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Archived threads in /diy/ - Do It yourself - 74. page
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how strong are shipping containers when they stand verticaly? how unstable would it be if you had two 40ft ones stacked on top of each other? because if it was relatively easy, you could make a super badass tower pretty cheap.
38 replies and 3 images submitted. Click here to view.
>another thread about impractical bullshit pipedreams

>not considered spam and deleted

What is your question queero?
can i build a tower out of two containers without having to reinforce it to shit and it ending up costing more than my house?

File: dremelfuge.jpg (437 KB, 1296x968) Image search: [iqdb] [SauceNao] [Google]
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I want to build a centrifuge for projects and kitchen stuffs, I've got a few options over spending $300-$3,000 on a professional one.

I'm not skilled enough to buy the rotors and circuitry so this is a superficial DIY- buy something that spins like a dremel or blender, and either botch it or in the case of the dremel, create an attachment.
I can do the attachment part myself, some tips and ideas are welcome but my main thing is I have two concerns:

leaving a dremel on for 5 or more hours at 20,000+ rpm, good or bad?

Dremel has less torque than...
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7 replies and 2 images submitted. Click here to view.
400ml of fluid is over half a kilo to spin. With a dremel or the like that means balancing needs to be done properly. Try to figure out an attachment and balance it very well maybe with the cell phone method where you run an app and adjust the rotor accordingly.
Using falcon-sized centrifuge tubes also means the tubes need at least to run at an angle, preferably with a pivoting attachment so that whatever you are centrifuging won't wash out from the bottom when the centrifuge stops.
And with larger tubes the...
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I'm not sure what the cell phone method is but thanks for the info.
I didn't like the 3d printed version because it has no pivot and doesn't allow for the vile to rest, which are both safer and more efficient.

if you could help me out one more time before I hurt myself, I was wondering how a string or chain would fail to balance perfectly, so long as the speed was adjusted slowly enough for it to not wrap around whatever the spindle would be?

in other words, viles A and B were attached...
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Try searching for it. Balancing cell phone app rotation or whatever you know the drill. There is at least one instructable about it.
I got seriusly drunk between posts so I'm trying to follow your train of thought before I forget this thread.
One problem with a string/wire approach might be turbulence or wobbling. The centrifuge tube might wobble during rotation in a way that you can't see/measure it.
I'm not sure if this is an issue but consider it. Wobbling would prolly reduce the effectiveness of the g's you are trying to achieve.
A fixed stand for the vials might eliminate the risk of problems like this. I'm a molecular biologist so I have hands-on experience with these machines but no clue about designing of them.
Off to sleep, fuk I'm fukt.

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hey everyone.

i'm trying to build a communication system based on infrared LED and receptors.

the speed will vary from 480Mb/s to 2.4Gb/s. (480Mhz - 2.4Ghz)

can the system handle those frequencies ?

thank you
34 replies and 5 images submitted. Click here to view.
The IRDA ports from the 90's never caught on because they were so unreliable. They operated at 9600 baud, which is literally millions of times slower than what you're proposing.

Look at the datasheet for the IR phototransistor you want to use. It should have parameters for how quickly it reacts. That will be the maximum bit period possible.
* minimum bit period possible.
>The IRDA ports from the 90's never caught on because they were so unreliable

i understand, but they were unreliable because the transmission was bad.

i beleve fiber optics use the same principle (light) to transmit data. thats what i intend to do.

i just want to know if the regular IR devices available can do the same

Hey /diy/, need some input on what the best way to handle this situation is.

The connection to my car's battery is really spotty.
I've never seen battery terminals like this, and they're rusted so bad that they pop off of the battery leads. Anything I should know before I commit to desperately sawing them off and soldering on a new set?

There's a 3rd small cable coming off of the positive lead too, dunno if that's supposed to be the ground or something unrelated.
12 replies and 2 images submitted. Click here to view.
Hack em off, clean off the corrosion, then just bolt a new pair of terminals on.
They sell bolt on ones everywhere, like walmart and stuff
So its as simple as it sounds then? Alright I'll give it a shot, thanks Anon.
No to the solder. Like the other anon said, they sell bolt on ones(basically what you have) that you can tie every thing back in on. The extra wire coming of the positive is absolutely not a ground. Ground will be the negative. Don't change any of the wiring unless you have to, run it exactly how it is. That other positive wire probably runs to the back of your alternator.

