D1-4 Chucks Back Plate Interchangability

The thread has gotten completely off topic so just go ahead. The simple answer is not to leave the screws out. I have found out the stuff I needed to know so I don't care. BTW Toz do you have have a thread on the ones that you made?
Elmo
 
No threads re the ones I made. It sure was fun and I learned much but it is nothing that is not already on the web.
Be glad to help however if asked.
 
I would not recommend a beginner to make them, there is an ansi standard for them, they need to be hardened as well.
 
I found a set at Grizzely for $30.00 shipped. They are ordered. Thanks for the help to all who posted. Installing those things is a piece of cake.
Elmo
 
Elmo said:
I have an Enco 13x40 gap bed lathe that I acquired secondhand. It came with a 3 jaw chuck mounted and a 4 jaw chuck with no backplate. I have no experience with D-4 backplates. Can I change the backplate from one to the other or do I have to buy a backplate for the four jaw and fit it to the chuck? I also would like to have a faceplate also. Sorry if this is a dumb question.
Elmo
Click to expand...

There are no dumb questions only those not asked. I hope you found a good answer to your question. I had to do a Google search to recognize I had used that system on one lathe.

I have worked in my apprentice shop and a couple others that had several different mounting systems and different brands of lathes. I realize the shop's bought auctioned machinery, Not sure about the GE apprentice shop where all their machines came from. I guess they didn't want to see a new machine crashed, I don't recall it happening while I was there for about two years.

Good luck,
 
I remember reading in my Grizzly manual that if the lugs turned you would not be able to remove the chuck.
 
Along with all of this: another question -- does a chuck attach to the spindle the same each time and what would prevent a change in runout?
 
Thoroughly clean surfaces among other things.
 
rustdreamer said:
Along with all of this: another question -- does a chuck attach to the spindle the same each time and what would prevent a change in runout?
Click to expand...
A well fitted D1 series chuck should go back on the pretty much the same each time.
The common practice is to mount the chuck in all possible ways until you have the minimum run out, then use a center punch to add a witness mark to the chuck that lines up with something on the spindle.
In theory, you should be able to remove the chuck with work in it, do some kind of second ops like milling, then remount it to the lathe for finishing.

The main things that will prevent it going back together are in no particular order: chuck not properly fitted, debris/dust on the mating surfaces, tightening one stud before the others are snug. There are plenty of article on fitting a D1 chuck already. When you mount it, turn each stud enough to engage, then turn each one to a light snug, then tighten each one down.
 
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