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Archived threads in /diy/ - Do It yourself - 94. page
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Hey /diy/, i recently bought a sharpening stone to maintain my knives and i want to know your opinion on the technique. Ive heard contesting opinions on whether to use water, oil, or go dry. Pic related is my stone. I got a 4 dollar SS folder for work purposes. Yes i know SS is an inferior knife material, but i cant seem to get the edge i want. Either its true what they say about SS not holding a fine edge, or its just me being green.
14 replies and 3 images submitted. Click here to view.
If the blade isn't holding an edge, try increasing the angle of the blade in relation to the stone. It may seem counter-intuitive, but on some shoddier metals, it actually work pretty well in some cases.
Some more info: i have a norton crystolon stone, one side coase, one fine. The norton website recommends using oil for lubrication, so unless i can get good contradicting info here, i will be using oil. I used water in my first attempt with mediocre results. Better than the factory edge but with more to be desired
that is a shit tier stone for shovels

get at least 2000 grit+ for knifes

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I'm thinking of buying a bit of land and I want to build a small stone cottage/hut/shed to sleep in when I visit. Nothing too crazy inside; about five by three yards or so with a fireplace and a stove for heat/cooking, no electricity needed, a bed. Illumination would be provided by paraffin lamps and candles, maybe a generator outside if I really wanted electricity.

Now, I've had no experience whatsoever in building anything more than a wooden shed, so any points would be welcome.
66 replies and 13 images submitted. Click here to view.
You could easily lay a foundation and build a wooden structure.
It would be easier and probably cheaper than masonry work.

Do you need a foundation for a stone building?
It would shift with the ground right?
I hope you have stone on the land preferably shale
other wise you will pay out the ass
Kerosene is nasty stuff, especially in an enclosed space. Get an led lamp with a rechargeable battery.

Sup anons

Car won't start. Toyota Avalon 2002. Battery replaced a week ago

When I try to start the car I hear a loud click and then everything turns off won't even try to start. If I wait like 10 min all the lights will turn on but when I go to start it same thing happens

Any help?
18 replies and 1 images submitted. Click here to view.
obtain meter.
check battery.

- it aint rocket science, anon, Whydyi replace old battery?
Sounds like your alternator has shit the bed. Google up how to test one and see how you go.
Prob bad alternator discharged your battery?

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Hey /diy/,

I have never seen a thread about /diy/ related chemistry such as home laboratories, simple experiments, and amateur research.

I was wondering if that is due to either lack of interest or if discussing these things is a violation of the rules. Going to err on the side of caution regarding this until I get some response as to whether or not it's OK to discuss those sorts of things here.
19 replies and 3 images submitted. Click here to view.
Not against the rules, unless you want drugs and explosives.
Lack of interest is largely due to faggy restrictions and general terrorism & druggie paranoia.
Oh, and personal protection and waste management tend to be problems as well.

Three issues:

1.) Difficulty obtaining materials due to legal restrictions
2.) There isn't actually that much use for DIY chemistry. Other than household cleaning supplies and soap, I can't even think of anything off the top of my head that I'd need to do any chemistratin' for. Okay, well, I guess actually I made some copper chloride for etching circuit boards, but, other than that, nada. It's a fairly niche topic.
3.) It's kinda dangerous, depending on what exactly you're...
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Check out this Surface Pro 3/4 leather sleeve case I made :)

Here is the video of the making process:
18 replies and 1 images submitted. Click here to view.
How's your sleep apnea?
Quick question: I have waterproofing she wax that I used to my boots, worked great. Can I use the same wax for my recently purchased leather mitts (Hestra)? Should work fine right?

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Is one brand any better than the other? I know it's kind of a minor point, they're almost always no more than a few bucks, I just don't want to get stuck with some Chinese crap that won't work.

Also looking for solid PCB-holding solutions; I'm considering one of those little cluster fucks with two clips and a magnifying glass but there has to be better stuff out there.

