See post by me at top of previous page involving PS Waverley
![Smile :)](./images/smilies/icon_e_smile.gif)
I think that was what prompted me to post.
Facile attacks can be made on most leisure activities along those lines. Painting and drawing are very popular hobbies. Why? You can take a photo of anything you want to record, or have a professional artist draw or paint it for you for not that much. Most of the stuff they turn out will end in the bin or on a fire. They'll never make a living out of being an artist, even if they are good and can sell their works for a few hundred a pop. They do it because they enjoy it.synx508 wrote: ↑Thu Jul 11, 2024 5:53 pm Recently, I was asked by my father-in-law, who is an electronic engineer who worked in broadcast TV and video why I keep buying test equipment and what is it that I want to measure? I told him it was sort of like those people who build or restore steam locomotives. That evening I did a bit of Googling for the person who tends to buy any HP gear that I take to rallies and put it in his Merc. It turns out he has a celebrated steam railway in his garden. Now a bit worried that I might become a train obsessive but my garden's about 12 metres long so no chance of a ride-on railway.
This sums it up, I'm sure I'd enjoy scratch building a steam engine, too. I'd end up picking up lots of skills I wish I had and could probably be spared the recent expense of a new car exhaust system that only needed replacing because it was a bit rusty and a small protruding part of it with a critical role had departed somewhere in Windsor Great Park.
Here too. I find I can fabric-cobble things just because I've been tinkering a long time. Bodges are a special talent here. The vortex vanes in the inlet of current car are operated by something that looks like a 1970s RC car servo, via a small pushrod linkage. This tends to wear out in the ball joints, and breaks when you try taking it out. So 1,5mm mild steel wire and PVC tape it is. The new spare is being sent to our hotel and will possibly arrive today.
I worked at a sound and lights company in the early 90s, and the repair guy was denied the request of a scope, so I wanted one. That's the easy answer. And now I do it because I can. I do like to point out that I've actually used all the working instruments in my collection to perform measurements beyond the checking of standards.
Not really. Depends to what standards they comply with or is it just marketing.Specmaster wrote: ↑Wed Jul 10, 2024 9:54 am So are my Citizen watches, but I would never like to put them to the test, but a proper true diver's watch, well that's different.
nah, the point I was making, maybe badly, is that Citizen state their watches are water-resistant to a depth, not waterproof, even though they are water-resistant, I just don't take any chances, other than washing my hands with them on, I will always take the watches off if I had to immerse my hands in water. On the other hand, something like Omega Seamaster watch waterproof to a depth of 1000 ft would be perfectly, so it should at around £6,600 a go, whereas my most expensive Citizen watch is £900.bd139 wrote: ↑Tue Jul 16, 2024 12:35 pmNot really. Depends to what standards they comply with or is it just marketing.Specmaster wrote: ↑Wed Jul 10, 2024 9:54 am So are my Citizen watches, but I would never like to put them to the test, but a proper true diver's watch, well that's different.
Your other point from the earlier post is quite frankly wrong. Treating a device with respect is not an insurance policy. Having a standard test procedure and certification however is against the things it is tested against.
So for example my iPhone 15 Pro is IP68 rated. My AW9 is rated to 50m depth under ISO 22810:2010, full immersion. Also on top of that, IP6X dust rating. They are actual standards and they test them. Extensively. I think they said they get through 10,000 handsets during the test cycle data collection.
The consequence of that certification is that the device is designed with that as a higher priority over battery replacement. There are literally ZERO removable battery phones out there with snap on backs as you mentioned which come even close to that. If you swap your battery every 3 years, that is exactly the design trade off that should be made.
Incidentally if you take it to Apple, they will actually seal it properly (it requires special equipment to do this) afterwards. (you can hire the kit from selfservicerepair.com if you want but why the hell would you).
True, dwagon-sweat and normal sweat is salty. Stainless Steel as in Citizen watches most certainly is stainless steel unless it's titanium, I've had lower quality watches in the past claim to be stainless steel, but they sure are not as the sweat eats into the cases and leaves then all rough.
Quite a lot of people have a sensitivity/allergy to nickel, and the commonest alloy used for watches 316L has 10-12% nickel.Zenith wrote: ↑Wed Jul 17, 2024 12:24 pm I've always found stainless steel watches cause slight skin irritation after a time. I haven't noticed the stainless steel has been even slightly corroded, although there must have been some chemical action. Surgical grade stainless steel is hardly expensive when you consider the amount used in a watch. The titanium watch I've had for the last 30 years has never caused even a hint of skin irritation.
This was a problem for early Apple Watch users as well. The alu alloy they used had a high nickel content. I couldn't wear one. They changed it around S6 or so as they did with their laptops finally. I dissolve them with my sweat instead now.Cerebus wrote: ↑Wed Jul 17, 2024 5:46 pmQuite a lot of people have a sensitivity/allergy to nickel, and the commonest alloy used for watches 316L has 10-12% nickel.Zenith wrote: ↑Wed Jul 17, 2024 12:24 pm I've always found stainless steel watches cause slight skin irritation after a time. I haven't noticed the stainless steel has been even slightly corroded, although there must have been some chemical action. Surgical grade stainless steel is hardly expensive when you consider the amount used in a watch. The titanium watch I've had for the last 30 years has never caused even a hint of skin irritation.
Yeah, the nickel makes more contribution to chloride ion resistance than any of the other alloying elements apart from nitrogen (which is obviously highly limited by how much you can add). If you're going to make SS nickel free then it's going to have much less resistance to sweat and seawater that the optimum alloy.
That explains that then.Cerebus wrote: ↑Fri Jul 19, 2024 10:29 pmYeah, the nickel makes more contribution to chloride ion resistance than any of the other alloying elements apart from nitrogen (which is obviously highly limited by how much you can add). If you're going to make SS nickel free then it's going to have much less resistance to sweat and seawater that the optimum alloy.
How about TiN-ing?Cerebus wrote: ↑Fri Jul 19, 2024 10:29 pmYeah, the nickel makes more contribution to chloride ion resistance than any of the other alloying elements apart from nitrogen (which is obviously highly limited by how much you can add). If you're going to make SS nickel free then it's going to have much less resistance to sweat and seawater that the optimum alloy.
TiN is normally applied as a surface hardening treatment rather than as a corrosion passivating layer. I've no idea of the corrosion performance of TiN although instinct says it's probably quite considerable. As the whole 'stainless' bit of stainless steel is a self-passivating layer effect I'd say that adding another passivating layer would be a bit self defeating. SS can be nitrided and N is the most effective anti-corrosion alloying element for SS (16 times more effect than chromium weight for weight, 5 times more than molybdenum), so that seems a good route to go down if you want a corrosion resistant low/nil nickel stainless steel.
Try Stewart of Reading. They list them with no price. They have a special offers list with prices, but it isn't on that. Their lists may not be that accurate, because stuff comes and goes. You have to phone them and ask.AVGresponding wrote: ↑Sun Jul 21, 2024 11:07 am
BTW if anyone finds an HP 8904A at a sensible price, please let me know...