Metal Backing Plates

Metal Backing Plates - Rigid Flat Foundation for Flat Lap Machines, 6" to 12"

Our Metal Backing Plates provide a rigid, flat foundation for master laps, lapping films, and polishing pads on flat lap machines. Available in full-face and 1/2" center hole variants from 6" to 12" diameter, these durable metal plates ensure stable, vibration-free grinding and polishing support across all standard flat lap machine sizes.

Shop Metal Backing Plates - From $8.50

Available Sizes and Pricing

Diameter Full Face 1/2" Hole
6" $8.50 $8.50
8" $10.00 $10.00
10" $20.00 $20.00
12" $22.00 $22.00

Full Face vs. 1/2" Hole

  • Full Face - Solid surface across the entire diameter for maximum support area
  • 1/2" Hole - Center hole for mounting on 1/2" arbor spindles

Compatible Applications

  • Flat lap machine platen support - rigid backing for diamond laps, lapping films, and polishing pads
  • Master lap mounting - stable base for aluminium and plastic master lap systems
  • PSA disc mounting - flat surface for pressure-sensitive adhesive backed laps and films
  • Gemstone faceting machines - 6" and 8" plates for standard faceting machine platens
  • Lapidary flat lap machines - 10" and 12" plates for larger flat lap machine sizes
  • Wet lapping environments - durable metal construction handles continuous water use

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Frequently Asked Questions

  • Q: What is a metal backing plate used for on a flat lap machine?
    A: A metal backing plate provides a rigid, flat foundation for mounting diamond laps, lapping films, and polishing pads on flat lap machine platens. The rigid metal surface prevents flex and vibration during grinding, ensuring consistent, accurate lap contact across the full disc face.
  • Q: What is the difference between full face and 1/2" hole backing plates?
    A: Full face plates have a solid surface across the entire diameter for maximum support area. The 1/2" hole variants have a center hole for mounting on spindles with a 1/2" arbor. Choose based on your machine spindle configuration.
  • Q: Can metal backing plates be used in wet lapping environments?
    A: Yes - the durable metal construction handles continuous wet lapping use. Rinse and dry the plate after use to prevent surface oxidation over time.