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New saddle plates for my 7x12.

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websterz:
I have a nice variety of material choices available to me...360 brass, bearing bronze, mild steel, drill rod, nylon, 6061 T6...maybe even some cast iron bits I can mill down to suit.

I want to redo the plates on this lathe so I can adjust them from the top with self-locking capscrews for vibration resistance. I do a lot of parting work and keeping the saddle snug is a real chore with the current setup. The original plates are brittle Chinese cast iron which will eventually give out and crack. I want to replace them before that. What material, or combination or materials, will give the best result?

bogstandard:
W,

Can you show or explain a bit more on what you mean by 'saddle plates'.

Once we know exactly what bit it is, I am sure we can make a good recommendation for you.

John

ozzie46:


 Bogs, I believe he is referring to the gibs. The ones you replaced  with tapered gibs on Darrens lathe.

Ron

bogstandard:
Thanks Ron,

Then I would suggest a bit of a read from this part of the post,

http://madmodder.net/index.php?topic=627.msg3898#msg3898

Also shows a site where you can go to to read up about it.

Bogs

websterz:
Yeah...gibs...not sure what I was thinking.  :scratch: I don't really think of them as gibs since they are flat plates...I had dovetail gibs on my mind.  :bang:
Looks like I have a bit of work ahead of me. I should have my surface grinder running in a day or two...might as well go full Monty on the lathe and start from the bottom up.  :ddb: With a bit of careful setup wizardry I can grind the critical surfaces of the casting, as my mini-mill is too small to do it the other way round.

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