287. We now take a piece of iron whose length when turned true will equal its finished and threaded circumference, and after truing it up and leaving it a little above its required finished diameter, we put a pointed tool in the slide-rest and mark a line A A in Fig.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose
If we have no pattern we may turn at each end of the part that is to be taper a short parallel place, truing it up and leaving it larger to the same amount at each end than the finished size, and taking care that the parallel part at the small end will all turn out in the finishing.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose
First, the bar may be set to accommodate the cylinder bore, truing it out with as light a cut as possible.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose