HP-35 cleanning

[teenix]

(08-27-2023 11:16 PM)rprosperi Wrote:  Nice suggestion to use emery paper to roughen the surface, thanks Tony. Other than that I do it the exact same way and am always pleased with how good the results are. From now on, I'll be using the emery paper as well.

Thanks!

Thanks Bob, I use really fine paper, 2400 upwards, almost talcum powder grit to avoid deep scratches, and pieces just large enough to handle to help avoiding accidently rubbing it on other parts. The plastic is reasonably soft, so light finger pressure works well and helps avoid creating furrows if you pressed too hard.

The old silver does not need to be rubbed off, it is just the overall scuffing that helps.

cheers

Tony