Largest Manufacturing Technology Community on the Web
Stay Connected:
Video...Quick and Dirty Lathe Boring...
- Thread starter lathefan
- Start date
- Replies 20
- Views 2,533
Yea they get it done and that's really what matters! Thought this was a good tip as well, flaring tube to fit. Needed to do something like that many times, will give it a try someday! Thanks for posting that channel!
Memotong dan Menyambung Pipa Propeller Shaft dengan Busi Bekas | Cutting & Join Pipe - YouTube
Memotong dan Menyambung Pipa Propeller Shaft dengan Busi Bekas | Cutting & Join Pipe - YouTube
MCritchley
Hot Rolled
- Joined
- Mar 22, 2007
- Location
- Milwaukee
That shop definitely has a can do attitude
Greg Menke
Diamond
- Joined
- Feb 22, 2004
- Location
- Baltimore, MD, USA
Similarly a somewhat better kept & equipped shop than those in many similar videos. I like how the operator shimmed the tool in the 3-jaw chuck... not so much how he welded the workholding tab to the part...
...portable line boring equipment is temporarily welded to the work...maybe that's where he got the idea...
...on at 2 minutes...off at 21:30 in the video below...
Line boring and Bore welding Caterpillar D10 Dozer push arm | Sir Meccanica WS2 - YouTube
...on at 2 minutes...off at 21:30 in the video below...
Line boring and Bore welding Caterpillar D10 Dozer push arm | Sir Meccanica WS2 - YouTube
magneticanomaly
Titanium
- Joined
- Mar 22, 2007
- Location
- On Elk Mountain, West Virginia, USA
I like his trick of using shims to control depth of cut. Boring bar looks a little long and wiggly, though, and i would not trust tack welds to hold hte workpiece..
Does anyone recognize the part he is working on?
Does anyone recognize the part he is working on?
Greg Menke
Diamond
- Joined
- Feb 22, 2004
- Location
- Baltimore, MD, USA
My objection to the welding is only insofar as no protection for the ways from slag etc. Since the workpiece was otherwise resting on the carriage maybe they got away with tack welds because of light cuts- seems like a good bit of chatter even so.
I was hoping they'd show some kind of sleeve being fit in the bore. Bronze might be pricey, maybe a mild steel bushing slip fit and welded in place, hope for enough grease to keep it from galling out too quickly?
They did, eventually, but then went on a ramble around the shop that I did not understand (I had the sound off).
I looked for the welder ground, but did not see it. Looked like the usual bad idea.
Also at the later part of the boring, it looks like the carriage is wiggling around. It's apparently not the camera, as the headstock does not seem to move. Looked like the machine was beaten pretty badly, and could use a crossfeed lock.
Spruewell
Hot Rolled
- Joined
- Sep 8, 2015
- Location
- Northern California
“School won’t teach this” thank goodness. Good for him for working with what you got and getting the job done, but what was the bore diameter he was shooting for? I guess it doesn’t matter for a pizza oven door. Shimming the bar like that is pretty unreliable. He had the three jaw chuck held in the 4 jaw, he could have used the 4 jaw to make diameter adjustments instead of random shims.
john.k
Diamond
- Joined
- Dec 21, 2012
- Location
- Brisbane Qld Australia
Once a nice Colchester......dunno how the heavy scoring on the tailstock ram affects thing......looks like it may be a result of striking a welding rod on it......The part looks like the top of a bone boiler or something like that ,where the pivot could get very loose before fixing........In the background there are some reasonable machines....IMHO,just another made for Utube primitive repair.
john.k
Diamond
- Joined
- Dec 21, 2012
- Location
- Brisbane Qld Australia
Incidentally,if you are going to make one of these primitive repair videos,hire some extras to squat in the dirt and give the scene authenticity.
Greg Menke
Diamond
- Joined
- Feb 22, 2004
- Location
- Baltimore, MD, USA
Line boring a workpiece on the carriage of a manual lathe is an old technique, thus relevant.
...he made a cast iron sleeve for it...
Spruewell
Hot Rolled
- Joined
- Sep 8, 2015
- Location
- Northern California
That was more like a horror flick. I would congratulate him for doing the job then fire him for destroying the lathe. That is why some shops can’t have nice things.
52 Ford
Stainless
- Joined
- May 20, 2021
What I've noticed with a lot of shops in Asia and the Middle East is that they tend to work on the ground. No tables. Saw a shop making some fancy wooden doors. They'd stand up, go use a piece of equipment, then bring it back over to an open area of the shop pop a squat and start working in the middle of the floor again. Bare foot, of course.
