HP-35 cleanning

[Jeff_Birt]

(09-04-2023 10:57 AM)vaklaff Wrote:  No personal experience but I'd suggest caution. The video's author mentions that he tried to brighten the keys too but their color started to become uneven so he stopped. Maybe because it's hard to keep many little objects in "even" positions? The material plays role as well.

If you play with retrobrighting please share your experience whatever the results are!

I did a large amount of research into the Retr0Brite process a few years ago which was documented in the first below video and the paper which is in the video description. The short story is that not every type of plastic responds well but most lighter colors do.

The second two videos are a VIC-20 I restored going to extremes to see if the Retr0Brite process 'destroys' plastic. Some of the brown keys were very faded and they can turn blotchy when you try to Retr0Brite them. Instead, I polished them since they are double-shot injected keys. This is shown in the second video. Of course, you can't do this with keys that are painted.

https://youtu.be/YPl356YKcVs

https://youtu.be/YPl356YKcVs

https://youtu.be/_IuGFQ6-GAA