Applications: circuit bending, perhaps some repair work, nothing professional or digital.
11 replies and 1 images submitted. Click here to view.
yes, avoid chinese ones because of inferior purity and oxidised surface and poorer weave pattern... they cant wick
Those plastic things that suck up solder work pretty well and I think they're only 5 or 10 bucks more + they're reusable(?).
As for the holder I know the one you're talking about and it's decent but if you're going to be doing a lot of soldering and want one that's going to last a long time consider dropping the 50-60 dollars on one of the higher end ones.
That small fucker with the magnifying glass is a bit awkward to use, I can't really explain why.
those solder sucker sucks, the solder splatter cools inside making tons of fragments and crap that will drop onto your pcb and everywhere near it, it is a flawed design, it very easily contaminate the working area with solder dusts and crap

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I'm looking to get a kickass turntable this Christmas, which makes this piece of junk obsolete. So, I'm going to completely dismantle it and rebuild it. I'm going to 86 the speakers and make it so I just plug it in via aux. I know the whole player is shitty, i just want to make something interesting looking.
Has it been done before? Can I see some builds?
47 replies and 14 images submitted. Click here to view.
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I'm getting this one, so I think I'd like to aim for a minimalist look.
1) look for a belt driven. If the belt isn't showing, then don't get it

2) look for a thick heavy plate. I mean 1 inch thick at least

3) look for conical shaped under legs

4) you must get an external mono amplifier. Decent ones let you choose the voltage and resistors, according to your turntable cartridge

5) expend some money on a cork mat, for the turntable plate

6) learn how to propetly ground your turntable, otherwise you will listen to hiss sound

7) learn the basics on how to handle your records: https://www.youtube.com/watch?v=L2QfjcgDjsY

8) learn where to get quality records

9) get some high end amplifier

10) get some decent speakrs or headphones

that >>911071 record player sucks, to the trash it goes

this one >>911072 looks decent, but it lacks the thick plate, so I would give it a 5/10

if you hate the inconvenience of doing all this shit, then don't get a record player, get an spotify account and some nice headphones
>I know the whole player is shitty, i just want to make something interesting looking.
Interesting idea, but I'm not sure if I'd even bother to go that far with it. Even with the guts ripped out, these made in China Crosleys are only good for firewood.

Just my opinion, but try checking out a nice turntable from the 70's era. Some of the best built equipment comes from the 70's, early 80's. Not sure who makes a really decent turntable these days. Some research will definitely pay off.

>1) look for a belt driven. If the belt isn't showing, then don't get it
Nothing wrong with direct drive, though.
And a reasonably good belt driven model doesn't necessarily have to have an external belt.

Hello all,

For this scenario, I'd like for all of us to assume a plague that hits worldwide that allows .5% of the population to live. That means 4,200 people in New York City, and 160,000 throughout the whole country. Small cities, like Boulder CO, are left with 50 people.

For everyone to drop within a week or two, what plays out? 4000 people in NYC? What do they do? 50 people in Boulder? What are behaviors like?

Give me your ideas on the first year, and maybe ten years in. Would love to hear your two cents.
18 replies and 3 images submitted. Click here to view.
>not diy
Please keep your IDS HABBEDING fantasies to /k/ and /pol/.
Sorry. I always come to /diy/ when it comes to what I think of as brainy stuff. I agree this is not diy, I just like how your brains work.

FYI this isn;t /k/ either. They just want gun stuff. To pol I go.
I think you have your numbers wrong. There's about 300 million or so fuckers in the US; 0.5% is 1.5 million not 150,000. Let's go with your numbers and assume a plague that leaves 0.05%.

You just read The Stand, didn't you?

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I recently saw a cool method of storing energy by filling balloons underwater with air. When energy was needed the balloons could allow air out and spin some turbine, I suppose.

I'm wondering about storing energy in an end of the world scenario. Batteries would only last so long. I was thinking you could lift weights, and then let them sink.

So, ways to store energy? Trying to think of things that could be built relatively easily and could last for a few generations.
36 replies and 6 images submitted. Click here to view.
pumped hydroelectric
already exist worldwide as kind of capacitors for electricity grid between day and night.
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Find stuff that burns. Then burn it. There's plenty of it around.
Of course. Thanks.
Also good, but I don't want to create smoke.

