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Welcome to /diy/, a place to:

Post and discuss /diy/ projects, ask questions regarding /diy/ topics and exchange ideas and techniques.

Please keep in mind:
- This is a SFW board. No fleshlights or other sex toys.
- No weapons. That goes to /k/ - Weapons. The workmanship and techniques involved in creating objects which could be used as weapons or the portion of a weapons project that involves them (e.g., forging steel for a blade, machining for gunsmithing, what epoxy can I use to fix my bow) may be discussed in /diy/, but discussing weapon-specific techniques/designs or the actual use of weapons is disallowed. Things such as fixed blade knives or axes are considered tools, things such as swords, guns or explosives are considered weapons.
- No drugs or drug paraphernalia (See Global Rule 1). If you want to discuss something that could involve such things (e.g., carving a tobacco pipe from wood) that's fine, but make sure it's /diy/ related and doesn't involve drugs or it will result in deletion/ban.

Helpful links:
https://sites.google.com/site/diyelmo/
http://www.engineeringtoolbox.com/
>>
Some friendly suggestions for posting:
- First ask Google, then ask /diy/. Your question will probably be better received if you do so.
- List available resources (tools, materials, budget, time, etc.)
- Try to use pictures and explain the goal, if possible
- Be patient, this is a slow board; your thread will be around for days.
- Share your results! /diy/ loves to see problems solved and projects completed!

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bored HVAC tech here, posting some pics of jobs I've found that were REKT. Starting off with this expansion tank, never seen this before but a hole rusted through the side of the tank.
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>>1331776
Just went to a friend's house a few weeks ago, he bought the house and asked me to look over the HVAC. The gas union was on upside down and the go-rilla that installed it cranked it so hard they split the union nut. Instead of replacing it, they doped the living shit out of it and hand tightened it. If anyone had pumped into it the line would've come apart.

>>1331819
One asshole who burned his house down by leaving a full gas can next to his water is why all new heaters have to have flame safety burners now.

>>1332158
LP might've gone splodey but not natural gas usually. Natural gas is lighter than air so it rises, the house would have to be empty for a while and have a major leak to fill up enough to blow. LP (propane) on the other hand is heavier than air and will pool on the floor until it gets deep enough to reach a lit pilot. Go look at gas explosions on YT.

>>1332171
It's a lot harder to blow up a house with gas than people think. I still leak test with a lighter, every so often I get a sweet little blue flame.

>>1332666
Fortunately no. If the house is super nasty I just refuse to go in it. I don't do roaches, sewage leaks, dog shit everywhere, etc. Also wash your hands after each call and before you eat, etc. I did get called to a house once, when I got to the door the guy tells me "oh yeah, by the way, my kid has chicken pox but I'm sure that's no big deal". No big deal except I've never had it.


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>>1332904
learn electrical x 1000
I'm new to the trade and I go to no heat no ac's other companies lead techs can't fix because it's "relay logic"
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>>1322011
it wasnt attached to the wall?
>>
Yo
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>>1335470
That's really convenient. You can shower and user your corded electric shaver at the same time!

What is the name of this thing?
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>>1335462
filename
>>
I know the name in portuguese... I wanna know whats the name of it in english

The portuguese name is not technical, its common saying theres no good translation other than the literal, and the literal translation means nothing of the sort...

It translates to "french hand"... try googling that and you will know my struggle to find out what is this called in english
>>
Iron bracket, or decorated iron bracket

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I need to upgrade my two prong outlet to 3 prongs.
My problem is that the box doesn't have a ground cable and it's made of plastic. I can't screw any screws cause none fit.

I tried looking at some YouTube videos but none helped.
Can you guys help me out?
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>>1335399
Nice deflection

You honestly think insurance companies are going to pay out for poor, non code wiring?
Its akin to arson, how are you gonna stop someone from intentionally wiring something poorly to burn out their house?

Stop being a fucking idiot
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>>1334637

>GFI every outlet

Even though its ugly as fuck, this is your best option OP. Anything else is gonna cost close to $1,000 or more after you figure drywall damage.

I would do at least the GFIs though.
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>>1334727

>a grounded breaker

You wut m8? You mean a GFI breaker? Yea, but you gotta walk to your panel every time it trips
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>>1335411
I'm not sure if the term is confusing to you or the way old homes were wired.

In much of the US, a 'breaker' is the main electrical distribution panel in common parlance. Commonwealth countries often call it a fuse box.

