We have noticed recently that when clothes are left in the washer for more than the "usual" waiting time that they sometimes pick up rust spots. On inspection of the wash tub, I found that several of the drain holes have small rusty patches breaking through the enamel at their edges. This photo shows a typical example (you might want to click through and then view it at its largest size):
I'd rather not replace the functional (but admittedly older) washer at this time, and so am wondering what approaches to repair of the enamel surface and removal of the rust might be practical?
Best Answer
Those covers are usually sprayed with dry paint, that is heated and cured in an over to give the best protection. So a DIY fix will only solve it temporoary.
First of all you need to get rid of the "cancer" which is not always easy.
With some coarse sand paper 100/200 grit lightly loosen scratch the affected area.(lightly no need to apply great force)
Then use water sand paper 300-600grit to prepare the surface or to repair it after coats. You don't need to use it with water, using it dry is OK but will not last long. Normal paper is fine, as long as its fine.
Get some corrosion remover (be careful as this is acid and can bleach your clothes, burn your skin and/or damage other surface) so best to this out side. Usually it takes 2 to 4 hours for the rust to be removed. The higher the concentrated the acid is the faster it will work. It will also bubble and smell weird, like rotten eggs in some cases. SO again keep it outside.
Now a common mistake is to clean it with water. Do not do that. Do not clean it at all just let it evaporate and dry.
Now the best is to use a Primer to seal the metal again. And then just for looks you want white enamel on top of that.
TIPS