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morse taper, live center on tailstock, old Craftsman lathe

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Forum topic by Allen78 posted 02-22-2018 03:07 AM 1673 views 0 times favorited 15 replies Add to Favorites Watch
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Allen78

14 posts in 1234 days


02-22-2018 03:07 AM

...bought an old Craftsman lathe. The tailstock has a tiny center that requires frequent greasing. The center pin is mounted in a 0.31” metal cylinder (not tapered), and it fits inside a 1/2” 20 tpi arbor. Is there a morse taper socket that will thread on to this 1/2” arbor? I’m not a machinist, and I can’t seem to find the right device on any machine tool web site.


15 replies so far

View Woodknack's profile

Woodknack

11825 posts in 2408 days


#1 posted 02-22-2018 04:12 AM

It doesn’t sound familiar and I don’t want to chase down the model number. Can you provide more detail, pictures, or a model#? There is no way to convert threaded to a machine taper that I’m aware of without machine shop work. And would only have room for an MT0 which is a very uncommon size. Some old lathes were made before things were standardized and you can spend more money than they are worth trying to change them over. My advice is don’t spend much money on it and in the meanwhile look for something more standardized.
http://thewoodknack.blogspot.com/p/how-to-buy-vintage-lathe.html

-- Rick M, http://thewoodknack.blogspot.com/

View MrUnix's profile

MrUnix

6768 posts in 2227 days


#2 posted 02-22-2018 04:20 AM

Sounds like a description of a removable center tip on a dead center. But like Rick sez, kinda hard to give any advice without knowing what we are discussing… and pictures would certainly help. Don’t believe I have ever seen a tailstock ram that was threaded.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View bandit571's profile

bandit571

20265 posts in 2712 days


#3 posted 02-22-2018 04:28 AM

Does it look like this?

Parted this out last year….most went out to OK. LJer Candy has these items.

-- A Planer? I'M the planer, this is what I use

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Allen78

14 posts in 1234 days


#4 posted 02-23-2018 01:17 AM

Thanks for the responses. I figured that Morse tapers have been around forever. Someone suggested that I could put a 3-jaw chuck on the threads, but that’s not going to help me turn table legs, I don’t believe.

Some photos:

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Woodknack

11825 posts in 2408 days


#5 posted 02-23-2018 01:48 AM

100 years ago nothing about lathes had been standardized and wasn’t really until WWII. Morse wasn’t standard for lathe tapers until early 20th century. You get into really old lathes and you pretty much use them as they came.

-- Rick M, http://thewoodknack.blogspot.com/

View bandit571's profile

bandit571

20265 posts in 2712 days


#6 posted 02-23-2018 02:09 AM

What that appears to be is a “Dead Center” .....clean the recess out, and set the inner half back inside where it belongs…..I usually waxed the point before the end of the blank was shoved onto the point. More of a “Cup Center” , remains stationary while the wood spins on the point.

Turned many a table leg with it. Motor finally gave out…parted the rest out.

What it used to look like..

in use..

-- A Planer? I'M the planer, this is what I use

View guitaradelic's profile

guitaradelic

5 posts in 160 days


#7 posted 02-27-2018 02:58 PM

I have one of those Craftsman, I got a #1 MT live center at Woodcraft. Rockler also carries them, something like $20. Works great, much better than the old dead center.

-- Too many projects, not enough time...

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Allen78

14 posts in 1234 days


#8 posted 02-27-2018 11:23 PM

Looked at both web sites…does the live center that you’re describing fit on the male threaded tail stock? I don’t see a live center that would do that on either site.

View thimmaker's profile

thimmaker

17 posts in 150 days


#9 posted 02-28-2018 12:12 AM

Looks like that tailstock quill is hollow? Have you tried knocking out the center with a rod and hammer? Could be a #1 taper in there?

-- thimmaker

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Allen78

14 posts in 1234 days


#10 posted 02-28-2018 12:49 AM

Yes, it is hollow, but the piece that is removable, with the point, is cylindrical. The removable piece is O.31” in diameter, not tapered. I see on another web site that the most narrow diameter of a #0 taper is 0.25” and the widest diameter is 0.356”. Guitaradelic, is that what you did?

View MrUnix's profile

MrUnix

6768 posts in 2227 days


#11 posted 02-28-2018 12:52 AM

Do you have a model number so the manual can be referenced?

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Allen78

14 posts in 1234 days


#12 posted 03-01-2018 02:44 AM

149.23871

Here’s a link: http://vintagemachinery.org/pubs/732/7115.pdf

Nice drawing but not much specific information on the parts.

I’ll talk to the Woodcraft guys next time I’m in their neighborhood.

Thanks for all the helpful comments.

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Allen78

14 posts in 1234 days


#13 posted 03-01-2018 03:14 AM

...well, I could have checked this clever solution that was suggested right here on Lumberjocks!

https://www.youtube.com/watch?v=L_kUzdNBgi8

View MrUnix's profile

MrUnix

6768 posts in 2227 days


#14 posted 03-01-2018 03:45 AM

That machine was made by AMT (American Machine and Tool Co.) for Craftsman. The manual you linked to is for a very similar model (AMT Model 273), but slightly different – the 273 had a double tube bed, which I believe is the only real difference. Can’t find any reference to one with a bed similar to yours.

Anyway, It does not appear to have a morse taper, so you are rather limited in what can be put on the tailstock. According to the catalog though, there was a live center available that fit over the tailstock ram – AMT part #A432. Probably be kind of hard to find these days unfortunately. I can think of a few different ways you could make a live center, but it would be limited by what you have available in the way of tooling. In the mean time, the dead center is perfectly usable as is.. just use wax to keep it lubricated.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Allen78

14 posts in 1234 days


#15 posted 03-02-2018 12:46 AM

Actually, mine is the one with the double tube bed. Mine are the photos above that show only the tailstock. So the AMT machine is the one I have. It works fairly well…but, like you say, just need to keep that dead center lubricated. Thanks for the info; those old catalogs are interesting.

Allen—Crawfordsville, IN

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