Metal Lathe Tutorial 22 : Boring! Boring BARS, that is!

[@murraypearson2359]

As a full-time manual metal lathe operator, I endorse this content. It's clear, accurate, well presented; and I observe your blessedly minimal use of The Mandatory Pun. Thanks, Quinn!

[@johndufford5561]

Ingenious, as always. I want to be you when I grow up...

[@aaronmott208]

I absolutely love how you made “The Mandatory Pun” a proper title

[@frederikmare9002]

She is absolutely the BEST!!!

[@earnierosenow9834]

your content keeps me happy , im learning how to walk again with a prosthetic leg a bad car accident took my wife and daughter , the other driver fell asleep at the wheel and died as well, you videos are in a way very calming and i can see a new horizon in machining thanks

[@ScumfuckMcDoucheface]

Indeed, there is a meditative and cathartic facet to machining in general, as well as Quinn's style/vibe. =) I find it helps keep me kinda sorta somewhat a little bit more sane... sometimes.

[@jkalash762]

My condolences and I'm glad to hear you're learning to live with the tragedy you went through. I can relate to how you feel about Quinn and her videos. Some people just give off a natural "glow" about life in general that soothes or brings joy to those around them and she definitely fits in that category i feel like. There's been quite a few times I've had videos playing in the background while I'm working in the shop and Quinn is one of the only ones i don't skip over it it's something I've already watched before. Between the vibe the videos give off and the wealth of info there's a lot of rewatch value.

[@ScumfuckMcDoucheface]

@@jkalash762 yeah i agree well said man =)

[@jkalash762]

@@ScumfuckMcDoucheface thanks! Great username btw, had me cracking up when i saw it.

[@davemason6273]

@@jkalash762 hehehe I laughed out loud too at that user name.

[@jayantmashankar242]

Hi This is Jayant Mashankar. I am a Chemical Engineer. An Expert in Process Equip ment Designer.But my passion was always Lathe and Milling M/C. After being inspired by your tutorials I finally bought a Lathe And a Mill. Now Ihave started using both machines. I am now 63 yrs old.

[@kmet2000]

One minute after publishing - and I was the fifth to hit the like button. So there are more people knowing that this lady rocks and hit like "in advance" 👍

[@peplegal8253]

Jesus ! I'm new to this thing (just bought my first mini-lathe)...and I've been fishing around all kind of videos and tutorials for weeks...and finally found this woman...with the most well explained, perfectly articulated, highly detailed lessons for people like me (total noob). Thank you my lady...I'm devouring your videos.

[@oliverb7897]

Flat-bottomed bars, you make the boring world go 'round

[@pedalcarguy]

I always hit the like button when I start watching Quinn's videos. I have developed a blind trust in her! 😁

[@bobuk5722]

That's being eccentric!

[@rayman6253]

You are the BEST. Love the DETAIL and the CLARITY and the COMPLETENESS. PLEASE DO NOT STOP.

[@rc8rsracer1]

As said before… I’m a full time manual machinist and I approve this method! Well done and well said!

[@brentconnock2513]

Extremely well presented, no lengthy pauses, or "uhms" beautifully done, clearly very knowledgeable! I am certain I will learn a lot from you, thank you!

[@johnapel2856]

I always enjoy the basics videos. They remind me of how much I have forgotten. Or need to learn. Or why I hate something. Or what is the airspeed of an unladen African swallow. Wait, what? Nevermind. Thanks, and Meow to Sprocket.

[@BrianFullerton]

Can't help with that, I only remember the numbers for the European variety.

[@markrainford1219]

Just out of interest. What IS the speed of an unladen African swallow?

[@BrianFullerton]

@@markrainford1219 I don't know! Aaaaaaggghhhhhhh........

[@Dave.Wilson]

I know the airspeed of a fully laden African Swallow if that's any use to you.

[@ExtantFrodo2]

@@Dave.Wilson Doesn't that depend on whether he's rested or just gotten out of working his shift in the mines?

