Machinist in training here, I enjoyed this whole 3 part series. I had always wondered how one would go about brazing up and turning back or milling back a dimension. Now I know how to
Keith, hi from the u.k. and retired practitioner of old school, seat of the pants engineering. As far as i'm concerned, applied common sense coupled with accrued diplomas from the university of life plus hard earned experience is, and always will be, an unbeatable combination. Also, as someone with a healthy scepticism of the nanny state safety executive I am, after 67 years of "blatantly and recklessly pursuing dangerous workshop practices" still the proud owner of all my digits and bodily extremities! Nil desperandum, illegitum carborundum (never despair and don't let the bastards bring you down!) Keep on keeping on, well done sir.
Excellent repair! I’m a mechanical engineer by schooling but secretly want to be a machinist. I have so much respect for this trade and skill set. I love watching you take a disaster and turn it into a piece of art that functions. Truly mesmerizing.
Three really great videos. You never cease to amaze me with your machining skills and and care for all the details. Too bad we don't have enough machinists with your skills now a days. I work in a CNC shop and they call themselves machinists, but they don't have a clue compared to you. Thanks for sharing with us. Dan
Watched all 3 videos. I'm not a machinist but I enjoy watching your videos. You make it easy for me to understand. Your vids taught me alot about boat shafts and that helped me when I repowered the boat and upgraded the shaft and wheel.
It was great to see the work being done on your smaller lathe. I was waiting to see that machine put into action- I may have missed an earlier video when it was put to use. It was truly amazing that you were able to rescue the hubs from earlier machinists' attempts.
Excellent video series Keith. Just watched them all. A job well done and explained to perfection. You get a better sound from your lapel mic that anyone else in the machining community. No heavy breathing, snorts or teeth sucking, just perfect. Thanks for sharing. regards from the UK
Excellent series of expertise versus the inexperienced and/or ham fisted. Great method of brazing, and de-stress of previous malpractice. Many thanks for sharing Keith, unbelievable what you dug out. Best regards from the UK.
Learned something new, never thought you could put that much bronze in a part and have original strength. Great video Keith, great information, great description of the repair technique!
because the TV broadcasters in my country no longer broadcast new programs ,just constant repeats so we are forced to go to pay TV, I was watching Dawn of the Dead (2004) then this came up.
Excellent series Keith, thoroughly enjoyed it. Thank you for spending so much time to show us all how you addressed this B of BS then how the repair was done. Much appreciated from a new hobby machinist as a result of watching your videos.
by far one of the best machining videos Ive seen yet, from any of the channels. Your range of skills is impressive, including the photography and some of the shots you got are spectacular, your experience shows, you predict the outcome with incredible accuracy. I continue to learn soo much from you even after all these years and 100's of videos! well done, sir!
Three great video's, one completed project & a great way to spend a very cold Saturday morning here on the east coast of the UK watching and leaning!!! Thank you very much.
This was a great series Keith, watching the brazing and prep was amazing, I learned more than ever before because of your camera placement and tutorial. Keep up the good work. See you next year at the summer bash. JB San Diego.
3 vids in a row,very good presentation of every aspect of the every context,very nice,very conclusive,you've got me as a subscriber ! Love your videos ! All the best regards from Bucharest,Romania,south Europe !
Same here. It looks like fairly simple machining if one started with a fresh block of ductile. On the other hand, then we'd not have this entertainment to watch - so I'm not complaining! :-)
watched all 3 this morning, excellent workmanship sir! its nice to see repairs like this done the right way, and i take it these parts are to find with the amount of work one would invest in to repair them, much of which could have been avoided if after breaking the first bolt off, someone had taken the time to heat the hubs up before proceeding to break the rest of them off, but their haste gave you some work to do, and best of all, something for us to watch ;) thank you so much for sharing your skills, i imagine it will help a few others to do the same
Excellent video, top notch work. One thing I have noticed when power tapping on my Bridgeport is when depth is very critical I always clean the tape after every hole with a chip brush and apply tapping fluid so conditions are the same for each hole. Thanks for sharing your knowledge, keep on keeping on.
