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Hobbies come and go.  I'm hoping you still hang around here a bit.  I think many people here have gone through similar cycles.

Yes, both within the electronics hobby and in a broader sense. At the moment it is tube amps once again and particularly transformer winding. To be more precise, starting with winding transformers brought me back to building amps, gotta put all that iron somewhere. I never would have expected to be both fascinated and entertained to that degree by putting copper wire on a piece of plastic. But I really enjoy the whole process immensely. I also play piano and a bit of drums besides guitar, so that goes in cycles as well. Same story for sports...

I don't think I would like to have one, since I just love wood as a material way too much. But there are some very interesting engineering ideas in this.

Credit where credit is due: https://zeptobars.com/en/

I actually have a couple of his shots hanging on the walls of my workshop and in my office. Some of these look really amazing with great colors. Always fun when somebody asks for the artist.

OnSemi seems to have stopped production, but it is available from Central Semiconductor now (a company which often picks up parts that are being terminated by others). Mouser and Digikey have stock.

I always have a shitload of different projects going on at the same time, not just pedals, in various stages from development to actual building. Since most of these don't have to be finished at any certain time, they can be lying around for months or years and progress at different speeds. Unless I want to finish a particular thing and I stumble upon parts I am missing, I note them down in a spreadsheet. The parts are sorted by supplier (with annotation for what project, or I wouldn't remember what half the stuff was for), so once I order from Mouser when something more pressing comes up, I won't forget anything I want from Mouser.

Since you are new to effects building/electronics, you have to build up some stock of standard parts. Definitely get a full set of resistors from 1R to 10M, also a range of typical capacitors, ICs and transistors. There are several threads here where reasonable things to buy for beginners are discussed.

Love the drill pattern finish, cool stuff! Also a big fan of stamped letters, just a nice simple, rough look .

Suffering builds the character  .

I would propose not to leave those copper areas unconnected, not ideal from a noise standpoint.

I actually tried this a couple years ago when I looked at several CMOS overdrives. I used a dual complementary mosfet (I think it might have been this one) in order to minimize differences between the p and n part. Without a limiting resistor the current was above 1A, that's where I had the limiter of my power supply set. With a resistor in place it amplified just fine, but I never put any guitar through or used it in any real circuit. Too much other stuff going on...

You can register as business customer and use that, they don't check and don't care if you actually are. Just use "free artist" or some bullshit, worked for me. Also, I still sent several envelopes with a single small pcb in it, they all arrived. Just wrap it in enough paper so the whole envelope becomes stiffer. I don't know if they actually xray the stuff, or just do manual random tests, but 4/4 arrived.

This isn't a vintage amp with rotten components, just turn it on. If it has problems, there are fuses.

I might be wrong since the circuit was actually released that way, but I don't think this can work without the current limiting resistor. Both mosfets are biased on, this is an operating point a logic gate isn't supposed to have. They are both low resistance and a corresponding current will flow, only limited by the mosfets' drain resistance. That's why with any such effect circuit a resistor is included. But mosfets differ of course, so it might be the case that for BS170/250 the current is at a reasonable level without the resistor, you will have to find out for yourself. Also take note of the last comment on the page you linked: "the transistor go very hot".

10MHz is on the low end, but it should be fine for most audio work. Two channels, 30 bucks, I'd buy it without blinking.

I get along fine with a 200kHz scope (it's my other, non-$20 scope, which was still pretty cheap).

Sure you can, just depends what you're gonna do with it. If you want to trace an audio signal through a device, then it's fine. If you want to check a MHz clock on a digital IC, or look for RF oscillations in an amp, then you will run into its limitations.

10MHz is on the low end, but it should be fine for most audio work. Two channels, 30 bucks, I'd buy it without blinking.

That's just the most basic blues chord progression. You can hear it in a million different songs (Slow Ride, every other ZZ Top song, ...). Sounds like the typical youtube expert comment, I can't imagine any serious reviewer making that statement.

But it sounds cool, I like it. Nice fuzz sound and I also dig the background girls. I really liked their first three albums, for me their output has been going downhill ever since Magic Potion, so before their big breakthrough. This sounds like a good mix of their older sounds with better production without it being way too poppy as other singles I've heard over the last years.

You need to think in terms of power. Phantom power is 48V through a 3,4k resistor, so that's 0,68W. The full power output is basically a short. That doesn't help you much, because then you have no voltage to run anything. You get the maximum power transfer, when your load is the equivalent of a 3,4k resistor. That means, you halve the available voltage, and you have 24V through a 3,4k resistor to work with, which is 170mW. If you assume 100% efficiency when converting it to 9V, you can achieve 170mW/9V = 18mA as a maximum. So in reality it will be only 80-90% of that, depending on your DC-DC switcher.