Collection: Master Support Laps

Professional aluminium master support laps and screwback master laps for faceting machines and flat lap systems. Available in 6" and 8" diameters in 1/2" flat aluminium master lap and 1/4"-20 screwback configurations in both right-hand and left-hand thread - providing a stable, precision backing plate for diamond flat lap discs, lapping film discs, and polishing pads on faceting machines. The flat aluminium surface ensures true, accurate lap support for consistent faceting results.

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Available Products

Key Features

• Precision flat aluminium surface for accurate, stable lap support on faceting machines
• 1/2" flat master lap for standard flat lap disc and lapping film disc mounting
• 1/4"-20 screwback in right-hand and left-hand thread for faceting machine spindle compatibility
• 6" and 8" sizes for standard faceting machines and flat lap systems
• Compatible with diamond flat lap discs, lapping film discs, and polishing pads

Related Tools

• Diamond Faceting Laps
• Diamond Full Face Laps
• Diamond Flat Lap Discs
• Diamond Lapping Film Discs
• Tin Polishing Laps

Frequently Asked Questions

• Q: What is the difference between the 1/2" aluminium master lap and the 1/4"-20 screwback lap?
  A: The 1/2" aluminium master lap is a flat backing plate that accepts lapping film discs and flat lap discs with 1/2" center hole mounting. The 1/4"-20 screwback lap threads directly onto the faceting machine spindle (right or left hand) and provides a flat surface for mounting lapping film and polishing pads. Choose based on your faceting machine's spindle configuration.
• Q: How do I choose right-hand vs left-hand thread?
  A: Match the thread hand to your faceting machine spindle. Most US faceting machines use right-hand thread. Check your machine manual to confirm before ordering.