, Etching and Blast media

• Walnut shell   is used for applications that
  require aggressive stripping or cleaning without
  damage or effect on the underlying substrate.
  Organic and biodegradable, Walnut Shell Grit is
  extremely durable, angular in shape but is
  considered a soft abrasive. Walnut Shell Grit
  sees utility in applications such as cleaning
  hard woods and aircraft and automotive stripping,
  this is a natural ecofriendly product derived
  after crushing the walnut shells and is harder
  than the soft abrasives, available in different
  grit sizes used for blast cleaning, de-flashing
  and polishing soft surfaces of soft metals, wood,
  plastic, fiberglass, epoxy and stone also used
  for polishing in centrifugal tumblers for
  polishing of jewelry, fiberglass, cutlery,
  plastic and resin products and for removal of
  graffiti from wood products.
• Corncob  is an organic, soft blasting grit that
  is safe for delicate parts and soft substrates.
  As the preferred blasting media for log homes and
  other wood surfaces, Removing paint from delicate
  surfaces it offers excellent cleaning and
  stripping properties without damage to the
  substrate.
• Ceramic Blasting Media  this media is very
  durable and highly efficient as blasting media
  giving smooth surface without contaminating the
  surface of the product where we achieve uniform
  surface profile with matte finish , is round in
  shape giving smooth surface. This blast media is
  recommended for stainless steel, aluminum ,
  magnesium, brass, copper and plastic products.
• Blasting Media Selection Guide  It is important
  to know the differences in blasting media, since
  different abrasive blasting media are required
  for different applications. Blasting media can be
  used for purposes such as cleaning, stripping,
  etching, strengthening and polishing. In addition
  to the media type, grit or mesh size is another
  factor to consider for your application. The
  final choice of media depends on the nature of
  the work required and on the blasting equipment
  that is employed. The blasting media selection
  guide contains a list of the common blasting
  media and the differences in blasting media,
  Things to note for correct choice of blasting
  media to achieve the desired surface finish is to
  strike a balance between price and effectiveness
  of the blasting media and different factors play
  a major role in the final polishing results.

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Surface Polishing, Etching and Blast media
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Porcelain high polishing Mediafor Surface
finishing

• Porcelain polishing Media-
• Porcelain polishing media is traditionally made
  of silicate mineral that gives it its plasticity,
  translucency, structure and hardness, it is also
  a non-porous option of ceramic media with pure
  aluminum oxide and has high durability due to
  firing at very high temperatures ranging from
  1200-1400 degrees, this media gives minimum
  abrasion depending on main composition  aluminum
  oxide in it  and is mainly used for polishing
  processes in vibrators and centrifugal disc
  polishing machines and is a great cleaner
  polisher for all types of metals, the chemical
  composition of this media makes it excellent
  choice for burnishing and polishing of plastic
  and metal components and is used mainly in the
  final step of different processes of metal
  finishing giving finer grinding and high gloss
  finish in wet polishing process with recommended
  polishing compounds.
• Generally four different structures of porcelain
  media is used in different sizes depending on the
  component geometry to be polished and unlike
  steel polishing balls it does not dent the
  surface of the product, Porcelain polishing media
  is used on soft and hard metal as it polishes the
  surface without removal of the material giving
  high polishing effect and being used mainly for
  polishing- surface improvement and bright shinny
  surface, has no abrasive wear out and has high
  life. We can suggest the best polishing and
  deburring media to be used in the vibrators and
  disc polishing machines after evaluation of the
  product to be finished or polished. Media is
  available in different sizes and shapes as per
  your requirements and we can help you to find the
  best suitable media.
• Porcelain Balls of Dia mm (1 to 10 mm)
• Ellipse mm size (8x3x8 to 20x10mm)
• Cylindrical (Pins) with and without angle
  cut (2.58 to 10x 20 mm)
• Tri-Star and triangle angle cut (22 to 66 mm)

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Porcelain high polishing Mediafor Surface
finishing
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Steel polishing, deburring and burnishing media
for surface finishing

• Stainless steel polishing media is used mainly
  for burnishing in vibratory and centrifugal
  tumblers and magnetic tumblers for surface
  finishing, Steel media is used for burnishing,
  deburring, de-flashing, pre-powder coating
  finishing, mirror and matt finishing, de-rusting
  and degreasing etc with the help of centrifugal
  and vibrator polishing machines eliminating
  manual buffing and improving the surface of the
  components, it is free of abrasive particles and
  mainly used for light deburring, lapping and
  cleaning articles
• The stainless steel media is available in
  different sizes and shapes as per requirement
  such as ball, cones, diagonal pins, cross pin,,
  sphere balls, eclipses which help in polishing
  brass, zinc, steel , gold, silver and aluminium 
  parts ranging from thin delicate wires to
  roughest industrial components enhancing shine on
  varied metal surfaces.
• Stainless steel Magnetic polishing media   steel
  pins and balls are specially made to work with
  magnets in the magnetic polishing machines with
  special chromium alloy steel avoiding rust of the
  steel media and free movement with the magnets of
  the tumbler, different thickness pins are
  available for magnetic polisher and application
  as larger size make heavier impact on soft metal
  surfaces therefor lighter pins are used for gold
  and silver products or soft metals, Most used
  magnetic polisher pin sizes vary from 3mm-10 mm
  length and diameter of 0.2 to 1.5mm depending on
  the product to be polished lower the size and
  thickness of these pins lower is the impact on
  the products, When using Stainless Steel Shot
  Pins the amount of media should be equivalent to
  the amount of parts used for tumbling. If these
  amounts are incorrect, it can affect the final
  finishing process of products and result in
  non-satisfactory results