In really old homes in some areas, they didn't put any kind of ground in the house, even in the distribution panel. The neutral was run all the way to the pole where it would be attached to the nearest transformer. This can cause serious problems if you ever want to run grounds to your house as you have to put in a grounding rod. In older homes, the main distribution panel was often times inside a closet somewhere in the house so running a ground to that can be a nightmare.
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>>1335405
You would just drop their policy, Anon. They won't get homeowner's anywhere else either, since the house burning down will be public record. Well, they might, but they'll have insanely high premiums. Basically they won't be able to finance another house.

/g/ told me to come here for this

I'm wondering if it is viable and affordable to set up a solar panel on the top of a car in order to power all of my electronics.
I'm homeless and wanting to do this for my stuff like a PSP, nintendo switch, phone, desktop marijuana vaporizer, fan, space heater etc
How many hours would it take to charge a portable battery capable of running all that and how long would a charge last me?
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A space heater? No. You would get more heat if you opened the top of the vehicle and installed a double pane glass window to let the sun inside then made everything inside black. You'd have more heat from that than from your space heater, during the daytime.

As for everything else, it will depend on the surface area of the vehicle that can track the sun the best at any one time, how large your battery array will be, and how much power you'll be using. If you use too much power too fast, neither the battery array or solar array will be able to keep up.

For your small devices that have their own batteries, it should be fine and fairly affordable. However, you need to figure out how much money all of this will cost, how much electric your devices need, and how much fuel is needed per mile to move 1 pound of weight for your vehicle, how much your solar system and battery array will weigh, and finally the fuel to electric (1 gallon of gas = X watts of power). Only then will you know if the solar panel and battery array will be more money efficient than simply using your vehicle's battery and fuel to recharge/run your devices.

There should be online calculators for all this stuff.
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>>1335373
>homeless
>has bought the newest nintendo console
I think you need to get your priorities checked. Or are you just completely satisfied with living in a car? If you’re all fine and happy living in a car then honestly good for you, that sounds like a somewhat fun lifestyle
>>
First off, sort yourself out. I recommend the self improvement generals on /pol/ or wherever it is now.

Second off. Learn what an amp hour is.
If you want to charge say, two 10,000mah battery banks in a day, you need 20 amps in an hour.
But day lasts for about 4 hours on a fixed angle panel, depending on your location. So you need 5 amps in an hour.
Now here's the confusing part though. Amps is a variation of voltage. These calculations are also for 5 volts. So if you have a solar panel that puts out 5 volts, yay, you need a 5 amp panel.
Most put out 12v though, so you need a 2.1 amp panel.
But fuck, here's another bombshell for you. There's this thing that's called watts. It would be really fucking nice if everyone used watts, but no one ever does for batteries.
You get watts by multiplying volts and amps, so if you get a 12v panel that ends to put out 2.1 amps, it will have to at least be 25.2 watts.
But here's another fuck up. There's this other thing that is called loss. You can do a bunch of stupid math, or just estimate it. If you are not doing anything out of the ordinary or in large scale, then just plan for a 75% efficiency. This means that 25% of the power you will make will not end up coming out of your battery. So basically multiply your watts at the panel by 1.25. Therefore, you need a 32w panel to charge two 10,000mah battery banks in one day.
>>
Forgot to mention that it works in reverse.
A 10 amp hour battery will give you 10 amps in one hour.
Or 5 amps in two hours
Or 1 amp in fucking 10 hours.
Check the chargers for your devices and see what amperage they are meant to draw, and then figure out how many hours they will be spending on charge, and do the math.
>>
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>>1335373
>nintendo switch

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If the return circuit is severed, will the bulb still light up?
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>>1333426
>he doesn't eat 2kg fries fried in tallow with mayonnaise and ketchup plus putting 10 burgers on top of a familiar size ordered pizza and then putting another pizza upside down on top so it closes like a sandwich and then drinking up to 2 liters of coke as a regular meal

lmao, if you think this is too much or something you must be some kind of 3rd world starving poo in loo.
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>>1333090
Its actually direct current
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>>1334222
I isn't if you casually change the polarity 50 times per second.
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>>1333654
Which one are you?
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>>1333639
DONT DO THIS, THEY ARE MADE FOR LOAD ONLY ON THE CORNERS, THE SIDES WILL CAVE IN WHEN YOU BACKFILL OR MAYBE LATER ON RESULTING IN YOUR DEATH. YOU HAVE BEEN WARNED.....

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Hey, lockpickers, how would you defeat a door that was barred?

https://www.youtube.com/watch?time_continue=198&v=7vLDCJk3wNk
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>>1334382
I'd lift the bar up and open the door.
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>>1334382
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>>1334382
i'll get through the window.
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>>1334696
They prevent the ends of the bar from being bent out
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>>1334806
Watch the videos, they are inside in less than 2 minutes, a grinder would take longer. They are breaching to save the lives of people trapped inside.