[@gordonodenbark535]

I’m so glad I found your channel. Until last Saturday I had no idea that I needed a lathe but by chance I stumbled over a video made by you and got hooked directly. I’ve never used a lathe and have no clue what to use it for (I’m a desk jockey and shuffle a lot of paper) but I became a believer and hope for an ephiphany because otherwise my wife is going to say derogatory things to me. After I saw your video I was convinced and just waited for the right moment to jump the gun. I didn’t have to wait for long though. My wife had to run an errand and I seazed the moment an bought one as soon as she slammed the door. That’s my modus operandi, it’s easier to be forgiven than to get permission.😂 I missed that you need a lot of tools as well so now I’m waiting for my next opportunity but she’s much more suspcious now so I’ll have to be very careful. I’m a fan and hope that I’ll understand 50% of what you’re saying shortly.😁

[@HoY_82]

It took me many years of watching Kijiji, but I finally got my first metal lathe. I've been watching your videos for about a year and every time I see how much you do with such a small machine it inspires me.

[@LycanthropiesSpell]

A shot of whiskey every time you hear the word ' boring '...and I promise you it won't be anymore...

[@1Barrel2u]

I like your colloquialisms "toilets in chattertown" Great!!!!

[@aggieengineer2635]

Most impressed. I'm an amateur machinist having some problems with a blind hole cut. This answered so many questions. Thank you so much!

[@steveh8724]

One of the least boring boring bar videos I've seen so far!

[@toroidwinder2089]

I have a mini mill and a mini lathe, and I am very good at what I do. Unfortunately, what I am very good at, has nothing to do with either a mini mill or a mini lathe. sigh... Excellent presentation, excellent understandings, I truly enjoy learning from you. You explained many of the issues I have encountered while boring. I am very glad I have subscribed with you. Keep up the good work. John

[@Zen_Modeling]

I could of put my name on your Post & it would have been 100% accurate - Had my Sherline Lathe for 2 years & Sherline Mill about 6 months… Learning curve is so steep I’m getting nose bleeds…🤓

[@ypaulbrown]

You are my most Boring influence......thank you for being here when things get boring.....well done Video.....thank you Quinn...cheers for cold and Rainey Central Florida , Paul

[@kendonahve924]

Thanks!

[@eqlibrium854]

Some people are just born to teach.... thank you for your content.

[@foxwood67]

Boring Vid? Not! To be a good teacher you have to be passionate about what you do. Your passion for machining shines bright. Great presentation.

[@badmojamma]

I'm really grateful for these videos. Lotsa goof-ups and 'darn its' are avoidable when you know what you're trying to do in advance. Kudos, Quinn!

[@Churbas]

If you've got a small lathe, another very handy thing to have for creating holes is an Annular cutter. You can get them wicked precise, and they'll run WAY better than a drill or a milling bit, and way less work than running a hole and bringing it to size with a boring bar. Plus, instead of a small mountain of chips and swarf like a drill, boring bar or the like, they leave you with a slug of offcut that's still very usable for other small parts. Normally you get them for magnetic drills or specialty drill presses, but you can get either adapters or just annular cutters that will fit your tailstock. Basically, since you're only cutting the circumference of the bore, and thus moving that much less material, they need much less power to punch through even the thickest and hardest stock, they're very resistant to chattering, and they make dead clean cuts with a pretty damned good finish. And, they work great in mills, too. Depending on precision needed, I either just run one on size, or run one slightly undersize, and bring it in the last few thou with a boring bar. (Also I know you probably already know all this, Quinn, but the other commentators might not, sorry if I'm just telling you what you're already well on top of.)

[@Rubensgardens.Skogsmuseum]

I used round saws for the same purpose. They probably don’t clear burrs as well but it is a cheap way to remove a lot of material.

[@keithdavis00]

Some of these I'm going to have to watch more than once to remember all the details. The diction is as good as if it were scripted, but it seems to be spontaneous, amazing. Everything makes perfect sense. It's quite the experience, a mix of "Oh yeah, now I remember" and "I should have thought of that" and "Oops, I wouldn't have thought of that!"

[@jimsvideos7201]

Quinn you might be a little eccentric, but if that was a bad thing would you have that nice shiny silver play button? Supposition aside I can say that you're an excellent instructor and that your cinematography is to a high standard.

