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Archived threads in /diy/ - Do It yourself - 47. page
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I live in the American Southeast, where red clay soils make up most of the soil in the area. Wikipedia says the red color comes from a natural abundance of iron oxide within the soil. Could I realistically find concentrations of iron ore around here? Has anyone here ever into prospecting?
10 replies and 2 images submitted. Click here to view.
i doubt you will find any significant amount, but on primitive technology he took similar looking clay and was able to smelt and forge a little iron
Thanks. I'll definitely take a closer look at that.
Look for this stuff https://en.wikipedia.org/wiki/Bog_iron

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Got water damage in my laptop, bought a new motherboard, because I switched it on to soon. Now I disassembled the laptop and found corrosion and a burn mark on the video card(see pic). What should I do? Clean it with isoprop? Are nylon brushes ESD save or should I use horsehair?
7 replies and 2 images submitted. Click here to view.
I'd give 85% it's fucked up beyond repair
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The video card is toast. Sorry bud. Look at the chip (CH) just north of the burn. It's discolored. Most likely from the chip annealing due to heat from a failure.

Now some systems can run without a dedicated video card. Mainly those with i3-5-7, if you assemble without the card it may work. However assembling with the card is a 99% chance of breaking the new Motherboard.
If there is a burn mark on any contact NEVER PLUG IT IN!
post a proper picture, if you cant even take a picture then you dont deserve any help

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Found a water cooker (solis 585) with many temperature and time regulating options. Its not turning on (no led or LCD). I was sondering what would be the most likely part that is ging to break. Any ideas?

Pics related
9 replies and 2 images submitted. Click here to view.
Maybe this 24V thing, dunno how to test it got a multimeter though
why in fuck does a watercooker need an LCD?
cuz current year

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I have been gifted a 1996 Yamaha Waveventure 1100 from a family member. It has been sitting, uncovered, for 10 years in a field. It was winterized before it sat, I am told. Upon a visual inspection, nothing seemed off, although I have not bothered to turn the engine over yet.

Family member says it SHOULD run if I put a new battery in it. I want it to run, and I hope it does, but what process should I take to insure success and reliability for the future to come?

I do have experience with 2-stroke engines, but not much and nothing over 50cc scooter engines.

Pic Related
8 replies and 1 images submitted. Click here to view.
If you can, find a manual of the internals. Then change the battery and see if it runs. If it doesn't, take it apart and clean everything and fix loose wires, etc. If it still doesn't run, try and troubleshoot the individual components.

I have no experience with waverunners, but this is my go-to solution for fixing anything I don't have experience with.
Drain the tank obviously.
If it was winterized it should have been.

Throw some fresh premix in it, jumper cables and see if it starts. If you want to be anal pull the coil wires and crank it for for awhile. 5 second bursts, one minute.
If that is pic related a re grease on the trailer wheel bearings is in order after sitting there for a decade.

>pull the coil wires

I'd just pull the plugs out and ground the spark plug leads so they are not running into an open circuit. Probably good to get some fresh fuel and oil through the thing as the old 2 stroke oil leftovers will have gone thick. Drop a little fuel oil mix down the plug holes and let...
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hey /diy/, I think i know what i want to do with my life

I wanna be that old guy who can fix anything and build anything in his shop in his garage. Mostly carpentry and woodworking stuff I'm interested. I also wanna go to Antarctica as a carpenter. It's legit, watch Antarctica: A Year on Ice and the Encounters at the End of the World. There's carpentry jobs there.

anyway, I'm young as shit and only decided this recently. Hopefully I can get into this carpentry class I'm trying to take. Any advice to learn more and further a career...
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10 replies and 1 images submitted. Click here to view.
Practice, practice, practice. Find small projects to do to familiarize yourself with tools and materials. Make a box, make a simple stool. Classes are great- I hope you get into that one, too.

