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APC (2.5mm) - Domaille Polisher
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Connector Type: APC (2.5mm)
Polishing Machine: Domaille
3M Technical Service Engineers recommend using the following sequences for polishing 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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 3M Fiber Optic Polishing
(PDF 883 KB)
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Recommended Sequence
| 3M™ Lapping Film |
| Step |
Micron Grade |
Color |
Mineral |
Product I.D.* |
| Denub |
15 |
Gray |
Silicon Carbide |
461X |
Step 1
Form Angle/
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.
** Form Angle/Remove Epoxy step can be done with a 3M™ Diamond Metal Bond Disc, 9 micron.
| Troubleshooting |
| 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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