Rare Scrapyard Finds! Repair-A-Thon!
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- เผยแพร่เมื่อ 27 ก.ย. 2024
- / tpai
paypal-donations: inventordonations@gmail.com
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My last video:
• DIY Motor Speed Contro...
Other Repair-A-Thons:
Episode 1:
• Scrapyard Finds Repair...
Episode 2:
• New Scrapyard Finds! R...
Episode 3:
• More Scrapyard Finds! ...
Episode 4:
• Even More Scrapyard Fi...
Episode 5:
• Many More Scrapyard Fi...
Episode 6:
• Great Scrapyard Finds!...
Episode 7:
• Awesome Scrapyard Find...
Episode 8:
• Amazing Scrapyard Find...
Episode 9:
• More Beautiful Scrapya...
Episode 10:
• Huge Scrapyard Finds! ...
Episode 11:
• Terrific Scrapyard Fin...
Episode 12:
• Beautiful Scrapyard Fi...
Episode 13:
• New Amazing Scrapyard ...
Episode 14:
• Incredible Scrapyard F...
Episode 15:
• New Great Scrapyard-Fi...
Episode 16:
• More Amazing Scrapyard...
Episode 17:
• Scrapyard Finds Galore...
Episode 18:
• Scrapyard Finds to spa...
Hey guys. This is the 19th episode of this series. All other episodes are linked in the video description right under the video. In case you want to help with a donation, here are two ways to do that:
patreon.com/tpai
paypal-donations: inventordonations@gmail.com
Please put the names of the repaired goods into the description so other people trying to repair them can find your video and fix similar problems on those machines! :)
3:01 oh god you found the arm breaker! There is a higher chance that that drill will break your wrist/arm than to kill you by electricity ! Those drills are so powerfull that they can swing a grown man.If i havent seen it i wouldnt beleave it .In a shipyard a 2 men were drilling a ships deck made of stainless steel sheet metal ,it was 10mm thick but the drill was 30mm.Now they did drill the pilot hole and they did go 25mm then 30.But something happened and drill got jammed and drill knocked guy that was holding it on the floor.Nothing bad happend to him ,nothing was broken except the pride ,but after that they used 2m long pipe to hold it.
The reason why they convinently put 3/4 NPT water pipe is so ,you can go to a hardware store and buy any length you want.Whatever you do BE CAREFULL with drills like those.
Also building a drill stand ,simple out of U channel or square tubing would be a great idea,those things have more power than any cheapo drill press.Wish i had one of those...
Thanks so much for these videos. I love seeing the old tools brought back to life and it is very inspiring.
FWIW, if you want to use LED for task lights, it *REALLY* pays off to spend a little more and get high CRI LEDs for light that is close to sunlight in quality. I used the ones that are in the DIY Perks lighting tutorial videos and will never buy any other strips again!
If you get a piece of polarizing film out of a dead LCD screen and put part of it on the magnifier and part over the LEDs--turning one 90 degrees--you won't have to worry about glare anymore. (I used this idea with my camera lens and flash to take straight-on pictures of an aquarium. There was *plenty* of light, but no reflection off of the glass.)
The company who made the thread cutter send manual free of charge and are very nice. You try to replace the battery in an iPhone apple basically think your evil.
Yes we brake their business model, obsolescence apple that is.
It is just one of the many reasons German Engineering still carries a lot of positive vibes.
Lots of people will damage their iPhones trying to replace batteries and then cry for warranty repairs once they break it!
And that is exactly why there are alternatives like the Fairphone. Even no tools required to swap the battery (for model 2. for model 3 don't know actually, but guess it wont be very hard)
@@algemeennut6683 No thanks, iOS is awesome. You can keep your Commiephone.
You have great wisdom for such a young man. Your comment that the most valuable thing you can do is to learn a new skill is spot on and yet so overlooked today. I am a mechanical engineer and have spent the last 42 years designing machine tools, primarily for the automotive and aerospace industries. My design philosophy has always been to keep things as simple and robust as possible, and I appreciate seeing that in many of the tools you refurbish. That seems to be a common design criteria in German designs. I was fortunate enough to work many years with with a mechanical engineer who grew up in Germany during WWII. Klaus came to the U.S. in the early 50's and was the most brilliant engineer I have ever met. I learned more from him then I ever did in my formal education. Today I see so many people, particularly young people who have no concept of how things work and sadly, no desire to learn. Keep up the great work.