Thanks. I really like this board, didnt know there was anything good left on 4chan
The problem is that you need years of experience and training in different fields.
I can run a CNC router, rebuild an engine without a manual, build an a frame house on my own- but that took decades of bouncing from one job to another (whenever I got bored or mastered what I did there).

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I have a Crimson Trace LG-431 laser. I'd like to install a small forward facing white-light LED in addition to the laser. It seems that this is possible using the same pressure switch, battery and driver used for the laser/photodiode.

Right now, it seems plausible that I could install the LED in series or parallel with the laser diode, if the operating voltages are similar enough to get reliable operation.

However, I have poor intuition about such matters, and I understand that even minor and transiently exceeding the voltage and current limitations of diodes...
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6 replies and 2 images submitted. Click here to view.
Crimson Trace LG-431:
Manufacturer Recommended:
1x 1/3N Lithium (3V, 11.6x10.8mm)
Or 2x 357 (SR44) Silver Oxide Battery (3V total, 11.6x5.4mm)
Possible alternatives to alter available voltage:
SR54: 11.6x3.1, 1.55V (4.65V Max)
SR55: 11.6x2.1, 1.55V (7.75V Max)
365/366,S16,608: 11.6x1.65, 1.55v (9.3V Max)

The sky is the limit for available voltage, but the device components have voltage and current limits.

Output: ~5mW
Wavelength: ~650nM
Operating Voltage: Unknown, need to check.
Constant Voltage Driver: Unknown,...
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LEDs usually are fed from a current source since they operate roughly at constant voltage over a wide range of currents. The color of the LED is proportional to the voltage drop; higher energy photons (blue, and "white" [which are actually just blue LEDs with a phosphor that absorbs blue and phosphoresces yellow] LEDs) means higher voltage drop than low energy (red LEDs). So if you just stick one in parallel, unless it's exactly the same type of LED as the laser (which it won't be) only one of them will light up, the one with the lower voltage drop, as all...
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Thanks for the reply. The board does have a potentiometer, which I think may allow me to increase the amount of current available after adding the LED, if that won't fry something else.

But that does still leave the problem of the mismatched voltage drops. It seems that laser diodes often have a voltage drop of ~1.5-2V. The only LEDs that operate with a similar voltage drop are non-high intensity red (~1.7V) and maybe high-efficiency, low-current, high intensity red (~1.9V).

On the upside the operating...
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So I broke a lot in my cars engine a couple months ago. Long story short, the camshafts have a lot of wear, my pistons are chipped, and valves are broken. I have 2 camshafts, and 6 pistons, and was looking to make something cool. I was thinking a lamp with the pistons as feet, and the cams as the shaft. Any ideas?
28 replies and 8 images submitted. Click here to view.
How are you planning on running the wires?
That's the part I just cant work out. The shafts aren't hollow, so possibly just wrapping it around or something.
>That's the part I just cant work out.
You have two camshafts - one hot and one neutral.

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I found this today. There are three options:

1. Salvage the metalwork and trash the rest.
2. Redo the inside, clean it up and use it.
3. Use it in one of my photoshoots (risk ruining it)
4. Sell it.

What would you do? More pics incoming.
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It has some really cool details.
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I can't figure out how old it is or if would be worth anything. Is there still a market for trunks? I've seen them go from $80-$300.
Im looking for an old steamer like this one. Are you in the US south east?

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>Tfw your wife puts the end-grain cotton board in the dishwasher

Somehow it's still okay
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Cutting board.

>not beating your wife
I don't recommend DIYing that, because if you fuck up, your insurance will tell you to piss off. Hire a professional so you don't have to worry.

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I am trying to do some crafts with epoxy, but I'm not finding any help for my specific project; it's got some unique criteria. I also don't know the difference between epoxy's.

