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Old 07-28-2009, 05:53 AM   #1
Foozer
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Default Craftsman 109 Lathe

Here that a few of these are hidden away behind work benches and other objects long forgotten.Been described throughout the range of "Cute" to "Boat Anchor" But its what I'm stuck with and if it can turn out a Rocker Motor I'll slide it toward the "Cute" category.

So I have the 109-20630 model, sleeve bearing head stock and all. Have most of the change gears and the threading dial gizmo. Changed the motor over to a treadmill variable speed DC type and am very happy with the results.

So now that the "Rocker Fever" has passed its time to fix some of the little things that need attention. First off is the cross slide. Time to get it into a smoother operational condition, has yet to be seen.

Original gib plate is steel, just doesn't like to slide as well as I'd like. Using a vertical slide to fly cut stock just plain gets hard on the fingers. Loosen the gib to ease the turns and well, that don't work. So cut one out of brass, its natural slipperiness ought to help some.

Before that, I spent some time with some 600 paper on a piece of glass and ran the separate components over it a bit to identify and knock down any high spots. Not looking to remove metal, just enough back and forth to get a consistent shinny surface. Then some Bon-Ami and oil mix, more back and forth till it felt decent. Enough for today.

Next is the addition of another screw for gib adjustment. It only has 2, one at each end and at extreme travels the ends sorta hang out in mid air. That can be improved.



Robert



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Old 07-28-2009, 01:51 PM   #2
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Default Re: Craftsman 109 Lathe

I picked one up at an estate sale pretty cheap. I added the third screw also. Replaced the rear carriage gibb with one made of brass and moved the contact points to the outside rather than the single center point. Then drilled and tapped for two adjusting screws. One on each end rather than the wing nut in the middle. Helped stop the rocking of the carriage. Machined a new rear spindle bearing. Removed the pin holding the knob on the compound and installed a steel collar with a set screw so I could adjust it. Replaced the crank on the cross slide with a knurled knob and again put a steel collar on it with a set screw so the lash could be adjusted.

It won't replace my Atlas 12" but after tightening everything up it made some fairly good cuts. It will cut 1" steel with a HSS tool and take .018 cuts without complaining. It does OK if I don't push it hard. Does require some effort to get it tight enough to work properly.

Not quite a boat anchor. Nice thing is that it is really easy to move and small enough to put on a shelf when it is not used.



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Old 07-28-2009, 02:51 PM   #3
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Default Re: Craftsman 109 Lathe

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Originally Posted by black85vette
I picked one up at an estate sale pretty cheap. I added the third screw also. Replaced the rear carriage gibb with one made of brass and moved the contact points to the outside rather than the single center point. Then drilled and tapped for two adjusting screws. One on each end rather than the wing nut in the middle. Helped stop the rocking of the carriage. Machined a new rear spindle bearing. Removed the pin holding the knob on the compound and installed a steel collar with a set screw so I could adjust it. Replaced the crank on the cross slide with a knurled knob and again put a steel collar on it with a set screw so the lash could be adjusted.
You do know the machine Sounds like my "To Do List"


Robert
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Old 07-28-2009, 03:09 PM   #4
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Default Re: Craftsman 109 Lathe

I'm following along with you Fooz', in the interest of perhaps doing some mods to the 109 that I have. For those of you not familiar with these machines here is a picture of what one looks like so that you may better understand what Fooz' and others are talking about. They are terrific small machines and many are still around in use. This one was used all of its life in a auto atore to turn armatures for generators etc. My Father picked it up for a few dollars and gave it to me. I in turn, took it apart and cleaned it up and what you see is the end result. I just need to get a manual for it as well as a motor and I'll be all set.

BC1
Jim

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Old 07-28-2009, 08:57 PM   #5
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Default Re: Craftsman 109 Lathe

I also have a 109, model 20630, besides a couple of other lathes. I've done most of the things described here, plus some. The people who say it's a boat anchor probably just don't know how to listen to the machine. It's not a Heavy 10, and can't be treated like one.

After making a rear bearing, buying a new front one, making a spindle nose adapter that will take a good chuck, replacing all the gibs with brass, putting in a third gib adjusting screw on the cross slide and some proper adjusters for the carriage gib, this little lathe works just fine. It's over 60 years old and it just needed a little fixing up.

