2016/06/28: We're halfway there! 2016/06/15: We've run out of space for images and need to upgrade our storage. Warosu is looking for a sponsor to support this effort. Email "haha at warosu" if interested.
do i have time or should i just drop the whole thing
>>1115252FEAdone in 2 seconds.
>>1115252I would say it is c)
Truss bridges are simple as fuck. I literally made mine the night before strength testing and it was somehow three times as strong as the next strongest design in the class. Of course, I learned nothing from the experience and my continued misplaced laziness and smugness meant that I dropped out not long afterwards.TLDR do your fucking projects and study properly you lazy shit
After looking at the sticky, I'm surprised this isn't a thing: "No homework threads". Although, this thread is already covered in the hints and, as another anon pointed out, there's insufficient data. The only recommendation I can give is to shove the pieces up your butt.
>>1115255im planning on going with the warren design as it looks easiest. im going to have to design the whole thing on google sketchup and write a paper with the calculations for the estimated forces (i hope to carry about 20 kg = 44 pounds at the center of the bridge), then i have to build the actual thing with sticks of balsa wood and woodglue
Hey /diy/, i know it's going to look like the shilliest post you've ever seen, but i'm not advertising anything, i just wanted to share this cool DIY website wich has a lot of great ideas for decor, crafts, etc. and a nice little community toi. You should check it out, especially if you're looking for a good decoration Idea.
Hey so this mechanisem is suoppse to close the door but it doesnt work anymore how do i fix it????
Unless it quit working because you changed the position of the arm, you can't 'fix' it.It's a sealed unit with springs and fluids.When it dies it's time to replace it.
Didnt change it... are you sure it cant be fixed???
If you didn't make any adjustments there is nothing to fix.It's a hydraulic cylinder with a return spring.The working 'fluid' is usually air.The piston is moved against the spring when opening the door.The spring pushes the piston back closing the door.There are ports and valves controlling the air flow within the cylinder.It may have a stripped gear or broken spring but where do you buy parts?
Hello DIY,First time poster here. I recently inherited a used Karcher Pressure Cleaner. I have the basic attachments and the cleaner is all in good working order. I've seen Karcher supply both generic "cleaner" and "car shampoo" branded under their names. It's probably a long shot, but why can't you run a non-branded cleaner chemical in your pressure cleaner over what the manufacturer sells?
>>1115141Read any thermo/fluids book. Chemicals that are physically similar can have completely different properties especially when used in a specific system. That being said nothing disastrous would probably happen, reduced velocity from being too viscous from the nozzle. It could also corrode parts that weren't meant to take certain chemicals. The engineers who made the thing are probably smarter than you. tl;dr saving a few dollars and ruining your hundred dollar machine is not worth.
>>1115164Yeah, I was thinking of perhaps trying this on a junk pressure cleaner first to measure the life span.Probably not worth as you've said.
>>1115141Who says you can't? I have a K2.xx series Kaercher. Its the regular household one that breaks all tge time and is impossible to find spares for.Both the low and high pressure detergent systems are downstream of the pump and work using a Venturi principle. The high pressure one is just a short extension/lance/wand with a bottle underneath.It attaches to the gun and you can control the mixture of detergent/water and the fan spread.The low pressure one is a clear tube on the pressure washer that sucks up soap from any soap bottle. You have to remove the extention/lance/wand to use it.
>>1115189My chemicals have to go into a tank that integrates into the whole pressure cleaner, I imagine it injects straight into the pumping system. Not as an attachment.However, as you've said I could put an external tank where water and said chemical can be mixed outside of the pump.Just for clarity and so other Anon's know my model is the k2 180. in pic related.
>>1115194I'm not sure how the ones with a tank work. I know the Industrial HDS models have tanks. But I've never seen one. All the ones I've seen have a clear plastic tube as an inlet and no tank inside the washer itself. Even with a tank, detergent might still be injected downstream of the pump though, for reasons of simplicity.This is because detergents are sometimes oily, like radiator coolant.Oil doesn't compress like water does, and it may put too much stresses on the pump.Regular detergent will also gum up internals of the pump unless you run clear water afterwards.Designing a detergent that; cleans well, compresses like water, and leaves no harmful residue costs a lot of money. Not likely from a company that basically makes disposable pressure washers.If it were me, I'd use a non Kaercher detergent without worry.
So I've just moved in to a place without any type of curtain. In the morning the sunshine comes straight to my room without any kind of filter.I was thinking of the cheapest way to put some curtains there, nothing too fancy. Are hook and loop fasteners the best idea?
>>1115132Thumb tack sheet over window. Done.
