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File: electric.jpg (191 KB, 1000x960)
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Found this wiring behind a long-dead battery powered smoke detector.
The smoke detector had been there for at least 25 years (I know, I know - I'm replacing it tomorrow with a smoke/carbon monoxide detector tomorrow), but I found it curious that it was covering this unused outlet box.

But what I'm really wanting to identify is the red wire that is attached to the box itself? Is it a ground? If so, shouldn't it be green or bare?
Also, the two sheathed wires are black and grey. I know black is hot and white is neutral, so I'm guessing the grey is the same as white?
This is in USA and the house (a mobile home) was built in 1965.
44 replies and 5 images omitted. Click here to view.
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>>1514405
Shouldn't the black and red wires from the same line be connected to tandem breakers? On the panel I notice one of them (on the bottom) is, but the other is not. I also see two wires connected to a single breaker...
>>
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>>1514419
>be connected to tandem breakers?
the only reason to use a tandem breaker is if your adding circuits and have used up all your breaker slots.
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>>1514496
>your
fuck! *you're
>>
>>1514497
Are you yelling at yourself? I think that it is an unwritten rule, that we tolerate typos. Everyone F's up.
>>
>>1514506
>Are you yelling at yourself?
YES!

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Thread hymn.

https://www.youtube.com/watch?v=PGNiXGX2nLU

Last thread:boards.4channel.org/diy/thread/1495044

>Haas automation videos.
https://www.youtube.com/user/haasautomation/playlists
>Titans of CNC
https://www.youtube.com/user/titanamericanbuilt/playlists
249 replies and 28 images omitted. Click here to view.
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>>1514453
Duh, nobody said otherwise.
>>
>>1514412
CNC lathe and some grooving tools would make it easy

>face, drill, tap, rough OD with 0.150" or so left to hold it to the bar, then use grooving tool to finish OD (the ball, etc.) and finally part it off with a smooth profile of the ball.
>>
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>>1514414
I don't have my actual cad/cam files on this computer but it's basically something like this. the toolpaths I have written round the end off and rough the contour with a 55 degree rh tool and then finish the contour with a 35 degree straight tool.
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>>1514484
what kind of tool would you need to do that? the only grooving tools I have are the shitty cutoff bars that can only go straight in. I have some budget for tooling so I could buy one if it's not too expensive.
>>
>>1514512
Drill and tap. Right hand 35 degree turning tool profile up to that .9 diameter. Backside of diameter and cutoff with parting tool.

Cheap ways to make your home 'smart'? I bought a google home mini device but want it to be able to turn my TV on and control ac etc
17 replies and 3 images omitted. Click here to view.
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>>1513159
A more important question is why anyone would want a """smart""" home in the first place?
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>>1513159
Go out the door, the net IQ of your home will jump instantly.
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>>1514147
Automating boring and repetitive tasks. Or if you want the meme answer ... AMERIFATS AMIRITE?
>>
>>1514330
>Automating boring and repetitive tasks.
Using a tv remote and setting a thermostat are too manual labor intensive?
What next, a smart toilet to wipe your ass? Or better yet, a recliner that detects when you start shitting and opens a trap door+bidet?
>>
>>1513159
diy home assistant Mycroft. Runs on rpi, script gpio pins to do things when voice commanded.

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wtf is this insert called and where can I get some to make my own nib holders.
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>>1512796

no, just no
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>>1512796
just a hole with a stick in it.
drill hole. glue in a smaller stick
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>>1514268
I'd rather have a pack of those blue inserts. no way I got the finesse for a double stick hole.
>>
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>>1512796
holy fuck you have fat hands. dude, go on a diet, for real.

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Hey all,

I do a bit of metal detecting and find tons of these 22lr shells. Got 2 small jars full of them pretty much

Any ideas on some diy project i can use them for?
I was thinking about reloading them just for shits n giggles but it really isn't worth the time and money.
25 replies and 7 images omitted. Click here to view.
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>>1513981
Except, as others have said, you can reload 22lr casings. It's a total pain in the ass, too expensive, and not worth it at all; but you can do it. I agree that using them for bullet jackets is much more worthwhile, though not as precise as using actual jacket material.

>>1513153
I've melted the empties down to cast muzzleloader buttplates and trigger guards with. They work great, you just have to be careful not to get any live rounds in there as you're melting, or it gets exciting really fast.
>>
>>1514005
If you have pen/knife making stuff you more than likely have everything you need already. The only specialty thing beyond that is the greensand. A crucible will only need to be as large as what you'll be casting, well slightly larger than that, but you get the idea. Brass melts as high as 1,720F/937C depending on alloy. Any iron/steel pipe with a cap on the end will work as a crucible for that. You can normally get short joints of gas pipe for $5-$10 at most hardware stores.

