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File: heating-element.jpg (68 KB, 1000x1000)
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How do these things work? I have an oven that's been acting strange and I decided I would test the heating element by connecting it directly to 220V AC. I connected phase to the far-right terminal, neutral to the far-left terminal and ground to the middle one. At this point I was sure it would have shorted, since far-right and far-left terminals had continuity, but surprisingly it didn't and the heating element ended up working just fine. Why did it work? Didn't I technically connect phase to neutral, e.g. shorted the circuit?
12 replies omitted. Click here to view.
>Why did it work? Didn't I technically connect phase to neutral, e.g. shorted the circuit?
dude, the element IS the circuit. you didn't short anything.

this is as retarded as touching wires to a lightbulb and being shocked it lit up. "b-bbut I shorted the circuit!!!"
But the whole thing is heating up like crazy.
That's definitely a short.
it's a heating element!
Just taking a piss on OP, mate.
You need to learn basic electrical theory which will serve you well. Watch some videos because this format is not suitable and all will be clear.

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how do i make a submarine like the euronaut? how thick should the pressure hull be?
12 replies and 1 image omitted. Click here to view.
Well, he can always stick some grenades inside to equalize the pressure.
Few YT videos of people doing this. Or defect to North Korean / Cartels to build for them.
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Circles resist pressure naturally.
Only need a couple feet of depth to ambush NGO invasion boats...
You ask Doug of SV Seeker fame how he crushed the haters. Shipping containers also work well. I really like them for storing imitation crab meat and model railroads. The Russian Navy uses them at their Black Sea submersible base where the latest submarine (disguised as a sinking battle cruiser) acts as a mothership. Submarines are like small cucksheds that go in water. They offer amniotic floaty peace. I too like to dream of them and the best way to dream is asking to be spoonfed. Speaking of spoonfeeding, try cum. It fills spoons and if it's mine is rather yummy. Yer mum gargles mine in apology for her retarded offspring defiling the planet.

Hello /diy/, /fit/izen here. The other day I bought a barbell for my (frugal) home gym, as I had only had dumbbells before that.
>Pic rel is a plate from my dumbbell.
Unfortunately the hole in the plate just barely doesn't fit the diametre of the part of the barbell on which you put plates, so I want to somehow widen the holes so they can /fit/. Is there a smart way of doing this?
33 replies and 4 images omitted. Click here to view.
op, i forgot to mention that you could also easily do this with a rotary vise setup and a mini mill or (if you're extremely brave/retarded) drill press with nigger-rigged sanding attachment
Do you have any black friends hahaha XD
Send it on a gap year to Thailand to find itself
put sandpaper on your dick and fuck it
under rated

What are some of them must have items for a green house?

Does it require
>Exhaust fans
>Circulation fans

When there's passive ventilation?

What items are essential?
43 replies and 7 images omitted. Click here to view.
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Can I make a small "greenhouse" in my basement? Basically I want to dangle an LED light or 2 from the ceiling, hooked up to a timer, in an enclosed space that houses vegetable plants and use the excess water from my humidifiers that run during winter to automatically water them.
Will mold be a problem? What could go wrong?
yes. look at grow tents and as long as you control humidity or get good air circulation you shouldnt have a mold problem.
ok thanks
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>cops bust into basement
>anon was just growing a bunch of green beans
One of neigbours on my street was a peak hotsauce maniac, it got to a point where he bought equipment and was wasting shitton of electricity to grow the ultimate peak chilly.
Got raided by full police commando because they thought he was growing weed.

File: lathe parts.jpg (160 KB, 1191x648)
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Post images like this showing the names of different machine parts. Can be any machine, combustion engines, rocket engines, pumps, pipes, anything.
8 replies and 6 images omitted. Click here to view.
ah you;re so funny, I'm fuckign dying of laughter, what a comedic genius, kys.
you're fucking shit
this could have been such an informative thread.
really? I doubt it. no one has posted anything else, most likely because they don't have images like OP's. those images are much better anyways.
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ok never mind then. fuck it.
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Question: Do different metals have different flavors? If so, what metal is your favorite flavor?
318 replies and 72 images omitted. Click here to view.
forgot to mention I broke out the lump charcoal

also, I didn't mean fail. I meant I broke it.
Upon cooling an alloy or impure mixture of metal can segragate from a low melting point liquid (a molten eutectic) into a two-phase solid with two high melting temperatures. So you can theoretically melt a higher melting point metal mixture going in one direction that doesn't melt again.
I don't understand. let me conjecture what you're saying

so you say two phase. I'm early here, so I think slag is two phase. you have some high melting impurities and the pure stuff melts. I'd like to imagine that I hit 1500 so,well, I'm sure that anybody else could follow me when I assume that aluminum is really the only thing I should be seeing here. I think that it's because it's not an alloy that I don't get you. it is.there's some manganese and whatevernot in those cans, but other than that it was a straight melt.

