Having a workpiece through the headstock spindle bore isn't over capacity, if it was the spindle would be solid...
Having a workpiece through the headstock spindle bore isn't over capacity, if it was the spindle would be solid...
I'm not even allowed scissors unless they're plastic and have rounded ends.
Of course, it never happened in a production environment that stock is fed through the spindle, part turned and parted off then stock advanced to make the next one.
Why do you keep editing your post?
You're only demonstrating that you completely misunderstood my post initially.
tube is stronger than solid bar
tube doesn't bend as easy as solid bar wouldIn what respect?
I'm confused now...
Is it okay to put a long bar though the spindle to machine the end or to have a bar overhang the end of the bed to machine the middle with a steady rest in place of a tail stock?
I would have thought yes, provided no one else is going near the overhanging bar (And there are free standing support rollers if the bar is especially long), but I'm not a professional and have no training so I don't know.
The only thing I disagree with in Matt's post is his use of the word 'mandrel'
I'm confused now...
Is it okay to put a long bar though the spindle to machine the end or to have a bar overhang the end of the bed to machine the middle with a steady rest in place of a tail stock?
I would have thought yes, provided no one else is going near the overhanging bar (And there are free standing support rollers if the bar is especially long), but I'm not a professional and have no training so I don't know.
in other words common sense.....maybe not so common now, on another note, this thread has taught me what it is to be a ''bell end'' its not a common phrase over here,I would like to thank composite pro for this education. I don't know how anybody could get so worked up about the matters expressed above,do what you need to doYou don't spin up a long thin piece if it's unsupported. It'll wobble then bend and all hell will break loose. People get hurt or killed and stuff gets smashed to bits, you might even topple the lathe if the bent bit can reach the ground. You have to restrain it in some kind of tube of ring steady so it doesn't go out of control. Some people simply drill a hole in a block of wood, pass the long end through the hole and clamp the wood to something sturdy.
in 40 years theres only a few jobs that I havent managed due to the diameter and length of jobOddly, in the entire time I have owned my lathe I have yet to make anything that requires being passed through the headstock. Biggest stuff I make is motorcycle axels and swing arms.