Thank you for teaching those of us who really appreciate your skill and wisdom to show how to get it done!! Us greenhorn wannabe's love armchair learning!! but some WILL put to practice if not its a great refresher of skills not done in many years--
Great work Keith. Never fail to inspire me. Absolutely love the time and attention you take to every job, no matter how bit or small. Good work, another job well done :)
Awesome series. I just watched them all. Awesome work learned alot of new things. Those hubs must have been very rare or expensive to replace to justify the repair cost. Thanks for sharing.
@@Gottenhimfella I was just thinking the whole time, why not just turn a new hub and how is that bronze brazing even gonna stand up to new threaded holes.
@@HellTriX Personally, I don't have any doubt the repairs will stand. Bronze is tough stuff, every bit as durable in threaded holes as ductile cast iron. I was cringing at the abuse the parts had suffered previously.
Hi Keith, watched all 3 segments and found it very interesting. As I watched, I could see you have made similar repairs before. Knowing that brazing would work in this instance comes from experience. Very good work. :-) ATB
Aloha Keith, The sign above the fire extinguisher in the background explains the repair, sometimes all you can do is shake your head and wonder WHY.... Nice work.
All very instructive and remarkable. I think I would have wanted to know what these hubs were destined for. I cannot imagine that a total brazed rebuilding would be necessarily approved for highway use.
Any sort of high heat input will shrink metal. Weld passes, brazing, all of it. When the metal is initially heated, it expands. But when it shrinks there is a stress induced in the metal which causes it to shrink to a smaller level than it was prior to heating. This can be used to your advantage when you need to put corrective heats to something that has become warped from welding, Or need to figure a sequence of how to weld something together to offset those forces. If you get something between 900 and 1100 degrees very fast, you can make it pull whatever way you want. Use that method to move 4 inch thick railroad beams into the right dimension all the time. Just an exercise in thermodynamics
Pretty cool about the beam, I can only imagine how many heats and reheats it takes to learn to make the metal do what you want it to do, I guess we all know heat did changed things to a certain degree, that is why you leave stock when sending out to heat treat, but this just stuck out like a sore thumb.@@nickwarner8158
@@nickwarner8158 Its actually not thermodynamics as you dont care about energy or work done. Its about thermal expansion and the yielding of the material due to a lower elastic limit at highter temperatures, giving way to this expansion.
What A Great Surprise !!! Three In A Row !!!! Is It Christmas Already ? The New Camera Looks Very Clear , Sound Is Also Clear !!! Thank You Mr. Fenner For Teaching Us So Much Good Stuff !!! You Da Man !!! Best Regards
While Bronze has similar tensile strength to cast iron, its deformation under load is about 40%more. Also its compressive strength is much lower. As such I would say that mechanically it is not as strong as original, maybe plenty good enough for this application but I wouldn't say it always would be the right solution.
Hi Brian, will you re-machine them brand new? may Adam would do that too? That's a right case to listen your different opinion based on your experience.
In this application, the bronze acts as a buffer between the casting and the bolt. Think of it like a bronze bushing but it has a perfect fit against the substrate surface.
Agreed. Good enough for this application operating primarily in tension. Granted there is compression on the two faces, but there is also a lot of surface area. Always have to be aware of the tendency to over generalize. We know the answer always has a disclaimer of "it depends".
Hi Keith ! A very very interesting and convencing series - braching is the method for this kind of job - yeah ! But ... I'm lucky I'm not paying for that repair ... but if it's thecustomers only way out of his problem, then he has to pay. Nice and thx for sharing !
Really fantastic work and skills, I can't help but wonder what an extensive rebuild job like this costs. You do beautiful work and explain it really well.
Great series! Thanks for the camera angles! An angle of what levers you were using while tapping would have been cool for next time. I suppose knowing your machine really helps with a tapping job so that it doesn't keep spinning and bottom out.
Great teaching on brazing and loved the Fenner Braze-Cam work, I now comprehend the technique and the skill which must be used to ensure positive results. Is there any way to put the camera overhead in your shop? would seem to be an optimum placement point so balancing wouldn't be required. just an aberrant thought!!
