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Half Nut Fix, South Bend 13 (part 7) 

the shed dweller
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The half nuts on my south bend lathe had seen better days, to be honest they were well and truly munted. So, I set about making a repair that would allow the threads to be replaced, as and when the need arises. I hope you enjoy the Video
I had hoped to assemble the apron and get these half nuts up and running, but there is another problem that needs more attention in amongst the gears. The issue is with the sliding worm gear, it is held in place by two bushes, it in turn slides along the lead screw along the keyway, this in turn is held inplace by two threaded locking rings, these rings have worn the bushes to such an extent that they have buried themselves into the bushes in turn require replacement.

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1 июл 2022

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Комментарии : 71   
@TheKnacklersWorkshop
@TheKnacklersWorkshop 2 года назад
Hello Paul, Don't you love it when a cunning plan come together... nicely done. Enjoyable viewing, thank you. Take care. Paul,,
@Thesheddweller
@Thesheddweller 2 года назад
Hi Paul, yeah Its great, I’ve just got to get the next bit done now. cheers
@dizzolve
@dizzolve Год назад
What a complex little project. Enjoyed the content thx
@Thesheddweller
@Thesheddweller Год назад
Hi, thanks, glad you enjoyed.
@davidmott2090
@davidmott2090 2 года назад
Your 4-jaw chuck assembly is brilliant, love it.
@Thesheddweller
@Thesheddweller 2 года назад
Hi, i made a video of it, if you’ve not seen it. cheers
@LetsRogerThat
@LetsRogerThat Год назад
Paul you had my head hurting trying to keep up for a bit. Haha. Great job on this. I've got a 1944 SB13 and my threading operations result in slightly lopsided threads, which means my half nut has some wear and should probably be refurbished at some point. I rebuilt my lathe last year and it didn't look too bad, but I think it will have to make the project list this year. At least now, I have an example to follow. Cheers, Gilles
@Thesheddweller
@Thesheddweller Год назад
Hi, I’m glad you enjoyed the video. cheers
@alasdairhamilton1574
@alasdairhamilton1574 2 года назад
Nicely done😃 👍🏴󠁧󠁢󠁳󠁣󠁴󠁿
@Thesheddweller
@Thesheddweller 2 года назад
Hi, thank you. cheers
@williamsworkshopuk
@williamsworkshopuk 2 года назад
This is fast becoming my favourite channel - thank you so much for taking the time to upload these videos with the wonderful commentary!
@Thesheddweller
@Thesheddweller 2 года назад
Hi, thanks for your comments. Now I really have to raise the bar…. regards
@frankward709
@frankward709 2 года назад
Excellent Thanks for the video
@Thesheddweller
@Thesheddweller 2 года назад
Hi, thank you , you’re welcome. cheers.
@craftycri
@craftycri Год назад
BRILLIANT!!!! What a joy!!!
@graedonmunro1793
@graedonmunro1793 2 года назад
that's a really clever well thought out fix and it works!
@Thesheddweller
@Thesheddweller Год назад
Hi, sorry i didn't reply, I missed your comment. Many thanks,. Cheers
@lecnac855
@lecnac855 2 года назад
When all said and done very clever approach to the problem of process. Well done as usual.
@Thesheddweller
@Thesheddweller 2 года назад
Hi, thanks.
@chrislee7817
@chrislee7817 2 года назад
What a lot of work you are having to do! I hope my old Hardinge never needs this level of work.
@Thesheddweller
@Thesheddweller 2 года назад
Hi, it looks like a lot of work, but apart from the bed ways and the straight edges it isn’t too much work for a lathe that cost next to nothing.. cheers
@humanistwriting5477
@humanistwriting5477 2 года назад
Been looking forward to seeing your process fixing the half-nuts, and even then I'm 2 days late to the show! Good show and good idea making liners! It's always great to see another person's process and yours is very creative and cunning!