[@kenhukushi1637]

poke her with an indicator to get her spinning true.

[@tdck2978]

Your videos are never boring. Lol

[@toolrescue9119]

Love your voice. Great teacher. Nice and clear. Joy to watch

[@shrumsolutions879]

Awesome video. I wish this kind of content would have existed when I started machining. Happy to see my solid carbide bar making another appearance. I have found the High polished uncoated insert I sent you in the kit to be the best for brass over the tin coated insert.

[@sungear]

New subscriber here. Once again, top notch presentation. I hate youtubers that start filming without knowing what theyre going to say.

[@lilliandejesus2591]

Easily liked and subscribed, been machining for almost 9 years i love to see it

[@wayneevans5050]

I was doing a simple boring operation on the end of a part and having a bit of trouble setting the angle on the bar for clearance. due to lack of experience I wasn't sure how to correct this. so I watched your video and you actually addressed my problem. thanks so much for sharing. i always learn something here. And hey, who doesn't love a girl who can machine or weld.

[@trevorjones2473]

What an awesome woman, I wish I had the skills and knowledge of this Lady, Quinn, I salute you.

[@AmateurRedneckWorkshop]

Great video and it actually was not boring.

[@ruftime]

Thank you so much for this boring content Quinn! It always comes down to clearance Clarance😎

[@cooperised]

Most model engineering books call for the trinity of "drill, bore and ream" for e.g. cylinder bores. The drill hogs material, the boring bar fixes eccentricity and out-of-roundness, and the reamer is for surface finish (and final size, though the boring bar could do that).

[@alexfunke214]

Superb explanation of blind-hole boring. Bravo and thanks!

[@Festivejelly]

Absolutely loving these videos. Im having a great time on my little lathe.

[@dereksasquatchgarletts7924]

Very helpful! I've been noticing a lot of spring in my tooling. I'm new to the lathe and using a Craftsman/Atlas 12" x 36" lathe. I was boring today and could not get my carbide insert bar to cut worth a darn. I ended up flipping the insert holder upside and cutting on the opposite side of the piece. It worked well, but i know that's not the right way. I'll try better tomorrow with my new knowledge. 😅

[@martinpanev6651]

I cant gind a small enough boring bar for my little sherline so i recently ground one up, this video came right on time :D

[@martinpanev6651]

@@samuraidriver4x4 Ooh thats a good idea

[@nicholashacking381]

Towards the end of the video, I was thinking: "Couldn't you just get rid of the drill cone with an endmill?" And then you explained why this doesn't quite work. Thunder stolen. I bought a job-lot of old tools on eBay a while ago and one of the gems in the box was a really tiny HSS boring bar that looks to be home-made. It's one of the most useful lathe tools that I own. I'm dreading the day that it breaks: I'm simply too hamfisted to make another one myself.

[@daveharriman2756]

This is the first time I've seen the negative rake on some boring bars, especially the smaller ones, explained, great thanks a lot! have seen a few of your vids now, so thought I'd better subscribe, cheers, Dave

[@puits-de-science]

As always, very interesting and useful content. You are a star.

[@andrewdolinskiatcarpathian]

Using an engineers clamp to create a tail stock dial indicator reference point is inspired. Brilliant idea! 👌👏👏👍😀

[@dirtgrainsteel]

Thank you for this video I've been working on a project I'm self taught with my lathe and mill so videos like this really help!!

[@dass1333]

Your most most boring video ever and I still love it. Lol. Great work as always.

[@Grandwigg]

And sometimes boring is very exciting!

[@keith73z28]

No complaint from me, and the boring joke is fine either way. But you boring videos as well as other videos are not Boring. Quite exceptional !

[@JoshuaNicoll]

Thanks for the video, I really liked the boring bits, man I sure do love boring. Nothing beats a really nicely bored hole, smooth and true.

[@davereina7775]

Hi Quinn. Thank you for the video. I learned some new things to help with boring. I want to also suggest a micrometer stop locked to the bed of the lathe to help bore to a depth. I set the cross feed to zero, adjust the micrometer stop to the depth I want, use the power feed to get the carriage close to the stop and finish moving the last .040" by hand until I hit the stop. When I finally get the bore to size I touch the carriage to the stop and then turn the boring bar to center to clean up and flatten the back wall.