I need an epoxy that can cast in thick globs relatively quickly, so my assuming is that I can add more catalyst than needed.
lets assume that I don't care about cracking, can this be done with any epoxy or is there a certain kind I should use?
It doesn't need to be crystal clear
17 replies and 3 images submitted. Click here to view.
Need more info.
More catalyst will cause faster curing, but also more heat. You can easily melt plastic that you're using fr a mold.
It's okay if there's extra heat, the cast isn't for aesthetics but it does need to be clear.

I'll try to make a metal mold if plastic will melt, that's good to know.

but can it cure in a sealed container, maybe with only a few holes in it or is exposure important?

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I need help building a pyrography tool from a pc power supply. basically i need to control the 5v 20A output. Is this possible?
14 replies and 3 images submitted. Click here to view.
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I don't have experience with making a pyro-pen, but you want to look at the specifications and make sure pic related is satisfied

also, unless you already have a PSU, you'd be better off buying a lab power supply, because PC power supplies require you to 'turn on' the power supply using a jumper on the ATX pins
Yep already have the psu (it was free) and it has a maximum of 30A output on the +5v line so 20A should be fine, the main problem im having is how to control the voltage so i can make it output 0-5V but have that controller handle the 20 amps
All you really need is a dual pole switch to switch the ac live and ground the PSU's on pin.

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Who farmer here?

I'm growing tobacco for the first time. It's exciting.
9 replies and 2 images submitted. Click here to view.
Tobacco is shit to grow. You'll probably fuck it up anyway
You got the climate to grow it?
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Do honeybees count as livestock here?

Pic related, it's my babies in their homemade hives.

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I have a slate kitchen floor, and it's had 30 years of neglect. Chemicals aren't touching it, and I need something more but don't want to damage it.

I used a wire brush and it worked marvels, but its a lot lighter in color and the tile sort of turned chalky.

Can I just do this on the whole floor, and reseal it with an oil or acrylic or am I going to do more harm than good?
10 replies and 1 images submitted. Click here to view.
you took a wire brush to slate because you're too stupid to buy a proper cleaning product?

masonry is polished after manufacturing prior to packaging.

you just removed the polished and opened the surface on a porous material. now your disgustion pig hoof sweat are going to stain them. good job.
OP here. I bought a commercial stripper. There's years of some 'wax' thrown on for a sheen and was never removed. Lots of embedded dirt and grime that. The commercial stuff just couldn't touch.

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Everyone knows it's a godforsaken pain to try and change a laptop GPU (if not impossible).
But for fun and knowledge how hard is it exactly?

I guess this is a soldering thread
7 replies and 2 images submitted. Click here to view.
For the record, no I'm not attempting to do it I just want to know what /diy thinks.
it will be a reflowing job, so it will depend on your oven and your skills, but unless you already have such equipments i.e. oven, solder, etc, and have experience in reflowing it is often not worth it because it will be almost impossible for a first timer diy to not fuck up.
forgot to mention, you need special solder balls specific for reflowing, which is another thing you have to buy, again, its a huge pain to set up correctly, unless u are pro, or you are just doing for fun and dont mind fuck it up, it is not worth the hassle and risk

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pls help me anon youre my only hope
You're using foreach incorrectly, and you appear to have a typo. Rewrite line 9 to this:

for (String s : sport.values ()) {

Note the difference between local field sports and class field sport.
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>gives you a hint asking if you named ArrayList 'spoits'
>you called it 'sport'

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I need the lid of this trash can to be able to rotate fairly easily, as if it had bearings. Can you help to come up with a simple and hopefully cheap way to achieve this?
15 replies and 4 images submitted. Click here to view.
get some actual bearings and then put them along the edge
A bearing.
Alternatively some sort of grease.
Also alternatively two rings of some low friction material like Teflon, but I guess that's basically a bearing anyway.
get an R2D2 and transfer the insides to the trash can so you can rotate its head while you rotate the can

