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Re: I Need a 3 Jaw Chuck

 

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Your results are quite good, to be sure!. ?I suggest measuring a few different diameters and distances from the jaw tips.

From right at the tips and at least 6 inches out. Assuming you’re using a precision bar, of course.

Jim Irwin



On Apr 21, 2020, at 1:49 PM, Chipbreaker13 <john.lillig@...> wrote:

Novice question here... I see everyone is giving a TIR (Total indicated runout) reading but not how it was measured. Over a year ago I purchased a Sanou 6” 3 jaw chuck along with a backing plate that was predrilled but needed the boss and face machined to fit. When done I put in a precision ground rod and measured it 4” from the tip of the jaws. The TIR reading was .002. I was very happy with the results. Is this the correct way to measure the runout of a chuck? I did it this way because I did not think that measuring?just the diameter of the chuck is accurate enough.

John

Re: I Need a 3 Jaw Chuck

 

Novice question here... I see everyone is giving a TIR (Total indicated runout) reading but not how it was measured. Over a year ago I purchased a Sanou 6” 3 jaw chuck along with a backing plate that was predrilled but needed the boss and face machined to fit. When done I put in a precision ground rod and measured it 4” from the tip of the jaws. The TIR reading was .002. I was very happy with the results. Is this the correct way to measure the runout of a chuck? I did it this way because I did not think that measuring?just the diameter of the chuck is accurate enough.

John
Re: I Need a 3 Jaw Chuck

James Rice
 

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That is what I’ve done on all my Asian chucks. ?I periodically check them but have never had an issue with runout.

James



On Apr 20, 2020, at 4:39 PM, Jody <jp4lsu@...> wrote:

?
Tim, thanks for the input.? For some reason I've always been a little shy of Shars but it seems the quality is pretty good.? I have noticed the sell a TIR of 0.003" line and then a TIR 0.0012" line.

I saw a review of a Sanou chuck on YouTube.? His had about 0.005 run out.? He ended up turning down register on the back plate to allow the chuck to move a bit so he could get the run out down to a satisfactory level.? Then the bolts on the backplate would have to hold it in place.??

That makes me a little nervous even though GP and Andrei speak high of them.
-Jody



Sent via the Samsung Galaxy S10+, an AT&T 5G Evolution capable smartphone


-------- Original message --------
From: TIMOTHY CRAVEN <tim9lives@...>
Date: 4/20/20 4:16 PM (GMT-06:00)
Subject: Re: [atlas-craftsman IO] I Need a 3 Jaw Chuck

I purchased a couple of used 3-jaws from EBay over the past few years. They have been okay. One was pretty tight but others are now in the corner or on some fixture.?
The new Asian chucks have been fairly accurate and better than any of the used.?
? ?Personally, the best and smoothest new chucks I have were purchased from Shars. No tight spots in the scrolls on the Shars.?


On Apr 18, 2020, at 1:44 PM, Jody <jp4lsu@...> wrote:

?
Hey guys,
I have a 12" (101.07403) I've reached a level of frustration having on a 4 jaw chuck and am ready to get a 3 jaw.? I don't mind setting up the work in a 4 jaw but removing the work to check something and then having to re-chuck it is getting tiresome.

There are a few on ebay currently of different brands with the 1 1/2- 8 threads.? (Atlas, Cushman, etc)

Should I try one of the older used chucks or try a new Shars or something similar or stick with an old one?? I would like to find an Atlas 6" diam chuck but they aren't cheap.? Am I rolling the dice either direction with accuracy?
Thanks for the input and advice.
-Jody
Re: I Need a 3 Jaw Chuck

 

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Tim, thanks for the input.? For some reason I've always been a little shy of Shars but it seems the quality is pretty good.? I have noticed the sell a TIR of 0.003" line and then a TIR 0.0012" line.

I saw a review of a Sanou chuck on YouTube.? His had about 0.005 run out.? He ended up turning down register on the back plate to allow the chuck to move a bit so he could get the run out down to a satisfactory level.? Then the bolts on the backplate would have to hold it in place.??

