I know nothing of running a lathe but I caught myself ducking a few times watching this video lol....
My first lathe run
My first lathe run
wizard on the new lathe
- Thread starter Greg-nwo
- Start date
wreckercologist
Well-known member
"Self-taught" pretty much says it all.
OccupantRJ
Well-known member
He must have tightened that chuck with a 3 foot cheater for that slug to stay in there under those conditions. DAYUM! Facial reconstruction and oral surgeons LOVE people like him.
According to the video, it's a piece of exhaust pipe! Nothing like a thin wall tube to come flying out when you least expect it, even with a bull center on the other end!
OccupantRJ
Well-known member
Missed the thinwall on the video, I was so shocked at the unsupported length. It's almost even more amazing that it didn't "squirt" out of the chuck. I went back and looked at the video more closely with sound turned up and could hear the tubing ringing. That's one of those things you have to watch several times to absorb all the screwups, but it scares me more than the movie Poltergeist did.
mjozefow
Well-known member
Ok, now for some constructive criticism:
Find a manual for your lathe, and read it.
Find a manual for your lathe, and read it.
That's one of the scariest things I've seen this month.
Finally A_P and Elroy agree on something
Looks like he had to stop the "burning" before the tool post hit the chuck.
Steve from Socal
Well-known member
Another detail to consider for anyone who is just starting out on a lathe. Spatial orientation of tool holders; make sure the tool post is NOT going to cut your part!
Steve
Steve
Zengineer
Well-known member
I think the "cutting" (or was it rubbing?) tool was engaged when he turned it on too... how that stayed in the jaws I'll never know.
I actually did duck when I started the video.
I actually did duck when I started the video.
toolchaser
Well-known member
Watching that made my palms sweat. How does someone that clueless make it to adulthood? Darwin has failed us all...
It's not a wood lathe... Watching those sparks made my hair fall out, couldn't tell if I felt sorrier for the poor smoking bit or the chuck that was clawing for dear life- worse than a horror film. Hope that guy has health insurance for his new hands and face when that chuck spits at 50k rpm...
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tdkkart
Well-known member
I kept waiting for the chuck to grab hold of the toolpost and compound.......
Pushing hard enough to make sparks on a piece of tube is just asking for it to jump out of the chuck and wack somebody in the nose.
A piece of solid bar probably would have been less dangerous as it would have been heavy enough to simply drop on the ways.
Pushing hard enough to make sparks on a piece of tube is just asking for it to jump out of the chuck and wack somebody in the nose.
A piece of solid bar probably would have been less dangerous as it would have been heavy enough to simply drop on the ways.
Steve from Socal
Well-known member
The idea in holding a long work piece in a lathe is to support it at both ends when possible and; when using a chuck, to apply pressure to maintain contact with the face of the chuck. A center is used with many types of stock and for tubing and large diameter bores a "bullnose" center would be used. If you don't have a center to fit the stock a plate with a center hole can be used to push the material against the chuck face and provide "some" support at the tail end.
There are many types of work holding devices for a lathe and for thin wall tube a mandrel would be a good choice. A mandrel can either be solid with a degree of taper or expanding, where a single mandrel has a range of sizes it can hold, say from 1 inch to 1 and a half.
Unsupported work is potentially dangerous because under the wrong situation it can fly out of the machine or bend and start beating the machine or people. There are some things that do require using the lathe while holding unsupported work, you should limit the length to 2-3 times the diameter in most cases.
Another way the tube could have been supported is with a steady rest. These allow you to support material with out a center and or allows access to the face at the tail end of the stock. There are other ways as well but these are the most common methods to hold something like a thin wall bushing or tube.
Steve
gasgas17
Well-known member
StumpXJ
Well-known member
Here is a little video I did a while back of some tubing. It shows the live center on the right supporting the piece.
~ James
~ James
KYGTP
Well-known member
All that I have to say, Is OMG, that has hard to watch. When he turned it on, I just cringed. The speed that thing was turning was very scary. I guess he will learn, and I hope not the hard way.
Abodyracer
Well-known member
I worked for a short time rebuilding starters and could never run the lathe. Turns out I was having anxiety attacks and couldn't even force myself to turn it on. The weird thing is that at a previous job I could run a pipe threader all day long. I know different machines.
Watching that video brought back the anxiety attack. Dam heart is still beating 200 bpm.
