Barrel polishing?

[Sniperhandle]

I use a tight sleeved cotton shirt when contouring. I got tired of the burns on my arms.

Only takes a split second, This is one of the more humane accidents, I'm sure the guy on the video I'm posting has a broken arm and dislocated shoulder minimum and is lucky to be alive.

Wearing long sleeves or loose clothing while using a lathe or any rotating equipment is very foolish.

I can't find the pics of the poor Australian guy that was set to retire in a week and stayed during lunch to finish a project, Long story short, His co-workers returned from lunch to find the lathe still running with the chuck dug through his torso, Poor guy was dead. He was wearing a long sleeve shirt, He knew better, I'm sure he had been told many times.

Click watch on Youtube to view the video. Skip to 3:10

 

[WSnyder]

There was a gruesome video a few years ago of a Russian guy that got sucked into a large lathe. He was dead in seconds and his body squished into nothingness in 30 seconds or less. He just disintegrated into flying flesh with hardly any recognizable parts left. It's probably still out there if you dare to look.

 

[Sniperhandle]

It's always the clothing, Usually the sleeves that get the problem started.

 

[WSnyder]

View attachment 1611433
It's always the clothing, Usually the sleeves that get the problem started.

You just had to go find that poor Russian dude didn't ya??? It must have been cold in that shop as he was wearing a puffy jacket or something like it if I recall. I wonder who got the job of cleaning up that mess?

 

[Jonnyofalltrades]

View attachment 1611433
It's always the clothing, Usually the sleeves that get the problem started.

That's hard on the breakfast!
Poor guy.
It's so easy to make mistakes, but usually we get away with just a scare.
Seeing this stuff is hard, but I wish I had been better informed when I began my apprenticeship. My first "journeyman" was pretty terrible. I thank God I wasn't hurt badly, and for the other great mentors and instructors later who taught me.

 

[Sniperhandle]

The clothing is wrapped around the shaft. Every one I have seen has been someone with long sleeves.

 

[LVLAaron]

Trizact belts are the ticket.

 

[Dan-Schenk]

Has anyone tried burnishing? Or bad idea?

 

[gero]

The light reflection might help by hindering the competition. LOL

....painful and gonna resist caveats, warnings and otherwise posturing about the thumb, anyone of us can fuck up.....

 

[V35]

Trizact belts are the ticket.
View attachment 1612457

Looks great, those 3M belts are the best.

You laser work looks clean as well. My laser arrives tomorrow, I shall see if I can figure it out this week.

 

[LVLAaron]

Looks great, those 3M belts are the best.

You laser work looks clean as well. My laser arrives tomorrow, I shall see if I can figure it out this week.

Pro tip... a deep engrave like that leaves some slag behind that's hard as diamond... sand that off with some cheap hardware store sandpaper before you burn up expensive 2x72 belts.

 

[hdskip]

Damn.

I really want a surface grinder but I've heard some stories...

I worked on surface grinders for 10 years. Most potentially dangerous machine in shop in my opinion.

 

[urbanrifleman]

I know some of the different types of belts can shock the pee out of you

 

[CCM]

Pro tip... a deep engrave like that leaves some slag behind that's hard as diamond... sand that off with some cheap hardware store sandpaper before you burn up expensive 2x72 belts.

Offset your lettering to the outside by about .005" and hit it with an annealing pass. It'll burn off the slag and leave it smooth.

 

[LVLAaron]

Will give that a shot. I've seen people say "cleanup pass" a million times but never saw what that meant.

 

[swd]

I know some of the different types of belts can shock the pee out of you

I had one that built up so much static and shocked the crap out of me so bad I had to attach a wire from it to myself. LOL

 

[LVLAaron]

I lean into the platen on my belt grinder to avoid that

 

[CCM]

Will give that a shot. I've seen people say "cleanup pass" a million times but never saw what that meant.

50W 200mm lens: 330 speed, 34 power, 190kHz, bi directional, crosshatch. 2 passes usually does it.

 

[Machinist John]

This one will keep you out of trouble. Hands/fingers not close to the barrel. No strip of emery loth to wrap up your fingers. I have belts from 80 grit to 600 grit. Variable speed DC motor.

Set the thing up, engage the lathe feed and watch.

The Russian lathe incident happened when the operator was polishing bearing fits on the rollers you see on the pallet in front of the lathe. He was using a long strip of emery, wearing a baggy heavy coat, and got his left sleeve caught by the chuck jaws. I saw the original video a few years ago on Practical Machinist forum. A camera was tucked away over the lathe. Very nasty, the camera captured everything, showed him picking up the emery strip and then disaster. Torso was jammed between the lathe bed and the chip pan.

 

[LVLAaron]

Really slick setup there.