Here is a list of all the postings Sandgrounder has made in our forums. Click on a thread name to jump to the thread.
Thread: beryllium copper compression spring needed |
19/01/2018 12:12:39 |
Posted by Russell Eberhardt on 18/01/2018 16:28:54:
Rod, I was remembering from my days in the Philips Research Laboratories in the 1960s and 1970s. In the electronics labs we were forbidden to work on beryllium copper. Any such work had to be done in the technology labs where they were able to take appropriate precautions. Perhaps the hazards were over stated in those days but I would still be careful if using it at home now? Microwave transistors incorporating beryllia heatsinks were considered to be very dangerous if broken. Russell Edited By Russell Eberhardt on 18/01/2018 16:32:18 I worked for Mullard in the 1960's and probably read the same instruction as you that was sent out worldwide from Philips Eindhoven, this ordered that all Beryllium metal and compounds other than materials used in specially equipped areas be collected and sent off for safe disposal. John |
Thread: Ten Useful Things |
16/01/2018 06:01:44 |
Posted by Geoff Theasby on 16/01/2018 02:13:11:
I've never needed a temp controlled iron, used an Antex X25 for decades. Geoff The same iron for me and before that a Henley Solon 25W which I still have. John |
Thread: Pickling Stainless Steel |
20/12/2017 12:38:31 |
Posted by mark costello 1 on 19/12/2017 17:53:11:
They even deliver dihydrogen monoxide to My house and have the nerve to want Me to pay for it. Crafty scheme! You could always ask to be disconnected if you're that worried about it. |
19/12/2017 06:27:32 |
Where I worked the welders used a proprietary white paste which had a weak ( 2-3%? ) solution of Hydrofluoric acid plus Nitric acid in it, it worked well and being a paste wouldn't splash but I think that would be also too nasty to use at home due to the HF.. John |
Thread: LED lamp failure |
16/12/2017 15:46:06 |
Posted by Bill Dawes on 15/12/2017 15:28:28:
The shower lamp I referred to is still original halogen, hence my reluctance to tempt fate by changing it to LED. My theory about its longevity is that the water vapour helps to keep it cooler than it would normally be. Bill D.But the halogen bulb is supposed to be run much hotter than ordinary incandescent bulbs, this is so the evaporated tungsten is re-deposited on to the filament increasing bulb life and keeping the bulb free of any blackening. John |
Thread: Why Column gear shift |
28/11/2017 10:57:55 |
I had a Standard Vanguard in 1963 and this had a right hand column change with a bench seat which allowed me to drive along with my left arm around my girlfriend. John |
Thread: Has anyone regretted migrating from MS Winows to Linux? |
17/11/2017 05:47:02 |
It's just over 4 years since I changed to Linux Mint from XP, it's worked faultlessly now every day since, no 'Blue Screens of Death' and just as fast now as it was when I changed over. John |
Thread: Washer undercut |
31/10/2017 13:57:43 |
Posted by Mick B1 on 31/10/2017 13:46:18:
I don't know why you wouldn't use the same 30 deg. chamfer down to AF diameter that's on both sides of a standard nut. The paint would be affected in almost the same way - if anything with less damage, due to the absence of a right-angled edge. They do make 'washer faced' nuts as well. chamfer one side and washer face the other. |
31/10/2017 12:56:07 |
Posted by Philip Rowe on 31/10/2017 12:04:53:
I've always known this feature to be a 'washer face. Is this a term that is common/uncommon as I have used it on occasions and other people have looked at me as if I'm from another planet? Phil 'Washer face' is the term I've always used and it's called that in the fasteners section of my 'British Standard Handbook No 18'. John |
Thread: Loading on a bar |
28/10/2017 06:45:00 |
That's a useful link Joe, easier than digging my old 'Redpath Brown' steelwork book out. Thanks John |
Thread: Chance Brothers Glassworks in Smethwick (to 1981) |
24/10/2017 15:44:59 |
I visited the Chance works in Smethwick a couple of times in the late 80's when I worked for Pilkington R & D, we were looking at a glass tank they had that made very thin glass sheet that was broken up to use in reflective paint. There was also Chance Pilkington Optical Works in St Asaph N Wales where they used to manufacture lenses etc. John |
