Magnetic Grinding Discs

Magnetic Grinding Discs – Quick-Change Diamond Discs for Flat Lap Machines

Professional magnetic quick-change grinding and polishing discs for flat lap machines. The magnetic master lap system enables instant, tool-free disc swapping between grit stages — eliminating downtime and dramatically speeding up cabbing and faceting workflows. Compatible with standard 6" and 8" magnetic master laps.

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Disc Types

Type Grit Stage Notes
Magnetic Diamond Grinding Disc 60 / 120 / 260 / 600 Coarse to fine grinding Snaps onto magnetic master lap instantly
Magnetic Resin Polish Disc 1200 / 3000 / 8000 Pre-polish to fine polish Flexible resin bond for smooth finish
Magnetic Master Lap — Base unit Required for all magnetic disc use — sold separately

Related Tools

Frequently Asked Questions

  • Q: What is a magnetic quick-change disc system?
    A: A magnetic quick-change system uses a magnetic master lap as the base, with individual grinding and polishing discs that snap on and off instantly without tools. This allows rapid grit stage changes during cabbing or faceting.
  • Q: Do I need a special machine for magnetic discs?
    A: You need a flat lap machine with a compatible magnetic master lap installed. The master lap mounts on the machine arbor, and the quick-change discs attach magnetically to the master lap.
  • Q: Are magnetic discs as durable as standard flat lap discs?
    A: Yes — magnetic discs use the same diamond abrasive quality as standard discs. The magnetic backing adds convenience without compromising grinding or polishing performance.
80 products
  • Diamond Magnetic Backing Dot Lap
    $8.55
    $8.55
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  • Diamond Magnetic Backing Dot Lap
    $166.67
    $166.67
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  • Diamond Magnetic Backing Dot Lap
    $55.56
    $55.56
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  • Diamond Magnetic Backing Dot Lap
    $89.74
    $89.74
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $42.74
    $42.74
    $64.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $55.56
    $55.56
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $55.56
    $55.56
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $55.56
    $55.56
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $55.56
    $55.56
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $55.56
    $55.56
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $47.01
    $47.01
    $64.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    from $14.10
    from $14.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $42.74
    $42.74
    $64.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $42.74
    $42.74
    $64.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $42.74
    $42.74
    $64.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $42.74
    $42.74
    $64.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $42.74
    $42.74
    $64.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $42.74
    $42.74
    $64.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $42.74
    $42.74
    $64.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $166.67
    $166.67
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $166.67
    $166.67
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $166.67
    $166.67
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $166.67
    $166.67
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $166.67
    $166.67
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $166.67
    $166.67
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $166.67
    $166.67
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $166.67
    $166.67
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $123.93
    $123.93
    $252.14
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $123.93
    $123.93
    $252.14
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $123.93
    $123.93
    $252.14
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $123.93
    $123.93
    $252.14
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $123.93
    $123.93
    $252.14
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $123.93
    $123.93
    $252.14
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $123.93
    $123.93
    $252.14
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $123.93
    $123.93
    $252.14
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $89.74
    $89.74
    $188.03
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $89.74
    $89.74
    $188.03
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $89.74
    $89.74
    $188.03
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $89.74
    $89.74
    $188.03
    Sold out
  • Diamond Magnetic Backing Dot Lap
    $89.74
    $89.74
    $188.03
    Sold out