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Old thread >>1321687

Still new pasta, feel free to contribute

>general info
https://www.3dhubs.com/what-is-3d-printing
https://www.3dhubs.com/knowledge-base
Additive Manufacturing Technologies:3D Printing, Rapid Prototyping, and Direct Digital Manufacturing, Gibson Rosen Stucker

>open source community
http://reprap.org/wiki/RepRap_Machines
http://forums.reprap.org/
#RepRap @freenode

>buyfag buyers guide

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>>1334562
305
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>>1335188
As far as my research has shown, many people have made them since as early as 2013. Some have been very big petrol engine ones (the size of a shopping trolley), and the most well known example is some autist attempt to make it super super light (MIT?). I don't believe being super light is required.
>>
>>1335096
python ;)
>>
>>1335096
how libre is reprap and most of these open source printers?
I never have really thought about it
>>
>>1335182
>>1335204
Ender 2 has no eccentrics so apparently I will have to try and print some shit first and then I will get my eccentrics CNC milled.

Hello /DIY/

I've recently wanted to send objects into orbit for cheap. Right now I'm considering attaching a smart phone to some balloons, then creating a really cheap and appropriate propellant to navigate a smart phone in LEO

Considering the Mass of a smart phone, I thought of a few options that could send my smart phone into orbit under velocity variable requirements.

- Solar Sail
- battery powered thruster
- replicate Chemical propellant rockets, except at a home-made micro level for a smart phone, like for satellites

Whats my mission ? One of them is to take photos of the entrance to hollow earth
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>>1329794
This is the smallest rocket to ever put anything in orbit. It put a single cubesat in orbit. Notice how it's pretty goddamn big? It uses TONNAGE quantities of solid rocket propellant. Working with that much solid rocket propellant is a good way to get either arrested or blown up.
>>
>>1330500
>prepare phone with large battery pack
>tie phone to balloons
>livestream footage of the phone to somewhere so you can know when the balloons pop
>ideally you build a very tall privatd cell tower so you can still communicate with your phone
>if not then just buy a drone and some expensive shit so the phone can communicate to your phone and then send the information down to you
>once balloons start popping remotely start your rocket contraption so your phone can make it through the rest of the atmosphere
>this will be more fuel efficient and hopsfully help your phone have a higher chance of getting into orbit
I’m still questioning how the fuck anything will be able to endure this without getting damaged or dying or some shit but whatever
>hopefully the thinner atmosphere will make it easier for your phone to get into fucking orbit
>wow good job your phone is in orbit now how the fuck do you intend to communicate any information through it? It’s not liks you have a fucking satelli-
>buy a satellite and strap it on your phone contraption
>now you can hopefully communicate with your phone but probably only at certain times of the day
How the fuck do you stop other people from looking at your phone?
>add a password or something

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>>1330500
>It's going to fucking pop once it gets to high. You are not smart
While yes people use better balloons at lower pressure to go around this problem, I've been wondering for years if this method will work.

A tiny pressure relief valve on the balloon, so as it expands at higher altitude it will deflate enough to not burst the balloon.
>>
>>1335362
Looks like it went up 190km. I am curious how much less propellant would be needed if it was a:

https://en.wikipedia.org/wiki/Rockoon
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>>1335460
https://en.wikipedia.org/wiki/Zero2infinity

Looks like this company is doing that soon.

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So I've been looking to invest in tools and have been looking at husky, they seem to be affordable and have a life time warranty. Anyone have experience with how they hold up?
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>>1333224
Best way to find good tools is go to garagejournal.com’s forum and read. Read the hf pass/fail threads as well. As stated earlier, harbor junk angle grinders, both the 4.5 and 7 inch just won’t die. Personally for hand tools I have a lot of snap on, Chinese craftsman, Taiwan made hf, and proto.
>>
>>1333436
>>1333438
Sorry, I can't hear you over how awesome my loadout looks.
>>
>>1333985
Strongly disagree, had a hf grinder literally burst into flames in my hand wasn't working it long either
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>>1335433
I had one where a power switch failed in the option position. It was on a balancer too so the place it was plugged in was about 10 feet in the air on a beam. Luckily, our shop foreman was an old hand at shit like this and had the elevated outlets put on their own switch so it was easy to turn off.
>>
>>1333790
I have that bag. I switched from open top or bin style bags because I wanted protection from the elements for my tools, and to keep others from being able to easily grab a screwdriver or pair of pliers from my bag.

Great for any technician or maintenance type job. I'm a general contractor that does service/maintenance along with remodel work during open business hours.

