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9" Toolroom lathe carriage won't move
A bud asked me to come over & look at his lathe a South Bend 9A .
It's one of the fancy
ones large dials spindle cover on the headstock & came with a taper
attachment . The
Numbers on
A bud asked me to come over & look at his lathe a South Bend 9A .
It's one of the fancy
ones large dials spindle cover on the headstock & came with a taper
attachment . The
Numbers on
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By
mike allen
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#106524
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Re: Advice for a Oregon lathe daughter?
Claire,
Looks like your dad turned out a very handsome reguvenation of the S.B. Model A. I've had consistently good results when selling home-size machine tools on Craigslist, here in Seattle. You
Claire,
Looks like your dad turned out a very handsome reguvenation of the S.B. Model A. I've had consistently good results when selling home-size machine tools on Craigslist, here in Seattle. You
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By
Lawrence Sciortino
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#106523
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Re: Carbide - Surface Finish - 9A
Thanks for everyone's input. I did some more turning last night. I increased the rpm to around 900-1000. I didn't calculate sfpm, but it was much faster than my previous tests. The finish was
Thanks for everyone's input. I did some more turning last night. I increased the rpm to around 900-1000. I didn't calculate sfpm, but it was much faster than my previous tests. The finish was
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Mike Poore
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#106522
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Re: Advice for a Oregon lathe daughter?
Facebook has South Bend 9 and South Bend buy and sell groups.
Don't ignore his bookshelf.
Some books are stupid expensive.
Facebook has South Bend 9 and South Bend buy and sell groups.
Don't ignore his bookshelf.
Some books are stupid expensive.
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By
Sam
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#106521
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Re: Advice for a Oregon lathe daughter?
You might want to include the length of the bed . Looks like a nice clean lathe . I bet your dad was proud of his work restoring the lathe .
animal
On
You might want to include the length of the bed . Looks like a nice clean lathe . I bet your dad was proud of his work restoring the lathe .
animal
On
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By
mike allen
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#106520
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Re: Carbide - Surface Finish - 9A
Part of what makes carbide so useful, besides its hardness, is it's resistance to heat. The higher speed you can run it, the hotter it is at the cutting edge. The heat softens the chip being
Part of what makes carbide so useful, besides its hardness, is it's resistance to heat. The higher speed you can run it, the hotter it is at the cutting edge. The heat softens the chip being
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joebob4570@...
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#106519
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Re: Advice for a Oregon lathe daughter?
Thank you so much, Jan! Any reposts would be very appreciated.
warmly,
Claire
Thank you so much, Jan! Any reposts would be very appreciated.
warmly,
Claire
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By
Doug Scott
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#106518
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Re: Advice for a Oregon lathe daughter?
I think you should be able to get at least $2000 for this very nice lathe. I’d pay that, if I didn’t already have its one year younger brother.
I hope someone will soon discover this lathe for
I think you should be able to get at least $2000 for this very nice lathe. I’d pay that, if I didn’t already have its one year younger brother.
I hope someone will soon discover this lathe for
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jonwoellhaf
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#106517
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Advice for a Oregon lathe daughter?
Dear South Bend Lathe folks,
My dad, Doug Scott, loved reading the emails in this group even though he didn't post much after getting his 1947 SB 9" Model A up and running in 2013! He passed away
Dear South Bend Lathe folks,
My dad, Doug Scott, loved reading the emails in this group even though he didn't post much after getting his 1947 SB 9" Model A up and running in 2013! He passed away
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By
Doug Scott
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#106516
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Re: Carbide - Surface Finish - 9A
Pretty sure that was before I put this machine in service. Not a great deal of history on it. All I really remember is that he lucked into a largish bag of inserts, low-cost or free, and is using what
Pretty sure that was before I put this machine in service. Not a great deal of history on it. All I really remember is that he lucked into a largish bag of inserts, low-cost or free, and is using what
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By
Bill in OKC too
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#106515
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Re: Carbide - Surface Finish - 9A
Check your history ?
animal
On 7/14/2022 8:33 AM, Bill in OKC too via groups.io wrote:
Check your history ?
