The slightly nicer ones have scraped mating surfaces. The very cheap ones will at a minimum be surface ground very well, and have some oil scrapes. > You can m

The slightly nicer ones have scraped mating surfaces. The very cheap ones will at a minimum be surface ground very well, and have some oil scrapes. > You can make accurate parts on an 'inaccurate' conventional machine. To a point, sure. At some stage, it doesn't matter how much of an old timer you are and how much knowledge of your machines' limitations you have - you just need to make a part the machine cannot. You can basically always rescrape a machine, give it new gibs, and be back to 100%.