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>"and this is our sons room... hes quite the craftsman."
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>>1333794
duuuuudeee i just thougt about something
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>>1328877
And Guyver, don't forget him.
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>>1325906
0/10 would’ve been better if all the figures were of the same 1 or 2 girls
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>>1329868
Holy shit I would love to come in with like 100 bucks and just buy off all that shit, keep all the merch for anime I like, give away things to friends for the stuff I don’t care about, and sell the rest and make a fucking fortune

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Hi!

I'd like to make a small blood vial necklace with my own blood for a gift. I was just wondering of what I've to do to keep the blood liquid in the vial and how to extract that blood harmlessly.
Thanks
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>>1334086
You people are funny with your anticoagulants and stuff.

This is a vial of blood. All you do is put a alcohol and then enough blood to make it look blood like. The alcohol will keep it liquid.
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>>1335328
It will seperate out apparently, it's not like it's just a solution; blood is opaque.
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>>1335331
Yeah it does, but then you do this crazy complicated procedure called shaking the vial.
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>>1328021
Oh this is fucking gold, Jesus. Seriously though what the fuck?
>>
lol you people are nutso

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I want to mount my TV in my living room. Never mounted on before, is there anything I should know before doing it?

Pic Related
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Read the instructions.

READ THE INSTRUCTIONS.

That out of the way, in general you probably want to mount so that it bridges across studs and it mounted directly to them. Make sure your mount is really rated for the weight of the TV you are using. Think about how you want to run the cabling now.
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>>1335446
oh yeah, and having help helps. 2 people or more.
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>>1335446
Thanks for heads up on cabling, for some reason that slipped my mind.

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I'm tired of the same repetetive "how to hit a nail" or the "I think I'm hot shit" youtube channels. It's a struggle to find any decent content anymore.

Is there anyone that has anything new to show?
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>>1333657
>not shill tool reviews
AvE does good ones. Takes tools apart and impartially criticizes their design choices. He never accepts free tools for reviews.
He's pretty knowledgeable, doesn't know quite as much as he thinks he is, but neither does anybody else.
>>
>>1331490
yes!
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>>1333695
U U U U
>>
I think the point of this thread has been missed slightly.

I'm not looking for the guy who makes 25k+ a month from patreon donations for taking apart tools, reading numbers and giving them a poke with a screwdriver with some added made up words.

I'm looking for the highly skilled and knowledgable people who know their craft well. Not your "Let's make a forge out of a coke can and a popsicle stick" type of channels.

Here's some channels I enjoy:

Woodturner21: Possibly one of the best high speed production turners on youtube. Haven't seen anyone else like it.https://www.youtube.com/watch?v=MOuznRWUGos

Woodworking Tools: Don't let the name fool you, these are genuine bonafide Chinese cowboys. All the processes are absolutely horrendous and make even the most experienced wince. End product is pretty good though. https://www.youtube.com/watch?v=9c2mTW33i6Q

Jordswoodshop: Comes across as a bit of a pretentious prick but at least he makes decent shit instead of seeing whether water freezes or not. https://www.youtube.com/watch?v=o8djAcBL4EM

Jeremy Schmidt: American Marius Hornberger https://www.youtube.com/watch?v=a_RlL1O-bK4

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>>1327665
Idk, I went on a website once that just gives me a completely random youtube video and I got one that was showing you how to make a specific kind of knife. But I also had to shift through tons of shit like some kids video presentation for class and some spanish wannabe minecraft youtubers so idk.

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In this thread we talk about:
- ham radio
- projects you have going on related to radio
- baluns and ununs on salvaged cores
- compact antennas for 160m band.
- SDR
- discussing how should a new general trhead look like.
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What is the worst SWR I can operate at 100 watts with on an IC-7300? I cannot get my antenna (EMCOMM on a 9:1 Unun) to tune less than 3:1 on 80 Meters. Really want to talk on 80 and just want to know if 3:1 is okay enough.
>>
>>1335385
>Project Sanguine
My grandad had property within few miles of military base with over-the-horizon radar installation. It killed everything, both TV & AM radios. Good thing they didn't operate it 24/7.
>>
>>1335430
Check the manual and/or build yourself 1:16 unun.

I made an UN-UN with windings commutated by 2 relays and I can change select 1:4, 1:9, 1:16 remotely. Do you need a schematic for that?
>>
>>1335434
Please. I can get the SWR to 3:1 but nothing better and the manual doesn't say if it's safe for the finals or not. The only activity I hear when I fire up my rig that I want to talk to is on 80-75 Meters but I'm afraid to burn my finals if my SWR is out of a safe range for the rig. I'm willing to try anything to get to even 2:1.
>>
>>1335443
will post in few hours



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