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CONFUSED (Jacobs Chuck)

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Forum topic by GR8HUNTER posted 04-05-2017 09:12 PM 618 views 0 times favorited 21 replies Add to Favorites Watch
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GR8HUNTER

2953 posts in 548 days


04-05-2017 09:12 PM

Topic tags/keywords: lathe question turning

I own a Jacobs chuck …I would like to put a shaft on it …so as I can use it in my lathe …...ok 1st question I know I need MT2 for lathe …BUT WHAT WOULD BE OTHER END ??
chuck says 6A 33 taper cap. 0-1/2
now another question I had was ….. WILL THIS CHUCK HOLD SMALL WOODEN DOWELS ?
https://www.pennstateind.com/store/CUG3418CCX.html
or would I be better with this one ?
https://www.pennstateind.com/store/LCDOWEL.html
very sorry to ask such a stupid question ….BUT I have no idea what I’m doing …LMAO :<))
PELASE SAVE THIS DUMMY

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN


21 replies so far

View Dutchy's profile

Dutchy

2560 posts in 2004 days


#1 posted 04-05-2017 09:24 PM

I own a Jacobs chuck …I would like to put a shaft on it …so as I can use it in my lathe ……ok 1st question I know I need MT2 for lathe …BUT WHAT WOULD BE OTHER END ??

It depends of what chuck you have. It can be B16 or B 18 but others are also possible.

WILL THIS CHUCK HOLD SMALL WOODEN DOWELS ?
https://www.pennstateind.com/store/CUG3418CCX.html_

No

or would I be better with this one ?
https://www.pennstateind.com/store/LCDOWEL.html_

To me this one is very nice.
Or also possible is this one.

-- https://dutchypatterns.com/

View TungOil's profile

TungOil

745 posts in 330 days


#2 posted 04-05-2017 09:34 PM

What size material are you looking to hold? Is there a reason you are looking at a collet chuck? A collet chuck is a bit limiting. I’d use a standard 3 jaw chuck like this one. More versatile.

https://www.pennstateind.com/store/LCM18X.html

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

View MrUnix's profile

MrUnix

5990 posts in 2034 days


#3 posted 04-05-2017 09:41 PM

That chuck should have a JT33 taper, so all you would need is a MT2-JT33 adapter, like this one on Amazon, or this one from Grizzly – or you could just get this 1/2 inch chuck from HF for about the same price (~$12), which already has the adapter installed (and you can remove it to use with the other chuck if you wanted to).

The first chuck you linked to should be able to handle dowels down to about 1/8”, but the collet system is specifically designed for handling small dowels and rods with more precission. If you are looking to get a lathe chuck, the Barracuda 2 system is just a bit more, but comes with 4 sets of jaws, one of which is a pin jaw suitable for what you want to do.

Cheers,
Brad

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

View GR8HUNTER's profile

GR8HUNTER

2953 posts in 548 days


#4 posted 04-05-2017 09:50 PM



What size material are you looking to hold? Is there a reason you are looking at a collet chuck? A collet chuck is a bit limiting. I d use a standard 3 jaw chuck like this one. More versatile.

https://www.pennstateind.com/store/LCM18X.html

- TungOil

I am thinking of holding 1/4 inch dowels so I could drill center out
but then I thought versatile of being able to do a bowl would be a benefit

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

View lew's profile

lew

11844 posts in 3591 days


#5 posted 04-05-2017 10:19 PM

Tony,
You could make a dedicated size (1/4”) collet chuck.-

http://www.davidreedsmith.com/articles/allwoodcolletchuck/allwoodcolletchuck.htm

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View LittleBlackDuck's profile

LittleBlackDuck

1310 posts in 656 days


#6 posted 04-05-2017 11:46 PM

If you continue to make toys, you will be faced with many opportunities to hollow out dowels of various “standard” denominations. You will find that you cannot go past a collette chuck as it caters for the smaller sized dowels… the one to get depends on the shekels you are prepared to pay

Having said that you will still need to mount a Jacob (or such) chuck on your lathe’s stock end to hold the drill bit. The one you have, where is it from as most Jacobs type chucks I have seen come from drill presses and usually already fitted with a morse taper. If it does is it smaller than your lathes taper. You can buy adapters, eg MT1 to MT2, or MT2 to MT3… not sure about MT! to MT3.

If it doesn’t have a morse taper, I suggest you get the brand and model of your chuck and do a bit of Googling to get the right mail order. Alternatively take the chuck to a reasonable engineering supplier.

