Long-sleeved shirt?  I thought that was a no-no around a lathe?

That's not me .....

COOL!!!

What was the guy freaking out about in the end. I was trying to hear what he was saying.

That's freakin ingenious though how it uses that 45 degree bar to control the twist like that.

Considering it's not a lathe I don't see the issue...


A couple minutes before that I heard, "shit I just advanced it inaudible" followed by some grumbling then a minute or so later there is some excitement followed by partially audible speech about not advancing it, clever New Englanders, and got get that on camera. The video cuts off with it showing some sort of adjustment mechanism at the end of the stroke that interacts with the cutter and we don't really get to see the cleverness or what it actually does. I assume the depth the cutter makes is somehow controlled by that "button" at the end and that adjustment somehow changes that??


FWIW, it's not 45 degrees. The angle of that bar is what controls the twist rate. One would need to know the ratio of the rack & pinion gear that translates that linear movement into a revolving movement to be able to determine what angle correlates to what twist rate. Pretty neat machines none-the-less.

Pratt and Whitney made these types of machine pre 1900

Well shoot, that makes it OK to wear clothes that can get trapped in a rotating spindle.  
 

Good practice and a keen wit trumps all rules.

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Mesmerizing

My point exactly.



 

When i happens it will be over in a flash.

Drive spindles grab also.

If there is a spinning shaft short sleeves.

I've seen pictures of lathe accidents.  I won't post them here.



 

Long sleeves notwithstanding  ..... that is an interesting piece of historical technology I think.

It is very interesting.



I commented on the obvious safety violation the same way I'd comment in the Reloading Forum if I saw a video of someone welding next to a bench with a press and an open 8 lb. powder bottle.



I really don't think my observation here merits a



 

Many remain in use.

The properties that make stainless a PITA to machine make it a dream to cut rifle.

Like most commercial tooling the base components (bearings, etc.) tend to be pretty standard and easily replaced.
They just keep going, and going, and going.

Not directed at you...more of a comment on the sidetrack the thread took

(heading off to clean off my loading bench now )

A few thousand pounds of cast iron will never wear out, and the little pieces that will, are made to be replaced. Many of the machines in the Remington plant in NY are well over 100 years old and still in use. Back then they made stuff to last!!!

Stuff made now is made with machined aluminum frames and sheet metal instead of massive steel forgings and giant frames of cast iron like back then. Its no wonder places keep using the old machines, nothing today can match them.