Small MT2 Tailstock Chuck for ML7

[JasonBModerator @jasonb]

I'd put the hole into the faced off bar not try and drill the apex. Turn the taper after drilling.

[Dr_GMJNParticipant @dr_gmjn]

Posted by JasonB on 28/01/2022 12:28:32:

I'd put the hole into the faced off bar not try and drill the apex. Turn the taper after drilling.

Yes, I was just describing the end result rather than proposing trying to drill at an apex.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Dr_GMJN on 28/01/2022 10:21:32:

Posted by Michael Gilligan on 28/01/2022 09:37:18:

Posted by Dr_GMJN on 28/01/2022 08:25:44:

Posted by JasonB on 28/01/2022 07:19:19:

[…]

Has the Myford got a through hole […]

Yes, the tailstock MT2 taper is hollow if that’s what you mean? […]

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Hence my [presumably inappropriate] suggestion, yesterday.

MichaelG.

Sorry Michael, I thought you suggested a method of using a hollow MT2 taper and making some kind of sliding arrangement, or the tailstock mechanism you linked to. You didn't mention a collet?

Jason I think was suggesting a simple tailstock collet to hold the ARC supplied sensitive chuck – thus reducing overhang and weight of having a second chuck to hold the first?

Unless I've misunderstood, these are two completely different concepts in terms of cost and complexity?

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Just to be clear … What I was suggesting [and the reason behind my using those selective quotations] was to bore a MT blank to accept a free-sliding shaft which accepts watchmaker’s collets. The mechanism shown in the Bergeon example is, to my mind, ‘optional’ … at small diameters, pushing with a fingertip should suffice, and is the most ‘sensitive’ feed mechanism available.

MichaelG.

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