Testing the BIG Boring Bar | Shop Made Tools

[@CuttingEdgeEngineering]

Let us know how do you think this boring bar performed!? And here's the build video if you missed it: kzbin.info/www/bejne/rpuxeZ2gltOYnsU 😎👍 Subscribe and hit the bell icon to turn on notifications so you don't miss our weekly uploads. 👇 🤳 Follow us online here: Instagram instagram.com/cutting_edge_engineering Facebook facebook.com/cuttingedgeengineeringaustralia/ Official CEE Merch shop: www.ceeshop.com.au

[@jetranger47]

"BIG Boring Bar??? Is that a euphemism for something?

[@vlady8me]

Before i watch the big boring bar i must ask you both Please get a colonoscopy.

[@mp6756]

Damn that bar is a beastly tool! The light cut was cutting freely enough to reveal the structural makeup of the stock. The lathe is also a ridged ass machine tool. Being able to stick the bar 600mm and leave a finish like that is fantastic.

[@wtfbuddy1]

You are now a Tool Maker - Good job and nice video work by the misses. Cheers 🍺🍺

[@maggs131]

Eat your heart out fireball 👍

[@nviduumde3497]

Even though you weren't comfortable to do the first test on camera, it shows once again, what kind of skill, knowledge and feel you have for your craft. It is a joy to watch these videos. Thank you for making and sharing these videos, guys.

[@CuttingEdgeEngineering]

Cheers mate thanks for the support

[@jakedevries1455]

Yeah they are a true joy to watch, it's so satisfying watching something get made from a lump of steel

[@TomokosEnterprize]

He really shines on his craft. No mistaking that at all eh.

[@jonathanfenne4948]

As an ex Cincinnati Machine Tools Dev Engineer, I'm very impressed with the boring bar, and general stiffness of the lathe. I relive my machining days through this channel! Great stuff.

[@CuttingEdgeEngineering]

awesome mate glad you enjoy the vids

[@boondocker7964]

We all are reliving the chips we took.

[@spencerjhog4429]

Awesome to see a fellow veteran of the "Mill" on the site. This guy has some serious skills! Retired now but still enjoy seeing big chips being made. I sold everything from an Arrow VMC, 30V's to 3 spindle 5axis with 3X100hp 10k spindles. This chap could give a T50 a workout.

[@bigdave6447]

That's why you're an ex. You can't be serious, I was falling asleep at his cutting speed! 80 rpm my old record player turned 78 rpm. With all that tool hang out 600mil's ,you'd need all that mass. Tell me I'm wrong!

[@cheatinggravity173]

@@bigdave6447awww, cutting edge engineering looks like you have a stalker... with no actual content on his own channel so that people can critique his stuff 🤣 Hey dave let's see your work so you can make everybody look like fools!

[@michaelcothran4064]

Just a heads up, when I've made extended bars I solved minor deflection issues by drill & tap back end of bar & added weights, also helped with vibration in heavier cuts, great show Kurtis!!!

[@G58]

That’s pretty much how we used to do it at the Rolls Royce Experimental Works in Derby back in the ‘70s. The bigger the bar the better. More mass equals more stability. Small steady cuts. What you’re looking to avoid is vibration in the bar and the work. Both can play on each other. I remember one of my worst experiences was boring large diameter blade rings at the main works on nights. Those things used to squeal like banshees! The only thing worse grinding in the shop nest door. Thank you for sharing

[@QuakerJT]

Nobody mentions it very often, but kudos to the one who does the camera work in your videos (not just this one). Very well done.

[@CuttingEdgeEngineering]

Thank you 😊

[@neilfairless4589]

Wish i was experienced enough to suggest something but i have no clue, i just like what you do Kurtis.

[@johnd499]

The deflection upon reflection is perfection lol

[@francisschweitzer8431]

Well he indicated for load deflection. I was curious about horizontal deflection away from machine center…. All that bulk trying to lean the carriage front end….down.

[@CuttingEdgeEngineering]

😂 10/10 for this comment

[@zachaliles]

The angle of the dangle is directly proportional to the heat of the meat.

