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Abrasives for Electronics Finishing

LC-APC (1.25mm) - Domaille Polisher

LC-APC 1.25mm

Connector Type: LC-APC (1.25mm)
Polishing Machine: Domaille

3M Technical Service Engineers recommend using the following sequences for polishing LC-APC connectors using a Domaille polishing machine. These sequences provide typical starting points. Your actual process may vary depending on your polishing equipment and requirements.

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PDF 3M Fiber Optic Polishing
(PDF 883 KB)

Recommended Sequence

3M™ Lapping Film
Step Micron Grade Color Mineral Product I.D.*
Denub 15 Gray Silicon Carbide 461X
Step 1
Remove Epoxy
15 Gray Silicon Carbide 461X
Step 2 3 Pink Diamond 661X
Step 3 1 Purple Diamond 661X
Step 4 - White Final Polish 863X

* All abrasive discs are available with PSA (self-adhesive) backing.

Problem Possible Solution
Fiber height too high 1. Increase polishing time.
2. Decrease speed.
Connector has too many visual defects 1. Increase polishing time.
2. Use harder back up pad.
3. Use 863XW instead of 863X for final polishing step.

Polishing Tips:

  • Use deionized water as a lubricant.
  • Adjust machine pressure to accommodate for the number of connectors in your fixture.
  • If you have questions, call the 3M Fiber Optics Development Laboratory at 1-866-866-0922.

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