Seriously, though, this is /diy/ and everyone here should have a propane-fired coffee can forge and a bucket of greensand. You'd probably use it more than a sink wrench.
>>
>>1514000
Yeah that's not too bad of an idea for melting it. I saw King Of Random on Youtube made something similar like a year or so ago. It wouldn't be a 1-time use either as I've got tons of lead to be melted to new fishing sinkers :D

>>1514001
Back when I was a kid I used to do this, not only with .22 shells but 303's and 308's. Jam them full of a mix of crushed match heads and the powdered side of the match striker. Then break up some sparklers and lay it on top (basically thermite) and set them off. Never ends well lol

>>1513999
>If someone wanted to melt range brass and incorporate into a pen it wouldn’t be too hard just time consuming and possibly cost a lot of money compared to buying brass stock.
I mean, it would look pretty sick if you made it from scratch with mixed metals. It'd basically be a Damascus pen? 10/10 would buy. Definitely be cool to see this made
>>
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>>1514504
well shit it's already been done BUT HOW SICK DOES THAT LOOK
>>
>>1513899
Recognize this anon for the good tip.

I used them to plug drilled holes in a sliding door after dog kicked the bucket and we removed her door.
They expand easy.

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Hey /diy/
Some of you are very skilled either through doing a trade or general life lessons. My dad knew nothing about anything diy related and as such i can't even change a tire or drill chuck.
How do I go about learning things, specifically mechanics. If i can't change a tyre how can i hope to completely do up an old rust bucket i bought?
The plan is to install a new engine, roll cage, differential, etc. I understand how the parts work but not how to put them in
23 replies and 1 image omitted. Click here to view.
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>>1514231
My boomer old man neighbors are some weekend warriors but they suck at diagnosing anything that can’t be fixed with starter fluid and fresh oil. They don’t understand that it’s 2018 and we have OBD-II plus Google.
>>
>>1514303
>and fresh oil.

no boomer ever looked at a car that ran like shit and said "hey man it needs frash oil"

btw I like you
>>
>>1514305
That’s literally what my neighbors did when they brought me that generator a couple months back. They were like “We put oil in it and sprayed carb cleaner and starter fluid in there but it won’t stay running” and they didn’t even know there was an oil filter.
>>
>>1514303
Hmm. Maybe I'm stuck in the middle. I was born in 77 and have experienced the old and new. I have a piece of paper that says that I am a mechanic and have often been amused at young ones misinterpreting data from OBD. I have learned the most from books and my elders. I am not past using the internet but, there is a lot of bullcrap there. Just look at this thread. I am older now and I have believed since I was young that experience "is" overrated though. With that said, there is reason to respect elders. They were young once too. Can't see that being old makes you stupid.
>>
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>>1514475
>amused at young ones misinterpreting data from OBD

Not young (75) but the comments caused me to remember to check for updates on my Autel MD805.
Sure enough, there are some. They're ones I'll never use but I'll download them anyway coz' they're free so why not.

Hi /diy/, what is this?
48 replies and 7 images omitted. Click here to view.
>>
>>1514438
>Torpedo Director

Not OP, but cool!
I thought it was some sort of aiming device missing a scope (the top mount).
Found this webby page.
http://www.tvre.org/en/torpedo-directors

I love old mechanical computers
>>
>>1514438
Yahoo!
>>
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>>1514438
Oh, thank god
>>
>>1514442
It makes socks.
>>
>>1514438
>I have the answer for you, OP.
FINALLY! - Maybe I'll get some sleep tonight...

File: drone_nice.webm (2.84 MB, 640x360)
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Classic webm edition

-------

In /rcg/ we discuss anything & everything remote controlled - multirotors, fixed wing, cars, rovers, helis, boats, submarines, battlebots, lawnmowers, etc.

>How do I get started with racing drones?

https://oscarliang.com/mini-quad-racing-guide/

https://www.fpvknowitall.com/ultimate-fpv-shopping-list/

> How to build a racing drone (16 part video series from Joshua Bardwell)

https://www.youtube.com/playlist?list=PLwoDb7WF6c8mWARrcxtX_G6yytK7QFHID

Comment too long. Click here to view the full text.
55 replies and 16 images omitted. Click here to view.
>>
>>1513374
best thing is that they take into account the fucking shipping costs as well. not to mention they prolly sit on their fucking asses as well.

so, for example, I purchased a used Canon A-1 with a 50mm lens from Hong Kong for ~70 euros shipped (a steal basically). It took like a week to arrive to Greece, and then it literary stayed at the customs office for over a fucking month and almost didn't get it in time for the trip I was going to go.

And I literary paid 42 euros in customs fees because fuck you.
>>
>>1513362
>>
>>1513382
What absolute fucking aids.
>>
>>1513381
Never happen, get the fuck out faggot
>>
>>1513030
>R9M module bay
Huh, I didn't know anyone had made spread-spectrum 900MHz radios, cool.
>>1512696
In this case, the only reason to go 2.4 is that they're cheaper, almost everything is already DSMX 2.4, and you use a much smaller antenna. If you don't need to save every single gram of weight and don't mind the extra cost, yeah, absolutely go for the 900MHz radio. There's less interference in that range anyway, these days every single gadget mucks up 2.4 with WiFi signals, but almost nothing sits in 900MHz, basically just some walkie-talkies and a few 90s wireless phones. Interference isn't as lethal with spread-spectrum, but it never hurts to be extra careful.