to I don't follow you. I don't see what you mean here. help pls
I will do a lesson next thread.
oh yeah nvm I get you but this isn't much of an alloy

I noticed some mold buildup a week ago, so i sprayed some bleach and rubbed it with a paper towel. The ceiling was soft and punctured. How can I patch this up?
21 replies omitted. Click here to view.
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>this is now /mold/ general
the inlet hose on my fridge wasn't installed securely and was leaking into my floorboard for months. opened up the basement ceiling yesterday to find this. that stringy white shit is mold isn't it? what do
you get a respirator and go to town with whatever mold killer you can find at the hardware store.
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remove the damaged drywall/plaster, and spray the wood with pic related or something equivalent
dont bother with bleach it doesnt work on porous surfaces
wear goggles, gloves and a mask
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Draw a map on your floorboard, they'll find the efficient way
I drenched it with pic rel. should I need to run a dehumidifier at some point? if so, before or after treating the mold?

Bought a couch and it came without pre-drilled holes for the legs. I got a set of legs I want to put on it since the plastic ones it came with look like garbage anyway.

How the fuck do I install these leg holder things without fucking it all up though? I understand I have to drill some holes for the screws to pass through these and further in but how to make a hole so fine that this thing can plug into it and the small screws around the sides also go in without breaking the "wood wall" through the side of the large hole? They're so close together it's like I need a high precision drill or something.

I'm thinking maybe I should just screw the center hole and not the 3 small holes and let the big screw in the leg hold this thing in place or look for a bracket where the small holes are further out.
13 replies and 4 images omitted. Click here to view.
What's worse is they can Google to find a picture but not Google their question.
Because all Google does is try to sell me stuff and show listicles. "People also searched for: best living room sofa 2022”
It's dead and useless.
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The legs are on now. It was a pain in the ass because I didn't have a 1/2 wood bit in my toolkit but I had 3/8 so I used that and rotated to slowly widen the center holes until the plug thing fit.

I got the couch tipped back upright and the legs didn't snap off from the weight nor is it noticeably un-level so I guess I did ok. Thank you /diy/.

good. now we dont have to reply to your fucking dumbass anymore with simple advice that you were too fucking stupid to do in the first place. also go shove that couch up your ass, dickcheese!
It doesn't fit in my ass it's bigger than my whole body

What do you guys think about my new lampshade?
8 replies and 1 image omitted. Click here to view.
>supports all lighting formats flawlessly
controls are steep learning curve though
and I really wish it would natively display frame numbers .. of, uhh, the bulbs
can it emit 4K (Kelvins) color???
The older I get the more I realize VLC is one of the best applications ever made.
>not a fan
But its positively glowing with praise!
<Please wait: rendering subtitle cache>

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Would a fourier transform or wavelet transform be better for characterizing the sound of tapping on different surfaces? I'm trying to train a machine learning model to identify different tapping sounds. So far I've used a canned FFT function on raw audio data and have been able to train one to tell a desk tap from a keyboard key press almost every time. Although taps on similar sounding surfaces have proven more difficult. Would wavelets be better? I know that Fourier transforms are best for stationary signals whose frequencies don't change over time. I can't imagine these sounds have unwavering frequencies, but perhaps they are brief enough to where that doesn't matter?
a tap is more than 1 frequency, usually a delicious combo with a distinct time to decay for particular frequencies.
id assume they wouldn't change frequencies but youre being autistically vague. u tapping a table? cymbal? some ass?
My approach would be looking for particular fft values by freq, amp, phase and rate of decay. wavelets are possible but sound like alot more work
I recommend Dynamic Time Warping (DTW).