Sent using Morse code on - .- .--. .- - .- .-.. -.-
Sent using Morse code on - .- .--. .- - .- .-.. -.-
Laverda
Cast Iron
- Joined
- Mar 24, 2014
- Location
- Riverside County, CA
The most amazing part of the video was the fact he actually had shoes on!
neanderthal mach
Hot Rolled
- Joined
- Dec 18, 2008
- Location
- princeton b.c.
Definitely not a misnamed thread title :-)
About the only novel item in it was spot welding the roughly centered part to the piece of scrap held in the tool post. Ok he got the job done, but all these make do methods shown in some of these third world country's videos generally leave me less than impressed. It's obviously a commercial shop with enough work sitting around to stay busy. And there always seems to be more than enough time to fiddle fart around jury rigging the set up, tooling and methods instead of just using a bit of that same time building a range of simple between centers boring bars that would save that time, gain better accuracy, quicker, easier tool setting, allow much more rigidity and larger depths of cut on every job like it in the future. Sort of like how we slowly pulled ourselves out of the stone age to begin with. Between centers boring with a lathe sure ain't something new or high tech, and much better could have been shop made using almost scrap material and little cost other than a bit of time. I guess there wouldn't be much need for a video if it was done more logically though. 9/10ths for ingenuity and somehow cheating the laws of physics for tool rigidity, but at best maybe 2/10ths for execution.
About the only novel item in it was spot welding the roughly centered part to the piece of scrap held in the tool post. Ok he got the job done, but all these make do methods shown in some of these third world country's videos generally leave me less than impressed. It's obviously a commercial shop with enough work sitting around to stay busy. And there always seems to be more than enough time to fiddle fart around jury rigging the set up, tooling and methods instead of just using a bit of that same time building a range of simple between centers boring bars that would save that time, gain better accuracy, quicker, easier tool setting, allow much more rigidity and larger depths of cut on every job like it in the future. Sort of like how we slowly pulled ourselves out of the stone age to begin with. Between centers boring with a lathe sure ain't something new or high tech, and much better could have been shop made using almost scrap material and little cost other than a bit of time. I guess there wouldn't be much need for a video if it was done more logically though. 9/10ths for ingenuity and somehow cheating the laws of physics for tool rigidity, but at best maybe 2/10ths for execution.
Joe Michaels
Diamond
- Joined
- Apr 3, 2004
- Location
- Shandaken, NY, USA
We've had some threads here about similar youtubes taken in Pakistani shops. In one youtube, a cast iron diesel engine block from a tractor has some pretty heavy damage. The mechanic repairs it by oxyacetylene cast iron welding. That's the short description. The preheating and maintaining of heat in the block during welding was done using a fire on the ground surrounding the block. The fuel for the fire was dried cow pies (dried manure). At least one cylinder's wall had a good chunk taken out of it, and some cracks and chunks out on the top deck surface of the block. The mechanic was using cast iron rod and flux with an oxyacetylene torch. As the torch got too hot and evidently must have 'flashed back' into the torch, the mechanic dunked the torch into a handy bucket of water. This went on continuously as he welded the block. He evidently got a weld which was machineable, some porosity evident in the youtube, but the block was re-bored and re-decked.
Pakistani youtubes are inspiring and also can make a believer out of most people. Namely, the Pakistanis work in minimal clothing, no real protective gear, and at least the mechanics in the youtubes have two good eyes and no visible impairments. They work with beat-up machine tools, seem to have iron foundries on every block, often next to disparate businesses such as kebob stands. They rebuild stuff we'd scrap. My reason for my reference to 'make a believer out of most people' is based not only on the working conditions in the Pakistani machine shops, truck repair shops, foundries and similar, but on their heavy trucks. The Pakistani roads are more like goat trails, often wending thru steep and snaky mountain passes with deep potholes, rockslides and washouts being more common than not. The Pakistanis seem to continuously repair and rebuild and modify trucks. The repairs and modifications they do to heavy truck frames, and the repairs they do to suspension and brakes would never be allowed on US roads. Taking trucks in the condition the Pakistani trucks are in, running them way overloaded on marginal tires over those goat trail roads is a leap of faith. The repairs or what they call a 'rebuild' often consists of washing parts in a dented pan of dirty gasoline or diesel fuel, and re-using the old bearings and seals. If gear teeth in truck transmissions or rear ends are chipped or broken off, the Pakistanis simply stick weld gobs of metal onto what's left of the gear teeth. They turn the OD on one of their belt-headstock lathes (these seem to be the most popular design there- a vee belt headstock with back gearing). Once the OD of the gear is turned (never mind how true to center it is), they take an angle grinder with thin wheel and freehand grind the welded repairs to what seems like original tooth geometry. Aside from the issues with gear tooth geometry, I have been wondering about gear tooth hardness and whether a stick weld (often run with a locally made AC 'Buzz Box" welder- another set of youtubes shows curbside guys winding the transformers for these welders) run with a carbon steel electrode will crack away from the kind of alloy steel used in truck tranny and rear end gearing.