-- If your first cut is too short... Take the second cut from the longer end... LBD

View GR8HUNTER's profile

GR8HUNTER

2953 posts in 548 days


#7 posted 04-06-2017 12:06 AM

I think Brad found the one I need here : https://www.amazon.com/Woodstock-D3462-Drill-Chuck-Arbor/dp/B005W0WGPU?tag=vs-home-convert-amazon-20
BUT then he found the nifty one from HF
so I am pretty sure I got that figured out
thanks to all for great reply’s
now I’m still not sure about the chuck I do have a junk independent 1 that I totally hate

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

View LittleBlackDuck's profile

LittleBlackDuck

1310 posts in 656 days


#8 posted 04-06-2017 12:17 AM

If you continue to make toys, you will be faced with many opportunities to hollow out dowels of various “standard” denominations… for cylinders etc. You will find that you cannot go past a good collette chuck as a set caters for all the smaller sized dowels. !


Having said that you will need to mount a Jacob (or such) chuck on your lathe’s stock end to hold the drill bit. The one you have, where is it from as most Jacobs type chucks I have seen come from drill presses and usually already fitted with a morse taper. If it does is it smaller than your lathes taper. You can buy adapters, eg MT1 to MT2, or MT2 to MT3… not sure about MT! to MT3.

If it doesn’t have a morse taper, I suggest you get the brand and model of your chuck and do a bit of Googling to get the right mail order. Alternatively take the chuck to a reasonable engineering supplier.

If it already has some sort of a spindle other than the appropriate morse taper for your lathe, replacing the spindle can be more a pain in the rrrs than the sacrificial shekels of buying a new one.

-- If your first cut is too short... Take the second cut from the longer end... LBD

View toyguy's profile

toyguy

1596 posts in 3672 days


#9 posted 04-06-2017 12:19 AM

For holding small dowel on a lathe the collet chuck would be your best bet, but like stated they are limited.
When it come to turning, there is no one chuck that is best for everything. You need them all :-)
When I am faced with holding small dowels I do use my Jacobs chuck.
I have also used a regular 4 jaw chuck with a bigger piece of square stock, and turned it down to my needs.
Just my 2 cents worth.

-- Brian, Ontario Canada,

View GR8HUNTER's profile

GR8HUNTER

2953 posts in 548 days


#10 posted 04-06-2017 12:25 AM

no ducky no spindle on it just the chuck itself

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

View LittleBlackDuck's profile

LittleBlackDuck

1310 posts in 656 days


#11 posted 04-06-2017 12:41 AM


.....
When it come to turning, there is no one chuck that is best for everything. You need them all :-)
...

- toyguy


BINGO! When it comes to lathes.. they must be female and the chucks are their shoes… never have enough… and they’re not cheap. Even to make a cheap and simple jam chuck you need an expensive chuck to hold it.

PS. I have also found that a “Jacobs” chuck mounted with a live end, with a standard chuck mounted on the other end, provides an even greater opportunity for holding small pieces.

-- If your first cut is too short... Take the second cut from the longer end... LBD

View Markmh1's profile

Markmh1

62 posts in 279 days


#12 posted 04-06-2017 01:18 AM

Mr Unix nailed it.

A 33 Jacobs taper to fit the chuck on one end, the other a MT2 (Morse Taper) to fit the tailstock in your lathe.

Both of these tapers are less than 3 degrees, which is a locking taper. Just clean the back of the chuck with alcohol to clean/degrease, insert the arbor, then give it a good solid rap on your bench. That’s it. The 33 taper will lock the arbor in like a bull’s butt in fly time.

Advance the spindle on your tailstock and slap the MT2 taper in smartly. (You’ll have to line up the tang on the arbor.)

Now you’re in business.

That Jacobs chuck will hold just about anything round up to 1/2 inch.

Mark

Oh yeah, buy a genuine Jacobs brand arbor, A lot of import stuff goes together but will come apart during use.

View Lazyman's profile

Lazyman

1503 posts in 1223 days


#13 posted 04-06-2017 02:40 AM

Instead of buying a collet check, another option is to make your own. Here is an example.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View GR8HUNTER's profile

GR8HUNTER

2953 posts in 548 days


#14 posted 04-06-2017 02:50 AM

would it work with 1 of these in headstock and 1 in tailstock ????
http://www.harborfreight.com/1-2-half-inch-mt2-mini-lathe-drill-chuck-42340.html
1 to hold drill bit
1 to hold dowel :<))

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

View Lazyman's profile

Lazyman

1503 posts in 1223 days


#15 posted 04-06-2017 03:26 AM

Yes. Just realize that the chuck that is holding the dowel will likely damage the sides of the dowel where the 3 jaws grab it.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

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