[@stevenr8606]

👍⬆️ 🍌 🙎‍♂️

[@andrewmicas4327]

@@zachaliles Gosh that's an old one, I that in the 1960's.

[@johnquinn3899]

Fantastic all the way around !! I wouldn’t have a project on my 10” lathe that large, but your demonstration is so detailed I could make one on a smaller scale. Great narrative, camera angles, and fun with Security- thank you.

[@CuttingEdgeEngineering]

Awesome mate thanks for watching

[@DudleyToolwright]

That was really interesting, especially the bit about measuring the tool post deflection. It puts a perspective on things.

[@mick_0359]

A true perfectionist doing extensive testing which is the responsible thing to do...it’s the only way to guarantee your product so you can be 100% confident that it works...great job Kurtis

[@scotttipps8155]

You don't have to explain yourself on here mate. Most of these keyboard commandos have never even laid eyes on a lathe much less ran any piece of machinery. You do you bro, your knowledge and skill will always outshine the naysayers. Cheers mate.

[@CuttingEdgeEngineering]

Hey mate cheers for that 😎👍

[@ccengineer5902]

I think self affirmation is important, but this is a bit much. Assumptions lead to bad decisions. Advice can be helpful at times.

[@markfryer9880]

@@ccengineer5902 And sometimes another tradie from a different trade can suggest something from their own experience.

[@danielstellmon5330]

As a machine shop you are correct, as a KZbin channel CCE needs those keyword commandos for views. Best case scenario CEE educates the viewers, worst case, well a view is a view :shrug:

[@ingelboender]

Didn't expect the test footage this quick. This is a nice surprise! 👍👍

[@michaelwildman2587]

Very nice. We had a big bar where i worked in w.a. for BHE rebuilding hydraulic cylinders. We used a boring bar which needed the toolpost to be removed and bolted down on the toolpost mount. Bar was approximately 1.4m long. Only 110mm diameter. We used 16mm left hand turning tools and found the TNMG .8 RAD inserts to be very good. We used to spin job at 120rpm 2mm depth and .4 feed let the tool bite down and stay down. This was used when boring out front strut rods on the 797 dumpys. That material looks very soft which will be harder to control chips. Coolant will help making the chips more brittle and get a better chips.

[@johnyoungquist6540]

Clearly an essential tool for a big lathe with big workpieces. I never seen one this size commercially available but I have never looked. I have a 2 inch diameter, 18 inch long bar that I thought was big. Nice to have the raw material around to build such a monster when you need it. I don't have any cutting tools that I need a crane to lift. Very interesting as usual. Nice job.

[@svaserduk]

I solved the problem with the vibration of the boring bar using a counterweight also fixed in the tool holder, the length and weight are selected empirically.

[@hl8256]

I'd have given a kidney to hang out, sweep floors , clean machines and watch and learn in a shop like this when I was younger

[@trevorvanbremen4718]

Kidney??? You mean LIVER right?? From all the 'alcohol abuse'?

[@michaeltrilck5680]

Hi HL! At 1980, i was an apprentice,(after professional school) the old Machinists are showing me nothing, only where the chip shovel and hal broom to find onself... A very hard first 1/2 Year, to serve the old men, to maintain all the machines, to sharpen the drill bits, lathe chisel, boring bar bits and so on AND : "Get Coffee, Boy!!!" . Later i was alouwed to work on a machine... Wrong cutting values: "Clean up shop floor, boy!" Broke a little Drillbit or tap: SLAPSTICK and "Clean up machine, Shop floor, stupid son of a bitch!" That was hard, i was only 16. Than 2,5 YEARS along an uphill battle of recognition. Than the old man became more approachable... Now and then a pat of the sholder and a little smile from them, the have showed me more and more... I got respect for diligence... Now I'm over 40 years at shop floors... Have worked on conventional machines, NC-/CNC-Machines(puch card, ticker tape, Floppy disc, CD ROM, online, shop - floor - programs created by myself a. s. o.) Have see'n many companies(some of them are gone)Now i am the BEASTY DAMNED OLD! That's the way it goes... Sometimes... 😉

[@Alltakenbla]

Yip. Thats no bullshit talk right there.

