My Pinion to Racks Addendum to Dedendum Part Eleven
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- čas přidán 6. 09. 2024
- My Pinion to Racks! Addendum & Dedendum; is about a replacement and repair combination project on a main spindle gear for a small lathe. We are making one and repairing one of the same main gears, Part Eleven; we finish off the complete project repair, with a brazing fix on the gear train swing arm or gear change swing arm and conclude the video with a little slide show of the project as a whole.
Another inspiring series, thanks Keith. I have heard it said; 'if a man made it a man can mend it.' You must have been the man they were talking about.
Keith, I enjoy watching the processes you used as you completed the repair. My best to you, Harvey
Thanks Keith! You have given us the best Present a man can give all year..... his time! :-)
This is an great series of videos. We can watch them repeatedly because there is so much to learn and absorb.
I love the end, "don't rush the master, if you want it done right, you will have to show patience". GETTER DONE.
Incredible workmanship Mr Fenner ! Your attention to detail is second to none, I hope that quote you mentioned was just for tools and materials and you added on something for your time !
Keith,
Excellent job. After reading all the comments, I can't help but chuckle when so many people say what a great job brazing! Not to take anything away from your skillsets, but after 40+years in the welding and fabrication business myself, this was one of the very first things I learned when I started my welding career. You know as well as I do, it really is not difficult at all to braze. The hard part is the prep, and how to hold it for the repair!
I have to say though, I don't hold a candle next to your machining knowledge and skills, so to say the least, I hang on just about every word you say in your explanations!
Thank you so much for taking the time to share all of this with us, and you definitely need to raise your prices! I couldn't believe it when you quoted what you did for all the work that was done!!
Happy holidays, and a prosperous new year!
Respectfully,
Razor!
All too true about prices, but good karma is good karma. I get much enjoyment from being of help to others. Keep up your kindness Kieth, I applaud your approach.
Harry Grinwald
Hey Harry,
Don't get me wrong, Keith is indeed very generous, but even at twice the price, it still would have been a hell of a good deal!!
What a wonderful repair. I love to bring back broken machinery to operating condition. I will never be in your class but it is so much fun to try. My best to you.
Hello, Keith- a wonderful series, beautiful Craftsmanship- and a kind heart. The difference in the cost of the job- is conferred with the procurement of a new tool for your shop, and the gained experience in the practice of performing the work- and even using a new filming technique; such successful outcomes- build confidence into the next job. Bless you for your generosity- it will come back to you, someday.
Sweet deal indeed. Tyrell… few are those who own a Keith Fenner original for the price of materials! Envy will not lesson our appreciation for the priceless knowledge freely given every time you invite us into your shop Keith.
Thanks,
Brad
Outstanding job Keith even tho this video is old. I am always amazed with your workmanship and good commadery with the customers and the viewers of your great channel on CZcams.
Thanks again for sharing
Manny
Hi Keith. As one of your fans, I hope you're not reaching burn out on your work videos. It happens to us all. As you cool your tool bits when too hot, you also must keep yourself cool. I, and others, notice more than just your work skills.
A good doctor friend of mine got burnt out and was only refreshed by doing a childhood desire of operating a bulldozer. So he bulldozed a golf course after one of our hurricanes.
Wow, the end of another great fix! I had to chuckle because the can of Antiborax is the same as the one I have, just bigger, but I bought mine in about 1987! I haven't brazed anything in about 20 years, but I used used it twice in the past week. I used to build a lot of recumbent bicycle frames in the early 80's. After I get my O2 bottle refilled, I'm going to tackle the spring on a flour sifter. Yeah, its's kind of bizarre, but it's a family heirloom in my eyes. Repairing sort of hardened unknown steel....and a reinforced butt joint. I'll be glad if it doesn't break right away..!
That new gear looks better then the old one ! Great job Keith.
Thanks for making your videos so easy to follow. You really take your time to make sure the instructions can be followed by even a novice like me. Appreciate all your efforts to show what can be accomplished with the mind and the hands. "Merry Christmas to all the family from the central part of Kentucky"
Great series Keith, I really enjoy the high quality slide show as an overview at the end too.
