- Thread starter Gareth J
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Screwdriver
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Can I just say...
AHAHAHHAHAHAHAHAHAHAHAHAHAHAHAhahahahahahahahahahahahahahahahaaaaaaaaaaaaaa..................
Here's mine, a Mk2 from 1970:
View attachment 59825
I paid a sight less than £1450 for it - but rather more than £250
Nice. Is that a 6mm pitch thread by any chance?
If so, I have a mint Ainjest rapid threading unit that will fit. Doesn't fit mine...
S.
CRB
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yea like "whats the bed like"...ffs
?Does it include a sludge pump?
Wedg1e
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doubleboost
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Very tidyCan I just say...
AHAHAHHAHAHAHAHAHAHAHAHAHAHAHAhahahahahahahahahahahahahahahahaaaaaaaaaaaaaa..................
Here's mine, a Mk2 from 1970:
View attachment 59825
I paid a sight less than £1450 for it - but rather more than £250
skotl
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Can I just say...
AHAHAHHAHAHAHAHAHAHAHAHAHAHAHAhahahahahahahahahahahahahahahahaaaaaaaaaaaaaa..................
Here's mine, a Mk2 from 1970:
View attachment 59825
I paid a sight less than £1450 for it - but rather more than £250
Nice - if anyone is emailing the plonker they should include a link to that image to show how deluded he is.
Or possibly just a link to this entire thread.
Screwdriver
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I'd have to check, could be interested
If yours is a metric lathe, then it will. Have a look on lathes.co.uk then get back to me
Wedg1e
They call me Mr. Bodge-angles
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If yours is a metric lathe, then it will. Have a look on lathes.co.uk then get back to me
Well it has the dual-reading leadscrew dials and standard metrinch gearbox but not sure of the leadscrew pitch...
Screwdriver
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I'm so rubbish at cutting threads, I usually try and find a decent bit of a bolt and weld it onto a shaft 
I've been wanting an Ainjest for years but it don't fit my old fifties imperial. Almost certainly fits yours...
S.
I've been wanting an Ainjest for years but it don't fit my old fifties imperial. Almost certainly fits yours...
S.
Screwdriver
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Pretty much any metric Colchester/triumph with a 6mm pitch lead screw (I think all metric lathes are 6mm)
Wedg1e
They call me Mr. Bodge-angles
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According to Lathes.co.uk:
"The leadscrew on all Mk. 1 and Mk. 2 Students and Masters was 6 t.p.i. (with no metric alternative) and was used only for thread cutting and not power feeds..."
which suggests the Ainjest won't work on a Student of any persuasion ?
I'll check mine in the morning, the internet isn't always right
Wendelspanswick
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I have a Colchester Student MK 2 1/2 (round top but with the safety apron). I will measure the lead screw on it to see if it's metric or imperial.According to Lathes.co.uk:
"The leadscrew on all Mk. 1 and Mk. 2 Students and Masters was 6 t.p.i. (with no metric alternative) and was used only for thread cutting and not power feeds..."
which suggests the Ainjest won't work on a Student of any persuasion ?
I'll check mine in the morning, the internet isn't always right
Screwdriver
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Well according to this website http://www.chainganger.co.uk/T2000/S1800gearbox.pdf the 1800 Student metric is a 6mm pitch. I think Tony (from lathes.co.uk) said virtually any metric Colchester/Triumph/Clausing would be 6 mm pitch but I'll get him to confirm.
Incidentally, just looking at that PDF makes me break into a sweat when thinking about screwcutting and keeping the half nut engaged all the time seems a right faff. That's why I desperately wanted this Ainjest; you set the pitch on the unit and it takes care of everything for you, even disengaging at the end of a cut. Apparently you can run the machine (at high speed!) right up to a shoulder while screwcutting then just wind it back manually and go for the next cut. Any position on the lead screw will always be correct because the Ainjest has it's own gear box.
I have seriously considered swapping out the lathe for a metric one, just so I can use this unit!
S.
Incidentally, just looking at that PDF makes me break into a sweat when thinking about screwcutting and keeping the half nut engaged all the time seems a right faff. That's why I desperately wanted this Ainjest; you set the pitch on the unit and it takes care of everything for you, even disengaging at the end of a cut. Apparently you can run the machine (at high speed!) right up to a shoulder while screwcutting then just wind it back manually and go for the next cut. Any position on the lead screw will always be correct because the Ainjest has it's own gear box.
I have seriously considered swapping out the lathe for a metric one, just so I can use this unit!
S.
What sort of money do they cost??
Screwdriver
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Ah, a value question, back on topic then! They are excruciatingly rare and I've only ever seen a couple for sale, typically over a grand (!). But if you bought a lathe with one fitted, you'd get it for free. I sincerely doubt if anyone had one which fitted their lathe, they'd ever want to remove it.
Having said that, there's one on lathes.co.uk and I know the seller is willing to tango...
Pete.
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I don't think I'd have the guts to run hard up to the shoulder at high speed with any kind of auto cut-off. The saddle and apron has a lot of mass and even if the disengage works exactly the same every time with the tool load increasing every pass I'd still be worried about the momentum of the carriage and apron running it into the shoulder.