That makes me a little nervous even though GP and Andrei speak high of them.
-Jody



Sent via the Samsung Galaxy S10+, an AT&T 5G Evolution capable smartphone


开云体育

-------- Original message --------
From: TIMOTHY CRAVEN <tim9lives@...>
Date: 4/20/20 4:16 PM (GMT-06:00)
Subject: Re: [atlas-craftsman IO] I Need a 3 Jaw Chuck

I purchased a couple of used 3-jaws from EBay over the past few years. They have been okay. One was pretty tight but others are now in the corner or on some fixture.?
The new Asian chucks have been fairly accurate and better than any of the used.?
? ?Personally, the best and smoothest new chucks I have were purchased from Shars. No tight spots in the scrolls on the Shars.?


On Apr 18, 2020, at 1:44 PM, Jody <jp4lsu@...> wrote:

?
Hey guys,
I have a 12" (101.07403) I've reached a level of frustration having on a 4 jaw chuck and am ready to get a 3 jaw.? I don't mind setting up the work in a 4 jaw but removing the work to check something and then having to re-chuck it is getting tiresome.

There are a few on ebay currently of different brands with the 1 1/2- 8 threads.? (Atlas, Cushman, etc)

Should I try one of the older used chucks or try a new Shars or something similar or stick with an old one?? I would like to find an Atlas 6" diam chuck but they aren't cheap.? Am I rolling the dice either direction with accuracy?
Thanks for the input and advice.
-Jody
Re: I Need a 3 Jaw Chuck

TIMOTHY CRAVEN
 

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I purchased a couple of used 3-jaws from EBay over the past few years. They have been okay. One was pretty tight but others are now in the corner or on some fixture.?
The new Asian chucks have been fairly accurate and better than any of the used.?
? ?Personally, the best and smoothest new chucks I have were purchased from Shars. No tight spots in the scrolls on the Shars.?


On Apr 18, 2020, at 1:44 PM, Jody <jp4lsu@...> wrote:

?
Hey guys,
I have a 12" (101.07403) I've reached a level of frustration having on a 4 jaw chuck and am ready to get a 3 jaw.? I don't mind setting up the work in a 4 jaw but removing the work to check something and then having to re-chuck it is getting tiresome.

There are a few on ebay currently of different brands with the 1 1/2- 8 threads.? (Atlas, Cushman, etc)

Should I try one of the older used chucks or try a new Shars or something similar or stick with an old one?? I would like to find an Atlas 6" diam chuck but they aren't cheap.? Am I rolling the dice either direction with accuracy?
Thanks for the input and advice.
-Jody
Re: 618 milling attachment jaw plates

 

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Thank you very much John. ?I will check with them.
Jay Greer
Yacht Design

On Apr 19, 2020, at 2:50 PM, John Russo <americansmr@...> wrote:

The lathe Altas Craftsman lathe I got recently had the milling ?attachments but no plates. I ordered a set from Clausing. I think it was a decent price, shipping was reasonable and they arrived fairly quickly. Another option if you don’t find them elsewhere. Good luck.?

John

On Sun, Apr 19, 2020 at 5:07 PM Jay Greer <redwitch1@...> wrote:
I did a bad thing the other day. I was cleaning up my bench and dropped the jaw plates for my 618 Atlas lathe milling attachment in the trash bucket and promptly forgot to go for them as soon as I could do so. The phone rang, and someone came to the door to ask a question. I, forgot the plates, until the next day and my clean up wife had thrown the contents of the bucket in the trash that was collected. Now I am in the middle of a job and have not jaw plates. With the virus scare I am not allowed out of my cage so, do any of you have a set you want to sell or duplicate for me?
I have no steel stock on hand to make a set from so can anyone out there help? I would greatly appreciate it!
Thanks
Jay Greer
Boat Design



--
John R. in Virginia Beach

Re: Craftsman 101.07301 / Atlas 618 counter shaft assembly

 

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Any thought to using a treadmill motor or similar AC/DC motor Loads of torque. I picked one up with the control board at the local scrapper. The pulleys take up a lot of space.?