Thanks, Joe
Some real nice still shots Keith
Another great video Keith. Cheers
What a wonderful gift! For Tyrell and us. Nice work
Beautiful, am always deeply impressed by your attention to detail
Oh Keith thankyou, please keep using the black & white setting, I like that, I can see clearer and understand more of what your doing.:-)
Coffieman5150 I will be changing out a few colors and see if I can break through the flare of the flux on camera. ;{)-----
Why does the video show localized blue/purple in the brazing area when it's set to black & white?
Pretty cool effect and took me a while to actually register it.
dadatschool Keith Fenner I was wondering that as well. I suspect that blue / purple is a little bit of UV getting into the camera. I know that camera sensors are somewhat sensitive to UV and the blue / purple only seems to come from the hottest parts of the flame.
Wow, you're very generous charging only $150.00. The video alone is worth that much. I tried designing a gear with Autocad and you really have to know your stuff. It is an exact science.
Thanks for the videos. I enjoy them very much.
Keith you did great.
Still room forn the torch . Grea job love the vid's. Keep them comimg.
I love how the repaired gear looked the fresh brass and the years old patina on the steel beautiful!
Ya know...It's so refreshing to see a person that actually loves to machine parts...It shows on every one of your videos.. Refreshing to see it's not always about the cash... I will guarantee that you'll be on my donation list for the future... I've been in the bus for most of my life and I still learn a lot from yer vids and others like you.. I figure if ya quit learning yer dead...LMAO..
thanks for slide show. I am repairing a broken half nut housing for the lead screw on my eastern lathe. copying the part has taxed my mill and experience. A braise repair would have been simpler. However, the design is the reason for failure so I opted to replace the cast iron housing with 4340. a cam throws the 45 degree closing of the nut. I'm on my third piece and going slow. a new housing did not exist in this continent and 100 dollars.
Thanks for the series Keith, happy holidays.
14:10 the UV light coming in through the low-light mode is really neat to see.
Nice gear, really nice brazing job.
Terrific series Kieth! Learned a lot about the sequence of operations and making things to do it right, plus you adding your thinking processes really ties things together in a masterful way. I've donated a couple of times now and will continue as I can because IMHO the service & heart you bring to us is just invaluable at some level. My commenting and a few small donations is the only means I have to thank you for all the work and what you bring to so many. Hopefully I haven't been tooo much of an irritant! Many thanks and Have Very Merry Christmas! ~PJ
great series i watched it twice now and enjoyed it even more than i did the first time. always learn alot from watching you do your magic in machining. thanks Kieth.
I've always been so scared of cast repairs. I mainly use my torn for cutting. I have a brazing tip, i might try to do some brazing because it would save me lots of time and money. Thanks for the great work!
great video great job great teaching great price
Merry Christmas Keith! You're a true Master. I really enjoy living your videos. While watching I cannot help but actually move along with you somewhat like I'm doing the work myself. There's so any times ai catch myself twirling my finters while you spin a nut or dip a braising rod. It's such a joy to be able to experience the jobs along with you! Best regards and many more Christmases to you and yours!
thanks for taking the time to share Keith! Merry Christmas to you and our family.
Hi Keith,
When you explain that everything is in the Machinists Handbook or any chart of the type, sometimes it's not so easy to figure out.. The fact you take the time to demonstrate, (I'll talk for myself), helps me to visualize the process in it's different steps from thinking it out, setting up, and realizing.
Despite being a machinist, watching your channel helped me undertake some task that I wasn't so familiar with and succeed....
Thanks so much again, add Happy Holidays to you and family,
Pierre
Another great video series watching a gear being made And how to repair one !!!
Kieth the Quality of your work seem,s an understatement. Great video.
another nice job, very educational.
thanks for the video
Outstanding Keith!
Really enjoyed the entire series, Thanks for taking the time and effort to video the entire process!