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I want to wire up a UHF radio (car unit) for home use. I can get a generic plug in the wall adaptor that will output the voltage I need for like <$5 on ebay (pictured). I know I need 12 volts, but my question is about amps.
The unit has a 3 amp fuse, so that means I want less than 3 amps doesn't it? Because 3 amps will blow the fuse? So I should be looking for a 12V, 2A adapter shouldn't I?
7 replies and 1 images submitted. Click here to view.
what happens, if your radio needs to draw 2.5A to operate, but your power supply is only rated at 2A?
>inb4 probably nothing
your power supply will get warm, overheat, and (eventually) die. Your radio is fused at 3A becuase thats how much it needs - the 3A is the lowest-rated fuse at which it will operate before a problem (eg short-circuit) means it will attempt to draw more than 3A, and the fuse will blow, protecting the Unit.

So, having said all that, what you need is same or higher power supply, eg, 3A or more, less is bad. More...
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Neato, thanks.

However it does say in the manual
"Over current protection - 2 Amp fuse"

Which I thought was odd that it would say 2 Amp FUSE rather than just 2 Amp, since it has a 3A fuse.
it wont draw more current than it needs. if it needs 3 amps, get 3 or more.

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My fucking washing machine doesn't get hot water only at 40 degrees. It works perfectly at 60 and 90 degrees. Any ideas?
34 replies and 6 images submitted. Click here to view.

wait, what? I suggest going to /b/ we dont like troll threads on /diy/
Well, I'm not a troll man. Sorry if it's wrong board
thermostat is fucked or miscalibrated obviously

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hello /diy/
i need some help , i need to clean a knife for a client (i clean and sharpen knifes for extra cash) but there's some stains that are impossible to get off , i tried everything, but i can't get them off

image related
10 replies and 3 images submitted. Click here to view.
sorry for the bad quality
citric acid in warm water, soak blade in it for 12 hours
Rust. Chemical etcher will preferentially attack the rust. Rinse well and nuetralize

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so a couple weeks ago my families smart tv died, attempted a fix with a new logic board but that didn't fix anything, so it's now trash. dad says he won't be able to afford a new one for a couple months, so i suggested just getting a regular flat screen tv with a raspberry pi hooked to it. but i have a few questions first.
>is android a good enough operating system for this purpose?
>will a wireless mouse be enough to navigate in android, or will i need one of those wireless keyboard/mouse combos?
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8 replies and 1 images submitted. Click here to view.
what functions are/were you actually using on the Smart TV?
If its mainly HTPC, Pi and OSMC maybe an idea - https://osmc.tv/about/ - Linux tho, not Android.
If you were using it more for browsing, email and stuff, maybe better just using a PC + VGA monitor (+ buy TV-in box) as a temp solution
- time you buy all the bits for a Pi and a new dumb monitor (+ wireless keyboard, def need if email, etc.)- gonna cost you as much as new 'Smart TV' will anyway.
basically we just used it for netflix, youtube and streaming music. android has apps for all of those, but is there a better os for all of them. my dad also thinks that browsing the internet on his tv would be cool.
also, since it was a 32in tv, and my dad wants to go bigger, using a computer monitor or an old crt obviously wouldn't work.
For US$60 you can get an Android 5 or 6 box that will do everything you want including run Kodi.

I'd rather buy a dumb TV and use an external (replaceable) Kodi box than pay for a locked down Smart tv

Old safe I'd left long ago at my parents place went back to get it forgot it ran on battery and now it's dead. I've done some searching around for anything to point me in the right direction to no avail, shy of taking it to a locksmith I've no idea how to open it. There's no keys to it visible or screws I can take out. There's nothing in the safe, I just want to make use of it again.

tldr; safe with dead battery need open

best image I could find, model on the right.
7 replies and 1 images submitted. Click here to view.
cool story
These usually have a socket where you can plug in a power supply to reactivate the keypad.
Google/youtube for defcon safe cracking and some shit like that. They covered some exploits for a few of these safes.

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I'm trying to make a binural mic with 2 condenser mics and a headphone cord, but I have no prior experience with wiring. A quick "this goes with this" would be much appreciated.