@Thesheddweller
@Thesheddweller 2 года назад
Hi, glad I didn’t disappoint, regards
@debike3077
@debike3077 2 дня назад
Job well done.👍
@Thesheddweller
@Thesheddweller День назад
Hi. Thanks
@RustyInventions-wz6ir
@RustyInventions-wz6ir 4 месяца назад
Very nice work. My half nuts is also worn. However I’m going to fit new ones. I’m not on your level of skill yet.
@captainraypaul4919
@captainraypaul4919 2 года назад
Great job Paul! I would think the extra holes would actually benefit in the lubrication aspect.
@Thesheddweller
@Thesheddweller 2 года назад
Hi, i’m counting on it, cheers
@Andrew_Fernie
@Andrew_Fernie 2 года назад
Very nicely done.
@Thesheddweller
@Thesheddweller 2 года назад
Hi, thank you. cheers
@VanFlausch
@VanFlausch 2 года назад
You done a great Job on these Parts.
@Thesheddweller
@Thesheddweller 2 года назад
Hi, thank you, Cheers.
@TheAyrCaveShop
@TheAyrCaveShop 2 года назад
Wow Paul, Fantastic repair...you put in a lot of thought and planning. Great solution and results !! ATB....Dean
@Thesheddweller
@Thesheddweller 2 года назад
Hi Dean, thank you, not much more left to do now. cheers.
@4GSR
@4GSR 2 года назад
Could not of done it any better my self! Nice job sir! Thanks for sharing, Ken
@Thesheddweller
@Thesheddweller 2 года назад
Hi, thanks you’re welcome cheers
@philhermetic
@philhermetic 2 года назад
A well thought out and brilliantly executed repair, why weren't all halfnuts made that way? Phil
@Thesheddweller
@Thesheddweller 2 года назад
Hi, its all down to cost I’m afraid. cheers.
@tonyray91
@tonyray91 2 года назад
Nice job Pau
@Thesheddweller
@Thesheddweller 2 года назад
Hi Tony, thank you. not much more to do on this lathe. cheers.
@JETHO321
@JETHO321 2 года назад
What a genius solution!
@Thesheddweller
@Thesheddweller 2 года назад
Hi, thank you.
@lesmo9627
@lesmo9627 2 года назад
Quality work as always Paul 👌
@Thesheddweller
@Thesheddweller 2 года назад
Hi, thanks
@HanstheTraffer
@HanstheTraffer 2 года назад
Absolutely brilliant. Your problem solving is marvelous.
@Thesheddweller
@Thesheddweller 2 года назад
Hi Hans, Ive had a life time of problem solving mainly because the drawing office kept breaking pencils until they got computers, then they went metric and cocked everything up. cheers
@buckw65
@buckw65 Год назад
Very interesting
@Thesheddweller
@Thesheddweller Год назад
thank you
@zakishahane2275
@zakishahane2275 Год назад
Very informativ video 🙏😍
@Thesheddweller
@Thesheddweller Год назад
Hi, thank you.
@be007
@be007 2 года назад
i really like the way how you fixing things mr hopewell, you are a true metal professor ! i was wondering, why aluminium and not brass ? thanks for the vid, cheers ben.
@Thesheddweller
@Thesheddweller 2 года назад
Hi, I once used to fly microlight aircraft and one part had to be replaced every year… this part was commonly called the 'Jesus bolt’ believe me if it malfunctioned thats all you have got time to say before your demise.. The thing is the bolt was made of certified hi-quality steel. This bolt passed through an aluminium bracket that never seemed to wear. One of my aircraft had several bolts replaced but the aluminium bracket was still faultless and showed no sign of weakness or excessive wear. The aluminium I used is very good quality material almost aircraft grade in the way that it cut. So I’m expecting great things from this repair…. on the other hand.. regards
@Bob-gc4rc
@Bob-gc4rc Год назад
​@@Thesheddweller Hi, love your channel. Have you considered that your jesus bolts could have been wearing out before the aluminium bush due to it acting like a lap? The softer metal getting grit or harder particles embedded in it and then wearing away the steel bolt.
