Quick-change toolpost for a Zyto lathe – what size?

Quick-change toolpost for a Zyto lathe – what size?

This topic has 7 replies, 5 voices, and was last updated 6 June 2022 at 14:12 by Lee Rogers.

Viewing 8 posts - 1 through 8 (of 8 total)

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5 June 2022 at 18:00 #600729
David Jenkins 4
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@davidjenkins4
I am busy bringing my Zyto 3.375" lathe up to a useable state, and I've managed to get it working very nicely with a VFD.

My next mission is to look for a quick-change toolpost system, but I have absolutely no idea about the best size to get. Has anyone with the same lathe fitted a QC post and, if so, which one did you get?
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5 June 2022 at 18:00 #20710
David Jenkins 4
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@davidjenkins4
6 June 2022 at 09:48 #600777
Brian Wood
Participant
@brianwood45127
Hello David,

I imagine it will be of similar size to the ones that fit Myford lathes and suggest you look at those.

Regards Brian
6 June 2022 at 09:52 #600778
David Jenkins 4
Participant
@davidjenkins4
Old Myfords, perhaps (ML1, etc) but not sure whether the centre height being 1/8" lower would make a difference?
6 June 2022 at 10:24 #600781
DiogenesII
Participant
@diogenesii
That really depends on the height of the topslide 'deck' relative to the spindle centre – IIRC an ML7 has 5/8"..
6 June 2022 at 10:28 #600782
David Jenkins 4
Participant
@davidjenkins4
I'll have to go and check it!

Thanks for the info.
6 June 2022 at 11:11 #600789
John Hinkley
Participant
@johnhinkley26699
David,

As has already been said, it is all a matter of measurement. Take into account the size of your tooling, height of the toolpost mounting surface to centre height and compare with the dimensions for a given QCTP. For example, my lathe is a generic 9 x 20 Asian clone and I use a model 000 wedge-type from Uncle Ketan's Emporium. I'm very pleased with it. Have a google for videos on YouTube. There are several on there that explain the method of selecting the correct size.

Wedge-type QCTP Model 000

That page also has links to articles on fitting such a toolpost to either a mini lathe or a Myford, so I'm pretty sure that size would suit your Zyto.

I dare say you could get away with a larger one, but I don't see any benefit to be gained by doing so.

John
6 June 2022 at 14:12 #600806
Lee Rogers
Participant
@leerogers95060
I have the small Myford compatible Dickson from Chronos on my Drummond B Type .which is a bit heavier than the Zyto but comparible, Its fine for most everyday lightish jobs but I still keep a simple shimmed holder for''heavy'' work without the topslide , the key being the extra rigidity. Heavy is of course a relative term but I'm sure you get the gist .
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