I hope this video can be useful for many people!
https://www.youtube.com/watch?v=q3PYRltO4_4
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I hope this video can be useful for many people!
https://www.youtube.com/watch?v=q3PYRltO4_4
You are lucky you lived to tell us about it. It is a bad idea to count on luck, since some of us do not have it. Thank you for telling us, as I know it must be hard to admit fault.
Bill
WmRMeyers, fortunately it's not me in this video! I shared it here due to the relevance of the fact that it can happen even with the most experienced!
Rule 1(debatable) Never leave the chuck key in the chuck.
Rule 2(debatable) Don't have loose hair or clothing dangling.
Rule 3(debatable) No jewelry on the hands or wrist. There are many things to consider for safety when operating a machine tool. I'm not really sure of the order of the rules.
IIRC, that is the exact order we were taught in my class.Quote:
Originally Posted by Floradawg
Well, thank you for posting it, and thank HIM for being willing to post it where you could find it to show us. Everyone needs a reminder of the stakes in the games we play.Quote:
Originally Posted by machining 4 all
Bill
Common sense comes into play here as well. But if common sense was so common more people would have than not.
Well said dbat74 ,but common sense seems to be disappearing, from most thing's in the world today.
Try working in a University, here it's known as uncommon sense!Quote:
Originally Posted by sacco1
What is the gizmo under the chuck? A brake?
It looks like a sort of brake to slow the spindle down quicker to speed production maybe.
I would have to see it again to know. It appears to be a pretty old lathe.
I have worked on machine shop equipment all my live and can honestly say...I have no idea.
It looks like a piece of sq. tubing mounted on a pivot with a half cylinder attached to it and yes it would be used for slowing the chuck the evidence shows a slight wear or discoloration to the chuck where it has been used.
I bought a little 10" Southbend back in the mid 60s that had an oak 2x4 on it about like that with a treadle to step on.
Even many newer lathes do not have a spindle stop brake on them.
That scar on the guys neck could have been caused by a ribbon chip. Just the other day while hogging off some parts the chip breaker I had on the tool became dislodged and a long ribbon chip began to form. The lathe I was using doesn't have a brake either, normally I can ignore them but running a 0.250" cut 0.025" feed rate @ 1000 RPM. When the insert becomes a little dull or the chip breaker doesn't do its job those ribbons can turn deadly very quick.
That's right, and when we would get a nice tight curled, blue chip, we had a unapproved contest to see who could get the longest one without breaking. But you had to help it and sometimes hold it to keep it from getting under something and break.
Yeah, I've seen guys do that. Scary.
"Oh, I've done that thousands and thousands of times, and nothing ever happened." If you do something not so smart, and it doesn't go bad the first time, how do you know it was a bad idea? Eventually you'll figure it isn't a problem because nothing bad ever happens. Until it does. I collect aphorisms. Here are a couple of them on experience:Quote:
Originally Posted by dbat74
Good judgement comes from experience. Experience comes from bad judgement.
The only reason I know anything is because I've done it wrong enough times to START to know better
The problem with gaining experience is that sometimes the result of gaining that experience will kill you. Was a young lady died some years ago working alone in a college machine shop. Ivy League, IIRC. Got her long hair caught in the chuck on the lathe she was using, and died. I know she was told that was dangerous.
My school will throw you out of the class if you keep making safety mistakes like that, and the instructors WILL call you on them. We aren't allowed to use the machinery unless an instructor is there.
And as others have commened, common sense is not so common as you'd like to believe.
I like your aphorisms.
I started collecting them when I took over the ISR (in-school restriction) classroom at the local high school a couple of decades ago. One of the previous teachers aides there was a retired Army Lt. Col., and he'd posted a bunch of them in the room. I didn't take any of his down, but did add some of my own. I worked there for nearly 5 years while I was getting the prerequisite classes out of the way before starting my teaching program. If they had ISR when I was in HS, I'd have probably been in it a bunch. I was trying to help the kids figure out other ways to avoid getting in trouble. I'd been in enough myself. ;) I've been out of the teaching field entirely for over 8 years, now, but still collect aphorisms. I'll probably be putting some of them on the wall in my shop once I get to the point it's not bare studs.Quote:
Originally Posted by Floradawg
Bill
Common sense for what?
https://www.youtube.com/watch?v=tV6jgMWCg0E
I believe you have just proved my point.Quote:
Originally Posted by machining 4 all
Bill
Floradawg is right: "Stupid is forever, ignorance can be fixed..."