Ray
Nice repair Keith ! Thanks , I enjoyed the vid man..
I bet that workshop smells great! Like Grandads garage!
Little poll:
What do you think Mr Fenner did in the 2 hours span, waiting the arm cooling down?
1) Replacing/fixing a crucial part of the Shuttle?
2) Finally ending his time-machine?
3) Finalizing his enhanced Tardis?
4) All of the 3?
Jokes apart, There ain't nothing he can't do! :-)
Another great series, Keth. Merry Christmas to you and Vanessa.
again thanks for the videos.
Pro work Keith. Thanks for sharing!
It was interesting to hear what you valued the tooling and materials at for the job, but I'd be curious to hear what that job would have cost a pedestrian off the street in your shop, or industry average. I often try to figure out how much some of these jobs are worth, not just at scale, but given the extraordinary level of preparation and precision you use. Another great series. Your videos are occupying the space left by sucky TV programming during rerun season, and an inability to work on my boat during the winter. :)
Looks like a piece form a Logan Lathe? Guessing. thanks for the series Keith. I dug around the xnet and I couldn't find any change gear/back gear that matched that arm/bracket. So my arms are up: on the brand or model that part goes to. But I learned a bunch about the feed mechanism, lead screw, back gear train... yada yada. Time to move on.
I know this is older than dirt - but I enjoyed the process. Keep up the good work
Very nice work, Keith! Particularly enjoyed the tooth brazing.
Ciao!
G
As usual, I learned alot watching this series. Thanks again.
Hi Keith!
First I want to apologize for my lack of English, so I lose a lot of not understanding the comments on your videos, which with great pleasure to watch and are very valuable even in Poland :) He is my only google translator, sorry.
This video shows your valuable hand in the use of the burner, and a nice finish of the workpiece material, and even more interesting is to see how we make new gear / mode and a detailed explanation of the use of dividing milling ... even balancing bores have found their place in the new retail : D very, very beautiful work! I really like your videos.
I send greetings and wish you a Merry Christmas!
Zbigniew Lis - Poland.
Zbigniew Lis Hi Zbigniew, Thanks for the comment and greetings! I wish you and your family a Merry Christmas and a Happy New Year as well. I also would like to say from time to time, I get some tooling / cutters made in Poland and I have to say I am pleased, with the quality! Cheers, Keith
i like it when a plan comes to gather great video.
That Mark around that cog, I think it is a pin that was trailing through from another part like a locking pin, ace job Keith you get on with it. ***** Rob
I love youmoor
Very good video, thank you for taking the time you do to pass on your machine shop knowledge. Merry Christmas, JD
Loved this group, Gives us wannabes some real meat to chew on.
That is a $800 gear! Thank you for this great series.
I watch your videos a lot.. you do some beautiful work..
Very nice Keith !! A job well done as always.
I have found in the past that a thorough cleaning and a good pre-heat is the best way to get a proper, solid brazing, just like you show in the video. You just can't rush it.
Congrat's on another great video series and Merry Christmas from Hamilton, Ontario. Mike….
Keith,
Thanks for another year of great videos! Best to you and yours for the year to come.
Rob
I look at all this serie of videos with a great interest
very nice work governed by your experience and efficiency
probably that precision of this work is more than sufficient because the machine tool is far from new and this repair will outlast many it times
great serie of videos and all your videos are of a great interest
Really nice!
Should send it to Keith at the museum and he could cast a new rod : )
Nice job.Merry Christmas![hope you finished tapping the hole]
Awesome workshop. Thanks for the invaluable knowledge. You really know you stuff.
I immediately went to see if I could transfer a few dollars. I definitely owe you as I have learned so much from you. But I use an android tablet and have not found how to do it. Ill try again but I know Ive tried a few times.
Thats very generous of you Keith -----Just like Santa---- Great great video series
you covered a lot of different jobs in this repair
Merry Christmas to you and Vannesa
Great Video as always, Happy Holidays
Please tell me you remembered to finish tapping through the second threaded hole -- you mentioned you'd need to when you had to stop the tap short of the chuck jaw, but never showed you'd done it.