>>1115174>If you are renting, the landlord legally has to provide them.No matter how highly you value yourself, your local codes don't necessarily apply to the rest of the world.
>>1115574Hey buddy, this might be a message board about Cambodian basket weaving but it's still an AMERICAN Cambodian basket weaving message board.
>>1115578I live in AmericaI rent property to families.I put up mini-blinds in all of my propertiesThere is no code telling me I have to provide curtains.
>>1115174And in Indiana, the landlord is under no legal obligation to provide them. They local ones require them, but they make you provide them.
last >>1102621pastebin.com/9UgLjyND>I'm new to electronics, where do I get started?There are several good books and YouTube channels that are commonly recommended for beginners and those wanting to learn more, many with advanced techniques. The best way to get involved in electronics is just to make stuff. Don't be afraid to get your hands dirty.>What books are there?Beginner:Getting Started in Electronics Forrest Mims IIIMake: Electronics Charles PlattHow to Diagnose and Fix Everything Electronic Michael Jay GreierIntermediate:All New Electronics Self-Teaching Guide: Kybett, BoysenPractical Electronics for Inventors: Paul Scherz and Simon MonkAdvanced:The Art of Electronics by Paul Horowitz>What YouTube channels are there?https://www.youtube.com/user/mjlortonhttps://www.youtube.com/user/paceworldwidehttps://www.youtube.com/user/eevbloghttps://www.youtube.com/user/EcProjectshttps://www.youtube.com/user/greatscottlabhttps://www.youtube.com/user/mikeselectricstuffhttps://www.youtube.com/user/AfroTechModshttps://www.youtube.com/user/Photonvidshttps://www.youtube.com/user/sdgelectronicshttps://www.youtube.com/user/TheSignalPathBlog>What websites feature electronics projects or ideas?http://adafruit.comhttp://instructables.com/tag/type-id/category-technology/http://makezine.com/category/electronics/>Where do I get components and lab equipment from?digikey.comjameco.comsparkfun.comramseyelectronics.comallelectronics.comfuturlec.comladyada.net/library/procure/hobbyist.htmlmouser.comalliedelec.comnewark.comebay.com>What circuit sim software do you use?This mostly comes down to personal preference. These are the most common ones though:NI MultisimLTSpiceCircuitLabiCircuit for Macs>What software should I use to layout boards?Circuit WizardExpressPCBEAGLEKiCad
>>1115406Top: Dremel VersaTipMiddle: Goot KS-30RBottom: Soldron 25WI use the middle one. The "genuine made in japan weeb iron"
>>1115521If the power supply is a constant current supply then it will need to output double the current required by one led to power two. If its set to output double the current and you disconnect one led the other led will get double the current and will be sadIf one of the leds breaks then it has essential taken itself out of the circuit and so the other led will still be sad. You see that running parallel led on a constant current supply can be tricky.A constant current supply is only constant current because it varies it's own voltage to keep the current where it needs to be. You can put as many leds as you want in series as long as the total voltage doesn't exceed the maximum voltage the driver can produce. You can put chains in parallel but then if any single led breaks then that leg of the series circuit will probably go open circuit and the entire current will pass through half of the leds and they will be sad again. Thevenin did a pretty good job of explaining voltage and currents in series and parallel so google him of you want to learn.
>>1115521There are variations between individual LEDs and LED assemblies. If you attempt to connect them in series or parallel they may not operate as designed.When LEDs used in home wiring most electricians call the power supply a 'ballast' This is because fluorescent fixtures use a ballast for the same purpose - to limit current.(the ballast has other functions but let's not get sidetracked)The 'power supply' for a 120vac LED string usually looks like a 'brick' with wires - just like a ballast.Some companies even describe them as ballasts.More specifically they are called LED Drivers so they aren't confused with 'power supplies'Each LED Driver is designed for specific wattage and number of LEDs it supports.To operate your LEDs properly, you should give each one it's own driver of the proper rating or find a driver than can operate single or multiple LEDs of the same wattage simultaneously.
>>1115542>Some companies even describe them as ballasts.http://www.prweb.com/releases/2011/02/prweb5100754.htm
>>1115540Cheers, that helps a lot. Imma look up Thevenin>>1115542Shit, I've been using LED driver and power supply interchangeably, I guess I need to get it in my head that they're completely different things then. >Each LED Driver is designed for specific wattage and number of LEDs it supports.Gotcha, this clarifies everything perfectly. No mixing and matching (kinda) get the driver(s) that match what you're doing perfectly.
I nee to know a homemade way to build a catapult to help me crusader some heretics
So I got this Zippo when my grandfather died. I don't smoke but I love the shit out of it. I'm not sure if it's normal but after about a week the fluid reservoir evaporates entirely whether I've been using it or not. Either way, is there a gasket or something that wouldn't damage the lighter but would make the opening airtight or close to it? Thanks for reading.
