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The other piece of metal you’ll need is the thing you want to have the rust removed from. Description from somanyhobbies.wordpress.com. I searched for this on bing.com/images

I’ve been saying for a long time that I’d do a post on rust removal using electrolysis. I’ve finally gotten around to doing it. In this application Electrolysis uses electricity…

Wood bendable tray table ~ would work well for my sofa since my couch arms are kind of pillowish.

Sofa Tray Table natural, Wooden TV tray, Wooden Coffee Table, Lap Desk for small spaces - LipLap sofa arm table - rolls up and drapes over any sofa arm!