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LC-UPC (1.25mm) - Domaille Polisher
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Connector Type: LC-UPC (1.25mm)
Polishing Machine: Domaille
3M Technical Service Engineers recommend using the following sequences for polishing LC-UPC 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 |
5 |
Gray |
Silicon Carbide |
461X |
Step 1
Remove Epoxy |
3 |
Pink |
Diamond or Silicon Carbide |
661X or 463X |
| Gray |
| Step 2 |
1 |
Purple |
Diamond |
661X |
| Step 3 |
- |
White |
Final Polish |
863X |
* All abrasive discs are available with PSA (self-adhesive) backing.
Recommended Sequence - Option 2
| 3M™ Lapping Film |
| Step |
Micron Grade |
Color |
Mineral |
Product I.D.* |
| Denub |
15 |
Gray |
Silicon Carbide |
461X |
Step 1
Remove Epoxy |
3 |
Pink |
Diamond |
661X |
| Step 2 |
1 |
Purple |
Diamond |
661X |
Step 3
(Repeat Step 2) |
1 |
Purple |
Diamond |
661X |
| Step 4 |
- |
White |
Final Polish |
863X |
* All abrasive discs are available with PSA (self-adhesive) backing.
| 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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