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SparkFun Electronics will be closed in observance of memorial day on Monday, May 29th. We will resume normal business hours on Tuesday, May 30th. Any orders placed after 2pm Mountain Time on Friday, May 26th will process and ship out on Tuesday, May 30th.

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mristroph

Member Since: January 1, 2012

Country: United States

  • These are NOT good electrical conductors. The mating surfaces are coated with a very thin layer of some sort of clear polymer; it’s what allows them to spin with little friction. You can sand off the coating, or try to scrape it off, and as it gets worn away, it will provide an intermittent connection. It can be made decently reliable with enough careful sanding.

No public wish lists :(