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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: Effect of Tensioning a Boring Bar
06/02/2020 13:46:18

Not tension, but... years ago, the company I worked for produced a small hobbing machine, which was being for producing gears for a brand of power drill. There was some chatter which the designers couldn't cure, so they brought in some engineers from a nearby university. They determined the resonant frequency and put a thin shaft up the bore of the hob spindle, with a mass on the end to vibrate in antiphase. It worked.

Bill

Thread: New computer possibly required
31/01/2020 18:52:28

It seem like there are lots of Toshiba laptops available, but the company has vacillated on producing laptops for several years, and seem to have sold the business to Sharp, at least in the US. I recently replaced the hard disc and memory in my Asus with new components (SSD) and full amount of memory, and hope to get a few more years from it. A 'traditional' laptop with reasonable performance and memory looked too expensive for a not-huge improvement. Time will tell whether that was a mistake.

Bill

Thread: Trapeziectomy
29/01/2020 21:07:04

I've also got rheumatism in the left thumb, it now clicks! I'm right handed, so would have expected that one to wear out first. Painful at certain positions, most painful removing a glove!? A colleague had steroid injections, which she said helped. I expect I will need that, so Nigel's comment is of interest or concern.

Bill

Thread: A question of beat
29/01/2020 14:06:13

Dave, at the risk of being labelled a pedant, 32768 is a power of two.

Bill

Thread: Win10
28/01/2020 23:21:10

Hi, Bandersnatch.

No, I meant with an external drive or memory stick. It's family important things like photos and videos that I use to take care to store on several drives. Even on hard disks there seems to be a gradual loss due to periodic unreadable files. And of course all those pdfs that we store, in the hope that we will read them.

Or do manuals even exist any more, Neil? The extenal drive I bought yesterday, to backup my files, doesn't seem to come with support, go and talk to 'the community.' But I suppose you can argue our community is the same, i.e., the repository of relevant knowledge.

Bill

Thread: New member from Worcestershire
28/01/2020 19:34:30

Welcome, Steven.

Good luck watchmaking on a shaper! But they are very satisfying machines. I wish I had room for one.

Bill

Thread: New member from Wales
28/01/2020 19:32:01

Bore da, Mike, welcome to the forum. I'm somewhere south of you, in Cardiff.

Bill

Thread: Win10
28/01/2020 19:28:48

Thanks Dave, that's very helpful. It's the usual thing with a PC that you've had for a while; full of bought but also free software that may no longer exist or run in the later OS.

Bandersnatch, I have an old Vista laptop that has a dead battery but will run (well, it did last time...) that perhaps I should retrieve files from. On the other hand, it's like the stuff in the loft - can you remember what it is, and would you miss it if it just diisappeared one day?

Bill

28/01/2020 13:51:02

I've attempted to upgrade Win 7 to Win 10 on an Asus laptop. I was not able to perform an install or download an ISO image, both failed on the license key. The laptop came with Windows pre-installed, so it has an OEM key. MS has previously indicated it was a 'legal' version.

I'm considering buying Win 10, but I'm not sure whether I can preserve my existing programs or would end up with a clean OS installed but no applications. In which case, a new machine would be the better option.

I hope these might help anyone considering a last-ditch free update to Windows 10. It's past the Jan 14th deadline but many sites 'suggest that it's still possible.

Bill

Thread: Weight and transportability of a Myford lathe
27/01/2020 16:16:33

I moved a Britannia 14 with the bed across the back seat of a car, not an estate. The legs headstock and tailstock are pretty light, but the bed is heavy. I did it on my own, but that was 30 years ago!

Bill

Thread: Painted T Slots
26/01/2020 15:07:06

My tee-slots in a Warco GH mill (RF-45 clone) was the same. Tee nuts would not slide freely. I made a tee slot scraper from some sheet steel, and the single layer of brittle black paint came away fairly easily. As Howard suggests, a nee nut slid along the slots removes any remaining paint.

Bill

Thread: scam alert
24/01/2020 14:58:24

And I fell for a 'UK' company selling replacement camera batteries and chargers, a couple of weeks ago; I had received no email to say it had been dispatched, and on enquiring, no reply to my emails querying that.

Ordered again from a company based in Milton Keynes yesterday (I checked more carefully, especially reviews), goods have already arrived today.

Thread: Where Can I Get Machine Handles?
24/01/2020 11:47:58

Not a lot of choice, but: take a look at:

Knobs

http://www.wdsltd.co.uk/product/3654/fixed-grip-wds-138/

Bill

Thread: Scraping a magbase
24/01/2020 11:43:42

Thank you, Michael. I had to revise a little French in the section referring to end and line standards. Erudite chaps in those days!

Bill

Thread: Can we have a really clear distinction between Silver Soldering and Brazing
20/01/2020 23:24:40

RRMBK mentions Workshop Practice book no. 6, but I have a copy of soldering and brazing, no. 9. No. 6 is measuring and marking metals.

Thread: Mechanisms in modern engineering design Artobolevsky
13/01/2020 13:27:19

I remember, in my eng science studies of years ago, of calculating friction of drive belts depending on the angle of wrap. I'm not a yachtsman, so I suppose windlasses operate on the same principle, so that a smaller friction stops the belt from slipping when the windlass is rotated, and provides the much larger force to pull the rope. Or is there a fancy arrangement to hold the belt, reversing the loose end's direction?

Bill

13/01/2020 13:21:21

I see the problem, Frank. Somehow, it's made it into the 5th edition.

Thread: Tool boat sizes?
08/01/2020 09:49:00

Hi, Peter.

If it is a Dickson toolholder, the following table may help:

Dickson toolholders http://www.lathes.co.uk/latheparts/page13.html

And some previous dialogue here, including other brands:

Earlier posting https://www.model-engineer.co.uk/forums/postings.asp?th=123597

Bill

Thread: Online order using AVS billing check
07/01/2020 16:33:14

Folks,

I've ordered a second-hand book online and for the first time, I've been asked for a postcode for an AVS billing check.

It checks your postal code and some other info with the bank: AVS (Wikipedia). News to me, perhaps not to you.

This was a company that delivers globally, so perhaps not used in our part of the world, but the bank check made no comment. Perhaps we will see more of it, another check in addition to the 'three digits on the back of the card' (CVV/CVC).

The topic is 'book' as I coudn't find anything more appropriate.

Bill

Thread: Cad drawing a tiny sprocket
05/01/2020 19:51:19

Here is a recent patent that shows the relationship between sprocket and roller.

Standard sprocket for chainwheel (2007)

I note that bycycle sprockets seem to have a different 'tooth' form compared with motor cycle sprockets, presumably each are optimised for the power transmission vs friction of the two applications.

I hope this helps a bit.

Bill

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