[@hughobrien4139]

That’s just about how I got my first job in a machine shop. Worked for peanuts and abused my liver to drown the sorrows of harsh corrects either by the work itself or the shop foreman who worked equally as hard to make sure I was learning correctly. Loved it. Kept my young family fed and served me well

[@finnaustin4002]

The apprenticeships are a bit easier now days, but still lots of learning to be done

[@ZENMASTERME1]

This is very serendipitous, I was just binge watching Cutting Edge Engineering Australia videos when I got my notification from this epic channel! 👍🏽 🐕

[@CuttingEdgeEngineering]

Thanks for having notifications on and supporting the channel

[@ElmerJFudd-oi9kj]

Welcome to the club.

[@Woodie-xq1ew]

As someone who knows very little about machining and lathe work, a video on the different kinds of inserts and when you would typically use them would be very interesting

[@rockridgewoodshop]

I was thinking the same thing. I looked up the different inserts and it's a bit confusing. Also, it seems like they make more insert types for the bigger tool holders than they do for the smaller lathes.

[@xkblxcripple]

@@rockridgewoodshop With smaller lathes I usually ground my own tools out of HHS square bar or carbide blanks, Inserts were pretty deer and I'd rather hone a piece of HSS over buying so many inserts.

[@frick566]

Great answer on the deflection question!...and your "answers" to help with the deflection problem is spot on!

[@robbbranche]

This is a precision made tool....there was never a doubt! And judging by the outtakes we can assume it was a test!! Brilliant work Sir! Hi Karen! Hey there Homeless!

[@CuttingEdgeEngineering]

hey mate 😂 the testing tested my talking 🤣

[@davidmotoman4956]

well that answered my question Kurtis. It works very well for something so large. Well done. Thank you for taking us all on the journey mate.

[@markspeller5722]

Love this channel, thanks to Karen and Kurtis for taking the time and of course Karl for keeping it all going. 👍

[@Ninoy2059]

I am 100% sure you were confident of this test to be successful. Considering the vast amount of experience and knowledge you have build over the years. However, your additional tweaks, are essential. Keep the good work. We love to see more videos of your work and talent. Job well done mate.

[@SimonCoates]

Her: "What you watching???" Me: "Another boring video on KZbin" Her: "You're sad" Sad?... She doesn't realise how happy I am 😂

[@CuttingEdgeEngineering]

At least you didn't say "Kurtis playing with his big bar" 😂👍

[@SimonCoates]

@@CuttingEdgeEngineering LOL - I don't know what scares me the most: the length or the girth 😂

[@chrishartley1210]

I'm going to a boring bar soon but other nights it's quite lively. Might even get nicely cut. Correction, there's a wedding party so there's a bit of a buzz. Quite noisy but very little chatter.

[@garymurt9112]

This is exciting compared to one channel I watch, Ingalls stage coach. He did a complete buggy restoration and a couple videos was him sanding the coach. He does museum quality restoration.

[@markfryer9880]

@@garymurt9112 I watched his Borax Wagon series last year (I think, Melbourne has been in Lockdown for so long time is elastic). He does some amazing work and it is good that he is recording it for other people to use as a reference material.

[@oldblue3406]

I really enjoy seeing the indicating part of machining. It helps a guy understand setup and overall precision of a part or how precision is achieved perhaps. Especially when you turn a part around in the lathe and get it running true to the end you already machined.

[@jackwheeldon2184]

Would be great if you could make a video explaining the different insert's you use on the lathe and what the advantages/disadvantages are of each insert. Love the videos, keep up the amazing work 👍👍

[@RookieLock]

Big thanks to Karen for doing an awesome job. Thanks for taking us along !

[@firstmkb]

I’ve been in a lot of boring bars, and this one was definitely interesting! Great job & impressive tool.

[@briandailey7274]

All these numbers blow my mind. I like watching the videos and see what you do. Awesome job and love the squeaky toy for the dog

[@AttilaThebung]

Why did I smile when I saw the murder spring skittering around the back of the lathe?