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I have pic related, a Chrysler P04704383AD car stereo.

I have so far managed to hook it up to an old PSU so it turns on, how would I go about connecting it to a set of speakers?

More realistically, what's a good intro to electronics guide?
11 replies and 4 images submitted. Click here to view.
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Back of it
Hook up rr+ and rr- to a speaker, repeat for the others

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I opened an old PC keyboard and found this IC - 7406N, "hex invertor buffers/drivers with open collector outputs"

Can I do anything useful with this and an Arduino? Seems like I can use it to switch higher current devices.

54 replies and 11 images submitted. Click here to view.
You could like... make a keyboard.
You should start with a bulb and a resistor.
It's outputs are 40mA, same as the arduino's IO pins. You can power it with up to 15v and then have those voltages as outputs, but then you lose the ability to control it with the arduino's 5v logic. All it does is implement the NOT function which you can do in software on the arduino any time you need it.

Do something without the Arduino like a ring oscillator.

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Hello /diy/nasours

I wish to create a bunch of ups systems so that networking equipment can continue to work during a power outage.

All UPS' will have 2 lantern batteries in series to make 12 volts, however not all equipment will work on 12v, eg switches running on 5v.

I plan on using 5v buck regulators to regulate down the voltages of the batteries however I am unsure how I will do this with my (well, "modified") design, because right now I am tempted to make them all 12v systems with regulators just chucked on the output.

I may have...
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13 replies and 1 images submitted. Click here to view.
OP here

Must remind you that the batteries are disposable and are non rechargeable.

Are they safe for use in this circuit?
Why would you waste money on throw away batteries? For less than $20, you can buy small, sealed, maintenence free 12v lead acid batteries...for things like UPS' and alarm systems. You top the charge off once a month with a cheap car charger.

Why would you waste energy bucking voltage from 12v down to 5v? Build a dedicated UPS for 5v stuff. Could use 6v battery of same type I mentioned above. Might not even need to buck it down to 5v, but if you had...
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Cost reduction, the lantern batteries are 3 to 4 quid each.

I can eventually upgrade them to lithium ion cells in the future. A single 18650 cell is the same price as a 6v lantern battery.

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Be honest, how often is your workbench ever clean like this?
87 replies and 29 images submitted. Click here to view.
Workbench too full.
Oscilloscope, drill stand, multimeter and a few random tools resting on my night stand along with misc. components and a shitty PSU that I built a few years ago.

Sine wave generator and Lab PSU are on top of a closet.
Breadboard with a PWM controller is on my computer desk chair along with my netbook.
I'm in bed with my laptop because I've got no room elsewhere, unless I move stuff to the bed.

pls give me more space
why don't you.... do it yourself
Once. When I first put it together (Ok, in reality, not even then).

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Here is a video about how to crack open your own geode.
15 replies and 3 images submitted. Click here to view.
too much work, just throw them at oncoming traffic.
With a masonry blade.


No really,

That is one big-ass geode.

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I'm buying a dual voltage TIG welder 110v/220v.

I'm going to add a single 220v recepticle in the garage. Which amperage breaker and type of wire should I use? I'm getting different feedback from 30 amp to 100 amp and to use 10 gauge or 8 gauge wire. Do I use romex and do they have them in larger than 12 gauge with 2 blacks or 1 red, 1 black plus ground?

I don't want to run conduit around the garage. I want to feed the wire from the breaker box to the other wall.
46 replies and 2 images submitted. Click here to view.
10/2 Romex with ground, double 60 amp breaker.
more distance = fatter wire because there'll be a loss of voltage over the run and you want to minimise that.
old transformer welders dgaf about volt droop, but inverter welders that haven't been designed as 'generator safe' die horribly.

calculate your breaker based on the resistance of a dead short at the far end of your wire run. if a short circuit draws less than the trip current of the breaker all your shit burns down.

I'd strongly suggest you read your country's wiring regulations.
It's going to be less than 30 feet of wiring from the breaker panel to the recepticle

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