On Apr 20, 2020, at 8:07 AM, Aaron Nash <anash13@...> wrote:

?Good Morning,?

so the lathe I am putting together did not come with the original counter shaft assembly. The previous owner tried to make a motor mount / counter shaft assembly and jerry rigged everything together. He never had it running. I removed and remounted to correct the alignment but the carriage he built is out of aluminum and flexes a little. Also using the motor to weight the assembly does not provide enough tension on the belt.?

I am considering buying an original assembly but the only one i can find is over 200 on ebay. Anyone build any that work well, or maybe some ideas on how to modify mine to add tension? Anyone have a cheap one they want to offload?

thanks in advance

<IMG_20200420_075834.jpg>
Craftsman 101.07301 / Atlas 618 counter shaft assembly

 

Good Morning,?

so the lathe I am putting together did not come with the original counter shaft assembly. The previous owner tried to make a motor mount / counter shaft assembly and jerry rigged everything together. He never had it running. I removed and remounted to correct the alignment but the carriage he built is out of aluminum and flexes a little. Also using the motor to weight the assembly does not provide enough tension on the belt.?

I am considering buying an original assembly but the only one i can find is over 200 on ebay. Anyone build any that work well, or maybe some ideas on how to modify mine to add tension? Anyone have a cheap one they want to offload?

thanks in advance
Re: I Need a 3 Jaw Chuck

 

I made mine 25 or so years ago and do odd jobs almost weekly on the lathe with no problems. ?

Dallas
Re: 618 milling attachment jaw plates

 

What do you need??

Couple little case-hardened plates for the milling vise.? In a pinch I expect could do without the case hardening.? 2.5x7/8x0.25" and the same but 3/8 thick with crossed vee grooves for round stock.

Yrs,
d?
?
Re: 618 milling attachment jaw plates

 

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Oh that stinks.? I lost my set screw on the threaded collar at the back of the lathe spindle.? I saw it fall and cant find it anywhere.

Looks like your milling attachment is useless now, so I could take it off your hands for you for $75.? Haha!
-Jody



Sent via the Samsung Galaxy S10+, an AT&T 5G Evolution capable smartphone


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-------- Original message --------
From: Dave Matticks <dpm100@...>
Date: 4/19/20 6:49 PM (GMT-06:00)
Subject: Re: [atlas-craftsman IO] 618 milling attachment jaw plates

Can't help from here but that sucks!
As far as trash cans go in my "nest", wife won't touch it no matter how full!
Might have a comment though.?

Dave?



Sent from my T-Mobile 4G LTE Device

-------- Original message --------
From: Jay Greer <redwitch1@...>
Date: 4/19/20 16:07 (GMT-06:00)
Subject: [atlas-craftsman IO] 618 milling attachment jaw plates

I did a bad thing the other day. I was cleaning up my bench and dropped the jaw plates for my 618 Atlas lathe milling attachment in the trash bucket and promptly forgot to go for them as soon as I could do so. The phone rang, and someone came to the door to ask a question. I, forgot the plates, until the next day and my clean up wife had thrown the contents of the bucket in the trash that was collected. Now I am in the middle of a job and have not jaw plates. With the virus scare I am not allowed out of my cage so, do any of you have a set you want to sell or duplicate for me?
I have no steel stock on hand to make a set from so can anyone out there help? I would greatly appreciate it!
Thanks
Jay Greer
Boat Design
Re: 618 milling attachment jaw plates

 

Curious why dont you just make your own..
-Sam
Re: 618 milling attachment jaw plates

 

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What do you need?



Sent from my T-Mobile 4G LTE Device

-------- Original message --------
From: Jay Greer <redwitch1@...>
Date: 4/19/20 16:07 (GMT-06:00)
Subject: [atlas-craftsman IO] 618 milling attachment jaw plates

I did a bad thing the other day. I was cleaning up my bench and dropped the jaw plates for my 618 Atlas lathe milling attachment in the trash bucket and promptly forgot to go for them as soon as I could do so. The phone rang, and someone came to the door to ask a question. I, forgot the plates, until the next day and my clean up wife had thrown the contents of the bucket in the trash that was collected. Now I am in the middle of a job and have not jaw plates. With the virus scare I am not allowed out of my cage so, do any of you have a set you want to sell or duplicate for me?
I have no steel stock on hand to make a set from so can anyone out there help? I would greatly appreciate it!
Thanks
Jay Greer
Boat Design
Re: 618 milling attachment jaw plates

 

开云体育

Can't help from here but that sucks!
As far as trash cans go in my "nest", wife won't touch it no matter how full!
Might have a comment though.?