And somebody in that video got a bunch of non-fatal experience! Some of the folks who saw it probably learned a few things, too. Intelligence is that which allows you to recognize a mistake when you make it again. Wisdom is learning from the mistakes of others.Quote:
Originally Posted by machining 4 all
Yes they can. Years ago a high school kid had one skewer up under his chin into his skull. Standing in the wrong place at the wrong time.Quote:
Originally Posted by Frank S
What's with the shaper on your p/u tail gate? That is a shaper right?
One time I was making a batch of 10 inch diameter 4 grove cable sheaves "pullies' out of UHMW I had ground a cutter to cut all 4 groves at once. Just lock the bore of the 3 inch thick round blank on an arbor and plunge as hard or as fast as you dared while shooting 4 60 to 100 ft long 1/2inch wide streamers all the way across the shop It wasn't uncommon for me to fill a 4 yard dumpster in a single night with swarth from those sheaves. My wife tried to time it so she could bundle up an arm load and drag them out while I was changing out a finished part with a new blankQuote:
Originally Posted by dbat74
https://safetyrisk.net/workplace-saf...y-don-merrell/
I have one on my office pin-board (old school tech), as a reminder not to 'look the other way'.
Yes, it's a Lewis shaper. They were sold as kits of castings, and machined by the folks who wanted them between the 1920's and 1957. That photo was taken the day I bought it, as I was getting ready to unload it. It had belonged to our friend Dale Smith, who passed away before he could get it running. My friend Bill Hinkle, who has also passed now, bought it from Dale's wife, and sold it to me for a ridiculously low price, and offered to let me pay for it as I could.Quote:
Originally Posted by dbat74
SWMBO graciously allowed me to steal grocery money to pay for it, and I've been spending much of my spare shop time cleaning it up and collecting stuff to make it run again. Repeatedly interrupted by many and varied events. It had sat outside in the rain for several months when I got it, a year or so after Dale's passing, so needed a lot of work, and I didn't have a lot of time or money to spend on it.
A bit over a year (maybe 2) ago, I found a commercial 3phase 1/2HP gearmotor for it, got a matching VFD from Ebay, and got the motor running. I've been trying to get the motor mount arranged for quite some time. I had once fired it up with a normal 1725rpm 1ph motor and pulley system, and it worked but the (I thought) heavy-duty file cabinet I was going to use for a stand turned out to be a LOT more flexible than I thought. So it went back on a welded angle-iron frame I'd gotten with a band saw I bought. The new motor mount spent about 2 years clamped in place with a set of visegrips.
I've been refurbishing the original motor mount stuff & countershaft stuff I got with it. I made it a new countershaft, but now I'm searching the shop for the arbor that shaft goes in. It needs new bearings. So I'm sort of stuck until I find that. Bill H. had a Lewis shaper also, and I have photos of how his was set up. I'm going for something more like his was than what mine had when I got it. It's going to need some more rust removal, and some bits and pieces rebuilt. I'm hoping to have it finished by the time school lets out. Which I found out yesterday is late next week. So I also need to work on the shop more and get a couple more machines placed where I can use them so I have access to lathes and such this summer.
Bill
Stupid is forever, ignorance can be fixed.....yes I stole that little tid bit....but oh so true.
Sounds like a good project Wm. But long. Keep after it and U will love the outcome.
I used a shaper and lathe in my high school senior year machine shop class, and wanted one of each. Took me abut 35 years or so to get the first lathe, and a few more to get the shaper. I'm having fun playing with it, and will one of these days be having fun using it. I'm taking another class in machining, but they don't teach shapers anymore. Not too many years after my 1st class, they fell out of favor.Quote:
Originally Posted by dbat74
I've been a machinist all my working life and have operated shapers the size of a pick up truck and horizontal boring mills that ran on tracks 5 ft down in a pit, but
never a little one like that. Almost wish I had one, but I'm into wood turning and enjoying that.
When I was studying machine tool technology they had a sign on the wall in the shop stating that. Needless to say it made an impression on me.
It took decades to get my first machine. Now I'm having a bit of trouble shoehorning them into the space I have for a workshop. As far as wood goes, I'm more a wood butcher. For some reason I find metal more forgiving. Could be an aspect of the attention deficit disorder.Quote:
Originally Posted by dbat74