[@johnmccaughan4195]

My My, turned it on, stuck it to it, and it didn't scream and fly apart. Nice job.

[@harveydix7611]

All the girls know Kurtis from CCE, he's got the biggest tool on the Gold Coast!! 😉 Nice job on the bar!! It will be a handy piece in the future. Thanks for the mid-week vid!!

[@CJsResearch]

I know nothing about machining but your chanel facinates me. Cheers mate, from the Northern Hemisphere

[@Matty.Hill_87]

I'm in the same boat mate

[@elitearbor]

Ah, stringy tubing. 1026 is the bane of my existence. Damn knotted balls of razor sharp nightmare yarn just spewing off everywhere.

[@alfadoofus]

Thanks for the fast follow up video . It was top notch as all all of your videos .

[@xtiger8025]

Today we're going to test the tester testing the test... Awesome!! If you post a video every day, none of us would get any work done. Perfect!!

[@CuttingEdgeEngineering]

🤣🤦‍♂️

[@andrewrobinson2869]

Just keeps getting better & better. Thankyou

[@tedheierman1181]

I love this post on the R&D of a new shop made tool!

[@fredscheerle7592]

Luv the Banana reference to flexi measure system, I grew up with both, fraction are a killer thought!

[@dennisleadbetter7721]

Hi Kurtis, That is a pretty impressive result. And when you relate that back to the cross slide and width across the saddle, a slight tightening of the cross slide gib while doing the specific job would reduce that deflection. I really doubt that the bar itself is the sole contributor to the deflection, which is minimal. Nice job. Homeless makes short work of those sqeeky toys. Regards Dennis.

[@scottsmall9898]

It's Tuesday this must be the best dream I've ever had, two videos!!! Awesome loving the new boring bar!

[@andrewbarnett84]

Looks good. Would be interested in seeing a thread cut, and a deflection comparison with a smaller bar, if you have time.

[@bigdave6447]

That guy doesn't know what he's doing! All that tool hang out, short and sweet. 2''dia bar would work nicely with min extension and closer to 600 s.f.m. r.p.m.

[@keithammleter3824]

@@bigdave6447 : You've missed the point. He's just testing, having the cut easily seen, and no doubt doesn't want to waste too much material or too much time. Later, he's used it on an actual job to machine out some huge long cylinder on which a 2" dia bar couldn't do the job.

[@nbrowser]

YAY! A Monday upload, thanks Karen, Kurtis and Homeless!

[@EPtechser]

Congrats on the result. Before doing invasive mods on the machine, you could try to lock the gib on the compound. That may take some of the flex out.

[@johnmorton7577]

Much cudos to Mrs Curtis video quality is getting better and better And please never lose the bloopers at the end I'm addicted to The ending of y'all's videos as much as the great content in machining Much love from Tulia Texas out on the farm 🚜

[@CuttingEdgeEngineering]

Glad you like them!

[@JTLaser1]

Karen to Homeless, “Go away, go on, git!” Foot comes out…. You don’t need to be a mind reader to understand Homeless’ reaction. “Awww mom!” ❤️

[@amcconnell6730]

To be fair - that was my reaction as well. ! :)

[@markfryer9880]

He was just showing off to his Mum

[@jeffryblackmon4846]

I'd say the new boring bar is a success. Don't drop it on your toes! Thanks for sharing.

[@Mike_Hoffmann]

Looks like a really handy bar. I'd love to see it with a grooving tool although it looks like it would do it with no issues except maybe the tool will need under cutting to clear the inside radius.

[@dadst3r]

Well this has thrown me, putting a new video out before Friday. Great to see the beast being used

[@CuttingEdgeEngineering]

Haha yeah a few viewers schedules are now all F'd up 😅

[@geoffwysham1731]

I’ve warned them, space-time continuum, but noooo…!

[@geoffrey6000]

That banana thing was so amazing dude! Made my day. Also, "it sounds like you". Please give your husband a high five from me for that!

[@CuttingEdgeEngineering]

🤣🤜🤛

[@lqueryvg666]

ooooooo - deflection test!!! Loved it - When you KNOW what YOU want, and it's "right there", then all of that hard work pays off!!!! nice!!!