Dave?



Sent from my T-Mobile 4G LTE Device

-------- Original message --------
From: Jay Greer <redwitch1@...>
Date: 4/19/20 16:07 (GMT-06:00)
Subject: [atlas-craftsman IO] 618 milling attachment jaw plates

I did a bad thing the other day. I was cleaning up my bench and dropped the jaw plates for my 618 Atlas lathe milling attachment in the trash bucket and promptly forgot to go for them as soon as I could do so. The phone rang, and someone came to the door to ask a question. I, forgot the plates, until the next day and my clean up wife had thrown the contents of the bucket in the trash that was collected. Now I am in the middle of a job and have not jaw plates. With the virus scare I am not allowed out of my cage so, do any of you have a set you want to sell or duplicate for me?
I have no steel stock on hand to make a set from so can anyone out there help? I would greatly appreciate it!
Thanks
Jay Greer
Boat Design
Re: 618 milling attachment jaw plates

 

The lathe Altas Craftsman lathe I got recently had the milling ?attachments but no plates. I ordered a set from Clausing. I think it was a decent price, shipping was reasonable and they arrived fairly quickly. Another option if you don’t find them elsewhere. Good luck.?

John

On Sun, Apr 19, 2020 at 5:07 PM Jay Greer <redwitch1@...> wrote:
I did a bad thing the other day. I was cleaning up my bench and dropped the jaw plates for my 618 Atlas lathe milling attachment in the trash bucket and promptly forgot to go for them as soon as I could do so. The phone rang, and someone came to the door to ask a question. I, forgot the plates, until the next day and my clean up wife had thrown the contents of the bucket in the trash that was collected. Now I am in the middle of a job and have not jaw plates. With the virus scare I am not allowed out of my cage so, do any of you have a set you want to sell or duplicate for me?
I have no steel stock on hand to make a set from so can anyone out there help? I would greatly appreciate it!
Thanks
Jay Greer
Boat Design


--
John R. in Virginia Beach
Re: I Need a 3 Jaw Chuck

 

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For re-mounting the chuck you don’t really have to remember which jaw was where so long as we are talking one of the Atlas lathes because they all have single-start threaded spindles.? I guess that a case could be made that you should start with both the spindle and the chuck always at the same angular position because there is a little clearance between the male and female register areas.? But unless one or both are particularly sloppy, I can’t see it making enough difference to matter.? With the single start thread, the chuck and spindle naturally always end up in the same relative positions.? You should probably do as I generally do and run the chuck onto the threads until the bottom, and then back up about and inch or two and “ring” it home by pushing abruptly on whichever jaw is closest to top with your right thumb.

?

It is of course critical that the three jaws are always mounted in the same slot or on the same master jaw.? The three slots and the three jaws (or six if they are 2-piece) should all be marked by the chuck maker with 1, 2 and 3.? And if you need to remove a part from the chuck before you are finished with it, then you need to make note of where Jaw #1 is or alternatively which number jaw is where and mark the part appropriately so that you can put it back in as it came out.

?

Robert Downs

?

From: [email protected] [mailto:[email protected]] On Behalf Of perry7122
Sent: Sunday, April 19, 2020 07:31
To: [email protected]
Subject: Re: [atlas-craftsman IO] I Need a 3 Jaw Chuck

?

Robert , I haven't been concerned because of the type work I do but was wondering.

? ? Once the chuck is set up with a machined back plate and you have zero runout do you have to mark the plate and spindle to be sure you get to back in the same place when removed and reinstalled? Seem's that differences in tightening would change the location somewhat.

?

I appreciate all you do in running this group.

?

?

?

| Contact Group Owner | Unsubscribe [wa5cab@...]

