You can clean rust spots off a porcelain sink easily with a product like Bar Keeper's Friend. This oxalic acid product can be made into paste that removes rust stains. One caution though: rust stains can be permanently set by using a chlorine-based cleaner.
Its fine
I don't know how the rust spots got there but they wont effect the strength of the tiles
The noun rust is a non-count noun. Units of rust are worded as 'spots of rust' or 'patches of rust'
It might do more than that, acid is corrosive and just may etch the glass. If the spots are from water use vinegar, if you need something stronger try CLR. ( calcium lime rust remover ).
Sandpaper will take care of the rust and Clorox for the mold. Good luck!
you don't clean it in the bathtub, that will cause it to rust
The rust spots might be caused by rusting parts inside the dishwasher, such as under the 'wand' piece that rotates at the bottom of the dishwasher. Consult your manufacturer's Operating Manual FIRST then a hardware store manager for suggestions; different products can reduce rust---but not remove it completely. The part(s) will likely need replaced for the rust spots to stop on your knives.
Try CLR or an OXY cleaner.
You can clean your penny board using penetrating oil to prevent rust buildup
Yes, bronze lamps do rust if left out in the rain. If bronze is not well kept, it can quickly become dull-looking and tarnished with spots that resemble rust.
Not very easily. The rust spots have to be cut out and new metal welded back in. Then it has to be ground down and filled with body putty. Then sanded smooth and repainted. Some have tried cutting the rust portion of the fenders out and filling it in with a fiberglass mat and body putty.