A different way of work holding

Benji said:
I noted the ball. I have been using them when I offset the tailstock to turn a taper. I made a set of centers to take balls .

I even make the rear "ball Center" offset.
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Yes, I have also made up a few centres to hold a ball some time ago. That works well when offsetting work for taper cutting. The times when I don,t want to mess with the taper attachment, or the tail stock, I use the boring head mounted in the tailstock, and also have ball centres to fit the boring head also.

Using a ball to hold down the manifold as shown in the video is a quick and dirty approach that works well. The ball trick can also used to tighten up a hole that the reamer took out a thou or two over. I just drop a ball on top of the hole, and giver a swift swat with a hammer, the pin will fit nice and snug as it should, works good.
 
AR1911 said:
I could just see that thing on his chin getting caught in a rotating cutter....:bitingnails:
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I hear that...A young guy working two machines down from me, got hung up in the bars on multi spindles. Bloody mess, it was. He had his hair and scalp, his shirt, and cap, were wound up around the bars so tight; it took almost an hour to cut it all off. Couldn't save his scalp, and he almost lost an ear. Really screwed his life up. All in a split second. Be careful out there, guys.

Another guy whom I was training, didn't want to listen to my warnings; and his Afro got hung up after he ducked under the spinning bars. He was screaming at the top of his lungs, (6 rotating bars make a lot of noise), and I barely got the machine shut down in time to save him.
That job was running 1-5/8" round steel bars, at around 700-1200 RPMs? If they would have been hexagonal, or square; it surely would have scalped him, too. One more indexing movement would have broken his neck, and killed him. Had to cut him free, but he survived.

Next time I saw him, he had a crew cut :phew:; and swore he'd never set foot in a machine shop as long as he lived.
 
Good idea to stay out of a machine shop if you are an idiot with an Afro OR long hair!! I agree about clamping over the unsupported ends of the manifold. Could break them off,but the guy's experience was the deciding factor there. I noticed the light tightening he did. Should have used a center cutting end mill if he had one.
 
If he really wanted to show people how that job is done, he could have showed the hassle of setting the manifold up and indicating it in, determining the position of the new holes, aligning the angle brackets, etc. There's lots more than just seeing the end mill plunge through and the spot face tool work.
 
Agreed, but that set-up would have taken all his video time. Seems they hardly ever show how to even get started on a job like that. Some would say that part, would be too boring.
 
To me,just seeing the finished setup,and with a little of imagination,you can figure out how to do it for yourself if you are mechanically inclined.
 
That indicater holder would be a handy tool, and make a good project. Does anyone have a good shot of one? Or better yet, some detailed pics?
 
george wilson said:
To me,just seeing the finished setup,and with a little of imagination,you can figure out how to do it for yourself if you are mechanically inclined.
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Sure George, but if this is supposed to be also for real beginning machinists, I want them to see the whole thing, since at times the setup is more involved and takes longer than the cutting. And imagination is sometimes what's lacking, so a little inspiration would help.
 
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