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Thermoplastic MT (Single or Multimode) - US Conec® Polisher
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Connector Type: Thermoplastic MT (Single or Multimode)
Polishing Machine: US Conec®
3M Technical Service Engineers recommend using the following sequences for polishing Thermoplastic MT (Single or Multimode) connectors using a US Conec® 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 or Polishing Film |
| Step |
Micron Grade |
Color |
Mineral |
Product I.D.* |
| Denub |
15 |
Rust |
Silicon Carbide |
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Step 1
Remove Epoxy |
15 |
Rust |
Silicon Carbide |
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| Step 2 |
3 |
Gray |
Silicon Carbide |
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| Step 3 |
1 |
Green |
Aluminum Oxide |
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| Step 4 |
- |
White |
Final Polish |
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* All abrasive discs are available with PSA (self-adhesive) backing.
| Troubleshooting |
| Problem |
Possible Solution |
| Not enough protrusion |
1. Make sure connectors are seated in fixture correctly and are making proper contact with polishing plate.
2. Repeat flocked steps.
3. If the final polishing step is done on a glass backup pad, try using a 90 durometer pad. |
Polishing Tips:
- Use deionized water as a lubricant.
- Use glass or metal backup pad, except where noted.
- Keep the fixture and connectors clean. After each step, rinse with deionized water and dry using filtered, pressurized air. Make sure no debris remains in the guide-pin holes. Wipe with alcohol using lint-free wipes.
- To minimize the chance of score through, air polish to reduce the amount of epoxy prior to machine polish.
- Ensure connectors are properly seated in fixture prior to polishing.
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