Member postings for Brian Wood

Hello Smudge,

I bought two recently froim www.motionco.co.uk

They do mail order, in the diameter you need and I would recommend you order a size [which you specify] that is tight rather than "easy", they stretch quite a lot from new.

Nest wishes Brian

This reply is now very out of date Andre, but sadly Tony died shortly before the final issue of his series of articles

Regards

Brian

Hello David,

Take a look in your messages, it might be to your advantage.

Regards Brian

Hello Matt,

The issue you want is June 2011 MEW 177.

Regards Brian

Hello Peter,

While Phil was replying I had already copied the pages from the Myford manual, they may be useful to others.

Best wishes Brian

Hello Mike,

Go for David's, people usually make their own and I imagine his will be as good as anyone else's.

I think you will find it a useful accessory in the years to come.It will certainly be handy for this job. In fact you will probably spend a lot of time making tools and fittings to make life easier for doing the things you want to do.

The whole activity is known as T to some unspecified power where T is task and the value of the multiplier depends entirely on your ingenuity and need for special tools not available outside your head!!

Brian

Edited By Brian Wood on 31/07/2013 17:08:36

When I was faced with sweeping log burning flues, the most successful tool was a hefty chain with coarse bolts through the links to break up the tar. I was lucky in that I could do the work from the chimney top. The amount of junk that shifted was quite impressive.

Brian

Mike and John,

If you have one I would be inclined to use a mandrel handle so that you are cutting by arm power alone. It does allow considerable room for and time to spot mistakes or make tool depth adjustments if you feel the load getting excessive.

Thread dial indicator. Since you are cutting an imperial thread I can't see that being a problem, after all you wouldn't think twice in using it for 12tpi. A dummy run along the job without doing more than lightly marking it will give reassurance.

Brian

Hello Mike,

There is a simple alternative to those Harold Hall suggests without using the metric quadrant.

Change the 24 tooth mandrel gear for one of 32 teeth and set the gearbox to 8tpi. That will give a 6tpi lead

You may have to extend the clamp slot at the bottom of the gear quadrant to accept the larger gear if it can't be swung down low enough. The gear loading will be higher than the designer allowed for so take it gently with light cuts.

Good luck

Brian

Hello Berty,

My late father had an ML4 which he bought in 1945, like some others who have posted on this thread I had a very happy relationship wsith it when it became mine.

I note you propose to make a new spindle,, I would recommend an ML7 Myford nose so that you can fit currently available chucks etc. and if the bore size allows give it a 2MT taper at the nose. Dad's lathe was already 2MT but I fitted a collar to the nose to bring the register diameter up the ML7 size of 1.5 inches, it was a very useful mod.

Enjoy your new friend

Kind regards Brian

Hello Jacques,

I have been busy elsewhere since my posting on 5th June, you have added helpful information and some detail to flesh out the story and extend the understanding a trifle. Thank you

Gary Wooding

If you want a copy of the Mc Duffie article that I started this thread with, send me a PM with your email address, I can now copy one to you.

Regards

Brian

I have been very pleased with my SHARS unit at £65 or so, it doesn't get constant use and is a lot easier to use than the swing round DTI method; for critical work of course that method can't be bettered.

It was really handy when I was centreing a batch of 4 foot long bars for end drilling and threading on the lathe. The business end was supported in a vice on a vertical slide bolted to the cross slide, the remote end was held in the fixed steady at the very end of the lathe bed with the tailstock removed.

The instructions that came with my unit point out very clearly that the marking on the dial are relative and cannot be related to any scale or measurement.

One of the best views of a unit in use is on the U Tube video made by the Glacern Machine Tool company, the crash course in milling #5 [Work holding and location] in particular. Google Glacern to find them

Brian

Edited By Brian Wood on 05/06/2013 09:36:10

Edited By Brian Wood on 05/06/2013 09:37:44

Hello Phil,

I get the same sort of disrespectful comment, it depends on the crime of course but "daft old bu**er" gets used for serious offences!.The 'old' bit does grate doesn't it.

Thanks again for your support if I need it.

Best wishes Brian

Gentlemen,

Thank you one and all for the sage advise. I do pay for postal subscriptions but I usually dump the wrapper which has the Sub. number on it; this time I need it!! Ah well, there's no rush, I now have the information I needed to retrieve that particular article

Phil. Thank you very much for your generous offer, it is greatly appreciated but I hope I can work the digital method satisfactorily. My suitably aged grandson lives in the USA so I shall have to muddle through; it doesn't come as easily to me as making swarf and failures.

If all fails I will knock on your door.

Thanks again to everyone

Brian

That's very helpful Jason, thank you.

Brian

Hello Robin,

Thanks for the suggestion but don't I have buy into the digital issues first? And in any event I am missing the actual issue number to look for as well.

I'm not being deliberately mean, I already pay for my copies at subscription rate

Brian

Some help please with Mr McDuffies article which was published in MEW in the Autumn edition 1990, before the time I started taking the magazine.

My interest stems from Theodore Clarke's artic;le in MEW 204 [ the current issue] which refers to Mc Duffies work as a reference; it would make useful background reading on what seems to be an interesting method of altering thread pitch.

Can any of you help please with a back copy or similar?

Thank you

Brian

I think it would be best if I just get back in my box!! A case of reading what one expects. Sorry to all

Gear size for 127 Teeth is still valid

Regards Brian

Becky,

My apologies, I was quoting from the ML4 table which did have a 2nd stud. Jason is helping more than I am but his answer above gives a 0.5mm thread

If you run 40/127 it will give the ratio you want for M6 [1mm pitch]

Sorry for the confusion, Myford changed more than I expected between the ML2 and ML4 which was the lathe of my experience.

Just one small point, do you have room on the leadscrew without fouling the swarf tray for a gear of 127 teeth? It will be 6.35 inches diameter.

Regards Brian

Hello Becky,

The stud logic is completely straight forward,

The lathe spindle gear is coupled through the tufnol tumbler reverse gears to drive an identically sized gear. on its own short shaft. These are probably 25 tooth gears. Linked to that by the short coupling wire is the one called Mandrel

Mandrel is the first gear in the chain. It then goes through 1st stud to 2nd stud and finally leadscrew.

You arrange gears as shown on your chart , idler gear being any size that fits the space, it has NO influence on the overall gear ratio, working as it does like a belt to take the drive. Compounded gears alter ratios.

I hope that helps you

Regards Brian.