@67975218 @:ihavenomouth:  @cassidyclown @m i s a n t h r o p i c 

> the hardware store should sell various corrosion removers

try 10% citric acid. that should be something vaguely like 100 g in 1 L of water. probably wear goggles and gloves at that concentration (I'm not actually sure at what concentration it becomes an acute hazard tho)