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Steel polishing, deburring and burnishing media
for surface finishing
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Walnut Shell Dry Deburring and Polishing Media

• Walnut shell polishing media is a fibrous and
  hard product made after crushing the walnut
  shells and is ground to different sizes from very
  fine to coarse as per the application for dry
  polishing and dry deburring, walnut shell
  polishing media is then treated with polishing or
  deburring paste which has varying additives of
  quartz and aluminum oxide in it for high and low
  abrasiveness even to mirror polish soft metal and
  alloys, plastic, glass, fiberglass, resin, stone,
  rock and many more products and untreated walnut
  shell media is used mainly to clean metal or
  nonmetal surfaces. It is used mostly in vibrating
  tumblers, rotating tumblers and centrifugal disc
  polishing machines mixed with creamy abrasive
  pastes of different properties as per the
  requirement of surface finishing. The walnut
  granules are recommended for deburring,
  smoothing, polishing and mirror shining. Walnut
  shell is widely used for cleaning and polishing
  of tarnished brass products, aluminum parts,
  shell cartridges, eyeglass frame and lenses,
  ivory products, mechanical parts, gems and
  jewelry of all metals with and without studding,
  watches, zinc castings parts. With coarse
  deburring paste to remove burrs wets, corners,
  edges without scratching or etching the product
  being polished, it is extremely durable
  multi-faceted and angular in nature and is known
  for its soft polishing nature advantages, it is
   ecofriendly biodegradable product and can be
  reused with long lasting life depending on the
  time used and roughness of the surface of walnut
  and product to be polished.
• Most used process with walnut shell for polishing
  is dry deburring with high coarse polishing paste
  impregnated on it and subsequent polishing and
  smoothing or shinning with low coarse paste
  impregnated on the walnut shell media for final
  shine of the products i.e two different Dry
  polishing process- first for Dry deburring and
  second Dry Polishing or final polishing of the
  surface.
• The recommended quantity is calculated as per the
  capacity of the vibrator or centrifugal tumbler
  where it is filled with 4/6 by polishing media
  and 1/6 is the product by volume and rest 1/6 is
  left empty for the media movement, after the
  media starts moving more products to be polished
  can be added with a precaution that they dont
  strike with each other leading to denting or
  scratching on the surface and each product should
  be completely surrounded by the polishing media
  throughout the entire run, too much of media will
  avoid the adequate tumbling action in the barrel
  and lesser amount of media will lead to products
  denting each other. Ratio of media to products
  and tumbler capacity can be concluded with
  experience.

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Walnut Shell Dry Deburring and Polishing Media
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Wooden Dry Deburring and polishing media for
surface finish

• Wooden Deburring and polishing Media is specially
  chosen and cut for optimal performance in dry
  deburring and polishing of studded jewelry items
  and light products of different materials, which
  in combination with Finishing and deburring paste
  is ideal for deburring and surface smoothing of
  metal (ferrous and nonferrous) and nonmetal
  products.Benefits no water required, near
  mirror finishing with consistent surface finish,
  light weight so does not dent the product surface
  and can be used in dry vibrators to polish
  plastic, resin, horn, acetate and metal frames,
  plastic goods , wooden items and different
  metals, dry deburring and polishing is done by
  removing the scratches and pits with abrasive
  paste where the abrasive particles are much
  harder than the product ( metal and nonmetal) to
  be polished and these particles work as tool bits
  and its size is so small that it does not dent or
  scratch the surface the product to be polished
  and it does so on the microscopic level and
  increases friction at the surface where it
  interface with media and heats a thin layer of
  the product surface that tends to flow rather
  than cut the surface.In dry polishing and
  deburring process the abrasive paste and wooden
  media grades play a major role to remove the
  deepest defects of the surface and then the finer
  grades are used to remove the scratches from
  deburring grade polishing paste used
  earlier.Wooden polishing media should be renewed
  regularly by removing the paste deposited on the
  wooden media surface or use fresh surface as per
  the requirements.
• Wooden polishing media of different sizes and
  shapes

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Wooden Dry Deburring and polishing media for
surface finish
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