War conditions are very effective in rooting out weak, overcomplicated and expensive designs. No wonder it made great engineers even better!
That drill looks like it would be a handful, I was worried when you were drilling the metal that you were going to get your teeth re-aligned by the handle if it got caught on the workpiece. Great video as always!
At work we have a large drill similar to this. High torque, no clutch. I can't tell you how many times it has taken me for a ride, or twisted my wrists. The main issue is if it catches your first response is to tighten your hold (gripping the trigger tighter). You have to be strategic with your hand placement and wrist position, much like riding a dirt bike up a steep hill. With great power comes great responsibility :)
@@eclsnowman Yeah, my dad's got one at work, it's broken wrists before.
@@emeltea33 My father had one like that and I can remember him drilling holes in a concrete slab and yelling for help because the bit had jammed and he was running in circles with the drill, thankfully we got to the power outlet before he was badly injured.
I had a drill with high torque like that almost rip my thumb off. It took about 6 months for my thumb to get back to normal. Everybody I know who uses them regularly has a similar story. I'm VERY cautious around hand held drills now.
Lost count how many times one particular drill got away from me. It either pulled the plug out of the wall socket or literally ripped it's own power cord out. Only use stuff with a clutch these days.
The scrapyard a thons are the best. So cool to see these tools resurrected.
Word to the wise, when drilling large diameters, drill a pilot hole first at least the size of the larger bit's chisel point....
Nah just find the torquiest drill you've got and hold 'er one handed like it's a kill shot.
@@ayitsyaboi That only works if you also hold it sideways like a gangsta and scream the magic words "straight outta Compton"
Just as a safety reminder the left thread nut must be on the left side so your rotor is probably flipped arround. This way the wheel can loosen itself.
Adding the handle and speed controller to that old drill was really cool. What a great way to resurrect an old tool.
Greetings, from Bridgeport Connecticut
Chuck Norris is still wondering what happend to his dremel...
😂😂😂😂
Chuck Norris doesn't need a Dremel, he just chops things with his bare hands. And sands with his beard.
Not sure what it is... the voice over, or the video style, or the good tools. But I keep rewatching these episodes over and over again. I greatly enjoy your work.
Instead of another drill press, you could use this big Fein drill to build a mag-drill. Cool idea, ha?
Had the same suggestion. Could make for an awesome Video.
Maybe with Microwave Transformers for the magnets.
@@philippsaure7545 - not sure if those magnets would be strong enough. I'd imagine some neodymium magnets arranged in some sort of lever arrangement inside a fabricated base would work?
@@samvalentine3206 Right, similar to how magnetic base (e.g. for dial indicator holder) works.
Similar to: th-cam.com/video/n9tZIFfM14o/w-d-xo.html
@@samvalentine3206 You are most likely right. Maybe such a configuration could even save some space and increase the usability of such a device.
Think that's a bit of a heavyweight
Hallo from Connecticut! Bridgeport is a post-industrial city in a rough spot since most manufacturers left, sometimes it already feel post-apocalyptic there. Very funny to see a Bridgeport part with Ein/Aus written on it!
One thing I appreciate about these videos, is that unlike AvE, there's no yells about "Focus you F**K!" because he knows how to manually focus on a close up object :)
Born and raised in Bridgeport Connecticut then Stratford Connecticut and now I'm in northern New Hampshire! So here's your shout-out!
When a company takes good care of those who have their equipment, as in this case they send you manuals and respond to you, you have to buy them or advertise them, there are companies that give pleasure and others that better erase them from the planet and never recommend them
I totally agree. One example: COTO relays’ applications support is in Germany and they were excellent, even though I didn’t even buy anything from them - just asked about surplus parts I got. If you need reed relays, I highly recommend them. It’s also one of the few companies that stayed private in the US and continue doing a great job and are all hardcore engineers.
@@absurdengineering My example in computer related, for Years.. GENIUS answer very good, Noctua from Austria incredible quality, expensive but the best and they give you gift adaptors if you have a product, some are craps when you need something.. like EVGA with warranty, if you buy most expensive Powersupply from EVGA has 10 years warranty.. but in Latin America they reduced to 3 years... why? they pay more than other countrys and lost 7 years of warranty... in power tools BOSCH removes security Switch in angle grinder in Latin America .. why? is a matter of life and death and again we pay more price products..