Beautiful result. I keep reading people think you should have started with new material, but that would have cost at least 4 hours per hub + a lot more material cost (at least $500 per piece when all said and done), compared to 4 hours per hub with little material cost (maybe $400 per piece I imagine). + love the brazing videos and results, love how that stuff likes to be machined.
This is a very good series.. best video on brazing I have seen. Really appreciate the effort you put in to get the best video. The lathe you used, is that your newest lathe? Is it a Korean make or US made? Btw, the audio is perfect.
People underestimate Brazing. If you get the PROPER rod, it is every bit as strong as TIG'ing a frame. Shop teacher Brazed together a Baja buggy in the 80s, it ran the 500 with no cracks.
artistic quality video, I've listened the 3 videos back to back and I never lost interest the part 3 responded to a questtion I had about shrinkage, In brazing and remachining bearing bores on heavy vehicules wheel hubs, the shrinkage was so important that when remachining the bearing bores, we removed all the brazing material and finished the bore on the original material of the hub. when you refinished the hub bore, you've encountered the same phenomenon
Machinist in training here, I enjoyed this whole 3 part series. I had always wondered how one would go about brazing up and turning back or milling back a dimension. Now I know how to
Keith this is a magnificent repair!
Expertise of machining few people have the skill to do. Almost like watching magic!
Wow!
You are a great teacher.
Do not change your format.
Thank you.
Keith, hi from the u.k. and retired practitioner of old school, seat of the pants engineering.
As far as i'm concerned, applied common sense coupled with accrued diplomas from the university of life plus hard earned experience is, and always will be, an unbeatable combination. Also, as someone with a healthy scepticism of the nanny state safety executive I am, after 67 years of "blatantly and recklessly pursuing dangerous workshop practices" still the proud owner of all my digits and bodily extremities!
Nil desperandum, illegitum carborundum (never despair and don't let the bastards bring you down!)
Keep on keeping on, well done sir.
Excellent repair! I’m a mechanical engineer by schooling but secretly want to be a machinist. I have so much respect for this trade and skill set. I love watching you take a disaster and turn it into a piece of art that functions. Truly mesmerizing.
A full course in machining, metallurgy and problem solving in 3 short sessions. Amazing stuff! Thanks for sharing this!
Three really great videos. You never cease to amaze me with your machining skills and and care for all the details. Too bad we don't have enough machinists with your skills now a days. I work in a CNC shop and they call themselves machinists, but they don't have a clue compared to you. Thanks for sharing with us. Dan
I worked in a few shops long time ago and never saw a fabricator come close to what you did with those hubs. Amazing.
Watched all 3 videos. I'm not a machinist but I enjoy watching your videos. You make it easy for me to understand. Your vids taught me alot about boat shafts and that helped me when I repowered the boat and upgraded the shaft and wheel.
This series has the best brazing info and video shots for anyone interested or learning! Thanks for sharing this Keith!
It was great to see the work being done on your smaller lathe. I was waiting to see that machine put into action- I may have missed an earlier video when it was put to use. It was truly amazing that you were able to rescue the hubs from earlier machinists' attempts.
Excellent video series Keith. Just watched them all. A job well done and explained to perfection. You get a better sound from your lapel mic that anyone else in the machining community. No heavy breathing, snorts or teeth sucking, just perfect. Thanks for sharing. regards from the UK
Very cool Mr Fenner, I was a “job shop” machinist 4 yrs of my younger life and miss parts of it...which you help bring back.
Excellent series of expertise versus the inexperienced and/or ham fisted. Great method of brazing, and de-stress of previous malpractice.
Many thanks for sharing Keith, unbelievable what you dug out.
Best regards from the UK.
Wow, super repair. Beautiful work! Get er done Keith!!!!!
Learned something new, never thought you could put that much bronze in a part and have original strength. Great video Keith, great information, great description of the repair technique!
Three vids in a row! That means it was a Keith Fenner marathon. Better than the walking dead.
because the TV broadcasters in my country no longer broadcast new programs ,just constant repeats so we are forced to go to pay TV, I was watching Dawn of the Dead (2004) then this came up.
