Integrated Polishing System 
Application context
Before using LUXI Black, complete the item’s geometry, necessary repair, and abrasive preparation. P400 is a minimum starting point for many tasks, but preparation to P600 or finer is preferred according to the material, surface condition, item shape, and required result. On platinum, LUXI Black is often used after finer preparation, approximately P800–P1000.
LUXI Black is not intended to correct major shape defects, deep scratches, cracks, open cavities, or unfinished repair. During the first stage, it must fully remove all visible marks from the last abrasive within the capability of LUXI polishing. Do not move to a finer compound while those marks remain visible.
Use a Split-lap wheel or a hard felt wheel on large flat and open surfaces. These tools create a broad stable contact area and help preserve flat geometry. Select between them according to the material, surface area, item shape, and the required character of the first stage.
A sisal wheel provides the most aggressive LUXI Black action. Use it when high removal is genuinely required on a hard material and a less aggressive compound-and-wheel combination cannot complete the first stage. Sisal is not a finishing tool: inspect the surface afterwards and continue with a suitable cotton or other softer working tool.
A hard stitched cotton wheel provides strong action with a softer contact character than sisal. It is suitable for the first stage when high removal is required but geometry, edges, and the quality of the surface left by the pass must be controlled more closely.
Use a bristle brush for recesses and complex relief that an ordinary wheel cannot reach. Select brush size and stiffness for the geometry of the area. Apply LUXI Black minimally and work in short passes, checking regularly that surrounding high points are not being over-polished.
For a standard wheel approximately 150 mm in diameter, the working starting range is 2500–3000 rpm. For a tool of another diameter, select the operating conditions according to linear surface speed and actual contact. Insufficient action must not be compensated for with excessive pressure, excess LUXI Black, or a prolonged continuous pass.
Apply LUXI Black minimally to a clean tool. The wheel must retain direct working contact with the surface rather than being covered with a thick layer of compound and removed metal. If the wheel darkens, becomes clogged, or starts leaving a contaminated trace, clean it before continuing.
The primary scope of LUXI Black is platinum, titanium, stainless steel, and other hard and difficult metals. On bronze, brass, and silver, use LUXI Black mainly on large flat and open surfaces where the contact area weakens the action of LUXI Blue, LUXI Yellow, or LUXI Gray.
On platinum, LUXI Black may perform the first stage after preparation approximately to P800–P1000. When all visible marks from the last abrasive have been removed and the surface is even, the item may move to finishing with LUXI Pink.
The LUXI Black first stage is complete when all visible marks from the last abrasive have been fully removed, the surface is even, and the shape, edges, and flat areas retain the intended geometry. If this does not occur, check preparation quality, tool selection, wheel cleanliness, amount of compound, rpm, pressure, and contact duration.
If polishing opens pores, cracks, or cavities that continue to enlarge, stop work. Such defects are outside the capability of polishing and require a return to abrasive preparation, repair, rejection, or remelting. Stronger pressure and additional LUXI Black will not correct the problem.
LUXI Blue, LUXI Yellow, LUXI Gray, and LUXI Black are first-stage alternatives with different activity levels. Choose LUXI Black when a softer compound cannot fully complete the first stage despite correct preparation and a suitable wheel. They do not need to be applied one after another on every item.
After LUXI Black, select a finer compound according to the material and surface condition. On platinum, the next stage may be LUXI Pink. On other hard materials, LUXI Gray, LUXI Yellow, LUXI Blue, or the appropriate finishing compound may be used according to the trace left by the first stage and the required result.
Before changing to the next compound, remove LUXI Black residue and removed metal, inspect the surface under directed light, and check relief, corners, and recesses. Use a separate clean wheel or tool for the next product so that coarser LUXI Black residue is not transferred to the following stage.