@@nopochoclos Speaking of computer hardware, you reminded me of my positive experience with Cherry GmbH. I carelessly damaged some of the key-caps on my Cherry Stream keyboard (which is an excellent keyboard for office/productivity use). I emailed them to ask whether they sold replacements, and I made it clear that the damage was my fault. The next thing I knew, they had removed the relevant key-caps from a donor keyboard they had lying around their office and posted them to me free of charge in a neatly hand-addressed envelope. Really impressive.
@@patrickwigmore3462 Interesting..
The pipe thread cutting machine is the catch of the day. These machines don't come cheap. This one is of a very good design too.
Man your intro to the foundational principles behind these videos is excellent.
RIP the chisel edge, that old wheel chipped it at @27:14. You can notice it start to chip away on the left hand side almost at the edge.
A "fine" drill project.
I installed a motor control into a project box back in the 80's,and can now control fans,lights,etc.
Welcome from Bridgeport!
(Very close by, actually)
Bridgeport is probably best known for the Bridgeport milling machines and the Moore jig-bore series of precision machining centers.
The city was also the hub of firearm and ammunition manufacturing in the 20th century.
Majority of the rounds fired or dropped in WWII came from this place.
For the Fein drill: maybe a magnetic base?
I love your opening philisophical musings. Its unlikely that the bulk of the "throw away society" will ever even watch these videos, but you'll probably convert some of the people who are curious but are afraid they don't have the skills. Keep up the good work, very entertaining and well paced.
The bench pipe threading machine brilliant , great video
We have a Bosch twin handle drill at work like the one you repaired.
I've had a few fights with it ;-)
I call it the wrist breaker!
Not too long ago I was enlarging a hole to 19mm and the drill bit snagged, before I could let go of the trigger, the drill bit bent! I had to buy a replacement one from eBay and never told anyone LOL
Now you did, and to everyone 😂
@Ultimate Handyman: So you're admitting you're not such the ultimate handyman after all, hunh? 🤣
It reminds me of the first drill I bought. It was a 1/2hp Craftsman with two handles like that and a third D handle in back. Max speed was only 600rpm because it was meant for steal and concrete. I put it on lay-away and bought it with my paper route money. 35+ years later I still have it but the variable speed switch has cracked through.
Those big drills, I used to have a few older ones like that. I mainly used them for mixing paint, concrete, thinset, plaster or anything heavy like that. They work very well for that type of stuff.
I have one branded wolf , he was brave holding at face height if that drill suddenly bit .
I’m surprised the drill didn’t fling you around the room.
It's ALWAYS a good time when a scrap yard repair-a-thon drops.. 😁
A neat option for a grinder that has parts missing on one side, is to fit a tapered spindle adapter ("pigtail") over the existing spindle, and fit polishing mops for metal.
+GF+ has a presence in the USA as well, i was once certified for use of their IR high purity plastic pipe welding equipment. Excellent product, training and support. I am not only jealous of the threading tool but also that cool magnifier. The dimmer is very nice but I, personally, would prefer the daylight spectrum fluorescent light over that poor yellow LED spectrum.
Not from Bridgeport, CT, but I am from New Britain, CT, hometown of Stanley Tools! Love the videos. I’d credit this channel as well as the “My Mechanics” channel for getting me excited and interested in tool and machine restoration. Can’t wait for the next video!
Do make a video of different applications of the TL494! As a software person, it is always interesting to see how software can be replaced with hardware.
you already have a foundry, you can melt raw material from the scrap yard and reuse them. Aluminium for example, very easy to melt and cast into mold shapes that you need for your projects
Scrapyardrepairs! Simply the best way to live a prosperous life!
Vielen dank! I have had enough of working for tech companies and I am trying to get assigned to one of the front-line refugee stations to work helping people. I have converted a van into a living area/workshop and I hope to be putting the skills you are teaching to good use!
thank you from a fan in Texas.I really enjoy your channel and I like the small but important history lessons of the industrial development of our world. Much respect!
I was born in Bridgeport ct and almost dropped when I heard you mention it. We called it Bridgepit lololol. It use to be a nice port city but in recent years, I've heard it run down.
I wish my local scrapyard had such good things. All they have is broken parts of cars built not to last, and plastic junk.
