Thank you for the kind welcome and helpful replies gentlemen.
The threads which retain both of the wheels on the shaft are definitely Right Hand, 12mm X 1.75mm pitch, a standard ISO 12mm nut screws on easily, I have just run a good 12mm X 1.75mm die on the threads at the stone wheel end AND the honing wheel end, which suggests to me that this is a home made (or improvised) shaft. The shaft is exactly 16mm diameter steel. Bear in mind, I am only 5 miles from the home of the British nuclear submarine shipyard, It's quite likely a new shaft could have been 'knocked up' during a tea break in 'The Yard', it's not unknown...
I need to clean off the various parts so I can see more clearly what I have. Given the age of this machine I will remove the motor and check the wiring, it has a white power lead which does not seem to me to be authentic. What colour would the original power lead have been?
Have just had a quick look at the honing wheel, it appears to be plastic with steel mounting plate to fit the main shaft, a rubber tyre and some sort of skin on the flat side, very difficult to tell what it is but seems like the side layer COULD be leather stuck to the plastic wheel. Will clean and examine more carefully later today. The material on the rim seems to be rubber with some slight radial cracks close to the inside edge of the 'tyre' the outer part of the 'tyre' seems free of cracks but is quite uneven across it's width, it had a worn line around one side about 14mm (9/16") wide.
I will drill out the shaft from the stone wheel later and see what the situation is with the remaining hole in the stone wheel, I am not expecting a good outcome, the crush effect of expanding rust has probably damaged the stone so I expect to have to sleeve the hole then bore the sleeve accurately to retain concentricity.
The stone wheel is 233mm in diameter and 48mm wide or thick.
I shall explore the method of uploading photographs and try to show you some features of the machine.
Enough chatting, things to do!
Regards, Robert
The threads which retain both of the wheels on the shaft are definitely Right Hand, 12mm X 1.75mm pitch, a standard ISO 12mm nut screws on easily, I have just run a good 12mm X 1.75mm die on the threads at the stone wheel end AND the honing wheel end, which suggests to me that this is a home made (or improvised) shaft. The shaft is exactly 16mm diameter steel. Bear in mind, I am only 5 miles from the home of the British nuclear submarine shipyard, It's quite likely a new shaft could have been 'knocked up' during a tea break in 'The Yard', it's not unknown...
I need to clean off the various parts so I can see more clearly what I have. Given the age of this machine I will remove the motor and check the wiring, it has a white power lead which does not seem to me to be authentic. What colour would the original power lead have been?
Have just had a quick look at the honing wheel, it appears to be plastic with steel mounting plate to fit the main shaft, a rubber tyre and some sort of skin on the flat side, very difficult to tell what it is but seems like the side layer COULD be leather stuck to the plastic wheel. Will clean and examine more carefully later today. The material on the rim seems to be rubber with some slight radial cracks close to the inside edge of the 'tyre' the outer part of the 'tyre' seems free of cracks but is quite uneven across it's width, it had a worn line around one side about 14mm (9/16") wide.
I will drill out the shaft from the stone wheel later and see what the situation is with the remaining hole in the stone wheel, I am not expecting a good outcome, the crush effect of expanding rust has probably damaged the stone so I expect to have to sleeve the hole then bore the sleeve accurately to retain concentricity.
The stone wheel is 233mm in diameter and 48mm wide or thick.
I shall explore the method of uploading photographs and try to show you some features of the machine.
Enough chatting, things to do!
Regards, Robert