收藏: Master Support Laps

Master support laps are the rigid backing plates that form the foundation of lapidary flat lap polishing systems. Machined to a precise flat surface, master laps provide a stable, true backing for PSA-backed polishing pads, diamond discs, leather discs, felt pads, canvas pads, and lapping films. A flat, true master lap is essential for achieving consistent, accurate grinding and polishing results - any warp or runout in the backing plate transfers directly to the working surface.

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Specifications

Compatible Applications

• PSA diamond disc mounting - flat, true surface for accurate diamond disc attachment
• PSA leather polishing disc mounting - stable backing for leather final polish discs
• PSA felt pad mounting - rigid support for felt polishing pads on flat lap machines
• PSA canvas pad mounting - backing plate for canvas polishing pads
• Lapping film mounting - flat reference surface for precision lapping film work
• Standard flat lap machines - 6" to 12" sizes for all standard lapidary flat lap machine spindles

Related Tools

• Magnetic Backed Plates - Magnetic master lap variant for quick-change disc systems
• Metal Backing Plates - Rigid metal plates for PSA disc attachment
• Diamond Flat Lap Discs - PSA diamond discs that mount on master laps
• Leather Polishing Discs - PSA leather polishing discs for master lap systems
• Felt Polishing Pads - PSA felt pads for final polish on master lap systems

Frequently Asked Questions

• Q: What is a master support lap used for in lapidary?
  A: A master support lap is the rigid backing plate that mounts on a flat lap machine spindle. It provides a flat, stable surface for attaching PSA-backed polishing pads, diamond discs, leather discs, felt pads, and lapping films. The master lap stays on the machine while individual working surfaces are swapped as needed.
• Q: How do I attach PSA polishing pads to a master support lap?
  A: Peel the backing paper from the PSA pad, align it carefully on the master lap, and press firmly from the center outward to eliminate air bubbles. Allow a few minutes for the adhesive to bond fully before use.
• Q: How do I remove a PSA pad from a master support lap?
  A: Peel the worn PSA pad from the master lap surface starting from the edge. Remove adhesive residue with isopropyl alcohol and a clean cloth. Allow the surface to dry completely before attaching a new PSA pad.