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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: New Mill
03/04/2020 11:42:18

And an earlier source than George's, indicating where it lies in a range of oils:

US Geological Survey 1909

Bill

Thread: New design of mains plug?
02/04/2020 10:57:46

And further to Michael's point, the socket 'safety' covers that people buy to protect children from accessing the sockets can defeat the included safety features. I had some that opened the live and neutral 'gates', but the plastic cover left small gaps around the socket holes that wire or other thin objects could be inserted into.

Bill

Thread: Coronavirus
01/04/2020 14:14:12

Martin, thank you and all your colleagues.

Such important work. Incredible that biology was considered so unimportant in my youth, that my generation of boys were not taught the subject. Just to be fair, the girls weren't taught physics.

Bill

Thread: dial matting
29/03/2020 23:24:35

Youra,

Looking at Richard's member postings, his last was on 27July 2012, so I don't think he will answer you. I think he means chamfer the edges to the same angle as the knurls (like pressure angle on gears). This would leave points which would I suppose give a matt effect when rolled repeatedly across the surface in all directions. It does seem like etching is an easier option.

Bill

Thread: Printers
08/03/2020 18:39:15

Did you recently buy new paper, or is it stored somewhere cold? Slightly damp paper doesn't load well.

I also agree with HOWARDT about the weight of paper. At multiple worklaces, I have had problems with industrial sized printer/copiers that objected to 70g paper (or cheap 80g) the buying departmens tried to foist on us. If you check with calipers, full weight 80g paper is close to 0.1mm thick.

Bill

Thread: Query using Turbo Basic
03/03/2020 14:08:19

Referring to the 1987 manual (Turbo BASIC manual), p.307 tells us that putting the semicolon at the end of items to be printed supresses the otherwise automatic printing of a carriage return. I wouldn't expect another version of the program to give a different behaviour, as it's probably the most-used standard function in the language.

Nick's comment sounds like a good idea to move the cursor back. A problem I remember from TurboPascal (which was probably similar in behaviours) was that printing to the last character in the bottom line of the screen caused the screen to scroll up one line, which was unrecoverable.

Bill

03/03/2020 11:53:42

Another option might be to print individual characters to file (BPUT?) using, e.g., a for loop.

Bill

03/03/2020 11:50:10

Greensands, with regard to the function appending the 'newline' character(s), I agree. If you can print your string of characters to a small file and then view its size you will see if extra characters have been added. Unfortunately i haven't used Basic in a long time, but TurboPascal and other languages functioned the the same (if you pardon the pun).

I'm afraid I can't help on avoiding the newline from occuring.

Bill

02/03/2020 22:23:56

My Basic skills are long out of date, but, I note you mention a record. Does this mean you are printing to file? In that case, I wonder whether it is using the newline to indicate end of record. If you can inspect the file, you would probably find two characters, CR and LF carriage reurn and line feed, if you are using a Microsoft Operating System. Separators between fields in the record might be commas or tabs, as determined by your programming.

If you can't hex dump the file, you can print one record to file with a known number of characters, and see whether the file is one OR two characters larger than that.

If you don't have a hex dump program, you might try HxD, which is free:

HxD program

If you've not used one before, you find it quite interesting to view various small files. You will need to find a table of ASCII codes, although many text files now us two bytes per character, in place of the original one.

I hope this is not 'sucking egg' territory.

Bill

Thread: Mag Base
28/02/2020 19:06:52

I know it's not a DTI base, but I presume that the mechanism is similar:

Magnetic chuck .

See bottom of page 4 ; note the page order is a bit odd, perhaps the booklet was disassembled before scanning.

Bill

28/02/2020 18:53:49

I was taught that permanent magnetic chucks circulate their magnetic field through the iron segments when turned off. When on, the flux flows out through one segment, through the work, and returns to the magnet via the adjacent segment. I've seen a diagram somewhere, but can't find it!

Bill

Thread: Coal being phased out
25/02/2020 21:18:18

I hope, given these various points of view, that we won't lose your input to the forum, Phil, you have provided much useful information over time. Thanks for that.

Bill

25/02/2020 20:05:19

Zebethyal, 65000 BTUs, that's a lot of energy. But I'm not familiar with the comment from the Matrix. However, it's a quantity of energy and not a rate of doing work. Assuming it is used up over a day, that's about 800 watts, over a horsepower, continuously, so no-one could keep that up for long! You'd have to eat quite a few steaks, so more bovine farting.

You have some nice projects, by the way.

Bill

25/02/2020 14:09:55

Martin, your link to the global temperatures over time is very revealing. I have not any compelling 'natural' explanations for the rapid rise after relative stability for the last 12,000 years since the last ice age; orientation of Earth's axis, sunspots, etc.

Thanks, Bill

Edited By Bill Davies 2 on 25/02/2020 14:10:28

25/02/2020 12:34:56

I fully agree, Hopper. I think it was Thatcher (and Reagan) that kicked off the privatisation thing. The UK suffers with near-monoplies dominating various services, plus the inability of these separate units working together. Our railways are a prime example. Our public sector is by no means perfect, and significants cuts has caused much harm, but private sector firms hide behind secrecy (commercial confidence) and use their wealth to sway governments from providing for the greater good. But this another rabbit hole for us to chase down.

25/02/2020 11:42:41

Well, Hopper, I don't claim we were there first, but the Dinorwig pumped storage power station opened in North Wales in 1984:

Dinorwig

21% of the UK's renewable energy is from hydroelectric (appropriate for such a wet part of the world), which is 4.2% of total total electrical generation.

But I was impressed by all the rooftop water heaters that I saw in WA in 2004.

Bill

22/02/2020 11:13:31

Very good comment, Neil.

I remember my economics lecturer reminding us of Keynes' comment about 'the long run' (i.e., extrapolation into the far future): 'in the long run, we are all dead.'

For me, I have seen the climate change over my lifetime, my mother said much the same thing being brought up in London and rembering the Thames freezing over. And I find human causes more compelling than 'natural' ones (technically, of course, we are part of nature). One way or another, and for whatever reason, we need to change course. I recall an OU course that I did in 1981 that pointed out the finite fuel resources and the growing human population in less developed parts of the world that would expect a western standard of living. Quelle surprise, here we are.

Bill

21/02/2020 12:39:03

Electricity from fuel involves conversion costs, which is why it is always about three times dearer than gas, for an equivalent unit of energy. (BTU/hr, anyone?). Without a huge increase in renewable energy, which the current government do not seem to support, or an increase in nuclear, how are we to power homes (and I guess, industry, too) and vehicles?

Not to mention the need to massively increase in the capacity of the Grid, and vehicle charging points. Bill Gates' recent comment about the time taken to charge is an important factor, too.

Looking forward to seeing more battery powered steam engines...

Bill

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

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