Just got a South Bend 10" Heavy and the ways are just slightly worn near the chuck (you can just barely feel a ridge with your finger nail). I called a place that rebuilds and to grind the ways and scrape the various parts back to fit would be $6,000. Yeah, right. Starting to learn hand scraping but that's a big job plus I still have all the other parts to fix up after the ways are ground or scraped. From a practical standpoint, I'm just a beginner so this is probably not worth worrying about for a while.
So, almost a hypothetical question - since the ends of the ways are still perfect, wouldn't it be possible to use one of those little home plating systems to add nickel or chrome to the areas that are worn and then scrape them to the original contours? Seems like it would be a lot less work. Since this doesn't seem to be the common way to go I'd like to be enlightened as to why.