GBD
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Ive had a talk with another member here, and I figured some people here on LPF own or plan to start out a lathe. So I mostly post this in hopes to give others a general idea how to do this.
(also using this thread to answer a question rather then write a mile long PM).
First things first, is to loosen the chuck itself with your key, and keep doing so until the jaws will become loose, which at that point will freely slide out (as they are no longer on the screw)
After you done that, you will have the bare chuck.. This particular guide was made for a standard 3 jawed chuck.. there will be variations and different procedures for other chucks.
Turn your key some more, until you see the outermost rung of the worm screw inside, you will see where it slopes off as in the picture.
This will come in handy later, as that is where you will place your first jaw in.
Now looking at the jaws themselves, you can see that the screw patterns do not exactly match each other, this is for a reason
They are meant to go in an order, the trick I do with 3 jawed chucks is to align them all level on thier slots, and line it up accordingly from the shortest to longest:
While the jaws are all the same lenth, this is done to compensate as you tighten the chuck, so everything tightens down evenly and level.
Here is the order I speak off once the slots are lined up:
Remember the outer most rung of the worm screw I said about earlier?
You will want to just firmly drop your jaw into the hole, then give a slight crank of the key for the screw to latch onto the first slot of the jaw.
Repeat this process in the order of your jaws:
And your end result will look something like this when fully tightened:
If the jaws are put in the incorrect order, you will more then likly end up with mis-aligned jaws and will be not centered like so:
(Sometimes you can do this intentionally to get a offcenter rod in some round stock.. but for the most part, it should be all centered and not like the picture)
Hope that helps some people out.
Cheers.
(also using this thread to answer a question rather then write a mile long PM).
First things first, is to loosen the chuck itself with your key, and keep doing so until the jaws will become loose, which at that point will freely slide out (as they are no longer on the screw)
After you done that, you will have the bare chuck.. This particular guide was made for a standard 3 jawed chuck.. there will be variations and different procedures for other chucks.
Turn your key some more, until you see the outermost rung of the worm screw inside, you will see where it slopes off as in the picture.
This will come in handy later, as that is where you will place your first jaw in.
Now looking at the jaws themselves, you can see that the screw patterns do not exactly match each other, this is for a reason
They are meant to go in an order, the trick I do with 3 jawed chucks is to align them all level on thier slots, and line it up accordingly from the shortest to longest:
While the jaws are all the same lenth, this is done to compensate as you tighten the chuck, so everything tightens down evenly and level.
Here is the order I speak off once the slots are lined up:
Remember the outer most rung of the worm screw I said about earlier?
You will want to just firmly drop your jaw into the hole, then give a slight crank of the key for the screw to latch onto the first slot of the jaw.
Repeat this process in the order of your jaws:
And your end result will look something like this when fully tightened:
If the jaws are put in the incorrect order, you will more then likly end up with mis-aligned jaws and will be not centered like so:
(Sometimes you can do this intentionally to get a offcenter rod in some round stock.. but for the most part, it should be all centered and not like the picture)
Hope that helps some people out.
Cheers.
Last edited:
Kudos!
