I have a bathroom sink in my old house that looks authentic for the time period, but is very old and chipped.

I thought this might be a good way to give it a new lease on life: Patch up the chips with Automotive filler (aka bondo or bog) and then spray the whole thing over with spray on enamel.

I just wanted to ask peoples advice here: is this a feasible idea? Or not a good thing to do?