Some of the new cable ends come with spots to clamp down smaller wires, some do not. If the ones you get do not you'll need some...
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File: motor2.png (460 KB, 683x475) Image search: [iqdb] [SauceNao] [Google]
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rc planes, helis, boats, multirotors (quadcopters), cars, hovercrafts, submarines or anything else rc.
57 replies and 11 images submitted. Click here to view.
First for mutha fuckin X5C. I'd post a picture, but its currently stuck on my roof.
for beginners:
can't fly either
I lost the last prop for my 3D nano
broke a motor on my H8 and no spares
my charger broke so no hubsan nor my 250 can fly

File: vodomer.jpg (39 KB, 690x350) Image search: [iqdb] [SauceNao] [Google]
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hi there! i got a question, they just replaced out watermeter and i noticed that there is water in the display itself, its almost full, there is just a tiny air bubble at the top.

is that normal?
6 replies and 1 images submitted. Click here to view.
Yes. Fluid filled gauges are more responsive and accurate.
good, thanks. just curious, even the ones like in the op pic? because i cant seem to find a fluid filled just by simple google search
Its glicerine filled

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

I do metal work with a little wood work but my dream is to run treasure hunts. I've done a few before that ran from one single website but I wan't to create something different, something you have to solve on the move.

I want to do scenarios like kidnapping and people have to follow the clues to find the victim, it'll all be light hearted, but I need ways of getting across clues, the move basic is QR codes, which...
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10 replies and 1 images submitted. Click here to view.
fucking youtube-generation boring-dogshit-larping millennial smartphone-garbage motherfucker.
I dont think I understand you ya cunt?

You wouldn't like to win £50?
I admit the treasure hunt in the Peak District was a lot nicer, but more people could join in with this in a town.

Can I ask what you do for your community?
>I love doing X
>I can't figure out how to do X.
>Internet help I can't do thing.

This piece of shit DLINK DIR-615 keeps overheating and causes the admin panel to freeze for several minutes. I'm planning to throw some raspberry pi heatspreders on it.

What parts of the router do the actual work and need the heatspreaders the most?

>Pic related
18 replies and 3 images submitted. Click here to view.
>turn it on
>see what gets hot
you are a silly guy op

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why are these fucking things so expensive? looking for something to run the odd tool here and there but to get even the minimum for most tools i've looked at the compressors are at least $500

currently looking at pic related but it really seems like a lot for a fucking tank and an electric motor

53 replies and 9 images submitted. Click here to view.
Because you're shopping for the wrong type, that's for a shop setting where you have several tools. Try looking on Amazon for whatever you tool is rated at for a small one. Like 50 bucks.

I'm talking out of my Ass but this is what I've gathered from using pneumatic tools at work and having to turn the compressor on and off. Should be true to a point

For something like an impact wrench at 90psi operating

PORTER-CABLE PCFP02003 3.5-Gallon 135 PSI Pancake Compressor https://www.amazon.com/dp/B00BMUGQNC/ref=cm_sw_r_other_awd_jbMFwb3HSK8YR
i've been told CFM is the most important for most tools. that one is only 2CFM while most impacts i've seen take at least 4 CFM. also other tools like grinders quickly jump up to like 10 CFM and at that point you're getting into $1000 compressors.

maybe i'm just missing something but it seems like these tools take way too much air for what they do.

File: soap.jpg (188 KB, 692x960) Image search: [iqdb] [SauceNao] [Google]
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I'd like to start up a new soap general because I have just recently started back into it. However I am a dumb nigger and don't seem to have soapdad's recipe sheet.

Let's make the opening theme of this one about how to help dumb idiots like me not fuck up.

I have done two batches so far, and I did them both the same way.

I tried to make castille soap. Just olive oil, lye (NaOH), and distilled water. I followed instructions very carefully and used brambleberry's lye calculator.
Additionally, I ensured that the lye water and oil...
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Castille soap takes FOREVER to cure.

It takes two days to set up a proper loaf to cut and should be aged for no less than 6 months. I have a batch of castille soap that has aged 2 years now and is absolutely wonderful.
I realise it's not quite as exciting as making your own soap from oil & lye, but you can pre-made soap bases that you can then just add your fragrances etc. into and pour into a mould.
Well, that explains it. After your prompt I went and did some research and indeed many places warn that Castille soap can take over an entire year to fully cure.

Any suggestions? I'm looking at 60/40 coconut/olive, because I like hard soap. Any way to sort of predict how long an oil will take to saponify and whatnot?