[@Blondihacks]

I did actually make a bed stop. Unfortunately this lathe is too small for it to be very useful. There’s rarely enough space between the carriage and head stock to use it.

[@dumetwatches6451]

Some boring bars can be fed in on a surface, i used to work with ISCAR boringbars that had a 12 mm insert, and you could put these on center and make a hole that usually came out just over 12 mm, without drilling first. then Finish with the same tool, and the holes would come out nice.. Did it a lot in Toolsteel (D2)

[@1tonygunalan]

I love your tutorial very much, as I am not so refined as you Quinn, I also love the faces you make Thank you.

[@kenchilton]

Yes, it was a boring video, but I enjoyed it! Thanks for another set of great tips.

[@Ioughtaknowbetter]

Very nice. Especially the info about inserts and cutter geometry. I'm generally lazy and just ask my tool supplier what i need and use what they give me, but it's cool to have the whys and wherefores explained.

[@DavidHerscher]

This vid was just in time. I'm working on a back plate for an uber sweet bison chuck i scored from a friend. "hashtag definitely sponsored" Anyway, need to bore the register for the spindle, literally came in to search vids for exciting tips and boring content... And this was sitting on my home page. Serendipity? why yes, yes Seren, it is dipity. Very dipity indeed.

[@Blondihacks]

I do appreciate a good dipity

[@tgirard123]

HA!!!. I always wondered where the term spring pass came from. It's a pass to take out the spring from either the part or the tool. I just could never figure out where that term came from

[@theperl9663]

Great teacher, I always look forward to the next one, I learn each time, even though I have been in machine shops forever. Thanks!

[@robertstarner8083]

Great video!!! Question……..What type of boring bar could I use to open up an 18mm hole to 24mm hole in 4140 steel material??? Thank you

[@toolbox-gua]

My kind of teacher! Thank you for teaching in such a clear and fun way.

[@kevinsellsit5584]

Nice video. I seem to find myself shaping bores, cutting O-ring grooves and even cutting snap ring grooves in internally splined bores...all to often. All of these challenges increase the likelihood of instant catastrophic tool failure from chip welding or oopsing (that is really a thing). On the side of my lathe I have a Mini Maglite clamped into a 1/4 inch aluminum bar which pivots on a bolt with a wingnut and a second bolt as a hard-stop to the center of the bore. This backlighting is very useful. Aside from needing batteries often and bashing your leg on it when it is in the down position, at least until you learn to turn it off and walk around it, it's very cool.

[@kevinsellsit5584]

@@greatestevar What? The flashlight that shines through the chuck? Old 13 × 40 drop gap and a Chinese remanufactured geared tilt head mill with power feed. Self trained bad habits and flying carbide. I wouldn't stand there if I were you.

[@BrianFullerton]

Flat bottom bars, they make the world go 'round...great lyric.

[@sirtango1]

Could you do a video on cutting saddles in flat stock to perfectly mate the diameter of round stock? I made a keyed shaft and use a horizontal mill cutter the same diameter of the piece I want the flat stock to sit on. Then I made a jig for the tool post to hold my flat stock and feed it into the cutter with very shallow cuts. Very time consuming with two thou cuts. Gotta be a better way. Especially on an angled piece with anywhere between 30-60 minutes of angle.

[@joeybobbie1]

Hi Quinn, another Great Video as always. I really enjoyed it. I am going to finally get a chance to try Boring some Holes after ordering some Boring Bars in different sizes. I thought you would have a instructional Video on the process, and sure enough! Thanks for all the Videos. They have really helped me through this new Hobby of mine. I’m really finding out the Cost of this hobby though. Like they say, if you want to be a Millionaire. Start with Ten Million and take up Machining as a Hobby!

[@azyfloof]

This Boring video was very exciting! Any plans on doing a Riveting video? :D

[@PCFithian]

Thanks for posting these, huge help for me in learning how to use my new lathe!

[@rexmyers991]

Well done. Thank you Master Quinn. I learned a lot.

