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Jim said I should score the wing before removing it. That will help to guide the cut so the razor blade does not nick the cladding. He also suggested using sandpaper, maybe even 400 grit, on some of the fibers, but Dr. Jones said I should not do any sanding to remove wings. I tried using 5 micron grit on some of the practice fibers, but the fine grit was little help for removing wings.
Jim said I should score the wing before removing it. That will help to guide the cut so the razor blade does not nick the cladding. He also suggested using sandpaper, maybe even 400 grit, on some of the fibers, but Dr. Jones said I should not do any sanding to remove wings. I tried using 5 micron grit on some of the practice fibers, but the fine grit was little help for removing wings.
Jim looked at my fused fibers and saw that the wings were not only at opposite corners but also at adjacent corners. He realized that one of the quartz ferrules is probably cracked.
He said the cladding has a lower boiling point than the core of the fiber, so sometimes it can boil away in spots. There can be a bubble that pops and leaves a little pothole, for example.
I should remove the wings before weight-testing the fibers because they could be strong when the rest of the fuse is weak.
To remove the wings, I should put the fiber down and run the point of the razor along the side until it cuts through the wing. I could also try sandpaper and look with the microscope or camera at the results.