The Fein drill reminded me of an old vintage Bosch GD25 I rescued recently, no clutch, no soft start, but bags of torque and easily rips itself out of your hands if you're not careful. The first replacement power cable I put on was trashed on its first big job, I've since added another handle on the top where it would've had one originally and treat it with a bit more respect!
Greeting TPAI! Not in Bridgeport, Connecticut but in a town some miles to the north west. I used to work in Germany in the 90's. Was in Berlin in 2019 couple months before covid and had a great time, as usual!
A trick with those 12V LED strips is that you can put them in series if you've got a 24V power supply. The positive of the first strip connects to the +24V supply, the negative of that strip then connects to the positive of the second strip, and the negative of the second strip connects to the ground/0V of the supply. Both strips do need to be the same size though, so there's not too much current going through one strip.
I lived in Bridgeport for a few years. They used to call it BridgePuertoRico it wasn’t until like was older that I learned that was meant as a slur. I always thought it was because of all the awesome Puertorriqueños culture there.
At 2:20, the grime on this machine is chocolate mixed with machine oil. It was probably used in a biscuit or chocolate factory. I used to repair these machines at a chocolat factory (Neuhaus) as a student during the holiday.
Well, if your buddy ever needs to drill holes through an I-beam, he knows where to look:) That drill looks like a real beast - maybe it's time to build a mag-drill.
That Fein drill is a beast of a drill! And the desk lamp is beautiful.
Be careful with those big drills! My dad used to use one to bore big holes out of big oak beams in old buildings for restoration work, he said that one time the drill caught in the hole and the second handle came round and knocked him out cold!
these repair-a-thons are my favorite video series on youtube by far. most of the large power tools i use in my shop i got because someone else first threw them away. either they were given to me for free, i was paid to haul them away during a clean up job, or i bought them cheap at an auction and repaired or modified them myself to suit my needs. i have also designed and fabricated many pieces of equipment myself such as a hydraulic press, a manual tire changer, a sandblasting cabinet, a small paint booth, a hydraulic lift table for repairing motorcycles/atv's/riding mowers, an engine hoist and stand, a lift boom for my tractor, and a coal fired blacksmithing forge. all were made from salvaged materials and/or scrap steel. i'm self-employed, and i earn a living fixing, building or destroying whatever someone will pay me to fix, build or destroy, and have done so for over 26 years. when i was young, my grandfather told me to learn all i could, about everything there was, and i would never be without work. best advice i ever got.
My favorite series on TH-cam. Keep it up, sir. Much respect from Palm Beach Florida
I feel like too many people forgot that sometimes repairing quality tools is the better option instead of throwing it out and buying something new
Great job as usual. I love the scrapyard shows. You find such amazingly good stuff! The magnifying light was a real gem! For the old bench grinder, I would have left the guard off the side that was missing and installed a wire wheel instead of another grinding wheel. A bench mounted wire wheel is very useful.
14:35 - THIS!!! is fantastic. Must have, best find of the month for you. I'd pick this up in an instant if I had the opportunity.
When I was a apprentice pipe fitter we used a GF threading machine. I still remember how hard it was to thread two inch steel pipe.
That big drill with the #2 Morse taper might be a good candidate for a mag drill.
I love those German optical manufacturer logos! Beautiful. Just like the Zeiss Ikon logo on my old cameras
I noticed several old cast iron radiators. I had a DYI-crazy friend who built a huge hot tube in his house. He put six of those old radiators outdoors, connected to the water supply. Underneath them he installed gas burners (natural gas was cheap back then here in Texas). The water flowing through the radiators got heated and he could regulate the temperature by adding or removing more gas to individual radiator burners. It was a pain to get set up, especially considering the huge amount of water it took to fill his indoor 'pool'.
I think you could make a great solar water heater, with no need for electric solar panels. Just set a bunch of old radiators out where they can usually absorb sunlight. Once the kit got warm, you would open a pump or a gravity flow. You could start with them empty or already full of water. It would be best to allow the flow to go downhill to be able to empty the radiators when needed. Adding rock or gravel fill close around the radiators might increase their energy retention - or help them retain the night's cold..
Anyway, thanks for the always great videos. You should make an opening page with your neat quote about developing new skills rather than hoarding expensive hardware.
In Albany, Oregon we have Burcham's Metals. Great yard to walk around looking for stuff. From farm stuff to high tech, and everything in-between. They sell a lot by the pound.
