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| .Treated Sisal Wheels |
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| ..You need to know all about Treated Sisal Wheels ! |
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| Sisal is a strong fiber used for making twine, cordage etc., obtained from the leaves of Agave Sisalana, cultivated in Tanzania, Kenya, Madagascar, South Africa, Mozambique, Haiti, Venezuela, Cuba, Mexico and Java. |
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| Sisal is a slender, hard, cellular strand of fiber that has demonstrated its great strength and tough resiliency in the form of binder twine, cord & rope for many years. These qualities, along with its natural abrading and grease absorbing characteristics, provide an ideal buffing wheel fabric. |
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| Sisal buffing wheels will provide both polishing and cutting action. They will remove stretcher strains, orange peel, polishing wheel grit lines, light die marks, etc. |
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| To effect a fast cut, use a sisal wheel with the Black Emery compound or any of the greaseless compounds. |
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| Full disc cloth and sisal buffs are used in conjunction with compound for cutting down steel, stainless steel and cast aluminum. They work well for satin finishing where a firm wheel is required. They can be used solid or with spacers. Sisals do not hold compound as well as cloth so compound must be applied more frequently. |
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| .Specifications : |
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| Type |
Treatement |
Construction |
Sizes in Stock (mm) |
| Diameter |
Thickness |
Flange Hole |
| S |
Cut Buffing |
Cotton + Sisal |
300 , 350 , 400 |
24 , 38 , 48 , 62 , 76 |
Upon request |
.Special Sizes |
. Special sizes may be manufactured upon request. |
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| CHOOSING THE RIGHT BUFFING WHEEL ! |
| There are different types of wheels and these have different effects on the compound they are used with. For example, the SISAL wheel is a course "rope like" fiber, which frays out to make a sort of brush. These fibers have a very beneficial effect on scratched and rougher surfaces, almost stroking them smooth. When used with a course "EMERY" compound, they "cut" the metal down very rapidly. You could use this compound on a SPIRAL SEWN wheel and it would work, but the job would take much longer because the softer SPIRAL SEWN wheel is not going to thrash the metal so aggressively. |
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| As you progress through the buffing compounds, you will change your buffing wheel, ending up using the softest polishing wheel, the CANTON FLANNEL with the least abrasive BLUE or RED compound which only polishes, it has no cutting action. |
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| So, depending on the job in hand, you will determine which abrasive compound and wheel you are going to use first, then step down through the stages until YOU are satisfied with the results. |
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| Compounds are made from a mixture of fine abrasive fillers and a sort of greasy wax. The compound is melted, by friction heat, as the bar is pressed to the revolving wheel. This applies a thin layer of abrasive, "glued" onto the cloth wheel, making it similar to an emery paper, only much faster ! |
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| Do not apply the compound after the workpiece, or on its own. This wastes material and is much less efficient. |
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| By applying the material before the workpiece, you actually use the workpiece to force the compound into the buff. This is much less wasteful, more efficient and will actually speed up your buffing times. |
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| Apply small quantities of compound, by approx. 1/2 - 1 second applications to the wheel. |
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| When buffing plastics, it is preferable to use a loose cotton wheel and blue compound, but at a slower rate than normal. An old washing machine motor (1/8hp @ 1800 rpm) is ideal as the slower rpm lessens the chance of burning or melting the plastic. |
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| CUT AND POLISH MOTIONS |
| There are two basic buffing motions you should use. |
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1. CUT MOTION gives you : SMOOTH SURFACE, SEMI-BRIGHT & UNIFORM
The workpiece should be moved AGAINST the direction of the wheel, using a MEDIUM to HARD pressure. |
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| Polishing - This operation removes surface material, improving the surface and preparing it for buffing. This is generally a coarse operation involving sandpaper and/or coarse compounds. |
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| Cut Buffing - This is the preliminary step to “coloring” using a course buffing compound. This buffing operation removes scratches and makes the surface smoother. Black emery polishing compound with a spiral sewn buffing wheel is recommended for cutting down copper, brass, aluminum, steel, stainless steel, nickel, and iron. Brown tripoli buffing compound is not as course as black emery polishing compound but will cut and color copper, brass, and aluminum in one operation. Cutting down may produce a bright, satisfactory result and coloring may not be necessary. |
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2. COLOR MOTION gives you : BRIGHT, SHINY & CLEAN SURFACE
The workpiece should be moved TOWARD the direction of the wheel, using a MEDIUM to LIGHT pressure. |
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| Buffing - This operation makes the surface smooth producing a high luster and mirror finish if desired. This is done with the use of buffing wheels and buffing compounds. Buffing can be divided into two steps; cut buffing and color buffing. |
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| Color Buffing - This buffing operation brings out the maximum shine and produces a mirror like finish. Coloring can take place after “cutting down” or right-away if surface is smooth enough. Loose cotton buffing wheels are usually the best choice for coloring but spiral sewn buffing wheels can be used as well. Brown tripoli buffing compound is a double duty buffing compound and can be used for both coloring and cutting down. White rouge can be used to color chromium, stainless steel, brass, and aluminum. The finest buffing compound is Jewelers rouge a.k.a. red rouge and can be used to produce a mirror like finish on gold, silver, sterling, platinum, and brass. |
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| BUFFING SPEED AND PRESSURE |
| The correct pressure must be applied to the workpiece to provide the best finish economically and safely. |
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| Inadequate pressure will give NO buffing action |
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| Excessive pressure will cause the buffing wheel to slow down or actually collapse. This can also result in burn marks on the workpiece. |
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| BUFF RUNNING SPEEDS |
For best results your wheel should maintain a surface speed of between 1200 & 2500 Speed in Meter Per Minute. (SMPM). The higher your speed, the better and quicker your results.
Formula for calculating surface speed of wheel in SMPM.
SMPM = 3,1416 x diameter of Wheel x RPM (revs of spindle per min.)
Therefore an : 3,1416 x 0,2 mt. (dia. of wheel 200 mm.) x 3600 RPM = 2280 SMPM.
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| Spindle speeds can be increased by a step pulley on a motor shaft. |
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