Great work as always Keith have a merry xmas and a peaceful new year
Another great series of videos Keith. Great explanations as you go through the job. A very merry xmas and a happy new year to you and yours. Regards from the UK.
Merry Christmas Keith & Vanessa!
Thanks for the pre-Christmas finally to this series! Very informative and fun to watch!
Thanks for sharing it with all of us!
nice work
great series :) Merry Christmas to you and Mrs Vanessa
Another great video Keith. Thank You. I enjoy the brazing portion as that is one of my favorite welding procedures. It's nice to make that flow into parts.
Again, Merry Christmas and Happy New Year. Now back to the real world here in Prescott, MI.
Wow, you are one generous dude! You have to charge a little bit more for the fantastic labor you put into this project. I'd feel guilty as hell only paying 150 bucks. Personally, I'd offer you a lot more than that if you did that work for me....Great job!
wow! at the end of this video, I do not envy you.,looking at that pile of chips and swarth there around your lathe, YIKES!LOL ! have fun !
Thanks for the info Keep up the good work .
Another excellent series Keith and thank you. Most enjoyable. Happy Christmas to you and best for 2015.
Well done
That was a great series Keith. So much to learn from it and I appreciate the time it takes to make these videos. Merry Christmas
Colin ;-)
Very nice job as always Keith, Let me just wish you and Mrs Keith a Merry Christmas and a happy new year, My wife just ask me if you were going to show your Christmas tree? The oil field engines i work on are cast iron/ steal and do alot of brazing so i get a lot out of this type of video, Thank you so much,
Hi Keith
Not sure how to tell you this, but there is a ghost in the background at the 3 minutes 50 seconds mark, top right corner.
Seriously, loved the series. Well done.
Ken
Was going to ask about price early but you explained yourself well. I think that was worth $300 but the craftsmanship and care was excellent. Not being a large shop you do very well. Give me an address to send a donation.
Great video. I am not sure what was the point of repairing the teeth on the old gear when you had a new gear to replace it. It was certainly all good work and I did see how to repair a gear. Thanks for sharing.
As Keith mentioned a few times in the series, it was all about demonstrating how to do the repair to his viewer audience.
Excellent but long video & for only $150 for that job, my bet most wouldn't touch for less than $250 or more. Christmas came early for that guy. I'd like to wish u & your wife Merry Christmas & Happy New Year.
Dave
This has to be one of the best videos I've seen. It was long, but you took us thru every detail! Could you let us know what brazing rod you were using, diameter and what flux, (brand). Thanks again, Jim.
what a great project seies
Non-machinst here: Stupid question - I saw it took a tremendous amount of time cutting one gear...is it the same of amount of work cutting two identical gear at the same time? let's say if the gears are 1/2" in width, parting off 1-1/8" stock, refacing one surface, then cutting the teeth to the gears, then parting off the 1-1/8" to two 1/2 gears, refacing the sides, drilling the holes....etc..etc..like i said, stupid question from a non-machinist..Anyway...love the videos.
You could cut mutable gears on a longer mandrel or a extra thick gear and split it into singles by parting, for a reduced per price. ;{)-----
Hi Keith: I am not a machinist, or anything close. I am a gunsmith, and anything I can learn about metal and working it helps me out with repairs. Mostly TIG. My question about the brazing, Are you using a carborizing or oxidizing flame? Maybe it is the sound affect of the camera, but it seemed you were pushing the tip?? Or am I just looking too hard?
gatling185 The camera picks more of the hiss than there is no matter the size of flame I just sharpen the cone, no extra oxygen than needed. ;{)-----
I watched this from beginning to end and I'm left with a couple questions.
1 I guess the diameter being 20 over on the new gear is not a problem?
2 The gear teeth not being perfectly timed with the key (exactly like the original) is not a problem neither?
Yes your right, the combination of all the dimensions were acceptable for the age and use of this gear and the key was not a timed or clocking need. ;{)-----
Great videos, looks like you got the low light frame rate sorted as well.