As far as electrics inside a steel tube is concerned Plast-Dip is a very easy way of ensuring that every conductive surface is completely insulated and it actually have a very good electrical insulation rating and it is one of it's intended uses(it gets harder with age so the first week+after applying it will be more delicate and not at full strength).
Love that old grinder restoration. I scored one from my local scrap yard in great condition and made a stand for it from other scrap. Now I just have to extract the big lathe sitting in the junk. I don't like my chances !
I love watching your videos. Its like there is so much at scrap yards that can be fixed with just a little fix here or there and its up and running or even be used from something completely different. Just like that rebar its like why do they junk it when its so darn expensive to buy it brand new. I had an Amish naighbor that had and old rear tin tiller he took the motor off to use for a round his home. He gave me the old tiller. I bought a new motor bell housing and I have used it every year so fare for my garden. Brand new the tiller is worth 5 grand and all I spend on getting it up and running like new was like less than 300 bucks.
For drilling steel that was perhaps three times the preferred rpms. High speed drill doesn't really mean what most people think.
Pi x d x n over 1000 equals meters/min (25 for hss, d in mm)
n is then the required revs.
I learn something every time I view your channel. So in return, I share with you. I work in an Emergency room, for many years. Those blades you used to remove the sealer. Don’t cut towards yourself. They will go right thru your hand and to the bone. I have seen this so many times. Thank you for sharing what you know.
Keep making these video's untill the scrap yard runs out of scrap. Then find another scrap yard.
Love your videos mate. I have a challenge for you... The theme you have of a post-apocalyptic landscape, and a society trying to rebuild and reuse 'old-world' tech is excellent, but one vital component missing from your examples so far is energy. The next time you're at the scrap yard, maybe you can find pieces you can put together to harvest energy from wind, hydro or... solar. I know this depends a lot on availability of parts and geography... But it would be interesting to see how one might build their own energy generation, storage and distribution from scrap.
My dad uses rebar for his farm, tomatos like to creep up on the rebar so it's pretty good to make structures for the plants to grow on when making the farm, though at the end of the year when the season is almost over it's a paint to dismantle it back again.
They're pretty cheap and last much longer than wood sticks though
That is a power head for a mag drill, at least that is what it's setup for.
I'm someone who is very ignorant about mechanical and electrical engineering, it always amazes me how you can explain things in a second language than many can in their first.
I could do with that magnifier to read instructions that always seem to be in 6 point text these days.
Just wanted to say thank you for your wonderful videos. I also love to repair things. I hope you have a wonderful person.
Instead of building a drill stand, you could also just mount that vise at about knee-hight, and then have a much better drilling experience.
Hello from Connecticut. We got to visit The American Precision Museum in Windsor Vermont. They have the number 1 Bridgeport Milling Machine. Love this channel.
I would like to know more about the dimmer circuit that you described, and Thank you for so much valuable information!
For that handle with the variable speed control for the drill a rubber hand grip would insulate your hand from the metal also using a thin plastic liner on the inside of the pipe would help as well which could be made from a soda bottle or similar bottle of the same thickness and attach to the inside of the pipe with adhesive as well as filling the pipe with the adhesive to keep everything from vibrating and shorting out
Nice haul, nice job.
Thats a neat pipe threader, as a person who's threaded a lot of gas pipe, Im surprised I've never seen a manual one, pretty neat!
Totally insulates the whole circuit board including the heat sink!!
Thanks for taking the time to make this and to considerately place the advertisements. It really enhanced the video. Weird that so many other people just stick them in just any old where or don’t think about where they show up - it can really break up the flow of an otherwise nicely produced video. Greetings from Norfolk, UK
I agree with your "get out of the skip" message, I once was walking up to one, about to launch a fairly heavy 240V motor in, but just caught the edge of something moving. Thee was a twit in there and I was about to brain him.
Hello, I was born and raised in Bridgeport, Connecticut. I don't remember Gaynor, but my father worked for General Electric there. Things in Bridgeport have not gone well in many years. A quick look at bridgeport on TH-cam shows many shootings. So sad.
Tom
Elegant work on the drill restoration/motor controller and PWM-controlled dimmer, and the grinder!
Yes, go full speed ahead on more of this!!!!
Hello, I enjoyed your video.
