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Member postings for Bill Davies 2

Here is a list of all the postings Bill Davies 2 has made in our forums. Click on a thread name to jump to the thread.

Thread: Scorchio!
18/07/2022 13:05:52

It's 30°C here in Cardiff, too. I'm sitting browsing the laptop, whilst a plumber, electrician and builder are all working hard on an extension. I'm providing cold drinks. All doors are open, so the house is soaking up the heat, and we will pay for it tonight!

Too warm for the garage/workshop!


Thread: Phosphoric Acid experiment
05/07/2022 12:30:22

Thanks, Chuck, your find is proving more interesting than you expected.

I read some years ago, perhaps when visiting the Ironbridge museum, that wrought iron isn't made any longer.

A brief search brought up: Wrought iron. I had expected that "old stock" might have been recycled, but they claim to be the only supplier in the world.

I recall seeing some large anchors at Portsmouth dockyards, with very significant grain visible.

I think that I read that sand or crushed glass was used as a flux, or was that blacksmith welds?

Thanks, Dave, for interesting details.


Thread: Boxford shaper
02/07/2022 14:54:04

Robin, that looks in remarkable condition. I hope you get it working again, in both senses of the word.


Thread: Progress 2G pillar drill
29/06/2022 11:38:22

Hi, Brian. Just a comment for others, that it is not to post personal email addresses, use a private message to send info to the recipient. Otherwise, you may end up with unwanted emails forever.

Good luck with the gear, old machines are nice to use and to look at, and deserve repair.


Thread: Replacing a 24V AC machine lamp
18/06/2022 21:09:39

Would a diode cut 24 VAC to something suitable for a 12V bulb? RMS gives the equivalent DC power level, (filament) bulbs aren't too fussy regarding voltage, a continuous higher voltage giving reduced life.But this varying from 0v to about 17V rapidly, and filaments have a degree of thermal inertia.


Thread: Out of Curiosity - TurboCAD Advert Screen-shot
15/06/2022 11:45:22

Nigel's comment suggests he knows, but for others who may not, the "0x" numbers are in hexadecimal format, more readable than binary. They may be the codes representing the action produced by the key codes in column 3, or as Nigel says, the address that the command jumps to, to execute the code that performs the action.

Without seeing the labels at the top of the table, this is just conjecture.


Thread: Change of direct debit for MEW?
13/06/2022 13:19:53

Me too, Ed. The was discussion a while back about changing ownership, and the email says we don't need to do anthing, except note a change in customer reference number. The source of the email looks legitimate.


Thread: Yet another unidentified tool
05/06/2022 16:54:32

No idea,Paul.

It looks as though the ring is used to hold the base against something, presumably the work? The base clearly butts against the edge of something. Do you push the screw to force the blade out? Does the screw control the depth of cut?


Edited By Bill Davies 2 on 05/06/2022 16:54:56

Thread: Getting old, selling lathe
29/05/2022 10:22:19

David, I hope you get feel a bit better soon. Thanks for your contributions.


Thread: Hello - Uni or apprenticeship
26/05/2022 15:27:26

Hi, Christine, and welcome.

I think your decision will come down to how near you want to get to the practical aspects of mechanical engineering, and also the size of organisation you see yourself working for. It also is affected by whether you want a full-time or part-time course, be employed or sponsored, or pay course fees.

Following a degree course will provide you with skills to go into design, then progression into customer facing or management roles.

If you take an apprenticeship, depending upon your prior qualifications, could lead you into technician level part time Certificate or Diploma level courses, which supplement what you would learn in your workplace. Diplomas may tend to be full time courses. There are two levels, (Ordinary) National Certificate or Diploma and Higher National Certificate or Diploma (ONC/D, HNC/D).

If you seek practical wokshop skills, you may follow the ONC route or take a National Vocational Qualification (NVQ) which assess what is learned in the workplace, where your competence is certified by internal and external assessors.

You can search on these abbreviations to find more info, but note that Scotland and Northern Irelands qualifications differ in their details from England, I'm not sure whether Wales offer their own.

If you can add more info, it's possible we could offer more focussed advice. This is without adding that mechanical engineering covers general engineering, aeronautical, motor vehicle and many other specialised fields, for which the units you would study may differ.

Good luck,


Thread: New-style cover finish
19/05/2022 21:25:39

Me, too.

It's too glossy, but will I get used to it? The internal pages have a different quality, too.


Thread: Myford ML4 change gear modification
16/05/2022 11:07:17

Ajax, assuming that you would want to key the intermediate gears, they would have to have bushes with a key, through each pair of gears, to bear on the non-rotating shafts on the banjo. There would seem to be little benefit in keying the final gear to the leadscrew, if the previous gears transmit their power via pins.


Thread: electrolytic derusting
11/05/2022 10:29:38

I found Graham's long-winnded link to rust removal by electrolysis very interesting. It is a collection of multiple articles in one document, so it is a bit repetitive. Anyone skipping it should note to avoid using stainless steel anodes, as (for example) comments on using stainless steel on page 11. Stainless steel produce toxic chromates and must be avoided. Now, where's my rusty angle plate I made during my apprenticeship over 50 years ago?


Thread: Gearbox splines internal and external
09/05/2022 13:46:39

Col21, since there are a lot of splines, I guess they are vee or involute, probably the latter as these can be hobbed like gears.

So, if you plan to machine one, you might check for curved teeth.


Thread: ME handbook Capstan and Turret Lathes
25/04/2022 17:56:13
Posted by Bill Davies 2 on 24/04/2022 22:18:48:

Not identical text, but is this related to the article that Mike has mentioned? Dated 1941.

I know it doesn't answer Mike's question, but others may be interested in this article.


Try again...

Small lathe capstan

25/04/2022 12:46:19

A simplified diagram of the capstan indexing and stops mechanism is shown on page 19:

Capstan and turret mechanism


24/04/2022 22:18:48

Not identical text, but is this related to the article that Mike has mentioned? Dated 1941.

I know it doesn't answer Mike's question, but others may be interested in this article.


Thread: Ambiguous words
22/04/2022 12:17:24

Awesome - awe meaning full of dread, giving us aweful. But I blame our neighbours for that one!

Premium - first (top) quality, or cheap? Used as a product description, I sometimes wonder.

Thread: JB cutting tools
19/04/2022 13:32:36

There was a message that they would reopen in Spring 2022. The company seems to still be active.

Perhaps the domain name has been allowed to lapse?

Thread: DRO readouts freezing when adding second scale
10/04/2022 13:44:14

Hi, David. FYI, you have accidently linked twice to the same site (Vevor).


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