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Yes, mine too is showing signs of scouring. It has worn about 1/3rd the way through the plastic. Bad design.
A possible solution: lever off the thin steel sliding cover from an old 3.5" floppy disk, cut an L-shaped piece out of it (the steel sliding cover) to size (need a Dremel grinder or something similar - the steel is tough), and use it as a shield for the plastic - glue into place on the existing piece(s) of the azimuth brake with superglue. See diagram below showing where to cut.
A variant: I found an old 720K Memorex floppy that used a black plastic sliding cover, and I've just cut a piece to size and glued it into place. Seems to work but time will tell.
A plastic piece will continue to wear, so will need replacing, whereas a steel piece will wear the alloy azimuth 'wheel'.
DN
Last edited by dcnicholls; 26-12-2006 at 03:52 PM.
Reason: clarification, spelling
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