Excellent series Keith, thoroughly enjoyed it. Thank you for spending so much time to show us all how you addressed this B of BS then how the repair was done. Much appreciated from a new hobby machinist as a result of watching your videos.
by far one of the best machining videos Ive seen yet, from any of the channels. Your range of skills is impressive, including the photography and some of the shots you got are spectacular, your experience shows, you predict the outcome with incredible accuracy. I continue to learn soo much from you even after all these years and 100's of videos! well done, sir!
Three great video's, one completed project & a great way to spend a very cold Saturday morning here on the east coast of the UK watching and leaning!!! Thank you very much.
Great stuff as always Mr. Fenner! Thanks for taking us along for the ride!
exelent repair on the hubs they turned out great. i really enjoyed the series thanks for sharing that with us Kieth.
This was a great series Keith, watching the brazing and prep was amazing, I learned more than ever before because of your camera placement and tutorial. Keep up the good work. See you next year at the summer bash. JB San Diego.
3 vids in a row,very good presentation of every aspect of the every context,very nice,very conclusive,you've got me as a subscriber ! Love your videos ! All the best regards from Bucharest,Romania,south Europe !
I'd be super surprised if the customer had been anything but happy with the job you did, Excellent job! Thanks for the video.
This is an outstanding video series. Bravo. Your skills are a delight to behold.
Outstanding series, really liked your closeups sound and clarity. Great job, thanks for the education.
Very impressive restoration! No wonder your customer was ecstatic.
Thanks Keith! Great Series. Thank you for sharing your time and so many talents!
Your experience and talent are amazing!
Thanks for a great series!
Keith, you are to metal what the finest surgeon is to flesh.
Well done!
A true master craftsman, excellent work as always.
I start to wonder if this was more labor than just machining three new parts from scratch. Great work as always Keith.
My thoughts too, cool repair anyways
Same here. It looks like fairly simple machining if one started with a fresh block of ductile.
On the other hand, then we'd not have this entertainment to watch - so I'm not complaining! :-)
Keith did suggest starting from scratch twice, but the customer said "No".
@@johncrowley5612 I believe Keith suggested buying new hubs from the manufacturer, not custom fabricating from raw stock.
@@redgrittybrick Correct. He suggested buying in finished, hubs, not machining from scratch.
watched all 3 this morning, excellent workmanship sir!
its nice to see repairs like this done the right way, and i take it these parts are to find with the amount of work one would invest in to repair them, much of which could have been avoided if after breaking the first bolt off, someone had taken the time to heat the hubs up before proceeding to break the rest of them off, but their haste gave you some work to do, and best of all, something for us to watch ;) thank you so much for sharing your skills, i imagine it will help a few others to do the same
Excellent video, top notch work. One thing I have noticed when power tapping on my Bridgeport is when depth is very critical I always clean the tape after every hole with a chip brush and apply tapping fluid so conditions are the same
for each hole. Thanks for sharing your knowledge, keep on keeping on.
Binge watched all 3 episodes and man, what an amazing series!!! Thank you Keith!!!!
Just found your channel, gotta say this is quality content. Great production and videography too! Can't wait to see your next project.
Thank you for teaching those of us who really appreciate your skill and wisdom to show how to get it done!! Us greenhorn wannabe's love armchair learning!! but some WILL put to practice if not its a great refresher of skills not done in many years--
Great work Keith. Never fail to inspire me. Absolutely love the time and attention you take to every job, no matter how bit or small. Good work, another job well done :)
a golden repair! by looks, cost and function! :D great work
Awesome series. I just watched them all. Awesome work learned alot of new things. Those hubs must have been very rare or expensive to replace to justify the repair cost. Thanks for sharing.
I just binge watched all 3 parts
It's also a bit of a cringe watch, doncha think?
@@Gottenhimfella I was just thinking the whole time, why not just turn a new hub and how is that bronze brazing even gonna stand up to new threaded holes.
@@HellTriX Personally, I don't have any doubt the repairs will stand.
Bronze is tough stuff, every bit as durable in threaded holes as ductile cast iron.
I was cringing at the abuse the parts had suffered previously.
@@Gottenhimfella Ahahah, I agree with that. I couldn't believe just how many holes had broken bits, taps, bolts, threads, etc. Total cringe indeed.
Same here.
Absolutely incredible machine work. My hat's off to your skill set.