Apologies for the stupid question.
7 replies and 4 images submitted. Click here to view.
Does your recording hardware even let you record in stereo by like that? If you wire two mics to a regular PC microphone input like that it's still going to record in mono.
I'll be using a DR-05 so it should be fine. This guy made his with WM-61A's.

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Im following this instructable http://www.instructables.com/id/3-Emergency-Solar-Radio/?ALLSTEPS to make my own solar radio, and im trying to use some laptop internal speakers i salvaged and trying to wire them to a 3.5 mm headphone jack but its not working, what should i do? pic looks alot like mine (i salvaged mine from a lenovo x220 tablet)
7 replies and 2 images submitted. Click here to view.
The output of a headphone jack can only power the very small speakers found in headphones.
Strange since it works when I attach the wires to this.
Then you fucked something up.

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Hey /diy/, I'm building a potato cannon tomorrow and I was wondering in my state of highness if pic related would be possible with a piezoelectric igniter. Essentially the sparking units (bolts threaded into the pipe with a ~2mm gap at the ends) being wired in parallel. I apologize for my snapchat drawing skills.
11 replies and 3 images submitted. Click here to view.
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Or would wiring the sparkers in a series be better/even possible? Would multiple gaps cause the circuit to not work?
A piezo igniter generates a spark that can jump [some distance], and the total distance it has to jump (over as many gaps as you want) has to be equal or less than that amount.

If you wired them in series and the total distance was small enough, it would jump all of them.
If you wired several spark gaps in parallel, then it would just jump at the smallest one and the others wouldn't do anything.

Most piezos I've seen only jumped like 1/16 of an inch. And really there is probably no benefit...
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>there is probably no benefit in using multiple spark gaps
Yep. It's a potato cannon, OP, don't overthink it. And things that make sense when you're high don't always translate back to reality.

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I just had a baby and my cat was being a fucking asshole about it so we decided he lives outside now. He's gotten used to the great outdoors even though he doesn't leave the porch most of the time. Winter is coming up and I want to build him a little box home so he has a place to keep warm and stay out of the elements when winter hits. I don't care too much about how it looks and I want to do it fails cheaply. I'm not a complete idiot when it comes to wood working, but I currently only have a miter saw for cutting and a drill or hammer for fastening. How...
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54 replies and 8 images submitted. Click here to view.
Fairly** not fails.
Oh, and bonus points for it being slightly elevated with a tiny staircase because I'm a faggot and I love this little fucker.
If you loved the little fucker. He would be inside where hes not going to wander into the street and get hit by a car, or where an owl is gonna come by an scoop him up and drop him to his death from 100 feet up, or when coyotes are gonna pluck his fur out whilist still alive but mangled and feast on his dying bones.

But ya know, build him ur stupid box, because it's only there to make you feel better about your own decision. Nothing more.

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I'm digging a drainage ditch around a cabin that has a BIG hill STEEPLY sloping towards it on one side, and believe it or not, there's a mold problem on the side closest to the hill. So I'm trying to get the crawlspace dried out.

I've already got a ~20" wide and ~12" inch deep ditch dug between the cabin and the hillside, which drains to lower ground. And it works: it fills up with water when it rains hard, that's water that was going into the crawlspace before I dug it.

Now, am I supposed to put a pipe and gravel in the bottom...
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7 replies and 2 images submitted. Click here to view.
>Now, am I supposed to put a pipe and gravel in the bottom of it and cover it back up with dirt?

The gravel should encompass the drain tile (pipe). It should cover the pipe on all sides. There are fabric sleeves that wrap perfectly around the drain tile. Just tie a knot on each end. I'd go at least a foot above the drain tile with more gravel, followed by landscape fabric and then dirt.