Thread: What's this for? |
15/10/2017 15:50:43 |
Posted by ega on 15/10/2017 14:20:57:
Posted by Roger Provins 2 on 15/10/2017 09:24:00:
There's no mention of it in the 1958 B&H catalogue. Nor (according to the index) in the 1964 catalogue. Or the 1971-72 John |
Thread: Eccentricity / Run-Out |
29/09/2017 09:43:04 |
I very rarely if ever buy extended warranty but I suppose if it makes an individual feel more secure then it's worth it for them, I know someone who doesn't insure their house, neither buildings nor contents because the chances of them being destroyed are statistically remote, that certainly wouldn't suit me. John |
28/09/2017 10:34:00 |
Posted by Neil Wyatt on 27/09/2017 21:00:00:
Simple advice for buying washing machines: 2 Don't buy the extended warrantyI wondered about that when we bought our previous machine many years ago, the top of the range ones, Bosch, AEG etc were around £600 + with a 2 year guarantee while a Candy was about £150 with a 1 year guarantee, however for about an extra £100 - £150 you could buy a 5 year guarantee for the Candy, so if you just wanted a basic washing machine without any special features which is a better buy? £600 with a 2 year guarantee or £300 with a 5 year, I'm not quite sure. John |
Thread: What is the correct name for this type of lock |
27/09/2017 15:41:56 |
It sounds like an Espagnolette bolt, these secure a door with bolts and vertical shoots. |
Thread: Homeworkshop site |
24/09/2017 09:34:55 |
Yes, it's the same for me. John |
Thread: Brass paint |
22/08/2017 05:58:27 |
Posted by Ray Lyons on 21/08/2017 14:21:35:
I bought a can of spray from Wilko which did a great job on metal. You beat me to it, I repainted an old metal loudspeaker, after preparing the aluminum horn and priming with zinc chromate, I used Wilko's gold spray on the outside and black in the mouth, it's actually passed the ultimate test and is now allowed to stand on a cabinet in the dining room. John |
Thread: Would you buy a second hand laptop computer ? |
20/08/2017 12:11:29 |
Are we not talking about two completely different levels of security requirements here? Obviously organisations like Banks, the NHS, Police etc must do the ultimate to prevent loss of data, but for the average person is it necessary? If I sold my PC after just deleting the files, is it likely that the new owner is going to go to the trouble of finding some special software or whatever is required to search the hard disc, to be honest if I sold it on without deleting anything the new owner would soon get bored looking at old holiday photos and reading my emails etc, even my bank account numbers are passed on when I use my card or write a cheque so they aren't that secret. If some dishonest person thought that my PC would contain very desirable info' he would probably break into my house and steal the PC, not wait until I sold it. John
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17/08/2017 15:06:26 |
Posted by John Haine on 17/08/2017 14:53:39:
Most companies providing computers for their employees replace them after 3 years or so, the old computers being sold into the "surplus" chain. There are dealers around that buy these, refurbish them, wipe the disc, reinstall the OS etc. I bought a Dell for the workshop via this route (for CNC) and it serves me well. I got mine from a dealer like this about 18 months ago, A Dell laptop that looks like new, Windows 10, performs very well and cost £100, the only thing fault with it is the battery, lasts about 1hr but I knew this before I bought it and I usually use it plugged into the mains anyway. John |
Thread: Visit to Bleetchly Park |
15/08/2017 11:25:56 |
My wife and I had a stroke of luck when we went there some years ago, it was in September 2009 and we chose the weekend of the 6th & 7th solely because we got a cheap deal at the Milton Keynes Travelodge, when we arrived at Bletchley we found it was a special weekend for the 70th Anniversary of the start of WW2 and besides the usual superb displays in the huts there was a fashion show and a collection of Enigma machines from around the world. Two memorable days John |
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