The learning content from this series for me was priceless! Now I'm headed to your SWAG rack to say thank you. Ed k. Cleve. Oh.
Hi Keith, watched all 3 segments and found it very interesting. As I watched, I could see you have made similar repairs before.
Knowing that brazing would work in this instance comes from experience. Very good work. :-) ATB
Perfect Sound Keith, and a perfect job. Loving your work ;)
Aloha Keith, The sign above the fire extinguisher in the background explains the repair, sometimes all you can do is shake your head and wonder WHY.... Nice work.
Why? Perhaps too many think Why not give it a go, even if they don't know what they are doing.
Just watched all 3 videos, nice job and thanks for showing us all the details 👍
Your work turned out great. This was a great series for learning how to fix extreme hole damage issues. Thanks.
Sounds good to me 👍. Hearing you loud and clear, great content.
Pure Art. Great brazing work catching the low points. Just loved the machining back down...always the "fun" part. -T
I also just watched all three back to back. Its now 2:20 am. Great job Keith
Thank you Keith. Very good series there is a lot of good information. Full time lock out hubs take a beating i hope your work serves them well.
Outstanding work kieth. Beautiful brazing work.
i had to use a sick day to watch all these! such is life
All very instructive and remarkable. I think I would have wanted to know what these hubs were destined for. I cannot imagine that a total brazed rebuilding would be necessarily approved for highway use.
Great comment about the braze giving the bore a taper, never even thought that could be an issue on parts.
Any sort of high heat input will shrink metal. Weld passes, brazing, all of it. When the metal is initially heated, it expands. But when it shrinks there is a stress induced in the metal which causes it to shrink to a smaller level than it was prior to heating. This can be used to your advantage when you need to put corrective heats to something that has become warped from welding, Or need to figure a sequence of how to weld something together to offset those forces.
If you get something between 900 and 1100 degrees very fast, you can make it pull whatever way you want. Use that method to move 4 inch thick railroad beams into the right dimension all the time. Just an exercise in thermodynamics
Pretty cool about the beam, I can only imagine how many heats and reheats it takes to learn to make the metal do what you want it to do, I guess we all know heat did changed things to a certain degree, that is why you leave stock when sending out to heat treat, but this just stuck out like a sore thumb.@@nickwarner8158
Shh! You’ll reveal Mr. Fenner’s proprietary prop shaft straightening procedure!
Shh! You’ll reveal Mr. Fenner’s proprietary prop shaft straightening procedure!
@@nickwarner8158 Its actually not thermodynamics as you dont care about energy or work done. Its about thermal expansion and the yielding of the material due to a lower elastic limit at highter temperatures, giving way to this expansion.
What A Great Surprise !!! Three In A Row !!!! Is It Christmas Already ? The New Camera Looks Very Clear , Sound Is Also Clear !!! Thank You Mr. Fenner For Teaching Us So Much Good Stuff !!! You Da Man !!! Best Regards
While Bronze has similar tensile strength to cast iron, its deformation under load is about 40%more. Also its compressive strength is much lower. As such I would say that mechanically it is not as strong as original, maybe plenty good enough for this application but I wouldn't say it always would be the right solution.
Hi Brian, will you re-machine them brand new? may Adam would do that too? That's a right case to listen your different opinion based on your experience.
In this application, the bronze acts as a buffer between the casting and the bolt. Think of it like a bronze bushing but it has a perfect fit against the substrate surface.
@@mrdabeetle1That's right - its surrounded by iron, not like a fully bronze part.
I believe it's brass, not bronze
Agreed. Good enough for this application operating primarily in tension. Granted there is compression on the two faces, but there is also a lot of surface area. Always have to be aware of the tendency to over generalize. We know the answer always has a disclaimer of "it depends".
Hi Keith !
A very very interesting and convencing series - braching is the method for this kind of job - yeah !
But ... I'm lucky I'm not paying for that repair ... but if it's thecustomers only way out of his problem, then he has to pay.
Nice and thx for sharing !
I could watch this for hours. Wait a minute... I just did!
Lol same.
Me too
He could really benefit from some time-lapse footage...
Extremely good video series . Thanks for the lessons .