animal
On 7/14/2022 8:33 AM, Bill in OKC too via groups.io wrote:
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By
mike allen
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#106514
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Re: Carbide - Surface Finish - 9A
I have a set of eh AR Warner HSS insert tooling for my SB 9A & I think rather highly of them . Had them 6 or 7 years now & still using the inserts that came with the kit . I still
I have a set of eh AR Warner HSS insert tooling for my SB 9A & I think rather highly of them . Had them 6 or 7 years now & still using the inserts that came with the kit . I still
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By
mike allen
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#106513
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Re: Carbide - Surface Finish - 9A
When I got my first lathe, an HF 7x10, all I could afford was the cheap brazed carbide they sold, and it was definitely crap. The chips of carbide were not ground at all, and the they were brazed on
When I got my first lathe, an HF 7x10, all I could afford was the cheap brazed carbide they sold, and it was definitely crap. The chips of carbide were not ground at all, and the they were brazed on
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By
Bill in OKC too
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#106512
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Re: Carbide - Surface Finish - 9A
Greetings,
The theory behind cutting with carbide is that it tears instead of shears, the exclusion being polished positive rake inserts used mostly for aluminium.
And so, higher speeds lead to lower
Greetings,
The theory behind cutting with carbide is that it tears instead of shears, the exclusion being polished positive rake inserts used mostly for aluminium.
And so, higher speeds lead to lower
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By
Ondrej Krejci <okrejci@...>
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#106511
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Re: Carbide - Surface Finish - 9A
I've had better luck using sharp, positive rake inserts intended for aluminum, even on steel. I've not found the negative rake or brazed carbide to be useful on a light lathe.
I've had better luck using sharp, positive rake inserts intended for aluminum, even on steel. I've not found the negative rake or brazed carbide to be useful on a light lathe.
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By
m. allan noah
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#106510
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Re: Carbide - Surface Finish - 9A
I understand your concern! It depends on what you have. Some carbide is made a bit sharper than other carbide, but carbide is granules of very high-carbon material in a softer metal binder. The
I understand your concern! It depends on what you have. Some carbide is made a bit sharper than other carbide, but carbide is granules of very high-carbon material in a softer metal binder. The
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Bill in OKC too
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#106509
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Re: Carbide - Surface Finish - 9A
Ideally, I'd like to be able to use one tool to take a heavy cut followed by an acceptable finishing cut. Is that possible with carbide on a 9A?
You and Ondrej recommend 400-600 sfpm
Ideally, I'd like to be able to use one tool to take a heavy cut followed by an acceptable finishing cut. Is that possible with carbide on a 9A?
You and Ondrej recommend 400-600 sfpm
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By
Mike Poore
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#106508
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Re: Carbide - Surface Finish - 9A
I'm afraid that you need a much sturdier/more massive lathe than the lighter SB lathes. My experience is with Clausing-Colchester 13 & 15 inch school lathes. The smaller 13" lathe weighs about 2700
I'm afraid that you need a much sturdier/more massive lathe than the lighter SB lathes. My experience is with Clausing-Colchester 13 & 15 inch school lathes. The smaller 13" lathe weighs about 2700
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Bill in OKC too
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#106507
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Re: Carbide - Surface Finish - 9A
Hello,
With finishing inserts, usually D or 55 degree tip, and 0.005" to 0.010" tool nose radius, about 600sfm and 0.004" to 0.008" feed/rev. work well on 10 series steels.
OK
Hello,
With finishing inserts, usually D or 55 degree tip, and 0.005" to 0.010" tool nose radius, about 600sfm and 0.004" to 0.008" feed/rev. work well on 10 series steels.
OK
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By
Ondrej Krejci <okrejci@...>
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#106506
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Carbide - Surface Finish - 9A
I am sure this is not the first time for this topic, but I'd like to know what setup, if any, anyone has found that provides a good surface finish using carbide on 1018?
I have acquired a lot of
I am sure this is not the first time for this topic, but I'd like to know what setup, if any, anyone has found that provides a good surface finish using carbide on 1018?
I have acquired a lot of
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By
Mike Poore
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#106505
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