You can see my 109 adventures on my Craftsman AA pages;

http://www.deansphotographica.com/ma.../109/109a.html

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Old 07-28-2009, 09:05 PM   #6
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Default Re: Craftsman 109 Lathe

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Originally Posted by bearcar1
. I just need to get a manual for it as well as a motor and I'll be all set.

BC1
Jim
I just used the motor from my bench grinder with a 2" pully and screwed it down to some MDF with the lathe as a test set up.

I have a parts list and a bunch of materials from different sources on the web. I will forward anything I have by email.

Dave; I like the chuck mount project you did. I bought an adapter from Littlemachineshop that allows you to use any of the 7x10 lathe chucks on the 109. Since I had a 3 jaw, 4 jaw and face plate the $18 seemed cheap for the adapter. I just had to get it square, face it and then trim it to fit the back of the chucks.

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Old 07-28-2009, 10:33 PM   #7
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Default Re: Craftsman 109 Lathe

Quote:
Originally Posted by Deanofid
I also have a 109, model 20630, besides a couple of other lathes. I've done most of the things described here, plus some. The people who say it's a boat anchor probably just don't know how to listen to the machine. It's not a Heavy 10, and can't be treated like one.

After making a rear bearing, buying a new front one, making a spindle nose adapter that will take a good chuck, replacing all the gibs with brass, putting in a third gib adjusting screw on the cross slide and some proper adjusters for the carriage gib, this little lathe works just fine. It's over 60 years old and it just needed a little fixing up.

You can see my 109 adventures on my Craftsman AA [pages;]


Not a heavy for sure. Bent the first spindle, replaced it with one that had a 3/4 16 nose already cut into it. Allows for the Taig chuck to be mounted. That in itself was a vast improvement.

Don't worry I've gone over every detail of your "109 Adventures" and plan on stealing err, utilizing your ideas.

Quote:
Posted by: black85vette

I bought an adapter from Littlemachineshop that allows you to use any of the 7x10 lathe chucks on the 109.
Also went that route. Worried a bit about how far past the spindle bearing the standard chucks (also from LMS) were. The cantilevered force seemed a tad to much. I did bend a spindle or two before the set in. The Taig chuck brings the work a lot closer to the bearing. Havent bent a spindle since.

Robert
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Old 07-29-2009, 02:27 AM   #8
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Default Re: Craftsman 109 Lathe

Spent some more time with the cross slide. Good, but its pushing 100 degrees here today, and for this part of the globe that's a heat wave. Playing with some water and wet/dry paper seemed like a reasonable thing to do.

used a magic marker to see what the high low spots were. part looks smooth but the marker tells all



Some low spots, Chasing my tail but ran the part over 220 grit down on a piece of glass. Kinda a back and forth routine. Sand a little, check with marker etc. Soon enough the point of diminishing return occurs and its called good. Marker up the mating piece, snugged the gib and ran it from one end to the other. Not really much of an improvement in the action from the earlier, but does show an improved contact area. Couple spots still low, I can live with it.



Small binding? increase in force occurs at the far forward end of travel. Best I can measure the width shows the dovetails are about 0.002 wider at one end than the other. Thought about trying to whittle that down but decided I'd probably hose it up, so leave it be for now.

Robert

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Old 07-29-2009, 04:07 AM   #9
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Default Re: Craftsman 109 Lathe

Yeah, the cross slide on a lathe tends to wear faster where it's most used. So the dovertail is probably a tad wider at the back extreme. Now, if you had a mill, you could take care of that...

Chuck

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Old 07-29-2009, 05:47 AM   #10
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Default Re: Craftsman 109 Lathe

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Yeah, the cross slide on a lathe tends to wear faster where it's most used. So the dovertail is probably a tad wider at the back extreme. Now, if you had a mill, you could take care of that...

Chuck
Its on the list, 6 more months and I meet the 2 year bit on property conversion, no capital gains So what Uncle SAM doesn't get, some vendor will.

Couldn't leave it alone, so spent an hour or so with some 220 grit stuck between the slide and dovetails. Worked the tight end a bit. I know it taint exactly the way to do it. Did free it up a bit and I'd really better leave it alone for now while I'm on the good side of bad.

I'd hate to see what a good one feels like, ruin my whole conception of "Not Bad"

Robert


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