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At one time, there was a thread that listed a bunch of youtube channels that were /diy/ related...

anyone have that list again?
29 replies and 5 images submitted. Click here to view.
No bit two awesome channels I can think off the top of my head are Ave and clickspring. Both are quite entertaining
Along with those two there's also Dave from EEVBlog.
And then there's a little sea of car /diy/ channels. I'd recommend Eric the car guy.
Ignore Scotty Kilmer.
>do it yourself
pick one, since that guy does fuckall but talk

I like these:
Matthias Wandel

Applied Science

File: hover-bike.jpg (93 KB, 640x402) Image search: [iqdb] [SauceNao] [Google]
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So if this already exists, why can't we all come together and create our own version instead of waiting 2 years and paying 80,000 dollars?
15 replies and 4 images submitted. Click here to view.
Because the parts are probably expensive and require greater engineering knowledge to assemble than is available on a diy forum. You aren't going to get a bunch of shit from your local hardwear store and make a hovercraft u nerd lmao
They just aren't efficient enough to be practical. Fuel is heavy, and anything that uses ground effect uses a lot of fuel to stay airborne; physics, unfortunately, works, and in this case it works against you.
Noise pollution.

File: 1444730770113.jpg (671 KB, 2560x1440) Image search: [iqdb] [SauceNao] [Google]
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Hi /diy/. I'm doing a capstone project next year for my last year of mechanical engineering, and I'm having trouble thinking of what to do, so I was wondering if creative minds such as yourselves could throw some ideas out there.

Here's what I know: mechatronics (microcontrollers and whatnot), cars (very well), machining, PID control, and other basic engineering stuff.

Like really I'd like to make something with a humanitarian purpose or could be turned into a business idea, but if you had an idea like that then you'd be doing it yourself haha.
9 replies and 1 images submitted. Click here to view.
remote control vibrating dragon dildos for quadriplegics,
How to read Ms Universe cards for dummies.


An idea generator
An actually affordable assistive exoskeleton using 3d printed parts for people who have limited mobility? (Possibly feeding from a wall plug so they can at least walk around their home, unless battery issue can be solved)

A better voice modulator for throat cancer patients that doesn't make them sound like a dalek? (Not sure if that would fall under your area of expertise)

A portable, but still effective jaws of life system (think small enough it could be tossed into a glovebox or doorwell of every car) to avoid waiting for emergency services in a critical situation (potentially dangerous for untrained, possibly include warnings on casing)

Possibly some form of hydraulic "talon" to be mounted underneath a vehicle in case of brake failure in cold and icy weather? Something that senses when the car is still sliding and goes "fuck, time for plan c"?

Let me know if I'm remotely close to the mark or way off, I'll think of more. Have not done anything with mechatronics and am certainly not by any means an expert.

File: ice rink.jpg (89 KB, 600x450) Image search: [iqdb] [SauceNao] [Google]
ice rink.jpg
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Going to build my first outdoor ice rink this winter (if the northeast will get cold enough).

Any tips on how to build it or ideas to make it super cool?
7 replies and 1 images submitted. Click here to view.
>asking /diy/ for advice on cooling things
Obviously you just need a bucket of ice and a fan.
>thinking that's all there is to an ice rink
Obviously you don't /diy/ much
I know the basics like
>get a wood frame
>get braces to support frame
>line frame with plastic
>fill with water all at once

But outside of that I'll mostly be winging it. Any advice on the small things that'll help keep it quality for longer is much appreciated.

File: Rough-Cut-Sheds-4.jpg (375 KB, 980x735) Image search: [iqdb] [SauceNao] [Google]
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I'm thinking about building a shed that looks something like the pic, but not as complicated (it will be smaller, and only have one floor).

I have never built anything remarkable before, but I do feel capable of building a simple shed like this. I have a few questions though:

1. I want the wood to be of darker type to give that comfy lumber house look. What wood is good for this? I'm talking price and quality here (don't want anything that's going to rot in a year or two).

2. I want the shed to be comfy to hang out in during the winter...
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39 replies and 5 images submitted. Click here to view.
What kind of budget do you have?

Keep in mind that using any type of wood other than pine becomes very expensive, very quickly.

Personally I'd frame it with whatever studs you can find for cheap in the walls, use 2x6 yellow pine for the ceiling and floor joists and insulate the walls/ceiling/floor. R13 insulation in the walls, R19 bare minimum in the floors/ceiling. 2x4 studs costs like 2.50 at Lowes for an 8 footer.

Use something like wood beadboard panelling on the inside, maybe some rough-sawn...
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>What kind of budget do you have?
I am willing to buy raw material for ~$600, perhaps more if I need to buy a door. I am not sure if I will install a window yet.

>Keep in mind that using any type of wood other than pine becomes very expensive, very quickly.
Will keep that in mind.

>go get a solid wooden door and frame it yourself. If you feel super intimidated by that, go spend the 100-ish dollars to go get a regular...
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Same poster, with a little more input.

Since you want to do a wooden door, you might want to get an idea of what kind of door you want.

Solid wooden doors are also pretty expensive, so you could make a wood door out of boards like pic related but it would have near zero insulation value. Plus, framing a door to where it has a decent fit and wouldn't leak air all around it is very difficult unless you're a really competent carpenter.

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