File: basedstuff.jpg (39 KB, 612x343)
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Share your power tools and your rating/comments

Drill: Alpha Tools SBM650E (8/10, still holds up after many years. -2 for the suboptimal hammer drill feature but still makes a difference in concrete)
Jigsaw: Bosch PST 650 (9/10, incredible and cheapish tool. -1 for not having pendulum settings)
Angle grinder: Bosch GWS 7-115 (10/10 great quality good power to cut and grind metal)
Rotary tool: Dremel 3000 (10/10, amazing piece of kit that is on the cheap side and is the usual Dremel power/quality you'd probably expect)

As far as my wishlist goes,
Hand planer: Bosch GHO 6500
Sander: Bosch Pex 300
Hand router: Bosch POF 1400
Impact driver: have no idea which one

Currently no need for a circular saw or a table saw and anything "above" like a planer (the big ones) or jointer so far but am open to suggestions. There are no other good brands in this country so yes, am a ginormous corded bosch fanboy.
8 replies omitted. Click here to view.
Depends on which dewalt tool you want to buy I guess. I for one had older bosch tools be absolute crap once or twice but going mainstream *should* give you a good tool. Check the reviews and its specifications and if the reviews say it delivers, guess it is fine.

If you didn't have a drill before, it will come in handy one day. It is enough to drill holes in wood so I guess it wasn't really that bad
I met some junkie kid who offered to do that for me at Bass Pro shops, 50% off anything not locked in a case.

I like muh Lifetime Service Agreement though. Requires a receipt.
That new dewalt cut off tool looks nice.
Looking a backpack blower tho and want the makita 4 cycle blower but nobody but Amazon and uline sells them. Can't find used. Are they shit? I like that they're only 70db
>They're all made in China
My impact and drill were both made in the us

File: electricity-charmer.jpg (87 KB, 1119x903)
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Got an apartment I'm doing some repairs on and ran into an outlet that's being weird and wanted some help on what could be the issue. Keep in mind this is a new outlet, the outlet was working for awhile, then suddenly stopped working after a few hours, the breaker isn't tripped, all the other outlets in the room work, the light switch that turns it on works and is on, there's no GFCI's installed that could have tripped.
How new was the build?
When was it working and for how long?
Do you have socket testers?
Could be loose terminals or damaged cable.
Not sure if you can but flip that breaker on and off for that room.
Is the socket physically damaged by any means?
Also if you are looking for help it's better to post the image of the socket instead of a meme
if you live in a major city, it is nothing and should not be photographed or talked about. Go now, I have spoken
>ran into an outlet that's being weird
what does this mean?
keep reading....
OP flip the light switch it is connected to to the opposite position and try again
I don't know. Pull the outlet out of the wall and see if anything is loose. If it worked for a while then stopped, either something broke or came loose. And since it's just the one outlet, problem is either in that box or in a neighboring box, of with the switch that's allegedly controlling it.

Patent number: 10322827
Abstract: A high frequency gravitational wave generator including a gas filled shell with an outer shell surface, microwave emitters, sound generators, and acoustic vibration resonant gas-filled cavities. The outer shell surface is electrically charged and vibrated by the microwave emitters to generate a first electromagnetic field. The acoustic vibration resonant gas-filled cavities each have a cavity surface that can be electrically charged and vibrated by acoustic energy from the sound generators such that a second electromagnetic field is generated. The two acoustic vibration resonant gas-filled cavities are able to counter spin relative to each other to provide stability, and propagating gravitational field fluctuations are generated when the second electromagnetic field propagates through the first electromagnetic field.
I can't see how microwave emitters and acoustic generators could produce those magnetic fields. Let alone gravitational waves. This is stupid and I hope you're high and don't seriously think this is not stupid.

Go home Wayne, you're drunk.

Also you could make gravitational waves by swinging a heavy ball around. Whether or not you can detect that and whether anyone gives a shit is another matter.
ha, fucking crazy. wonder how much he takes home every month.
Fuid and gas instead

Patent number: 10135366
Abstract: The electromagnetic field generator includes a shell, an electrostatic generator, a power plant, a thermoelectric generator, and an electric motor. The shell has embedded polycrystalline ferroelectric ceramic material which is polarized such that the ceramic material exhibits strong Piezoelectric Effect properties thus inducing high frequency vibrations. The shell may be further doped with radioactive elements which under high frequency vibrations induce gamma ray emission. The electrostatic generator is for charging up the shell and is disposed within the shell. The power plant is to generate thermal power, and is disposed within the sphere. The thermoelectric generator is to convert the thermal power generated by the power plant to electrical energy. The electric motor powered by the electrical energy generated by the thermoelectric generator, and supplies input voltage such that the shell spins at high angular speeds, vibrates at high frequencies, and generates an electromagnetic field.