Nice video quality, with a new camera, I like this depth of vision, to the whole screen, and wonderful colors
Fantastic Keith, very skillful. Thank you. Regards Gareth
Really fantastic work and skills, I can't help but wonder what an extensive rebuild job like this costs.
You do beautiful work and explain it really well.
All three hubs combined took a total of 9 hours ;{)-------
Hi from England
Lovely set of 3 videos here Mr. Fenner.
Great series! Thanks for the camera angles! An angle of what levers you were using while tapping would have been cool for next time. I suppose knowing your machine really helps with a tapping job so that it doesn't keep spinning and bottom out.
Those are gorgeous Mister Keith!
Great teaching on brazing and loved the Fenner Braze-Cam work, I now comprehend the technique and the skill which must be used to ensure positive results. Is there any way to put the camera overhead in your shop? would seem to be an optimum placement point so balancing wouldn't be required. just an aberrant thought!!
Another successful operation Keith. Excited about the swag I ordered, can't wait to wear it.
Help! It's 03:45am and I can't stop watching this series ...
...IT'S A CRUEL WORLD-!!!!
Top job 👍 i really enjoyed watching all 3 vids
Keith you are the best fixing thanks people stick in there holes.
Beautiful result. I keep reading people think you should have started with new material, but that would have cost at least 4 hours per hub + a lot more material cost (at least $500 per piece when all said and done), compared to 4 hours per hub with little material cost (maybe $400 per piece I imagine). + love the brazing videos and results, love how that stuff likes to be machined.
Nice job Buddy. Thanks for sharing.
29:25 we went from it looking like a cake to looking like a drippy paint bucket . I really enjoyed this series by the way
Awesome series Keith
Super craftsmanship Keith, and an excellent result. It proves you can polish s turd!
Very intersting repair and that was some good brazing.
Love your brazing vids Keith. Remember on job you did on a old john deere years back, i was blown away. Just pure witchcraft man ; )..
Sit down, shut up, listen and learn.... lovely.
Wonderful work Keith. Cheers
Very good tutorial on brazing.
The inserts with the larger cutting radius seem to burnish the metal as they cut, leaving a slightly denser and harder surface finish.
*_Still the best machining channel..................._*
Nicely done, shopwork and filming....!!! ;)
This is a very good series.. best video on brazing I have seen. Really appreciate the effort you put in to get the best video. The lathe you used, is that your newest lathe? Is it a Korean make or US made? Btw, the audio is perfect.
Taiwan, made 1988, before china one! ;{)-------
People underestimate Brazing. If you get the PROPER rod, it is every bit as strong as TIG'ing a frame. Shop teacher Brazed together a Baja buggy in the 80s, it ran the 500 with no cracks.
Red white and blue flag on new shirts match the red white and blue beard elastics... nice touch Keith.
artistic quality video, I've listened the 3 videos back to back and I never lost interest
the part 3 responded to a questtion I had about shrinkage, In brazing and remachining bearing bores on heavy vehicules wheel hubs, the shrinkage was so important that when remachining the bearing bores, we removed all the brazing material and finished the bore on the original material of the hub.
when you refinished the hub bore, you've encountered the same phenomenon
Thats always cool, most of the time if you don't remove material first the base material is what your left with. ;{)------
Keith can make a silk purse out of a sows ear, it just takes about 10lbs of brazing rod.
who many lb's of rod?
Nice, I learn a lot from your channel and enjoy it, thanks for sharing the knowledge.
muy bueno keith super que buen trabajo cuantas horas te llevo saludos ariel T.M.P
Very good series. I watched this at 4am & there was no place too comment.
That was because it was set on privet settings to start out with Facebook friends before going public. ;{)------
Keith you've become a reconstructive surgeon...
Keith I would suggest on a job like that is to use studs instead of bolts should prevent damaging the the threads again
They are using studs, as described in video, NC in hub and NF stick out for nuts, I was just using bolt to test threads. ;{)-----
That is and awesome series. I enjoyed it all. It is just fixed.
Thanks
Scott
Thank you for sharing your knowledge with us
master Keith , thank you for all of videos .
very good video/audio quality. Nice work!