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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:
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!

Residential/Commercial Electrician here, what are some things one needs to know in order to be an industrial electrician? Aside from knowing code for hazardous locations and knowing how to bend and thread pipe, what else are you expected to be proficient in as an industrial electrician?
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I'm also looking at industrial electrical/mechanical and I'm curious about it
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There are only Electricians and helpers.
Electricians have state-issued licenses. Helpers do not have state-issued licenses.
There is no such thing as "apprentice" or "journeyman."
Classes, union membership, certifications, etc all mean nothing compared to time in the field.
is this true? I am a helper now and trying to figure out what my next step should be.
>using a fucking test light in a main switch
also who the fucks puts the main switches in the middle? right under the the I assume are the 24v ac transformers
It super depends whether you're a plant electrician or a contractor. As a plant electrician you will mostly be fixing broken runs and conduit and running new conduit. Also changing lightbulbs 50ft off the ground. Also do remember you're a wire jockey and not a controls engineer.

As a contractor you will be running wire and conduit and getting paid twice as much but never get to see your house that your cheating wife lives in.

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Specifically, you can see the seems before the egg breaks, so it was assembled from individual panels but retained an authentic egg shape.
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So cut it before you break out and reinforce the seams
Do what they did in that movie Under Siege.
Born from an egg on a mountain top
The punkiest monkey that ever popped
He knew every magic trick under the sun
To tease the Gods
And everyone and have some fun!
>How can I make an egg exactly like this that I can break out of?
what part of /diy/ don't you understand?
Paper mashay

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Assuming I live near a water source or have a well, would a coal generator be a good alternative to having to pay an electric bill? Or would I end up paying more than just paying my electric bill?

How would I go about building my own coal steam engine for power? Or are there better alternatives for not having to pay an electric bill?

I live in the woods so theoretically I'm doing the world a favor by feeding the trees free pollution.
22 replies omitted. Click here to view.
>Why would you buy a power plant
OP doesn't want to buy a plant, he'll build his own from scratch and it will be far more cost effective.

If you have lots of wood available running an ICE generator on wood gas might be a reasonable option for an amateur, it's what they did during WWII.
>wood gas
wood gas is an excellent idea. when I get some land, I have lots of gassifier experiments planned.
There were vehicles in WWII that ran on stored wood gas in big bags. I always thought that would be a good setup, run the generatpr when needed and only run the gassifier when convenient.
Coal is more expensive to buy in the quantities you need as an individual and not a coal fired power station or steelworks than oil/diesel/gas is per kWh at least in the UK. Unless you have a rail depot with freight trains unloading coal it's going to cost more. Also a small steam engine without a condenser and multiple expansion stages is going to be inefficient as shit, not to mention a lot of work to keep it running.

You'd be better off buying diesel and running a generator, or just buying grid electricity if you can. Solar is also cheap. Wind makes sense only on huge scales a bit like coal.
You forgot another important aspect. Coal fired steam isn't fill and forget. You'll be shoveling coal all day, to keep it running. It's not like a coal campfire that just bakes for hours, you need specific temps to make a steam engine efficient. That's why they invented screw driven coal feeders from the coal car on steam train engines, because it's more efficient than one or two guys shoveling it in constantly.
That's mostly true, but one small boiler running one small engine wouldn't be as exacting as running a steam locomotive or steamship, where stoking the fire was practically an art form.
David Richards' "old steam powered machine shop" has a wood fired boiler, not a coal one, but that one apparently runs his small engine with only needing a few pieces of wood thrown in it once in a while.
Not unmanageable, but still more effort than anyone would really want to put into getting electricity for the house.

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Are any of you tradie anons being forced to wear the mask at work? What is it like to be that cucked? How do you not pass out from working in the summer heat wearing a face diaper?
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Not a lot of fellas want to do it either, I knew two solid stand up guys that went into teaching and basically left after a year because the female side of the workplace is overwhelming and everyone assumes you're a pedo because you're a man (despite never being accused by the kids!)
They went into adult education and thrived though so at least they found a place in the world which isn't full of domineering bitches
>67% white
I sometimes have to visit sites containing hazardous waste for work, so I'm used to it. I had a bunch of N95s and tyvek suits in my closet when the pandemic started.
>By not being a fat retarded fuck?
>Like genuinely, how frail do you have to be to "pass out" from wearing a mask?
I have been wondering the same this whole time. I have no trouble breathing in a mask and I dont understand why so many people complain of this. Mass hysteria of some sort?
The office tried to get us to wear masks because the owner's wife (who is also the co-owner) is a covid paranoiac. That lasted all of 20 minutes on the job site, though in the warehouse we tried to be courteous to her whims for a few weeks there, partly because aside from being a dipshit she's pretty cool (and hot), and partly because there was an amazon gift card up for grabs for longest consecutive mask wearing (which naturally went to the dumbfuck we all hated). Now she's "vaccinated" so nobody has to wear a mask lol. There's also a $250 bonus for getting vaccinated. When she asks me why I haven't gotten the vaccination, I just say "For all the reasons that there are."

