Reply To: Lap questions. › Forums › Beginner Questions › Lap questions. › Reply To: Lap questions. May 30, 2018 at 8:28 pm #4721 ozgurertanParticipant @ozgurertan You will need diamond polishing lap like tin lap ceramic lap or a Batt lap, if you can get one batt lap with 60k battstik will be great and a prepolishing lap will help for polishing corund group. ozgur at buca izmir Turkey