As soon as a truck is repaired or rebuilt, before it leaves the shop, the bigger deal is the 'truck art'. Ornate designs, pictures of birds and other animals, and writing in Pakistani (or maybe Arabic ?) calligraphy is painted on every available surface of the truck. An extended front bumper with assorted ornamentation is also built on, and often, a wooden door is used for cab access. The Pakistani truckers are a two man team- an apprentice driver is carried to walk in front and determine the best route on some of mountainous roads, as well as to help with repairs.
The Pakistani foundries are a whole other topic. They are the original and most direct recyclers. Scrap metal from any shop in the neighborhood is melted in the foundries, scrap from metal stamping plants and anything else goes into the charges into the furnaces. The molders work barefoot and ram the molds by tromping on top of the molding flasks with their bare feet. No safety equipment, working barefoot or in sandals even when pouring molten iron (or more likely semi-steel given what gets charged into the furnaces).
In Pakistani forge shops, chunks of old ship's anchor chain links are re-forged into sledge hammer heads. Forging furnaces are fired on waste oil with home made burners. The forge shop guys toss chunks of orange-hot steel around the shop, from furnace to the men at the hammers.
I doubt there is anything like local building codes, zoning, let alone anything like OSHA or child labor laws. It is common to see young boys who would be in grade school or middle school in the USA working in all of these Pakistani shops.
The thing to bear in mind when watching any of these youtubes is the people in those youtubes are making-do with what they have at hand. Rather than bitch about what they don't have or wait for some do-gooder foreign aid organization to come along, these people are doing for themselves. These people are not ignorant about what the modern world is doing- they all have the latest in cell phones and often can be seen taking pictures of the work. They have internet access, so are well aware of what more developed countries- even regions in their own countries- are doing.
ANother set of youtubes is made by a young lady in CHina. She seems to be an ace at manually rewinding electric motors and generators. She lives in some mountainous region, and some of the people do not have grid power. They rely on one-lung slow turning diesels belted to generators. In one memorable youtube, this young lady packs about a 15 Kw iron frame 2 bearing generator on her back to deliver it after repair. She puts a packstrap around her forehead and hoists the generator in a packbasket on her back and walks some distance with it. Her tools consist of a claw hammer with a whittled handle, wire cutting pliers, a multimeter, compressor and sandblaster, and an oxyacetylene torch. In one episode, she rewinds and repairs a buzz box welder and puts it to good use.
As I've said before, it is easy to throw rocks at people who use methods that are crude and unsafe by our standards. Looking at the bigger picture of where they live and what their lives are like, these people should serve as an inspiration to those of us fortunate enough to be living the lives we are born into. When some young would-be hotshot starts bitching that their welding shield either does not have a big enough field of vision, or lacks the wild graphics that the next guy's shield has, they need to take a look at some of these youtubes. I've seen and heard how some people (aka 'prima donnas' or spoiled brats who would not make a pimple on a real mechanic's ass) carry on about stuff that has no bearing on their own lack of skill and lack of mental faculties. People in these youtubes are showing they are using their God-given gifts to figure out how to get a job done with what is at hand and not complaining or finding reasons not to. That, to me, is the over-riding and most important thing.