I have a comment about the switch for your magnifier lamp. The old switch is totally usable for an on-off application. Those old switches have an "extra" position if you hold down the "on" button to connect the "lamp starter" to the cathodes for pre-heating. If you remove the old wiring, it may be wired to function as on-off. I did this for a florescent to led modification on my desk lamp and there is no issues.
Nice magnifying lamp! You made it better. Good job.
It's wild to see Connecticut show up in a video shot in Germany. I grew up in Connecticut, though not in Bridgeport. There was so much industry in Connecticut until around the late '70s or early '80s and now much of that history is lost to time. Connecticut is full of apartment complexes that used to be mill buildings. Pretty cool to see this slice of Connecticut industrial history, though, and in a high-quality product made in Germany.
Been waiting for so long for TPA to give Bridgeport a shoutout.
Thank you for your help !
Here is a tip to help you
The #1 penetrating fluid "U.L."
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I'd be tempted to mount the light under a cabinet with a handy switch for quick inspection of parts.
I have not found yet a scrap pile like this in the US. What we specialize in is wet garbage dumps and plastic burning.
I kind of want to see that turned into a mag drill, or mobile drill press. Awesome piece of machinery! I wish we had actual scrap yards, they are all commercialized businesses.
Perhaps set it up for mixing plaster or some similar material. Often these are set up with powerful magnetic stands for drilling holes in beams etc.
If you are mounting a grinding wheel you should use a paper spacer to avoid wheel cracking!
TL494? Yes please! Great video, as usual. Thanks. Mike, UK.
Its the first time i have seen a right hand nut on a left wheel. Its usually a left hand nut to prevent loosening when load is applied to the wheel
I am huge fan of repair-a-thon😍. I like all old rare tools but you should add white light at magnifying lamp no yellow 😊
Love from india 🇮🇳
The LED upgrade was interesting ... I hate fluorescent lighting.
remember to lock the exposure on your camera when showcasing a light dimmer :)
More on the TL94 please, I hate the idea of going to programmable controllers for simple applications
Something like the UC3525A would be easier to work with in combination with power MOSFETs. The ancient TL494 was designed with power bipolars in mind.
@@NiHaoMike64 Thanks, exactly the sort of information I'd like to learn!
This is so cool.
I hate that the scrapyards in my area will not sell anything to regular people.
They cut up whatever comes in and sell it by the train car load.
I would pay more per pound and they would not have to cut it up.
Oh well, I can enjoy your videos.
Glad to see all this great equipment getting saved.
Thanks for the video - I really enjoyed it. A word of warning about the big drill. Be very careful of getting your head in the way of those handles - if the bit jams the drill will rotate and do you some serious damage - I speak from painful experience!
Me too gained some experience by a sudden increase of moment in a handle towards my head. Thankfully I wore ear protection so there have been some major dumpening. Was quite a lesson though. Some newton-metre are simply irresistible.
Love the drill, I think I'd make my own mag mount for it and would make a much more versatile drill and would make a great video.
This is genius. Another drill press is essentially a conversation piece. But a mag drill would be a useful tool. TPAI you should do this!
Absolut geiler Gewindeschneider :-D Faustregel > pro 2 Umdrehungen >1/2 Umdrehungen Zurück zum Spänebrechen. Bei Innengewinden bricht einem OHNE auch mal gerne das Werkzeug dabei ab... . Öl sollte immer verwendet werden! Es lohnt sich den ganzen Vorgang mal nachzulesen ... . Prima Kanal Mann! Ich liebe die Schrottplatztouren,- Habe das früher viel gemacht für Werkzeug usw...
I had a florescent desk lamp with a switch that worked like that as well. I think it operates that way because of the strike/run properties of florescent lamps.
I cannot get enough of these
Dang what fun.. I wish I had a scrap yard close to me.. Little towns seem to farm out there scrap to the bigger places I guess.. Carry on!
My guess is that the drill might have been mounted on a base with a magnet,it look like a Portomag drill. I just fond your channel and love it.
Hey that drill is similar to one i used as a young fitter in about 1974 we used it to drill up 1"-25mm dia holes but we fitted a 3/4" BSP [british standard pipe] pipe with about 800mm in length to stop the drill from turning when it dug in. It was a beast which took two men to operate one on the drill and one to hold the end of the pipe . I Am 68 now and use a limpet or Mag drill now , which is a lot less dangeruss.