[@ralphwaters8905]

It would be really interesting to know what the deflection is out at the end of that bar under the load of a cut. You could put an indicator out there (underneath) during an actual cut or just leave the machine off and rest a 25 Kg weight on the end. I bet it deflects a couple mm just from the toolpost. The natural frequency of this setup will make "chatter" occur at a really low frequency (maybe a few Hertz). Knowing the deflection and load will give you the spring rate. That and the effective mass of the bar will let you estimate this frequency using an online calculator. If you turn the work close to this speed (wild guess 200 RPM-ish) you might run into resonance issues. I can see really light cuts being needed to work the spring out of the tool and give you the accuracy you want. Great fun watching over your shoulder - we armchair machinists love that. Thanks for being a good sport on unsolicited advice... 🍺

[@randydehne8866]

Your professionalism is so encouraging...I can promise you, you make all of us want to be better..Keep it up guys!

[@FishFind3000]

You should start your own line of machinist tools and call the brand “Bananas”

[@markfryer9880]

That would be the American Product Line!

[@adambrown2626]

@@markfryer9880 yes, we don’t live in the sixties..

[@midcoasttractorservice9182]

Still trying to figure out how many Bananas in an inch.

[@adambrown2626]

@@midcoasttractorservice9182 what is an inch? 😂😂

[@midcoasttractorservice9182]

@@adambrown2626 Good one mate!

[@daveg1176]

Hi Kurtis, a thought that I had regarding testing the boring bar is to mount an accelerometer on the end and monitor the vibration electronically in 3-axis. Smartphone have an app that can also be used but only as a listening device. The phone approach is more available (free) and gives you a visual display as well as auditory. If you use an separate electronic detector, you will also need an oscilloscope to observe the vibration frequencies, intensity, amplitude, etc. This can also be used on all your tools to monitor performance. Dave

[@FatGuyInaTruck]

Yep, when shoving a big tool deep into a new opening, it's always best to go slowly and incrementally.

[@GeneralChangFromDanang]

And if there's screeching, back it off a little.

[@lukefitzgerald6043]

I see a lot of comments calling this man an artist and a craftsman. Maybe. But this vid demonstates his scientific acumen as well.

[@Satelitko]

I love that "Mother, why?" pause when you tried pushing Homeless away XD

[@notasbignow1]

Totally amazing loved the way your homemade tool worked out great job as usual Kurtis best regards from Scotland 🏴󠁧󠁢󠁳󠁣󠁴󠁿

[@OriginalMomo]

Watching you make the bar was really cool…. Seeing it used, even better. Cheers from banana land 🇺🇸

[@justanotheridiotredneck]

Banana land geez

[@stevenr8606]

⬆️ he must be talking about South Florida.

[@ebutuoyebutouy]

@@stevenr8606 Nope. All of the USA. We the only ones still using inches (imperial system) and not metric. Myself am just about fully metricated.

[@elpedro8975]

Bonus time baby!!! Thanks Guys, looking forward to seeing the project!!

[@francisschweitzer8431]

13:56 THAT LOOK FROM HOMELESS….. “me mum gave me this great toy and she won’t play with me”

[@CuttingEdgeEngineering]

🤣🤣🤣

[@Arnold1987]

This bar isn't boring at all!

[@ToplessTattoo]

Come on... Say it! Say it! You know you want to... "That's not a boring bar..."

[@williamlindsey4148]

Thanks for the video. I really look forward to your jobs. Since I retired watching these projects keeps me going!

[@spikeypineapple552]

I'd love to see an indicator on the top of the bar, seeing how much it defelects downwards when it enters cut

[@georgebadea4138]

I think you need a much longer cariage for this tool to preserve it's precision and lathe's rail life.Big LIKE!

[@Trevor_Austin]

Ladies & Gentlemen. This is how the things you need to live your lives arrive. Hard work, investment, trial, experiment and CDF. If it wasn’t for the likes of Kurtis, superbly supported by Karen, we’d be starving, freezing our bollocks off and living in mud huts or caves.