@Bob-gc4rc
@Bob-gc4rc Год назад
​@@ThesheddwellerYou might want to keep a close eye on your lead screw for wear.
@Thesheddweller
@Thesheddweller Год назад
@@Bob-gc4rc Hi, thats exactly what was happening, and it was easier to replace a bolt than the entire suspension bracketry. It’ll be interesting to see what happends on the lathe after a bit of use. Cheers.
@Kevin-gx8lc
@Kevin-gx8lc 2 года назад
Wow Paul, that's a really good solution, well thought out and brilliantly executed. Very well done Sir! I think the aluminium will work ok - leadscrews don't move very fast and I wonder if another benefit of those additional holes from a previous project, might actually help with lubrication? I wonder if you could set up an oil dripper (as found on the Myford ML7) to make sure that the aluminium gets proper and permanent oiling. Excellent work... take a pay rise and an extra two weeks holiday... tell the boss that I said it was ok! Greetings from Southport.
@Thesheddweller
@Thesheddweller 2 года назад
hi, i tried that, the gaffer said must do better. regards
@azenginerd9498
@azenginerd9498 2 года назад
Fascinating approach. I'll be interested to see if the durability of the aluminum is satisfactory in your application.
@Thesheddweller
@Thesheddweller 2 года назад
Hi, I once used to fly microlight aircraft and one part had to be replaced every year… this part was commonly called the 'Jesus bolt’ believe me if it malfunctioned thats all you have got time to say before your demise.. The thing is the bolt was made of certified hi-quality steel. This bolt passed through an aluminium bracket that never seemed to wear. One of my aircraft had several bolts replaced but the aluminium bracket was still faultless and showed no sign of weakness or excessive wear. The aluminium I used is very good quality material almost aircraft grade in the way that it cut. So I’m expecting great things from this repair…. on the other hand.. regards
@glennwright9747
@glennwright9747 2 года назад
Back in the 60’ and 70’s we had a Luscombe tail dragger airplane. If I remember correctly the wings were held on with an aluminium pin. It was not a wear point.
@Thesheddweller
@Thesheddweller 2 года назад
@@glennwright9747 Which sort of reinforces my reasoning of using a good quality aluminium. I didn’t use any thing else because I hadn’t any thing and I have to watch the pennies at the moment. cheers
@glennwright9747
@glennwright9747 2 года назад
@@Thesheddweller I understand watching the pennies. With the cost of fuel these days I am suddenly aware it costs about $1 per km to drive my truck! And that does not fully include maintenance and insurance. Makes you think twice nipping out to pick up a small item. The drive can cost more than the item. Buying a Tesla is not the answer either. I will be long dead before I ever save enough fuel to pay for the luxury. Fixed income retirement makes me feel miserly even if by many standards I want for nothing.
@Thesheddweller
@Thesheddweller 2 года назад
@@glennwright9747 same here. 👍
@robertpearson8798
@robertpearson8798 2 года назад
Was the Baldric reference intentional?
@Thesheddweller
@Thesheddweller 2 года назад
Oh yes. you’re the first to comment on that. cheers
@robertpearson8798
@robertpearson8798 2 года назад
@@Thesheddweller You nailed it.
@Thesheddweller
@Thesheddweller 2 года назад
@@robertpearson8798 Hi, cheers.
@user-by9vh7gk9t
@user-by9vh7gk9t 8 месяцев назад
Здравствуйте. Скажите диаметр винта и шаг резьбы. Диаметр 16 шаг 2 миллиметра? Или 1.5 миллиметра
@Thesheddweller
@Thesheddweller 8 месяцев назад
Привет. Это не метрическая нить, это имперская нить. Если память служит мне правильно, это квадратный винт с 6TPI над 7/8». Надеюсь, это поможет. Ура.
@user-by9vh7gk9t
@user-by9vh7gk9t 8 месяцев назад
​@@Thesheddweller дюймовая. Дюйм=25миллиметров (25:8) ×7=21.875миллиметра. 6TPi=4mm.12TPi=2mm..17TPI=1.5mm из таблицы шага зубьев?
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