>>1115096You fill your zippo daily after winding your watch and putting away your strup and straight razor. Like a grown man does... in the last turn of the century.Now? Just keep your batteries charged.
>>1115213>Not honoring old traditionsGit gud
>>1115306Is that why you are circumcised?>honoring old traditionsIf it has outlived its usefulness it has outlived being honored.
>>1115347>uncut fag projects insecuritiesmore news at 9
>>1115349>cut fag protects insecuritys
Putting in wood mulch/chips and rocks. Any other fags out there do anything similar, my only issue is that niggers walking up my street decide my lawn is a trashcan, dumping thier various debris, but i cant flim flam the zim zam here, i digress.
>>1115040Looks like shit and stinks in humid weather.
>>1115110I was doing some hvac work in a lawyers office once. one of the cases on the desk was someone was suing a homeowner because their sprinkler made the sidewalk unusable and they sprained their ankle stepping onto the street to avoid getting sprayed.
>>1115040Put a metal decrative tashcan out . Dont expect niggers to use it. They view the world like they live their life, and trash everything around them.
Its funny how uneducated white trash always blame niggers but not the Jews, whom made them their modern day slaves. Trump even know this and made his daughter marry a Jew and convert to Judaism. The Kabbalah isn't like the bible you stupid white trash.
I'm planning on making what I call a "make shift computer". Essentially I want a mechanical computer that isn't like the kind I'm using right now to type this message on, but, instead, can be able to run a word pad of sort without being electromagnetic. I don't actually care too much about the mechanical parts themselves, but, instead, I care about the "logic gates" and how they make certain processes work.So I already know how to storage memory into binary through the use of the SR latch. I know how to add and subtract with an ALU as well. The problem is that I don't understand the functionality of other things in the computer and how they are set up through pure logic gates.When I look up a guide on the internet, it doesn't actually explain it or it uses logic gate clusters instead of explaining what specific logic gates are needed to make it function this way. Please halp.
>>1115026A processor is a very complex design, requiring many abstraction layers to fully grasp its inner workings. The reason that components in a layer are specified using subcomponents of the previous layer, and not using transistors or gates, is because the specific implementations of those devices is dependent on the actual hardware. For example, in CMOS logic, NAND and NOR gates are the most basic type of gate, and ALUs are built with this in mind. If, in your specific system, OR and NOT gates are the easiest to make, you'll probably try to build things around that.With that said, I still don't know what are you trying to build. A binary mechanical processor, like a Z1? Or an analog computer? Maybe a denary computer, like the analytical engine? Are you designing the CPU from scratch, or using a known design, like MIPS? What type of logic are you using. latch-lever logic, rod logic, other I'm not aware of?
>>1115095yeah, ok, good luck, not gonna happen.Remember those old computers, that ran off paper cards, and used tubes? A whole building full of that shit was basically the power of modern scientific calculator.If you want something, so complex as a notepad program you just gonna fail.Maybe you just didn't vocalise what you really have in mind. The most realistic thing you can do is various mechanical calculators, integrators and shit. But not a goddamn computer.
>>1115129>I'm just going to watch some lectures so I don't have to deal with autismUnfortunately, there's no known cure, so you're going to be stuck with it for the rest of your life.And I take my original view back: You're not just ignorant, you're stupid. Worse, willfully so.
>>1115097Are you the same guy who was trying to build Batman arm braces last week?
>>1115129>like I said, you are just trolling. Also I'm just going to watch some lectures so I don't have to deal with autism.sounds like you didn't understand a word he saidyou're not going to do anything
Can anyone tell me if there are any cheap alternatives to a rotary tool? I'm trying to cut a hose clamp in half longways and I'm not in possession of such a tool? is there any other simple tool or item I could use as a substitute?
hacksaw bladetape for handle
>>1115025Just buy a used one off CL. I'd seen ones in my area in decent shape selling for under $10. No accessories, though, just the bare too.
>>1115025>cheap alternatives to a rotary tool?it's called, a grinder
What's a grayish, powdery, nontoxic substance I can use to mimic common dust? Something that can be applied quickly.Need this for use in a film. Everyone recommends baby powder, but it shows up as too white, even on camera.