>But are there any actual advantages to having a pipe and gravel and all that in it? This is a cabin in the woods so having...
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I'm worried that the fabric would clog up much sooner than I'd want it to, the soil where this cabin is at is bizarre, it's super sandy fertile black shit that becomes impentrable muck during heavy rain. So i'm torn between doing this pipe and gravel stuff and worrying about it getting clogged, or just leaving the ditch open and cleaning the junk out every so often.

But I obviously want to do whichever way is more effective for the job of diverting water, so you think that the open trench...
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>so you think that the open trench functions just as well as it would with a pipe and gravel? As long as I keep it clean

Yes, an open trench will divert the water just as well as the pipe/gravel. The pipe/gravel is best when you are going to cover up the area with dirt/grass etc as it is much easier for the water to flow through than dirt alone. Since you're not going to have a lawn or landscaping over this area, an open trench would work just fine.

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I have an aluminium plaque that I need to clear the oxidation and paint from. The paint is corrosion resistant. So far we've tried white spirits, nail polish remover, and some regular paint/varnish stripper. White spirits did nothing, the nail polish remover seemed to soften the paint but it's not very good. We're currently in the process of trying the stripper, but it doesn't seem to help much either. Has anyone got any recommendations for a)stripping the paint from the nooks and crannies of the etching on the front, and b)removing the aluminium oxide buildup?
18 replies and 1 images submitted. Click here to view.
Sandblast it
We don't have easy access to one. Is there any other method?
Citric acid will, but it will take a long, long soak in anything other than concentrated citric. MEK will also clear it, but it may fuck up your piece too, so I wouldn't use that.

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I recently won a Siemens Simatic S7-1200 PLC with software license in a SkillsUSA competition. I'm learning to do PLC programming as part of my degree, but I'm at a loss as to what I should do with this thing. I was thinking about putting a switch panel in my car to control various functions, but this PLC needs a 24v supply and my car battery is 12v. Is there any way around that?
I've also been thinking of an automated bong system, but I'm not sure if it would be viable. Any other ideas for a project I could use this in?
23 replies and 5 images submitted. Click here to view.
gardening automations?
>this PLC needs a 24v supply and my car battery is 12v. Is there any way around that?
ever heard of a transformer?

AWWWW YEEAAHHHH. State champion, nationals second place, and I competed on the WorldSkills USA team.

Good choice, m80. I just hope your industry doesn't die as soon as you win medals like mine did

File: Cannon design.png (28 KB, 1253x837) Image search: [iqdb] [SauceNao] [Google]
Cannon design.png
28 KB,
I've just made a batch of guncotton with potassium nitrate and sulphuric acid, and now I need a cannon to fire it out of.

I usually work in theoretical Physics, so my practical engineering skills are lacking - how should I go about making my cannon?

The main thing I am not confident about is how the touchhole/priming of a makeshift cannon is usually done.
23 replies and 2 images submitted. Click here to view.
Pretty sure they use a drill, anon, maybe an end mill. But if your main concern is how to make the touchhole and not "how do I keep from blowing my ass into 5.23x10^11 pieces," you may want to think about the whole scheme a little bit more.

I think its safe.

Firstly, guncotton is very weak and the cannon is very small.

Secondly, I'll obviously duck behind a hillock or something before it goes off.

The risk to me is minimal - its just it would be annoying if the cannon broke
>guncotton is very weak

File: dda.jpg (374 KB, 1280x768) Image search: [iqdb] [SauceNao] [Google]
374 KB,
So, guys, im in the middle of swapping my cars engine and i do not know how to connect alternator and starter. I've got engine wiring which is quite a bit cut - most of plugs are gone but i managed to figure out whats what. Now, the engine is 1.8 K-Series rover engine, no vvc or turbo. There are 4 wires left - brown-violet (x2) brown-yellow(which i presume is control light on dashboard for alternator) and white-brown. Any mechanics could help?
8 replies and 1 images submitted. Click here to view.
tro /o/
did you try turning it on and off again
Rib oh yeah

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