Watching that video brought back the anxiety attack. Dam heart is still beating 200 bpm.
I know the feeling, but about gas welding. Having worked as a machinist all my life, I can sympathize with your trepidation. You see, it's the fear of the unknown. In my case, the pop that can happen when there is too much oxygen when lighting the torch scared me. I overcame that at the local junior college's welding class. I highly recommend you take the conventional machining and cnc classes -I guarantee you will enjoy the experience, and just may find a skill that provides a decent living (or used to). The fear or trepidation you had at even turning on the machine will disappear, believe me.
2chipped
Well-known member
True.........dat
wbrian63
Well-known member
My ears still hurt from all the screeching and squealing. I thought it can't get worse, then I saw him cut away from the chuck...
Notice how out-of-round the tube is when he stops it? There's a large section at the end that is still raw finish.
I once took my '88 Mustang in for a new tires. The cars came with locking lugs from the factory, and the key socket was attached to the tire iron with a cable that rode in a groove in the socket. With much horror, I watched the dim-bulb tire jockey put the locking lug on the stud a couple of turns, take the key and engage the nut, then reach for the impact wrench to "run it home." I could just see the cable binding on the key, wrapping around the socket of the impact driver, and first beating my car to death, and then the idiot attached to the tool. I stopped him quickly and told him not to touch another thing on the car. Went and spoke with the manager about the issue. I was so rattled I actually questioned whether it was a good idea for the jockey to be working there, much less being allowed to possibly have children...
His response? "These things tend to be self-solving."
This "machinist" is likely to solve his own problem.
Notice how out-of-round the tube is when he stops it? There's a large section at the end that is still raw finish.
I once took my '88 Mustang in for a new tires. The cars came with locking lugs from the factory, and the key socket was attached to the tire iron with a cable that rode in a groove in the socket. With much horror, I watched the dim-bulb tire jockey put the locking lug on the stud a couple of turns, take the key and engage the nut, then reach for the impact wrench to "run it home." I could just see the cable binding on the key, wrapping around the socket of the impact driver, and first beating my car to death, and then the idiot attached to the tool. I stopped him quickly and told him not to touch another thing on the car. Went and spoke with the manager about the issue. I was so rattled I actually questioned whether it was a good idea for the jockey to be working there, much less being allowed to possibly have children...
His response? "These things tend to be self-solving."
This "machinist" is likely to solve his own problem.
babzog
Well-known member
Well, never having run a lathe before (well, apart from a woodworking lathe once, in HS, many moons ago), I wasn't sure what I was seeing was so wrong. The ringing was disconcerting and the tool heating up looked somewhat adnormal, but I'm not a machinist so I wouldn't know simply from looking what's dangerous and what's not. Hell, even drilling holes in steel can get things pretty heated.
That's why I prefer to have some instruction before using a new tool with potential hazards. That vid... looked mostly okay to me.
That's why I prefer to have some instruction before using a new tool with potential hazards. That vid... looked mostly okay to me.
Mustangmike
Well-known member
Had my safety glasses on while watching that one...scary..
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woodman07
Member
This is evolution in progress. Stupid people get killed and the smarter ones survive.Not sure why you would want to go through the trouble of even making a vid and posting it if you are an idiot and cant read the instructions before using power tools.
chris
chris
GarageEnvy
Well-known member
I've never run a metal lathe but know enough from running wood lathes to know that was awful. I wish someone had posted on here, "don't worry, it doesn't fly off" before I watched it. I stared, one eye open and off to the side of my monitor watching that video waiting for the horrid injury to occur. Thank God they don't have 3-d youtube videos yet.
porschedude996TT
Well-known member
Where there sparks shooting off the cutter?
buildyourown
Well-known member
- Joined
- Jan 8, 2010
- Messages
- 185
Tip #1:
Sparks are a bad sign.
Sparks are a bad sign.
Reading more information....."safe fun".........sure thing.
Quote:
As the video states this is my FIRST lathe run, I literally bought it from a guy at work he showed me how to turn it on and clamp the workpiece. I realize now how dangerous it was, one of the other things i turned flew off and went across the garage. I have since been reading more information and having safe fun.
Quote:
As the video states this is my FIRST lathe run, I literally bought it from a guy at work he showed me how to turn it on and clamp the workpiece. I realize now how dangerous it was, one of the other things i turned flew off and went across the garage. I have since been reading more information and having safe fun.