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I have a bamboo cutting board that reeks of cigarettes. any way to get rid of the smell? I tried: bleach, vinegar, dish soap. I fucked up the exterior a bit but the smell remains. I don't smoke, the previous person did.
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Cutting boards are like $5. Just throw that one away in the compost bin to be ground up as mulch and buy a new one.
>second hand chopping board
Reduce. Reuse. Recycle. Are you not aware of the disastrous environmental effect of bamboo farming? Aa single sheet of bamboo requires a quadrillion liters of fresh water to produce, or the equivalent of half a hamburger.
>"Cigarettes" is not what you're smelling. What you are smelling is the sticky tar that a cigarette generates when it burns
these are the types of things you say when you think everyone is as much of a retard as you are

>You can try burning the wood on the surface and burning the tar out.
right before you stick your foot in your mouth and prove that you lack any experience at all with tools
Maybe baking soda, maybe with some water

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Last thread was poorly documented: >>2162180

>I'm new to electronics. Where to get started?
It is an art/science of applying principles to requirements.
Find problem, learn principles, design and verify solution, build, test, post results, repeat.

>Project ideas:

>Don't ask, roll:

>Archive of Popular Electronics magazines (1954-2003):

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You can use a single supply and bias ins and outs to half the postive supply then ac couple them.
Like pic related
>pretty sure you need a variable frequency drive
>Depends on whether the motor is brushed universal or induction.

are you guys retarded?
a vacuum is loud. even <expletive> loud.
induction motors are quiet. like a fan.
did you never notice that? or does the philipina maid handle the cleaning?
so, yes, it's a universal motor with brushes and noise and sparks; just the way we like 'em.

>I have no idea what range i am supposed to want, the motor has no marks

another retard.

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>a vacuum is loud
>induction motors are quiet
Pretty sure it ain't the motor making all that noise, buddy. High-volume air pumps are always loud, regardless of what they’re driven with. Basically the mechanism behind air raid sirens.
Unless you’re implying that they’d only use an induction motor for its quietness in the first place, but the lack of wearing parts and greater simplicity are still valid reasons. The extra weight doesn’t particularly matter. I’ve only opened one vacuum cleaner before and it had a brushed motor in it, then again I only had to open it because the brushes coated the windings with carbon and cooked it to death, so I can certainly see why one might put an induction motor in a vacuum cleaner to avoid parts that wear. Though naturally you can’t too easily put a speed controller on an asynchronous motor, you’d need to have a few seperate windings that you switch about.

Though another thing to consider is the motor’s rotational speed. An induction motor will run somewhere below 50/60Hz, while a brushed AC motor can be wound to run efficiently at much lower or higher speeds. In the case that a high-flow fan can’t be easily engineered to suck the desired quantity and pressure of air at 50/60Hz, a brushed motor may be the only sensible option. Unless you’re into buying $3000 brushless inverter vacuum cleaners.
I've opened a few vacuum cleaners and they've all had brushed universal motors. the speed and torque characteristics of that kind of motor are better than an induction motor for that application.
a regular triac dimmer will work on these, as long as it's rated for the power. Using it as a bench grinder for sharpening knives probably won't pull much power.
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Why stop there? Integrate automatic ph adjustment with chemical pumps.

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Post abominations, bad ideas, fuckups, and stupid projects that are in the /diy/ spirit.

Previous thread: >>2158997
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Masonry should be tied...this isn't. This is cheap chink construction tier
You drop it on a wax ring and then tighten the bolts on either side by reaching around the bowl, finishing with the cap on the bolts.
>because... drugs I guess
Up to the 1940-50's poor people had dirt floors in most places, middle class had wood floors (urban poor too, obviously), but if you were rich you could afford to put cloth on your floor. That was real wealth back then and comfy too. Then the industry of the '50-'60's came and carpet became cheap and affordable, but the association with wealth remained. So the middle class took up carpeting their floors in all of their homes. Shag carpeting became a middle class marketing ploy that leveraged that association
>All your friends have regular carpet, but you can have extra carpet and really flash your cash!
Rich people moved onto marble and tile floors, but middle class moved to shag as a larp of wealth. Then the 80's-90's came and white carpet became the thing, and now wood is making a big comeback.
That is really poorly made.
Stayed at a rental house in the hills around Lake Tahoe. Driveway was super steep asphalt.