Pakistani youtubes are inspiring and also can make a believer out of most people. Namely, the Pakistanis work in minimal clothing, no real protective gear, and at least the mechanics in the youtubes have two good eyes and no visible impairments. They work with beat-up machine tools, seem to have iron foundries on every block, often next to disparate businesses such as kebob stands. They rebuild stuff we'd scrap. My reason for my reference to 'make a believer out of most people' is based not only on the working conditions in the Pakistani machine shops, truck repair shops, foundries and similar, but on their heavy trucks. The Pakistani roads are more like goat trails, often wending thru steep and snaky mountain passes with deep potholes, rockslides and washouts being more common than not. The Pakistanis seem to continuously repair and rebuild and modify trucks. The repairs and modifications they do to heavy truck frames, and the repairs they do to suspension and brakes would never be allowed on US roads. Taking trucks in the condition the Pakistani trucks are in, running them way overloaded on marginal tires over those goat trail roads is a leap of faith. The repairs or what they call a 'rebuild' often consists of washing parts in a dented pan of dirty gasoline or diesel fuel, and re-using the old bearings and seals. If gear teeth in truck transmissions or rear ends are chipped or broken off, the Pakistanis simply stick weld gobs of metal onto what's left of the gear teeth. They turn the OD on one of their belt-headstock lathes (these seem to be the most popular design there- a vee belt headstock with back gearing). Once the OD of the gear is turned (never mind how true to center it is), they take an angle grinder with thin wheel and freehand grind the welded repairs to what seems like original tooth geometry. Aside from the issues with gear tooth geometry, I have been wondering about gear tooth hardness and whether a stick weld (often run with a locally made AC 'Buzz Box" welder- another set of youtubes shows curbside guys winding the transformers for these welders) run with a carbon steel electrode will crack away from the kind of alloy steel used in truck tranny and rear end gearing.
As soon as a truck is repaired or rebuilt, before it leaves the shop, the bigger deal is the 'truck art'. Ornate designs, pictures of birds and other animals, and writing in Pakistani (or maybe Arabic ?) calligraphy is painted on every available surface of the truck. An extended front bumper with assorted ornamentation is also built on, and often, a wooden door is used for cab access. The Pakistani truckers are a two man team- an apprentice driver is carried to walk in front and determine the best route on some of mountainous roads, as well as to help with repairs.
The Pakistani foundries are a whole other topic. They are the original and most direct recyclers. Scrap metal from any shop in the neighborhood is melted in the foundries, scrap from metal stamping plants and anything else goes into the charges into the furnaces. The molders work barefoot and ram the molds by tromping on top of the molding flasks with their bare feet. No safety equipment, working barefoot or in sandals even when pouring molten iron (or more likely semi-steel given what gets charged into the furnaces).
In Pakistani forge shops, chunks of old ship's anchor chain links are re-forged into sledge hammer heads. Forging furnaces are fired on waste oil with home made burners. The forge shop guys toss chunks of orange-hot steel around the shop, from furnace to the men at the hammers.
I doubt there is anything like local building codes, zoning, let alone anything like OSHA or child labor laws. It is common to see young boys who would be in grade school or middle school in the USA working in all of these Pakistani shops.
The thing to bear in mind when watching any of these youtubes is the people in those youtubes are making-do with what they have at hand. Rather than bitch about what they don't have or wait for some do-gooder foreign aid organization to come along, these people are doing for themselves. These people are not ignorant about what the modern world is doing- they all have the latest in cell phones and often can be seen taking pictures of the work. They have internet access, so are well aware of what more developed countries- even regions in their own countries- are doing.
ANother set of youtubes is made by a young lady in CHina. She seems to be an ace at manually rewinding electric motors and generators. She lives in some mountainous region, and some of the people do not have grid power. They rely on one-lung slow turning diesels belted to generators. In one memorable youtube, this young lady packs about a 15 Kw iron frame 2 bearing generator on her back to deliver it after repair. She puts a packstrap around her forehead and hoists the generator in a packbasket on her back and walks some distance with it. Her tools consist of a claw hammer with a whittled handle, wire cutting pliers, a multimeter, compressor and sandblaster, and an oxyacetylene torch. In one episode, she rewinds and repairs a buzz box welder and puts it to good use.
As I've said before, it is easy to throw rocks at people who use methods that are crude and unsafe by our standards. Looking at the bigger picture of where they live and what their lives are like, these people should serve as an inspiration to those of us fortunate enough to be living the lives we are born into. When some young would-be hotshot starts bitching that their welding shield either does not have a big enough field of vision, or lacks the wild graphics that the next guy's shield has, they need to take a look at some of these youtubes. I've seen and heard how some people (aka 'prima donnas' or spoiled brats who would not make a pimple on a real mechanic's ass) carry on about stuff that has no bearing on their own lack of skill and lack of mental faculties. People in these youtubes are showing they are using their God-given gifts to figure out how to get a job done with what is at hand and not complaining or finding reasons not to. That, to me, is the over-riding and most important thing.