>>1115191>>1115197You joke, but I promise it'd sell. Realism doesn't matter. It's not about what's real, it's about what feels and looks good at a glance. Almost nothing you see in a film is real, and there's damn good reason for it. Here's why people recommending actual dust are mongoloids:>Dust contains hairs, debris, bits of web, and clumps that are too too small and numerous to be controlled or altered in a timely manner for closeups. If it can't be controlled fast and practically, to minute detail, then it's not appropriate. Maybe if you were just throwing that shit on the floor, it'd be fine, but we're not.>Can't realistically get enough of it. You have to assume things will go wrong. Shit will get spilled, things will be done incorrectly and have to be done over, etc. Murphy's law. If I can't have buckets of spares sitting by on set, then it's not appropriate.>Actors are whiny pussies and will pout about their sinuses or some shit if they suspect that the dust is real. This wastes valuable time.>Literally collecting dust would be cheaper, but so time consuming that it simply isn't worth it, even if it was perfectly consistent and controlled. A small production doesn't have enough people on board to have a guy spend three afternoons vacuuming up attics. That's fucking ridiculous.
fullers earth. standard film fx material.
>>1115248Fuller's earth is good, baby powder and graphite mixed will work as well.
>>1114990Cocaine.You're making a movie, so plenty of this should already be on hand.
>>1115237Well if your team actually hoovered up your own houses you would easily have a good amount with 0 extra work. Or did mom just change the hoover bag?
Why wont this outlet work
>>1114957Fuck Its A Toyota
>>1115382gas doesnt need oxygen if you heat it high enough
>>1115249I'll need you to show me yourself, sunshine.
>>1115567already tested it unplugging a block heater in the winter
>>1115199Not sure if bait or not, but I guess your retarded none the leaa
So I made this ring, and it's a bit crooked from the side. I've never made anything else with silver before, and I'm having a bit of trouble trying to straighten it out. Anyone here have suggestions?
>>1114970You could always heat it up and put it in a press then hammer it back down to size.for a diy press you could just use a car jack
>>1114991I'll give it a try.
>>1114949sandwich it between 2 blocks of flat steel and hit with a hammer
>>1114949is that lost wax casting? i'm a noob with lots of junk silver, i have never smelted before but want to craft some small silver stuff then work up to making something out of my scrap gold
>>1115597>that shitty finish>lost waxLost wax is supposed to be near net process. I'd say your biggest worry is getting the junk silver +1000 C and degassing it.
Hey /diy/,I've had this traffic light with 12" lenses for some time now. It has a bracket for hanging, but I'd rather put it on a stand. Problem is, these stands cost in the ballpark of $200.Is there some kind of fitting I can use to secure the light on top of a length of pipe? The hole at the bottom (I assume it's standard) has a diameter of 2", and is not threaded.
are you asking for a clamp or what, I don't understand
>>1114971I'm not certain what hardware to use. Something that can secure the light to the top of a post.
the simpler solution is to attach to the back of the lights using clamps, coz you have lots of surface area to work with. attaching something to the top of a pole is way more difficult unless you have a flange that fits the top of pole and has screw holes.
>>1114944You should ask your local government's road service department.
>>1114944Make stand out of threaded iron pipe and fittings.
Here goes. I've been without a steady job for the last three years.Trough the EU Employment Agency I found a job in Germany.I will be a boat mechanic looking after a fleet of 30 diesel engined boats. It starts in two months.Wage is €4,000 NET per month and accommodation is provided so not bad at all.Thing is, I have no experience or qualifications. (I exaggerated a bit on my CV)I know very little about boats or engines and I don't speak German either.Should I try and wing it or just quit now?
>>1115446dude boats lmao
>>1115236not him but as a physicist i know how engines work in theory, how do boats differ?
>>1115581With boats corrosion and water contamination are much different things than land based motors.
>>1115670doesnt that just mean doing electrolysis every noe and again?
>>1115671It often means cutting and welding a replacement steel panel and installing a buffer or sacrificial anode... I'm no expert BTW so take my advice with a grain of salt
Looking for a diy cardboard valet tray. How can i do this and have it look not awful? Looking for how tos on the design
>>1114909just use a bowl you mongoloid
>>1114909What is this twattery?
what is with all this cardboard shit?Did you get a bunch of (You)s off the first one and now you need more?
Seriously, I get the need for diy sometimes, but Jesus man, these things are like 8 bucks. Just buy one if you don't have the sense to cut, fold, and glue cardboard.
Hey I've seen some guides on how to make one of these things from Stargate, but what about function?What can I cram in the thing to hold some serious power?
>>1114893leds hooked up to lithium ion battery is going to be the best your gonna get
>>1114893>What can I cram in the thing to hold some serious power?You could cram a pocket universe and harness the entropic energy from it.
>>1115413http://www.therpf.com/showthread.php?t=159126>>1115461>You could cram a pocket universe and harness the entropic energy from it.Best I cando is supercapacitors!