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Hey /diy/, first time poster here (mainly lurk other hobby boards). So, I just had to move homes (Covid related) and this new place I'm in is largely great for suiting my needs, but the doors were managed by an insane person. I'm going to have my in-laws over in about a week, and our guest bedroom has a doorframe installed, but no door. I was hoping I could just buy a door and slot it in here? Piece of cake? I've never hung a door before, anything I need to know? I'm worried that if it's not perfectly level, it's either not gonna close properly, or is going to swing open if left ajar... but if the frame is already in there, does that mean I'm good? (provided its level)

I'm hoping I don't have to replace the hinges, as they've been painted over, but I think my power drill could get the job done if need be.

pic relate, the hinge in question. Measured the frame to a standard 80x28.
>how do I google how to hang a door

Any idea for an indoor mosquito trap that work? Please no "yeast based + half cut bootle", I tried and it didn't work. I want something indoor to trap just one or two mosquitoes. I'm not under an invasion but every night, one mosquito slips in my bedroom and ruins me.
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get a bug zapper
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The poison shit works too. Downside, it's fucking poison.
You can have fresh air all right with window screens. If you have no window screens, but instead have completely open windows, and there are water puddles with mosquitos reproducing around your house, there is nothing you can do to keep them from getting in the house and biting you. Only 2 things you can do: mosquito control on your surroundings and window screens.
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Just buy a zapper lamp.
Cheap and effective.

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Been a while lets see if we get anything new
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I see nothing wrong with this
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That doesn't look like 2" brotard.
This is 208v, not 240v. Probably a commercial building instead of residential.

I'd bet some genius added a receptacle and ran a wire to a nearby panel. They probably opened the panel and saw every third space was open and thought they hit the jackpot of easy work. Done in an hour. But it was a three phase delta panel with a 208v high leg. Oops.
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Does it count if it happened at work?
For context the drive shaft should not be contacting the oil pan. It was a complete failure of the spindle due to oil starvation. Shaft actually broke in half between the bearings. 1000+ pounds of 4000 rpm bowl came to a rather rapid stop when that happened.
Here's a stock photo of a clarifier for people who have no idea what I'm talking about.

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Last thread: >>2157799

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

And oops we screwed up and lost all the OP text
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How do I G03 and G02 on a Fanuc Oi-Td lathe?
I tried G02 X## Z## R## but instead rounding it up like the one in the top it does the one at the bottom (the red line is how it should be doing it), I'm missing some parameter?
you know, im looking at them and their pm25 and the specs and capacities are nearly identical (including weight), but for $1000 less. however 2 things are one, it can only do 3000 rpm when the other one can do 5k (dont know if that makes a huge difference when manual milling) and i dont think i like the tilting head, ive heard both ways that its useful for special cuts and for tramming and that its bad for rigidity, and i cant think of a situation where i would need to tilt the head instead of just angling the piece, so i am inclined to avoid it if possible. however, being $1000 cheaper and nearly identical otherwise is very enticing.
correction, the pm can only do 2500 rpm. im sure its possible to make new pulleys to give it ludicrous speed as well but idk if the bearings and such would be able to handle it and id hate to wreck my brand new mahine.
Why do you need more than 2500rpm for manual machnining?
i dont know, thats why im asking.

I’m trying to switch directions of a 1.3A three phase motor, so I’ve been looking for a 2NO+2NC contactor. Is there a difference between a “normcontactor” and a “contactor” that would make it unsuitable? I’ve been having a hard time finding normal contactors with enough connectors.
This is the way to go if you want to switch directions.

You need 2 contactors anyway, so just do it the right way.

Just keep in mind to prevent that both can be activated at the same time.
>pic related has 3 NO and 1 NC and is perfect for this application.

The NC contact can be used to prevent that both contactors are on at the same time.
Just buy a little drive. Plus then you get speed control.
this, two contactors plus and motor protection cost the same as a small inverter

Can someone explain to me why extension leads need two core cables? Why couldn't they just run a single copper wire for the live and then have a short cable for the neutral with a stake so that you can earth it into the ground? That way the reel cable would be much thinner, and therefore could be longer
4 replies omitted. Click here to view.
You need to put in like 6 ground rods and tie them together and keep them wet
so basically your idea is to eliminate the thin copper wire inside the cord and add several 10' copper rods that you have to pound into the earth every time you want to use it
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Homeowners would plug it in to the wall then grasp the earthing rod while stood in a puddle because they're too dim to understand electrical safety
Welcome to /diy, where overcomplicated solutions are the chef's kiss.
Why not just get all your power wirelessly?

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Smol Hands edition.
Old thread: >>2170355
All the info you need about 3D-printing: https://pastebin.com/AKqpcyN5

>Your print failed? Go to:

If that doesn't help you solve your print problems, please post:
>A picture of the failed part
>Printer make & model
>Filament type/brand
>Slicer & slicer settings

>What printer should I buy? [Last updated 12-8-2020]
Under 250 USD: Creality Ender 3 (Pro), Anycubic Mega S

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Printing whistles for the lols
Glue them inside peoples exhaust pipe
looking pretty good, dual extruder?
Single, i change filament every hour or so.
They'd just melt off.

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