Zyto cross slide screw

[Brian WoodParticipant @brianwood45127]

Actually a very good , practical solution Michael. My Churchill lathe has just such an arrangement for the top slide, the other motion screws are ACME.

Brian

[ianday1972Participant @ianday1972]

Thanks for all the great suggestions. I think I’ll have a look at knocking up an anti backlash arrangement first and see how that goes.

I’ve found 3/8 10tpi acme tap and dies on RDG tools website which will be about £35 if I go down the route of drilling for a larger size. There should be room for it. If I cock that up I could mill out the existing “nut” and add a proper nut to the far end of the lower slide.

I quite like the idea of converting to 3/8 BSF 20tpi. That would be fairly simple and give good control over the slide in use. I might have to incorporate a nut on the handle for attaching an electric screwdriver for any big movements or i might be twiddling that handle all day :-))

Perhaps I’ll post and let you know the outcome. Thanks again.

[jim1956Participant @jim1956]

[David George 1Participant @davidgeorge1]

I have made both leadscrews and nuts for an M Type lathe. The nut was made by turning and screw cutting a phosphour bronze flanged nut which was chased through with a silver steel tap hardened and tempered which i made prior to starting the nut. I have also made a few leadscrews to match the same just by screw cuting a piece of silver steel centered on the end for a rotating steady and also suported by the traveling steady.

David

[ianday1972Participant @ianday1972]

[ianday1972Participant @ianday1972]

You’ve done a great job with those leadscrews David. Sadly your talents exceed mine by some considerable margin, as much as I’d like to have a crack at turning my own screws I haven’t progressed that far yet. I only got my lathe a few months ago and I don’t have a steady rest although it’s on the project list!

I guess I’d have to grind my own tool to cut a square thread? Again this is something I haven’t tried yet.

[jim1956Participant @jim1956]

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