Member postings for ega

Chris Denton:

Good luck with your build. I'm glad that you have not been deterred by the less positive posts. My photo shows my chuck tapping a short thread in a blind hole supported by a sliding holder in the tailstock; whilst the tap cannot slip in the chuck (unlike a drill chuck) the moment the tap starts to bottom, the tommy bar is released and the lathe spindle halted thereby avoiding the other danger of a broken tap.

"It just holds a tap and is not an automatic tapping machine with reverse etc. At the front of the chuck are the jaws to keep the tap concentric and at the back of the jaws are a pair of flat jaws to grip the square on the end of the tap."

A fair description, Speedy Builder5, but I find my similar device excellent. Mine is arranged to slide on a rod held in the tailstock and has been equipped with a fixed tommy bar. It has a claimed range of M4-M16 but, of course, this depends on the shank and square sizes of the tap.

By the way, I am a Speedy builder, too, but mine is a recumbent tricycle!

Apart from occasional turning between centres on the Myford, I do sometimes use the Radford disc-facing device which employs the headstock taper to locate supports for thin discs held in the chuck which can then be faced to fine limits.

On my larger lathe I have an MT adapter for the Myford chucks, again very useful on occasion.

Chris Evans 6:

I have a stock of thick paper maker's felt somewhat thinner than 6mm. You would be welcome to a piece for the (actual) cost of the postage. PM me if interested.

Vic:

I'm a woodturner, too, and I sympathise with your wish to avoid changing frequent pulley changes. Forgive the obvious question but is there anything you can do to make changes easier? It would help to know what model lathe we are talking about.

Lawrence Sparey recommended ethyl tetrachloride for turning stainless steel - "used for filling certain types of fire extinguishers, and most large garages stock it".

Remembering warnings about carbon tetrachloride, I imagine that this recommendation is not to be followed today?

John W1:

I think your buy was the bee's knees!

I keep my head down on these occasions but was amused by the You Tube contributor who said he started suffering from "buyer's remorse" even before he had completed his purchase.

I no longer have my copy of Bill Williams' book on Austin Seven Specials but I seem to recall he had something to say about supercharging.

Glad you solved your problem. This photo shows the spacer I mentioned. It gives an extra 1" forward travel away from the operator and, of course, the same amount less in the other direction, which I have never found to be a problem.

Alex Collins:

I sympathise with your dilemma. I felt that the forward travel on my vintage S7 was too short and years ago fitted a spacer between the leadscrew bracket and the front end of the cross slide.

I could post a photo if it would help.

Ian S C:

I agree also. However, it is worth pointing out that, on my own machine, with the Myford pattern PB 4" SC chuck I cannot machine right up to the jaws without the saddle oversailing the gap or winding out the topslide.

Some years ago I bought a used 4.5" Taylor 3J with a view to making a backplate and using the chuck with my S7. These excellent chucks are very heavily-built and an instinctive feeling that it would be wagging the dog has kept me from doing so.

I assume that the Myford pattern chucks are no longer available new but, depending on the construction of any given chuck, it is sometimes possible to reduce overhang by positioning the backplate thread within the chuck body.

Gordon W:

"I would put my trust in good paper" - or vellum? Copydex is an under-rated adhesive and has an interesting smell.

John Stevenson:

Thank you for the very informative reply. I looked at the video and am wondering what the UK equivalent of high school kids is!

This approach to data capture and retrieval does raise some very interesting and complex questions. Should I buy a canoe and paddle it myself or rely on being able to hire one when I need it? Temperamentally I would always favour the DIY route. As a matter of fact, I did own a self-built canoe years ago and kept it on the river at Tewkesbury which in recent years has suffered greatly from flooding!

Edited By ega on 25/11/2015 16:04:59

John Stevenson:

Stripping - I believe this is the trade term - and scanning books is a very interesting idea, albeit not for everyone.

Can you say what scanner you are using and how big a typical PDF is?

This is the so-called "perfect" bound method.

There have been some excellent engineering-based programmes on the BBC but they seem to be the exception. It is clear from the BBC "spec" quoted by Diane Carney that they are looking for human interest and, of course, "passion". I notice that they don't express any particular interest in models.

I don't suppose anyone remembers it it but Lawrence Sparey appeared on television's "Inventors' Club" programme in the early days of TV demonstrating his dividing attachment for the ML7 to an apparently respectfully interested Mr Geoffrey Boumphrey.

How the world has changed!

Brian G:

Excellent description - I think this was the Valtock. They also made a meths blowlamp.

Neill Wyatt:

Thank you for explaining what seems like a fair arrangement.

Steve Withnell's comment "I wouldn't be surprised if the Ts and Cs to use this site don't claim the IPR to all content posted" (ignoring the double negative) sent me to the Terms and Conditions link at the bottom of the page. As I read the Ts and Cs, content providers including forum members, retain copyright in their posts.

Please confirm.

Edited By ega on 23/11/2015 11:12:08

Reminds me of this cheap little red plastic gadget:

It's just slipped over the end of a suitable screwdriver; shown holding a 4BA screw.