John Creasey that’s because I pre warm up the belt before recording. Otherwise it screeches and burps for awhile. Even tried belt conditioning spray with mixed result. What I do for my viewers 🤦🏻♂️😆
I like the central rod bit locking method, that's a good idea. I need better boring bars for my smaller boring head and might need to 'appropriate' your idea.
You're getting a great result with those boring tools, your toolbit grinding mojo is at full power :-D Great stuff. (Hope you're keeping safe - and staying home) Cheers, Craig
Gday Yuchol, nice boring bars, the stainless wrap for heat treating really does make a difference, I seen Keith Rucker use one the in he’s last video and worked very well, and so did Adam, thanks for sharing another great video, please stay safe, Cheers Matty
The boring bars turned out great Yuchol. Doesn't the Narex tooling come from Taiwan? Those boring/facing heads sure are a nice tool. Incredible quality.
What model narex head? I have 2 narex vhu 36 in really good condition and one narex vhu80 which is also in good condition but definately more used than the 36's. I really like them, last time i did internal snap ring grooves, radial feed is nice to have :) Really nice boring bars!
Jeff Kurtock you want boring bars to be as rigid has possible without making them glass hard (would shatter). Rigidity allows consistent dimensions on parts you’re machining.
@@woodscreekworkshop9939 Rigidity is measured by elastic modulus. Elastic modulus doesn't change with hardening. www.researchgate.net/post/Will_the_Youngs_Modulus_E_value_change_with_heat_treatment . I would expect that hardening boring bars will make them, well, harder. But it shouldn't make them more rigid, or stiffer.
…......but but Yuchol, you didn't use your "wise'. Stefan always holds parts in his "wise"...… LOL I'm joking. Stefan is one of my favs and he does very good with English despite it not being his primary.
Yuchol, Brudda, you never cease to amaz... You bring "Hobby Machinist" to a whole new level... Thx for sharing your skills.
Dave Lee thanks Dave. I try to do the best I am capable of doing, sometimes that’s good enough, others not 😁
Nice work.I am glad you cut a radius on the inside edges.That was a professional touch.
Thanks James
They came out lovely. Your mill purrs like a kitten when you run it. I wish mine was so quiet!
John Creasey that’s because I pre warm up the belt before recording. Otherwise it screeches and burps for awhile. Even tried belt conditioning spray with mixed result. What I do for my viewers 🤦🏻♂️😆
Nice job Yuchol. I have added making several to my project list. Thanks for the video and take care.
Thanks John
Oh yea, I forgot you have the Narex boring head. Jealous! Nice project - beautiful results.
Thanks Robert, my best $300 ever spent
Excellent job, great looking bars.
I like the central rod bit locking method, that's a good idea. I need better boring bars for my smaller boring head and might need to 'appropriate' your idea.
You're getting a great result with those boring tools, your toolbit grinding mojo is at full power :-D Great stuff. (Hope you're keeping safe - and staying home) Cheers, Craig
PS: I will have to check out Stefan's video to see why the design includes a top-screw and push rod, rather than just a bottom screw.
Thanks Craig
Gday Yuchol, nice boring bars, the stainless wrap for heat treating really does make a difference, I seen Keith Rucker use one the in he’s last video and worked very well, and so did Adam, thanks for sharing another great video, please stay safe, Cheers Matty
Thanks Matty, stay healthy!
Thanks, enjoyed watching. Could you, if possible, do a set up on cutting inner spiral groove (for oil passage in bearings etc).
new fav channel
Thanks and welcome
They seem to look and work very well thanks for the video
Thanks Joseph
As always awesome work.
Have a blessed weekend!
Thanks Anthony
Two opposite flats on the shaft would be helpful to tighten the setscrew at the upper end. Good job Sir!
John Doe I decided against that because I wanted the ability to adjust the rake. Thanks.
Great video, nice job
I just got one of those Universal heads Narex VHU 2-1/8 holds 1" bars.
Very nice, stout!
Great results there. A good useful project.
Thanks Harold
Hi Yuchol, found your channel through Ades Workshop (subbed). Nice job, they are a nice design. Jon.
Thanks Jon!
love this project
nadam35 thank you so much
Great Job Yuchol-Well Done ✅
Thanks Michael
Lot better than the cheap soft shank boring bars.
When you try to remove them the set screw has made a deep imprint in the shank.
Yeah. I’ve got some of those too. I will eventually phase them out
Thanks for sharing.
Great video love your work
thanks Troy
very nice ! Thanks for sharing.. You are inspiring us
I just want people to enjoy their shop time 😁
I JUST USE 2 FLUTE HS END MILLS. WITH PROPER RELIEF WORKS GREAT...
Hi Yuchol, great result and nicely made.
Regards
Kevin(MachineNZ)
Thanks. I used W1 tool steel for the main body
Nicely done
Thanks!
Sweet thanks for sharing.
Hey great job . Cheers .
Max Grant ,The Swan Valley Machine Shop. Thanks Max!
Good job
Some nice work there
Thanks Roy!
Great job and video.
Thank you!
The boring bars turned out great Yuchol. Doesn't the Narex tooling come from Taiwan? Those boring/facing heads sure are a nice tool. Incredible quality.
No, Narex comes from Czechoslovakia, very high quality
Came out nice.
Thanks Tom, I am happy with the result. Concrete yet? 😒
Woods Creek Workshop Are you kidding? Raining right now and going to rain everyday next week. This is just crazy.
Hill Top Machine Works cursed, cursed I say
What keyless chucks do you have on your lathe and mill? Great videos.
Both are Precision Matthews, very nice
@@woodscreekworkshop9939 Thank you for answering and the videos. I was thinking those looked really nice also.
What size? 3/4
Hey Yuchol - long time no video! Hope you're doing well, cheers!
Thanks, you too!
What model narex head? I have 2 narex vhu 36 in really good condition and one narex vhu80 which is also in good condition but definately more used than the 36's. I really like them, last time i did internal snap ring grooves, radial feed is nice to have :) Really nice boring bars!
It is Vhu 1-3/8
Great video!! Very informative!
Thanks Andrew
Very nice Yuchol
Thank you!
nicely done.
Thanks Steven
Why are they hardened? For that matter, why O1 steel?
Jeff Kurtock you want boring bars to be as rigid has possible without making them glass hard (would shatter). Rigidity allows consistent dimensions on parts you’re machining.
@@woodscreekworkshop9939 Rigidity is measured by elastic modulus. Elastic modulus doesn't change with hardening. www.researchgate.net/post/Will_the_Youngs_Modulus_E_value_change_with_heat_treatment . I would expect that hardening boring bars will make them, well, harder. But it shouldn't make them more rigid, or stiffer.
And it could be 1/4 28 tpi. So you have a bigger allen wrench
👍🏻👍🏻👍🏻
And it works.
Rustinox yes and definitely the highlight of this project 😁
nice
Jace Walton thanks Jace
…......but but Yuchol, you didn't use your "wise'. Stefan always holds parts in his "wise"...… LOL
I'm joking. Stefan is one of my favs and he does very good with English despite it not being his primary.
It is possible he is saying it correctly and we are not. I know, mind blown 😀
An sae set screw would be better
You can always find something better, but if what you got does the job...
You stole the features? It looks like you stole the whole notebook!
BTW, well done!
Don’t tell him, he may not notice
Hopefully this video isn't too 'boring'.
*Shows himself out*
Only mildly...
Yes very boring. :-)
Nice boring video! No humor???😝
This one was boring.
Yeah Yuchol got all serious on us. No dancing girls or face pop ups.
Rather boring video I'd say ...
CXensation I know. I yawned the entire time I made that video 😁