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| Bluechip:
Norman is absolutely right. I've had Myfords since 1971 [ a ML7/T and a S7 ] and it's certainly possible to unscrew a chuck. Done it on quite a few occasions. Happens usually when winding a die off a coarse thread eg. 1/2" BSW , M12 etc. As posted earlier this is at low back-gear RPM so it does not drop on the bed. I cannot comment about Boxfords, I have never used one. Dave |
| Fergus OMore:
--- Quote from: Bluechip on May 28, 2015, 04:16:59 AM ---Norman is absolutely right. I've had Myfords since 1971 [ a ML7/T and a S7 ] and it's certainly possible to unscrew a chuck. Done it on quite a few occasions. Happens usually when winding a die off a coarse thread eg. 1/2" BSW , M12 etc. As posted earlier this is at low back-gear RPM so it does not drop on the bed. I cannot comment about Boxfords, I have never used one. Dave --- End quote --- My experiences and certainly whilst reversing die threading and tapping - hence my reference to preferring the use of collets. Again, my experience(s) with Boxfords was limited to having to spend my time- reaming out buggered tailstock poppets with my own reamer. Not the end of the world but a nuisance to have to mend the mistakes of others! As far as the control box on the Seven series( and the ML10???), I believe that the old stuff is suspect electrically and here, I am certainly ready to be advised- right or wrong. Mine is '3 phase' and I used more modern switches on earlier lathes. One must now make one's own judgement. Regards Norman |
| Ginger Nut:
I would ask why then are all new lathes & mills fitted with a reversing switch? A simple fix or preventative is to use a grub screw in the backing plate mandrel area for when using the lathe under load as is done with wood lathes. As for bumping the switch this for me became one area I had to be very aware of and is why it has been mounted where it has. If the lathe is stopped for other than a quick check then the main stop switch is turned off and during down time now the power switch turned off at the wall. Safety is paramount not just for myself but anyone who walks into my workshop/shed. Those who have no respect for safety have been told do not come near. |
| Fergus OMore:
I understand your comments but let me try to explain? The first point is that the ML7 is a very old model makers lathe and came- without any chucks. It came with a faceplate and hard and soft lathe centres. No more! If you wanted to have chucks, Myford supplied them as extras and NONE had back plates. My 4 chucks are all solid bodies. Fitting grub screws or whatever is just as much- an accessory. Again, you have missed the fact that the ML7 is just as much a woodturning lathe as a metal turning lathe. Model engineers made their own moulds using simple rests. Sorry, but these are facts in what was- another world. As for fitting a reversing switch to a mill or a lathe or a whatever, it is your choice and no model engineer worth his grubby finger nails didn't add his own accessories and modifications. I probably have 32gb worth of mainly Myford articles and a workshop full of either bought out or home made goodies. I can say that a reversing switch on a mill was not put on for screwed chucks as per Myford lathes. If you want to do it- well, you can. The only screwed spindle was the one on the Westbury ones. Mills, at the time of the first Myford ML7's were a thing for the factory and the super rich an in shed or back of garage. I made my Westbury from homemade castings. Life was like that. I must apologise for what might be 'trying to teach you to suck eggs' and this is certainly not my aim. I merely have corrected what appears to be misconceptions. There is no reason why you cannot do exactly what was done in the past on a lathe that was essentially out of World War 2. Unquestionably, it will still give you excellent service and it can be restored to perform as well as more modern lathes. or better- because the documentation is still there where there is surprisingly little on more 'modern' lathes. Enjoy yours as I do mine. Norman |
| Ginger Nut:
--- Quote from: Fergus OMore on May 29, 2015, 02:39:30 AM --- I understand your comments but let me try to explain? The first point is that the ML7 is a very old model makers lathe and came- without any chucks. It came with a faceplate and hard and soft lathe centres. No more! If you wanted to have chucks, Myford supplied them as extras and NONE had back plates. My 4 chucks are all solid bodies. Fitting grub screws or whatever is just as much- an accessory. Again, you have missed the fact that the ML7 is just as much a woodturning lathe as a metal turning lathe. Model engineers made their own moulds using simple rests. Sorry, but these are facts in what was- another world. As for fitting a reversing switch to a mill or a lathe or a whatever, it is your choice and no model engineer worth his grubby finger nails didn't add his own accessories and modifications. I probably have 32gb worth of mainly Myford articles and a workshop full of either bought out or home made goodies. I can say that a reversing switch on a mill was not put on for screwed chucks as per Myford lathes. If you want to do it- well, you can. The only screwed spindle was the one on the Westbury ones. Mills, at the time of the first Myford ML7's were a thing for the factory and the super rich an in shed or back of garage. I made my Westbury from homemade castings. Life was like that. I must apologise for what might be 'trying to teach you to suck eggs' and this is certainly not my aim. I merely have corrected what appears to be misconceptions. There is no reason why you cannot do exactly what was done in the past on a lathe that was essentially out of World War 2. Unquestionably, it will still give you excellent service and it can be restored to perform as well as more modern lathes. or better- because the documentation is still there where there is surprisingly little on more 'modern' lathes. Enjoy yours as I do mine. Norman --- End quote --- Norman seems your just the man I'd like to get all that information from regarding the ML7. Mine however was built in approx 1972 from numbers obtained. Now about that time I was at school doing metal work on if I recall a Colchester lathe which funnily enough had reverse, yep stupid school bos would turn it on and off would fly a chuck or faceplate thank goodness sense was seen by the teacher and instant ban from class. From what I have read of the ML7 (I used to read UK Model Engineer regularly in the 60's & 70's) over the years it grew from a very standard start up lathe for model engineers/home hobbies sector but often was seen in small and large engineering shops I have a friend who did his apprenticeship on one in the 70's). You could make your own attachments many of which became incorporated into Myford's optional extras. Here's a question then "Why did Myford fit a motor which can be and through the manual gives great explanation of fitting and using a reversing switch let alone used to sell it?? |
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