[@dvdadaudits7500]

Don't forget Karl

[@ElmerJFudd-oi9kj]

@@dvdadaudits7500 Oos karl mate?

[@dvdadaudits7500]

@@ElmerJFudd-oi9kj its a joke from one of the gifts they got a few months back that was addressed wrong and they got Kurtis' name wrong

[@ElmerJFudd-oi9kj]

@@dvdadaudits7500 Ah I see, thanks Gary

[@scottgotman8697]

great job, boring is always tough. I've found that running the tool upside down and spindle in reverse often times works good for clearing chips on deep bores in a lathe.

[@hashemmi24]

Amazing! Everything I wondered were answered in this one. I hope this tool brings lots of value to the shop.

[@CuttingEdgeEngineering]

Good stuff thanks for watching and commenting

[@MgoBlue24]

Pretty amazing stuff you do on this channel. Can't believe anyone would thumbs down any of your work. Job well done again, thanks for always giving me something to look forward to watching!!

[@TomokosEnterprize]

When I was micing the bores of my line bar work I used a pair of inside calipers that I had heated and bent to go in around the bar. Right from the beginning I was getting a .005 thou reading small. It was something that I was able to adapt to and trust over the years. Seeing the deflection and working to that deflection and knowing it to be consistent is a leap of faith and in time you will learn to accept it as well. The later part is really hard to do but as I always say, All good things take time to accept as Right as Right eh Ladd ! Who would have thought there was/is that elastic as it has shown us all today, eh ? Take care Mate and toss a nice hug on to your lovely lady and your boingy fella boy dog on all 4's for me. If I wasn't as old as I am now I would be knocking on your door for full time work. Shine on Kurtis. Love yer work old friend.

[@joeziegler9054]

Another great video Kurtis! Thanks for the bonus. I didn't see any of the comments about deflection and that stuff. At the end of the day it doesn't matter if you twisted up a trash can lid and added a insert cutter to it if it gets the job done its a success!! We have tons of shop made tools in our shop and some look like shit! But they work!! You do great work brother don't ever doubt yourself. Thanks again Karen for the great camera footage you're Awesome!!

[@CuttingEdgeEngineering]

right on mate thanks for the support

[@Dagrond]

That's some cutting edge engineering there mates!

[@TheEvertw]

Now I know how come you know your machines so well! Admire your professionalism.

[@dbratfich]

I saw a video of an columbian machinist that he install a opposite bar that touch the lathe bed with a bearing in parallel of the boring bar, so it absorb angular momentum in the tool post, when he uses an big diameter boring bar in a lathe. It allows to increase feed and depht of cut. Obviously it have a limit by size or shape of the part when needed to turning an tube or any part that it necessary to machine it. By the way, another great video as always Kurtis and thanks for sharing with us.

[@garethhall1476]

Eating breakfast, watching Kurtis machine a random bit of bar with his new toy, great way to start the day.

[@captdonformulapacific228]

No worries as expected- perfect as expected

[@bigsmoke6189]

Place I worked at years ago made up dedicated boring bar holders that would replace the 4 way tool holder ,they held bars up to 100 mm dia and dampened out vibration really well. they allowed the axis of the bar to be closer to the centre of the topslide. Be a good project for you !

[@cranefly23]

Well, that certainly does what it supposed to! Cracking job.

[@steamfan7147]

I used to set an extra steady at the start of the bore and clamp a section of heavy flat bar on edge to it. The flat bar supported the bottom of the boring bar similar to the way your free hand supports a pool cue during a shot. With that setup there is little to no delfection in the vertical axis. I've been wanting to make a dedicated sort of fixture to do the same thing, but add a sliding V-block that can be locked in between passes, so both the back and bottom of the bar can be supported.

[@brianbures4478]

As someone who does large Turing and boring the boring bar worked terrific, I have a similar bar not quite as large ,to prevent chatter I put a slug of Mallory metal in the bar the bar to help any possible deflection. Great job as always 👍👍👍👍.