[@lohikarhu734]

Very engauging video .... ;-) in-depth and cutting-edge stuff! Keep well, keep on un-boring us !

[@repairtech9320]

A boring bar cuts only in one spot similar to a step drill. But the step drill has the advantage of having the opposite side of the cutter pushing against the inner face of the material. Could it be possible to make an insert that cuts on one side and the other side would be smooth and slide on the new freshly cut surface. That cutting tool would be on an pivot point and after each cut, the tool would have to be turned slightly to expand the radius. The bar would only move in and out along the length.

[@marekpaul6110]

Who knew boring bars were anything but boring .. thank you for an excellent tutorial

[@zuthalsoraniz6764]

Wouldn't another use for a boring bar, beyond needing greater-than-reamer precision or very large holes, be if you need a hole that simply is a very weird size that you don't have a reamer for?

[@Blondihacks]

Definitely!

[@tonywilson4713]

@@Blondihacks Actually those Dewalt pilot point drills do have a rake towards the center. They certainly cut the outer edge of the hole first. If you put one in a drill press and go slowly you can see this as it starts to cut. I have used them for many years because they cut a very clean hole in Aluminum. I do automation and control systems which means mounting lots of proximity sensors. The Dewalt 1/2" pilot point cuts the perfect hole for a 12mm proximity sensor, which is my favorite (see below). I make most of my sensor brackets out of Aluminum because its so easy to cut & drill AND proximity sensors are tuned for ferrous metals. They do sense aluminum but at a much shorter distance. So aluminum has less chance of causing sensing issues. Proximity sensors come with very thin nuts, which seems dumb except you want as little metal near the sensor head as possible. Those nuts also tend to be nickel plated brass to help avoid false sensor signals. So I don't like an oversized hole for holding a sensor. The Dewalt pilot points cut an incredibly sharp and parallel hole in aluminum. So a 1/2'' cuts a very nice 12.54mm hole which suits a 12mm prox very nicely. You only need to pay attention to build up and clogging of the bit which is easy to avoid with WD40. Also if you want to tap the hole for a 12mm prox (which I often do) the Dewalt 7/16" cuts a very clean 11.1mm hole which is only 0.1mm oversize for the 12x1mm fine pitch tap. Yeah that's a heads up to anyone tapping for proximity sensors they usually have a metric fine pitch thread and YES I have seen machinists get that wrong NOT reading the drawings and run a standard 12x1.5mm. For anyone interested, I use 12mm proximity sensors almost exclusively because: 1: They are the lowest cost proximity sensors available from ANY and EVERY manufacturer. Smaller sensors cost more because they are more difficult to manufacture. Larger sensors cost more because they have more material in them. 2: 12mm sensors for reason 2 are also the most used sensors across the world. As the basic standard range versions all have the same specifications for range they are ALL INTERCHANGEABLE. So if your client breaks one they just need the equivalent from any manufacturer they can find. 3: You can drill a hole for them with drills from a normal drill set, which sounds silly until you get handed the next size up which is 18mm. 19mm hole saws tend to make a 20mm hole and that makes holding a sensor firmly awkward. You can get a 1/2" drill at almost any hardware store in the world. 19mm hole saws maybe not. 4: All Metric sized proximity sensors use metric fine pitch thread. The 12mmx1mm fine thread is reasonably easy to find taps for. The fine pitch taps for smaller and larger sensors are harder to get taps for - I know I have tried. About the only time I go away from 12mm is for specialist applications. I use 18mm Namur sensors for explosive gas & dust environments. They are not a lot more expensive and allow for larger sensing distances. I prefer using the double sensors for valves for the simple reason they are just easier and quicker to fit. I almost always use sensors (of all types - proxes, light beams, level, capacitive,... ) with a 12mm plug connection. Its just easier for installation and maintenance. If you need to replace the sensor or cable its just easier. The exception to that is sensors for explosive areas like the 18mm NAMUR mentioned above.

[@11Burrito11]

Thank you for making such an informative video! It has helped a lot with my engineering assignment 😄

[@AlRoderick]

Someone should open a pub called the Boring Bar near like Hampton Roads or something where there's a large population of machinists.