Keith that lapping table you use looks to be metal, I've seen other types that use a stone or glass top and I'm wondering if there is a reason yours is metal?
The sample "accident" you talk about could be wear from the machine sensor automatic alignment feature and may be why it crashed there buddy..........what are your thoughts?
Fabulous job. I've been hoping to see some gear work. Both new and repair work in the same series was wonderful. Is the bronze rod available in different grades or tensile strengths?
Louis Wu You can research rod alloys with welding suppliers and get exactly what you are looking for. I like the general purpose low fuming brazing bronze rod my self. ;{)-----
Thanks
Beautiful work as always. A quick question. I love that lathe but if you had to replace it with something new do you know what you would get. Do they still make anything like that with all its features? And what about that drill press. Is there anything around these days that could replace it? Cheers and Happy New Year.
I'm not sure what I would end up with, but it most likely wouldn't brand new! ;{)-----
Kieth,
Great video and thanks for taking the time. Question, Why does that bass rod look so silvery. Almost looks like nickel.
Thanks,
Mike
Nice work. With the 2 breaks in that part would it be advisable to make a new piece? Seems that one is a bit fragile.
Merry Christmas.
***** The brazing didn't weaken the part to a fragile point as far as using it again, as long as you didn't do the same mishap that caused the breaks in the first place. ;{)-----
wow Keith, a great conclusion to the series. one question i do have though: when drilling out the balancing holes on the new gear, why not use the rotation on the round table to locate the remaining holes?.. as a master machinist you have damn good reasons for anything you do and i know there are many ways to skin a cat.
since my bridgeport doesn't yet have a DRO i would be more inclined to use the rotate feature of the dividing head (round table)
have yourself a merry christmas and from us following you from Germany einen guten Rutsch ins neue Jahr (a happy new year)
mmikeyy27 They were slightly off of being clocked in rotation and in a true circle. Merry Christmas and Happy New Year! ;{)-----
Keith Fenner
Hello Keith, I usually watch and enjoy all of your videos. Question, on a part such as this, that carries a driven load and has already broken twice from stress, why didn't you choose to stick weld these components using nickel rod?
cwthemachinist As I have stated in almost every video that I braze cast or ductile material, with all of my experience in repairs the brazing is hands down a more guarantied repair because the arc mig or tig processes create a molten puddle in the ductile material which creates and unstable base in the repair, as it cools down, becoming hardened and brittle. The damage to these gears was caused by crashing or hammering on the spindle to loosen the chucks, not a failure of repairs. ;{)-----
Keith has discussed this in many of his other videos. Welding cast iron is HIGHLY problematic. The localized high heat causes hardening and embrittlement. The lower temperature of brazing does not induce the undesirable physical changes in the cast iron. Check Keith's "Hack & Tack Smack" series out.
BTW, bronze is pretty tough stuff. Back in the black powder days, bronze was preferred for cannons over "iron". Iron reinforced with bronze was used too.
Eli D.
Keith Fenner
Eli Duttman
Thanks guys. I as well have many years of experience in this trade.
I realize that bronze is tough stuff. The reason that it is "tougher" is because it is a ductile material versus the castings porous, brittle "harder" makeup. Also the reason it was used in cannons and percusive situations. It wouldn't fracture like cast iron and become shrapnel quite as easily.
It's not the bronze that is in question, rather that it is a different metallurgical make-up than iron. It only forms a surface bond to the casting because the iron never becomes molten and doesn't mix with the filler. The two materials don't become one as in a welding process. It's more of a molten bronze glue joint.
I've had much success with stick welding iron castings, using a nickel rod. Once the slow cooling process is complete, the part needs to move onto stress relieving in an oven. The hard, or brittleness issue of the molten weld istaken care of at that point.
This was just a curiosity and I thought I'd ask why another fellow Machinist chose this method over another. Either way, I enjoy watching your videos. Keep up the nice work! 👍
P.s.
I'm from Hyannis, small world.