[@stevebland6008]

never doubted it would work love watching your videos keep them coming cheers from the UK

[@hughobrien4139]

Interesting work. I have somewhat of a hard time keeping boring bars from deflecting in my 15” Leblond lathe. Most of it is around the compound. Looking at that massive lathe I can see there is a large dovetail to what appears to be a solid mount on the cross feed apron. Very impressive. I’d sure love to be able to work around there. Would love to visit Australia for an extended period of time. Everyone I know that has been there says they did not want to leave when it was time to come back home. Don’t know what it is about the place. The more I see what the good people are doing around there. The more I want to pick up and head that way. I know life has had its challenges around there these days just like everywhere else. Hoping and praying for everyone.

[@FredStam]

Camerawork is perfect, boring bar isn't at all boring. Its works fine

[@SubramaniamLakshminarayanan]

That was an awesome piece of a tool being engineered around a machine and job at hand. Probably also qualifies to make it to the guinness book of records for being the largest boring bar ever made.

[@howder1951]

Great video Kurtis and Karen, the bar is tested under most of your expectations and is ready for the rubber to hit the road so to speak. Enjoyed, satisfied my curiosity and cheers and thanks to all of you!

[@brianrutherford3681]

Very cool seeing the boring bar in use soon.love th bloopers at the end of the videos.

[@CuttingEdgeEngineering]

Glad you like them!

[@brianrutherford3681]

Yes I do enjoy them.i laugh all the time watching them.

[@forrestdigman4137]

you are really good . you swing big stuff and get smooth finishes. skill and knowlage top level !!!!

[@murdoch817]

I really like how the tool performed under the tsting and how you plan to use the data obtainted to make it perform even better. Kind of like the job I am running now in CI, 3 13/16" {96.8 mm} ID bore, 16" {406 mm} bore length, cemented carbide. Bar 3" {76 mm} Dia in a Warner Swazy 3A turret lathe. I am not sure of the alloty that the bar is composed of shop made before I worked their. I am going to measure deflection today, just for shits and giggles. Takes a 3/8" over all DOC (roughing). Part is a rope drum for raising and lowering gates in water treatment. Have 12 to do so one agressive rough pass on the bore speeds things along. The W&S T. lathe is a beast. I will try and get some pics for you, just in case you need to see some more machining :).

[@michaellicitra7632]

Have you ever thought about using a damper on the bar to reduce vibrations? Similar to a rotational damper aka harmonic balancer on an engine. It could be a simple bolt on combination of hard rubber and metal pate affixed to the side of the bar away from the tool or within the tool's projection. It would act to dampen the vibration along the tool length. In fact a brake drum / disc lathe has rubber bands that accomplish the same thing except they are on the rotating piece. If the piece permits it, the same approach could be used in addition to a damper bolted to the boring bar.

[@Kevin-ex2yb]

Another awesome video. I love seeing the effort you put into you videos and your machining. As a craftsman I love watching another craftsman that takes so much care. Thanks for including us in your process.

[@CuttingEdgeEngineering]

Thank you very much!

[@Dean5073]

I’m very impressed on the quality and size jobs you do by yourself love your videos and your shop set up

[@dystopianlucidity4448]

YES! It’s always a great day to get a CEE video, even better when we get one on Mondays! Have a great and awesome week, see ya’ll Friday! Cheers mates!

[@CuttingEdgeEngineering]

You too mate thanks for always watching as soon as the videos are up!

[@dystopianlucidity4448]

@@CuttingEdgeEngineering I’ll make time to watch your vids! It’s never a waste.

[@johnnymelendez4836]

Awesome skills Kurt,and great teamwork with Ms Karen. We can't forget inspector Homie 👍. 📹👌 Thanks for the knowledge🗽🇺🇸🇵🇷

[@billysmith6131]

I think you making your own tools is awesome no matter what it is. Testing is good so as you can see what the limitations are. Pretty sweet.

[@markusfischhaber8178]

What a nice un-boring bar. Thanks for showing us your test

[@CuttingEdgeEngineering]

Glad you enjoyed it

[@amalfi460]

I’m not a machinist……I just enjoy watching geniuses work

[@brendanmaltby1424]

Well done your boring bar works a treat. Love watching your videos. Keep up the good work