Hy Ryan Sorry for the late reply.? ? As to chucks for Daltons.? Lot 2 3 4 and 5 came from the factory with four inch three jaw chucks and five inch four jaw chucks.? There are a lot of good import chucks available in these sizes but the biggest problem you will face is a back?plate to mount them.? Dalton's 1 1/4 - 12 spindle nose is a bastard sort of and there are no commercially available?back plates to be had.? So if the one your current chuck is on is not usable on a new chuck you will have to make a new one from scratch.? I have made a couple in the past. but requires a much larger lathe than the small Daltons.? A Lot 6 or Dalton 9 could handle the job or something the size of a 9 inch South Bend. Also you will have to go to a material outlet to find a piece of cast iron. What you need to do Ryan is find or make a friend that has a larger lathe and is willing to make you a new back plate.? At one time in the past I did know a guy that was having lathe parts made in China.? I provided him with a drawing and he had a sample run of 15 back? plates made and he offered them on eBay like all the rest of the parts he was having made.? Problem was he was only able to sell five or six over a period of two years so?he did not have any more made.? I did end up with most of them but they have long been sold to Dalton owners though I did use several of them myself.? Was kind of sad that that project failed as the back plates were really well made from good material.? Pictures are of a back plate I made for John Glands Lot 4 restoration.? This was over 20 years ago and poor John plassed on two years ago and have no idea of what ever happened to his lathe. On Tue, Oct 8, 2024 at 3:00?PM Ryan Bardsley via <rbardsley=[email protected]> wrote: Okay, I have gotten to the point where I actually need to remedy my issue. The 3-jaw chuck on my Lot 4 is not longer able to hold stock true enough that I can¡¯t make up the difference with one of my other lathes. I work on very small parts and often use the Dalton to rough in larger material that I can finish up on a smaller lathe. From what I can tell, the jaws on the chuck no longer grip the workpiece evenly. Typically I turn most of the surfaces down to spec and then cut the part off. However, yesterday, I needed to use the whole OD of a piece of stock and turn a small shaft down in the center.? When I parted the piece off and put it in my other lathe, I noticed how off the chuck was.
4 jaw back plate in 4 jaw chuck.JPG
3 Jaw back plate only needs final machining.JPG
Back side of 4 jaw.JPG
Copy of J Gs lathe almost done.JPG
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