Abstract: A plasma compression fusion device which includes a hollow duct and at least one pair of opposing counter-spinning dynamic fusors. The hollow duct includes a vacuum chamber disposed within the hollow duct. Each dynamic fusor has a plurality of orifices and an outer surface which is electrically charged. In combination, the pair(s) of dynamic fusors create a concentrated magnetic energy flux and electromagnetic radiation within the vacuum chamber, whereby the concentrated magnetic energy flux compresses a mixture of gases that are injected through the orifices to the vacuum chamber such that a plasma core is created, and the to electromagnetic radiation heats the plasma core, while produced magnetic fields confine the plasma core between the dynamic fusors, such that when an additional mixture of gases is introduced into the plasma core through the orifices, an energy gain is created.
Abstract: A craft using an inertial mass reduction device comprises of an inner resonant cavity wall, an outer resonant cavity, and microwave emitters. The electrically charged outer resonant cavity wall and the electrically insulated inner resonant cavity wall form a resonant cavity. The microwave emitters create high frequency electromagnetic waves throughout the resonant cavity causing the resonant cavity to vibrate in an accelerated mode and create a local polarized vacuum outside the outer resonant cavity wall.

Patent number: 7080504
Abstract: The invention is a turbojet propulsion system which includes a compressor section, a turbine section coupled by a shaft to the compressor section, a combustion section mounted between the compressor section and the turbine section, and an exhaust duct coupled to the aft end of said turbine section. A fuel delivery system is incorporated for supplying fuel to the combustion section. A laser assembly provides electromagnetic radiation to the combustion section. An electrical generator coupled to the turbine driven shaft powers the laser assembly.

How easy to build something like this WITHOUT welding?
66 replies and 16 images omitted. Click here to view.
Excellent work OP, with what name shall ye christen it?
You have a lovely tiny home.
That's actually impressively slick!
>How easy to build something like this WITHOUT welding?
You buck up and spend the $100 on a welder you retard.
brakes are for queers

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I just had a situation, I live in this older building that was recently renovated, so people can see the lights in the building from the main street/street walk after god knows how many years. I have my own apartment and have only one neighbour in the apartment next to me, who is living with his gf.

He just knocked on my door, came in completely shocked and said he saw two persons peeking through the window (like literary going to the window and peeking in). I don't know if he opened the window or went around the house, but he said he then talked to them and they said they liked the building since it's old and were just curious and that they are also curious about the newly build flat next to us and what's going on in this place. I asked him if they were perhaps just local people actually being interested and whatk ind of vibes they gave off. He said they were middle aged men giving off strange vibes, as if they were up to something and were not actually curious.
11 replies and 3 images omitted. Click here to view.
part 2

I'm not going to go any further, I know you can't put all the pieces together with your small brains and lack of a lot of details life wise, but I'm pretty sure nobody is going to just rob you the first time in this situation and even if they try the neighbour would hear the yelling and know something's up. Pretty sure if you are a robber checking building out to rob, you don't carry shit on you the first time you go and check things out, since you want to look ordinary and normal, etc..
get door jams and other easily put in/on door reinforcement(protect from ramming door down shit)
window shutters, even if they're held in place with clamps, the sight of seeing metal panels behind a window MAY keep them from keeping at the windows(must be able to take a hammer/crowbar slam)
if law enforcement does this, have spray tags on doors/windows(if someone brakes in/trips them, they get sprayed with UV marking spray, they're generally scented so that robbers/burglers just think its there to make the place smell good) you tell the cops, they shine UV on random asshats, they get arrested because it's legally identifiable aka red handed

pay local kids to throw shit and crap/piss at non-locals casing/trying to break into your place, some beers/etc for the neighbors to keep an eye on your place like >>2469967
Put some cameras up like other anons mentioned for sure. Get a chain lock on your door if you don't have one already. An axe is a good idea, but I lean towards machetes
Get a water and a dog food bowl and put them near your window. Makes it look like you have a dog without pissing off ur landlord.

An open dog cage is also a good idea.
#1 don't be a bitch. You're acting like a bitch they didn't do anything. They could have done something if they wanted, but they didn't.

> You could get shot by anybody at anytime. No matter what. Safety is an illusion. Don't turn into a paranoid Android, you'll be targetted more.

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