Myford toolpost stud

[John HaineParticipant @johnhaine32865]

In case anyone else is looking at making a new stud for their Myford-style Dickson QC toolholder. I was hoping to re-use the nicely made tall nut from the original Myford item on my new toolpost. This is advertised as being "threaded 7/16 UNF" on the Myford website.

It isn't. It's 7/16 BSF!

[John HaineParticipant @johnhaine32865]

[David George 1Participant @davidgeorge1]

Hi John Its good to pass on information like that although I don't need one at the moment it is useful to share and save making wrong parts.

David

[DMBParticipant @dmb]

Hi John,

I think that all of the original Myford lathe + accessories used BSF or BA or at least that is so with all of my Myford OEM equipment.

John

[John HaineParticipant @johnhaine32865]

Indeed, I think that's true – I'm just amazed that Myford Limited don't know that the studs they seem to have in stock are not the size they advertise.

[HopperParticipant @hopper]

Maybe nobody told them about their typo yet?

[Michael GilliganParticipant @michaelgilligan61133]

John,

Please forgive me if I have mis-understood your opening post, but:

I think what you have discovered is a case of 'product improvement' by the manufacturer.

Your original nut was made by [for] Myford at Beeston, and the new ones are made by [for] Myford at Mytholmroyd.

All references on the current site seem consistent … including the size of the special 'socket wrench' : **LINK**

https://www.myford.co.uk/cgi-bin/sh000002.pl?WD=nut%207%2016%20toolpost&PN=QUICK%2dCHANGE%2dHEXAGON%2dSOCKET%2dWRENCH%2d%2d78175F%2d3662%2ehtml#SID=153

This may be frustrating for those of us that own 'Beeston' products, but I feel sure that it is the company's prerogative to develop its product.

Many thanks for drawing attention to this, however.

MichaelG.

[John HaineParticipant @johnhaine32865]

Michael, I now have two Myford studs, they are identical, one came with the lathe the other I bought recently but it proved to be too short for comfort for my new tool post. So I bought a 7/16 UNF bolt to make a new stud and found that the nut did not fit. At my local excellent fixings supplier, a quick measurement showed that the Myford stud was 18 tpi, and it clearly has a deeper thread form than unf. Hence most likely to be BSF. The nut supplied measures 17.95 mm a/f, 11/16" a/f is 17.5 mm (which is what they say the wrench is), while the spanner supplied with the lathe is "3/8 whitworth " and is just over 18mm a/f, actually the recommended size for 7/16 BSF.

UNF nuts seem to be 5/8" a/f, and the thinned down head of a 7/16 UNF hex bolt fits snugly across a 16mm wide pocket milled in the base of my toolpost block.

[Michael GilliganParticipant @michaelgilligan61133]

John,

I must be exceptionally dim-witted today … I still can't tell which [if any] of your items were purchased from 'Myford Mytholmroyd' ostensibly as 7/16" UNF.

Whatever … this is clearly a matter where caveat emptor applies in spades !!

MichaelG.

[John HaineParticipant @johnhaine32865]

The second one.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by John Haine on 01/05/2018 12:38:52:

The second one.

.

Thanks for clarifying that, John

MichaelG.

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