Ml7 toolpost

Ml7 toolpost

This topic has 7 replies, 5 voices, and was last updated 14 July 2021 at 21:54 by von dutch.

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14 July 2021 at 10:23 #554050
von dutch
Participant
@vondutch
Hi there,does anyone know the dimensions of the base of the tool post stud on a ml7,as in the part that goes up into the topslide not the shaft or thread size.Im fitting a quick change toolpost and the stud is different,so am going to turn up a base to press into the bottom of topslide threaded to suit new stud,if anyone knows the diameter would save me having to take it apart and back together before I make it!
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14 July 2021 at 10:23 #10898
von dutch
Participant
@vondutch
14 July 2021 at 12:33 #554068
ega
Participant
@ega
I have just measured the flange of a similar part at 0.8935" diameter. The flange is 0.220" thick.

I think these studs are a light press fit as standard but am doubtful about the idea of making it by "dead reckoning".
14 July 2021 at 13:48 #554078
von dutch
Participant
@vondutch
Ok chap,when you say similar part,it wasn't an ml7 toolpost stud then?,Ill probably take it apart and have a look just thought someone might no actual size.
14 July 2021 at 15:32 #554097
Richard S2
Participant
@richards2
ML7 tool post base measurements of mine are 0.8735" x 0.192" thickness. The dowel pin is 0.081" diameter.

It is on a PCD of 0.3135" on mine, so nominally 5/16" (0.3125). The pin height is 0.2187" or about 5.5mm-

This is a 1949 model, the dowel pin size is wire/number size 46. Later Myfords may have different size pin.

And I've gone to the effort of providing an image-
14 July 2021 at 15:37 #554098
Roderick Jenkins
Participant
@roderickjenkins93242
Not sure if this is relevant but on my S7 the hole in the QCTP is much larger than the stud in the topslide.

The kit included a top hat washer

This works very will, no movement of the QCTP when tightened down.

HTH,

Rod
14 July 2021 at 15:46 #554099
JasonB
Moderator
@jasonb
Posted by von dutch on 14/07/2021 10:23:22:

Im fitting a quick change toolpost and the stud is different,so am going to turn up a base to press into the bottom of topslide threaded to suit new stud,

If your new toolpost came with a 10mm stud then the 7/16" diameter to fit the Myford ends up quite thin after being tapped M10 so it's usual to make a complete new stud or buy one along these lines
14 July 2021 at 21:54 #554150
von dutch
Participant
@vondutch
Thank you people's for all your information very helpful that is why I come on here,I will either make my own or may order above part.Many thanks to "Richard S2" as well for dimensions and pic,mine also is a 1950 ml7.
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