[@bigobasementprod.9776]

very informative as always. say I don't see a link for the flat bottom boring bars in video... carbide preferably?

[@jacobbellwood6184]

I've in general have noticed that with boring and it's not just here, in other aspects of shop working like welding, one often never truely 'masters' an area of work. There's that imperfect element to it until the moment of retirement. Always room for improvement. So the term ' work in progress' is often the constant. Which not everyone seems to have that basic grip on. I only seem to bore maybe at best 3 times a year so trying to keep in mind the technical aspect and remembering it can at times be an enemy.

[@claudelussier1678]

J'ai rarement vu une vidéo aussi remarquablement bien faite.

[@bostedtap8399]

Excellent discourse on lathe boring Quinn. Have you tried using a 2 flute milling cutter to cut a hole/pocket, then index the cross slide to increase the diameter using one of the cutting edges, I think you will work out where the orientation 😉. Thanks for boring, sorry, sharing. Groan.

[@Shibby13499431]

New to hobby machining and always find your videos extremely helpful. Thanks for the videos!

[@mysomervda]

That was great. The only bit of missing advice was that I should have watched you video before doing my first flat bottom blind bore 😀. I made all the mistakes but your explanations helped me understand where I went wrong, especially that I should have tried and avoid doing flat bottom blind bores.

[@BobChaz]

Very nice. And I am so glad that you didn't make my head explode with "use cases" until the end :-)

[@garymurt9112]

If you watch his channel, Curtis from cutting edge machine, just made a shop made boring bar. I don't remember the dementions but it requires his shop crane to move. 5 or 6 inches in diameter and several feet long.

[@Blondihacks]

😲

[@georgebell7103]

Nice job on this video… great introduction to Boring on a lathe.

[@rugwalle]

Now I never have to see another boring video on youtube again! 👍

[@davemason6273]

Very well put across Quinn, as always. There's always a place for these sort of videos. A far better job than I could do I'm sure.

[@Freakcent]

'Boring bars' even has an extra unintended pun for musicians!

[@alexjamieson3822]

One thing to make sure of when flattening the bottom of a hole is that the cross slide actually has enough travel for the cutting edge of the boring bar to reach the centreline of the spindle. Believe it or not, some import lathes (not mentioning any specific brand) don’t! You end up having to use the compound to get the extra offset required to reach the centre line.

[@davidgriggs7556]

Where did you source your solid carbide boring bar that takes inserts? I didn’t see it listed. Thanks. Love all of your content.

[@blackmanops3749]

I fell asleep somewhere in the middle. I guess you could say it was, well, boring. Lol.

[@MurrayC]

Excellent video, just did my first boring this week. And tips for internal bevels e.g. inside of a handwheel?

[@rexmyers991]

The best way to bore a blind hole is . . . . “don’t do them”. LOL

[@arnaudcochin3854]

Full or boring content. I liked it 😉

[@jamessimmons1888]

This is definitely not a boring video about boring.

[@glenn_r_frank_author]

Gave it a thumbs up just for the opening pun.

[@turbomini89]

Can making a tapered bore be achieved by offsetting the tailstock similar to cutting a normal taper?

[@johntinamostyn4044]

Great content as usual. Could you do a video on that fly cutter that you showed please. Thanks J &T

[@Blondihacks]

You’ll find it in my steam engine build series. There’s a playlist for that in my Playlists!

[@keithrosenberg5486]

Is your boring bar dull? Have you ever heard of Boring Oregon and Dull Scotland?

[@busterdavy9769]

Your very good at explaining things!😁👍🏾

[@Orxenhorf]

Aww... I was expecting some sort of joke about the gargantuan boring bar that Cutting Edge Engineering Australia made a few weeks ago.

[@joelpeterson3894]

I was waiting for this video to come out! So excited. 😊

[@greengohm]

Queen Quinn is here!

[@darwynulberg7314]

I just love this Channel

[@davemurphy3813]

I suppose that you could use a center cutting endmill to clean up the drill cone without needing a half-sized boring bar.

[@davemurphy3813]

Haha, I should have waited.... 22:05.