Hey DIY, I’m a first year (second semester) architecture student and I’m currently starting an instagram account where I post some of the works I have to develop for uni. Most of them conssist of two post, where I upload the creative process + prototypes, and the second where I upload final models with an explanation of the task. Captions are on spanish, but ig itself has a translation option. I thought some of you could be interested in this, account: @aa574t
Critics, ideas, comments are always appreciated
2 replies omitted. Click here to view.
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>>1514462
Oh and also, they are all the tasks for my main course, not only the “good tasks”, so its not like I’m showing myself or anything like that lmao
>>
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>>1514468
>to see my own progress

>Take picture of project using phone
>Show to friends

It should be that simple.
>>
>>1514483
First post is from september and I jjst opened it like 2 days ago? Seems that the one trying too hard is you
>>
>>1514490
Wait what please explain
>>
Guess I’ll just make it private again, sorry if anyone else was into this. Just let this thread die

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Ok guys

Just bought a house. My bathroom faucet, cold only, shoots out brown water only for a second when turned on. Bad pipes or just an old rusty faucet?
9 replies omitted. Click here to view.
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>>1513877
What about PEX as a replacement supply line? Looks easy to diy .
>>
>>1513903
PEX looks doable, I don't know how it is called but what I used looks similar. Mine had several layers with teflon being the inside layer and an aluminium tube layer in the middle.
Easy to bend, easy to connect, allaround easy to DIY
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>>1513911
PEX putting fat ass loser plumbers out of business since 1980
>>
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>>1513903

Just use polypropylene pipes. You'll need the cutting and welding tools for them but that's about it.
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>>1514082
Ackchually, Vegas has a bad pex problem and had to be replumbed. It’s a scary material to co-mingle brands.

Lets say I want to make a range hood for my portable propane stove.
It's all going to be inside a plywood enclosure thing.
I have a 3 inch diameter fan inside one of those ductwork tube things that is going to suck the air out the window.
The problem is I don't want the moisture from what I'm cooking going on the wood and creating mold.

Should I paint the wood with something or use some coating of some kind?
I'm looking for something non toxic and relatively heat resistant.

Flex seal?
7 replies and 2 images omitted. Click here to view.
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>>1513773
>but you have a lot of options on the inside coating
Like what?
I can't get aluminium and cut it.
>>
>>1513773
>seal it with flame safe caulk
You mean like silicone?
Like cover the entire thing with silicone?
>>
Couldn't I just paint it with latex paint and use silicone for the sides?
>>
>>1513503

> Slim Potatohead?
>>
>>1513503
Can you line it with foil? Or bend sheet metal over something a little more flame retardant? Grease fires are crazy

Is silica dust a real hazard or just a meme?
4 replies omitted. Click here to view.
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>>1514069
>Say after this job is done, will the house be contaminated with silica dust?

every house that has drywall looks like that at some point during construction. they vacuum it. lots of it winds up in the filters if the AC or heat has been hooked up. But once you move in it's either gone or it's someplace stable. It's not like plutonium, your body can handle quite a bit without harm. How do you think humans survive dust storms, and sand blowing around in general?
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>>1514090
Okay. Well I was going to run an air scrubber anyways because I’m paranoid.
>>
Dude it's just dust. Don't worry about it.
>>
>>1514042
google silicosis or "miners lung".
Shit that your body can't adsorb will fuck you over in the long run.
>>
>>1514042
Leaf blower out the window

Can wood be permanently magnetised?
7 replies omitted. Click here to view.
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>>1512061
>Can wood be permanently magnetised?
i woodn't think so.
>>
>>1514396
Suck my balsa-ck Carlos, you son of a birch.
>>
>>1514308
I never would have dreamed that a plastic magnet was possible. The world gets stranger every day!
>>
>>1514425
well, im knot going to stick to this line of conversation. time to branch off onto a new topic. woodnt want to stay rooted in mediocrity. too easy to get stumped that way, if you know what i mean.
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>>1514396
Really activates my almonds

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Is Ask This Old House still good or is it just the same stuff you can find anywhere else? thinking about getting the magazine because i have a lot of downtime and preservation is one of my hobbies.
>>
Ask This Old House ≠ This Old House

There is not really that much preservation in This Old House. It's just a general home improvement show/magazine.

21 replies and 4 images omitted. Click here to view.
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>>1513929
They probably have insulating ones underneath
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>>1514021
you good sir read my mind

5/5
>>
>>1513828
You are like a little baby. Watch THIS
https://www.youtube.com/watch?v=Z4zO2gB70ps
>>
>>1514021
The boom is insulating, so the moment they grab the cable they and the box they are standing in become the same voltage as the cable with any real current flowing. Until they are connected there's still sparks because they have a small capacitance to the environment, but the sparks don't carry much energy.

Probably enough to give you RF burns though, so best have conductive gear on. No wearable insulation will stop high voltage, no matter how short the spark, keeping the current outside your body with a conductive shell makes it harmless though.
>>
>>1514464
without any real current flowing


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