Beginner question › Forums › Polishing › Beginner question 3 replies, 3 voices Last updated by Rick_Brooker 4 months, 3 weeks ago Viewing 4 posts - 1 through 4 (of 4 total) Author Posts March 1, 2019 at 4:17 pm #5335 johnvParticipant @JohnV Can I use a steel master lap for final polishing, and if yes how do I set it up March 1, 2019 at 5:05 pm #5336 johnvParticipant @JohnV correction aluminum master lap March 1, 2019 at 8:20 pm #5337 Alan BalmerKeymaster @alanbalmer A master lap is intended only to support other laps. It’s useful for toppers and polishing films, but not suitable for cutting or polishing by itself. March 1, 2019 at 9:29 pm #5338 Rick_BrookerParticipant @Rick_Brooker If you want to use the aluminum master lap for final polish, you can use a dynalap. They come in many different grits, the blue spectra lap is popular for that. The downside is that it can cause rounded edges on the facets. Author Posts Viewing 4 posts - 1 through 4 (of 4 total) You must be logged in to reply to this topic.