What should you do while polishing to achieve accurate blending?

• A. Experiment with different abrasives
• B. Use the same abrasive throughout
• C. Increase speed only
• D. Polish without lubrication

Answer: (A)

Achieving accurate blending relies on progressive finishing with different abrasive grits. Start with a coarser abrasive to shape and remove noticeable tool marks where the surfaces meet, then step through progressively finer abrasives to refine the surface and erase the scratch patterns, creating a smooth, seamless transition. Using the same abrasive throughout keeps the initial scratch pattern and prevents true blending, so the transition won’t look uniform. Increasing speed alone doesn’t remove or randomize scratches and can cause heat buildup, which can warp or burn the metal. Polishing without lubrication increases friction and heat and can clog the abrasive, leading to poor finish and damage. By systematically trying different abrasives, you build up a controlled, even blend across the area.