_._,_._,_
618 milling attachment jaw plates

 

I did a bad thing the other day. I was cleaning up my bench and dropped the jaw plates for my 618 Atlas lathe milling attachment in the trash bucket and promptly forgot to go for them as soon as I could do so. The phone rang, and someone came to the door to ask a question. I, forgot the plates, until the next day and my clean up wife had thrown the contents of the bucket in the trash that was collected. Now I am in the middle of a job and have not jaw plates. With the virus scare I am not allowed out of my cage so, do any of you have a set you want to sell or duplicate for me?
I have no steel stock on hand to make a set from so can anyone out there help? I would greatly appreciate it!
Thanks
Jay Greer
Boat Design
Re: Need Pulley for Craftsman Speed-Reducing Attachment

 

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Should have added this: Heat longer keeping hardening material present and you’ll have hardness at depth. The hotter and the longer time the deeper and harder the case will be. Be careful with thin parts to avoid hardening through to glass-like hardness/brittleness.

Jim Irwin



On Apr 18, 2020, at 2:44 PM, Jim Irwin via <jimairwin@...> wrote:

This hardening is a diffusion?process. As such the depth is a function of temperature & time. Raise either & it's deeper. Also depends on availability of hardening material. (So time at temp with that present.) Heat to red and apply hardener and case will be hard but shallow. Heat longer and material diffuses into the steel, so softening somewhat.

Hope that's clear.

On Sat, Apr 18, 2020, 1:52 PM Dave Matticks <dpm100@...> wrote:
It will give a really hard abrasion resistant case but still soft and "deformable" under that .001/.002 surface hardness. Done this before as well.
Water quench will probably give a higher hardness, still not deep though.
Very nice project no matter what!

Dave
On April 18, 2020 at 12:38 PM?exerpd+groupsio@...?wrote:?

Dave Matticks?– I was not able to find a left hand wing nut.? I used Fusion 360 to do the drawings.? Instead I purchased a hand full of right hand wing nuts from McMaster-Karr in the next smaller size.? Then just drilled it out and re-threaded in left hand 3/8”.? The body and jaws are 1018 steel.? I have done some case hardening of small gun parts.? Don’t know whether to case harden just the jaw faces or the whole thing?? It is just a hand vise after all.? May just use some Brownell’s and try the jaws first to see how I like it.? Heat jaw face to cherry red, dip in the case hardening, re-heat to cherry red for a couple of minutes, quench in oil, clean up…………? See what happens.
--?
Bruce Varner

?
Re: I Need a 3 Jaw Chuck

York Powell
 

My understanding is that Buck Chucks have a sort of 4 jaw type adjustment that would have a positive hold on the position of the chuck. If you are leaving room for movement and expecting the mounting bolts to hold it in place seems very different.
Re: I Need a 3 Jaw Chuck

 

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McMaster Carr has a big selection of brass screws in different flavors.?
Soft tip as well.

Dave?



Sent from my T-Mobile 4G LTE Device

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-------- Original message --------
From: Jody <jp4lsu@...>
Date: 4/19/20 09:12 (GMT-06:00)
Subject: Re: [atlas-craftsman IO] I Need a 3 Jaw Chuck

I agree? that 4 jaw is best in some circumstances.? ?If I ever get around to doing any barrel threading work, the 4 jaw will be the way to go.? Thats one reason I made a lathe spider.? Just need to find some brass fasteners. The big issue there is pass thru diameter.

But for work that doesn't require high accuracy or cocentricity and work that may be removed multiple times, I need a 3 jaw.??

I do one day plan on making a ER32 collect chuck.? GP has a drawing for one .? I also found another real good drawing for one but I cant find it now.? I have the one from GP printed out and ready to go.
Thanks Jody




Sent via the Samsung Galaxy S10+, an AT&T 5G Evolution capable smartphone


-------- Original message --------
From: S Johnson <cascadianroot@...>
Date: 4/18/20 8:19 PM (GMT-06:00)
Subject: Re: [atlas-craftsman IO] I Need a 3 Jaw Chuck

I learned on a lathe with only a 4-jaw. The initial days were madness but now I can dial in a 4-jaw faster than many can select the right collet for their collet chuck. Plus on some work the 4-jaw is the only way.
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