EDIT: The problem has been solved. @Sill identified the problem here and @cfabbro found a work-around here. Crisis averted!

I listen to some internet radio stations on my computer, but a couple of them aren't working any more: they appear to play, but there's no sound coming from my computer's speakers.

It is only two stations. I've tested other internet radio stations I listen to, and they still work: I can hear them. I can play and hear YouTube videos. I can stream Spotify on my computer. I can play and hear my music files stored on my computer's hard drive. So I know my speakers work. I know Chrome works as a music player for other sources, including other internet radio stations. It's just these two radio stations.

One of them is this radio station. Also this radio station. I know their digital streams are working, because I can listen to them via an internet radio app on my phone. So I know their digital signals are being sent out. But, while my phone app can play them, my computer browser can't play them.

I've tested both non-working stations in Chrome and Internet Explorer. They both don't work in Chrome, but this station also doesn't work in IE.

I'm using Chrome 80.0.3987.122. And I'm running Windows 7.

This problem only started a couple of days ago.

What's going on? How do I fix this?

I was reading this twitter post and it made me wonder if you have any ideas to stop speeding by car drivers? Have any of these ideas been tried anywhere? I'm also interested in unintended consequences.

https://twitter.com/agnessjonsson/status/1229103764843438086?s=20

Agnes @agnessjonsson

fact of the day: Sweden once experimented with a “speed camera lottery”. Those who drove within the speed limit were automatically entered into a drawing where the prize fund came from fines that speeders paid.

They tested it in a few different cities and I haven’t read the results of each one, but in Stockholm the average speed on the selected road decreased by 22 percent.

A while ago I mentioned I was going to attempt making a knife for the first time. Well, I did.

Apologies in advance for there not being many photos of the process - steel is really messy to work with so I mostly kept my phone safely out of the way. I'll try to get more pictures next time, although there are plenty of videos and picture tutorials around if people are super interested in the process. I shall endeavour to describe what I did in text, however.

I started out with a bar of 01 tool steel (wiki) which I cut into a rough knife blank. This I then hit with a ball hammer a load of times to get some texture. Then I used a belt grinder to put a bevel on the edge side, although only enough to thin the knife down to roughly the right shape, not actually sharp. Once that and a few other minor shaping tasks were done, it was time to heat treat it.

Heat treating changes the structure of the metal to make it harder. Hard steel will hold an edge longer, but it does make it much more difficult to work, hence doing most of the shaping before heat treating. To harden steel you need to heat it to a particular temperature, which depends on the exact alloy being used but 'bright orange' is close enough. Fun fact - when steel gets to it's 'critical' temperature, it stops being magnetic, so that's another way you can test it. The steel is then quenched, this one in oil, which makes it hard.

Hardened steel is very brittle so it's usually tempered after hardening. For 01 steel that means putting it in an oven at 160-200C for a couple of hours. You lose some hardness but you gain back some toughness and flexibility.

After tempering, cleaning, polishing, polishing and so much polishing. Steel is so dirty and difficult to work with compared to the silver, gold and copper I'm more used to. But eventually, and after glueing and bolting a sycamore wood handle on, then giving it a final sharpen on my wetstone, I had a knife.

It is a Japanese-style Nakiri knife. Usually used for cutting vegetables, it's really nice to use. Lightweight and agile, the balance is nice and it's comfortable in my hand. It's not perfect and there are a few things I'd do differently but I can see myself using this on a daily basis. More pictures

I have already laid out and started shaping my next knife, which will be a slightly more complicated bunka knife

Any questions, please just ask and I'll do my best to answer.