Before Lapping Brass After Lapping Brass Lapping & Polishing Brass - Case Study Test Requirements: Matt lap and mirror polish brass components Component/Material: Oval & Rectangular Brass components Stage 1 (Matt Lap) A cast iron plate on a Kemet 15 lapping machine with Kemox 0-800 Aluminium Oxide slurry and a run time of 5 minutes was used to give the components a ?at matt ?nish prior to polishing. Stage 2 (Mirror Polish) Finally an MRE cloth with COL-K and a run time of 20 minutes was used to mirror polish. This produced a blemish free mirror polish. Test Requirements: To lap and polish components. Ra < 0.2µm Component/Material: Cast Iron body & Brass top plate. Parts were run using a non-slip ?lm on a pressure weight , which held 1 part in a control ring at once. The smallest part was h

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