4 Jaw Chuck Adaptor Plate For Lathe

[Jigantor]

My lathe did not come with a independant 4 jaw chuck and I have been unable to purchase an adaptor plate to suit any chucks on the market.
Yesterday I went to my aluminium store and purchased some offcuts. Today I started to lathe the adaptor plate for a ind 4 jaw chuck I bought new at an auction last week for $20.00.

Ji

[aametalmaster]

Nice work. I have made dozens of adaptors but from cast iron or steel. Wish i had an aluminum offcut store by me...Bob

[Jigantor]

I paid $5 for the offcut I used. It was the end of a length that had been band sawed both sides. Needed to be trued both sides before any real work could be started. Finished the adaptor today but ran out of time to post the images. I made the two connections machine fit so they have to be heated to install that way there is no runout.
Our aluminium store does sell offcuts but at the same rate as normal. Even though they do not have to cut it or true it. Still I got what I wanted.
Thanks for the kind words Bob.

Ji

[WyoRoy]

Jig,
Just what sort of mount is that?

[aametalmaster]

Jig,
Just what sort of mount is that?

Looks like a plate to bolt the chuck to the lathe spindle which has a smaller plate since it isn't threaded...Bob

[WyoRoy]

Looks like a plate to bolt the chuck to the lathe spindle which has a smaller plate since it isn't threaded...Bob

Bob, I'd still be interested in knowing how the mounting plate mounts to the lathe. I've never seen a lathe not have a mount before, whether threaded or otherwise.

[Meltedmetal]

WyoRoy,
If I'm not mistaken the second pic shows the lathe driver plate and pics 3 shows the 3-jaw chuck mounted on the lathe. Maybe he will show us the 4-jaw mount to the adapter plate in detail. Looks like the original chuck bolts onto the driver and is kept concertric but the raised boss on the driver which mates to the back of the chuck.
Meltedmetal

[Jigantor]

The lathe's spindle has an end plate that the original 3 jaw chuck was bolted too. This plate has a male boss and the chuck had a female boss if you will. I have matched the original boss and bolt connection. The new 4 jaw has a female boss and a 4 bolt pattern. I matched that as well to get what we have now.

Ji

[Jigantor]

It is not just to improve the look of my workshop but to allow for square stock and odd shaped items to be turned. With that said here it is holding some square stock ready for carving.

Ji

[kevhead63]

Looks good, nice job,

[Jigantor]

Thanks for the kind words Kev

Ji

[aametalmaster]

It is not just to improve the look of my workshop but to allow for square stock and odd shaped items to be turned. With that said here it is holding some square stock ready for carving.

Ji

Looks like to need to find a bigger 4 jaw too. Watch turning bigger sq parts with the jaws reversed and without a center in the tailstock holding up the other end as it will come flying out of the chuck. That i do know very well...Bob

[Jigantor]

Hi Bob,
Well I did buy a 6 inch 4 jaw chuck at the auction too but I only turn small square parts most of the time. The section I photographed in the new chuck I had sitting on my bench and will only require squaring the ends (will square in the mill less setting up). Being hollow section I am unsure how you could support it. I normally support anything over 2 inches long as they get pushed away by the cutter that I have found.

My short range sight is evaporating but my nose is not long enough to keep sliding the glasses down to compensate. Has any one set up a webcam to a monitor for viewing the cutting area? If so what did you use I am investigation digital microscopes at the present that are Wi Fi so no wires and can be viewed on my Ipad.

Ji

[aametalmaster]

You could make a big dia bull nose center to push in on the sq tube. I made one for larger parts...Bob

[Jigantor]

Thanks Bob that would do it

Ji