To be honest you don't need a lathe to do the axles the average length for driving wheel axle is 1 inch varies a bit depending on the boss.I just stick a wheel each side of the back to back measure off with a vernier ,then rod in vice and a quick hacksaw then clean up the ends with a file Hey presto one axle simples.As for pin point axles 1.5mm steel rod cut to 28mm,stick it in a drill,fire it up and with a fine carborundum block form a point the angle isn't that critical.Its worked for the last 15 locos and 60 bits of stock.Andy