Does anyone know how the lever mechanism of a traditional pump car work? I'm thinking of building a miniature model but I can't find any design schematics for it. Thank you.
Topic by pinoymale | last reply
I saw a quite old "home improvement" show from the 80's the other day and was stunned to remember how much we gained in ready to use parts and tools these days.A part of the show focussed on a custom made dining table with a matching cupboard/sideboard.The interesting thing here was that no nails or screw were used.Tongue and groove systems, smart notches and such were used instead with just wood glue.I admit the professionals made it look easy to use a hand planer and chisels to carve out some ornaments and details but the result speaks for itself IMHO.We now mainly use power tools, ready to go parts like metal angles, easy screw systems and so on.Wouldn't it be great to have a contest where people actually build wooden furniture, even if it is just a chair, by using traditional tools only?To misuse the term call it "Organic furniture" ;)
Topic by Downunder35m | last reply
I have a traditional couch and a pull out couch (sofa bed). Both are great, but the traditional couch is more comfortable. Can I take the internal part that is the sofa bed and put it into the frame of the other couch? Anyone have any suggestions on how I can do it if that's possible?
Question by abcommendatore | last reply
There's a cute little article (blog entry) in New Scientist, about a collaboration between a Buddhist monastery in India and San Francisco's Exploratorium. Buddhism, especially under the 14th Panchen Dalai Lama, has had a very favorable and welcoming attitude toward science. Traditional Buddhist practice toward enlightment stresses observation, experiment, and reproducibility (all classic hallmarks of "scientific" investigation), and elevates personal questioning above outside authority (unlike traditional Judeo-Christian-Islamist "revelation").
Topic by kelseymh | last reply
Nowadays almost all hand saws are induction tempered. It seems such a waste to throw them out all the time after they get dull. Traditional hand saws could be sharpened with a triangular file and a special tool to bend the teeth outward. I guess sharpening can be done by means of a dremel tool with a diamond disk, but what about the bending of the teeth? Any suggestions?
Question by BobS | last reply
I have 3 single, older, traditional wood-sided garage doors. I am making a room out of the garage and, fixing 2 doors, but still want 1 door to open. Each door is 8'Wx7'H with 5" horizontal T&G siding. I planned to add some 24"x14" wood window sashes across the top, add insulation and some kind of thin paneling, doorskin or such to the back side and trim out the front side with 1/2" x 3" redwood. The fixed doors are no real issue, but what I'm puzzling about is how to make one door openable, but yet weatherized, and without all the traditional opening hardware showing inside. The windows & their framing, the trim, and back panels will add weight, maybe alot. I want to remove all the exsisting spring hardware, so it looks like a room inside and not a garage. I thought about some kind of block & tackle, or manual gears to lift the door, but I just don't know. Also, I want to keep the doors appearing on the outside like regular doors, but modernized, and all 3 the same. Any ideas, (wild or otherwise, I'm open) to lift and open a door like this? I considered remaking the doors into carriage doors, but my driveway is sloped, so that could be a problem for rollers and any type of weatherproofing. I wanted to avoid completely remaking the doors any more than I already am. Thanks for any ideas.
Question by geniem | last reply
Is there an easy way to reduce the speed of a sewing machine? I'm teaching a young girl to sew, and every machine just goes too fast. I don't have room for a traditional treadle, but something foot driven would be great. I need something easy, compact and portable. At least one machine has an external motor = an external belt. Any ideas?
Question by mole1 | last reply
If you are curious about what "real physicists" do, or what the current "hot topics" in research are, take a scan through the "recent postings" at the Physics Preprint Archive. Started for the High Energy Physics community in 1991 at Los Alamos National Lab under the name xxx.lanl.gov, and with a purely e-mail interface(!), arXiv moved to Cornell Univerisity with its creator in 2001.The archive includes preprints from all areas of physics research, not just HEP, as well as computer science, mathematics, and quantitative biology. "Preprints" are a way for the research community to get their results out for everyone to read, during the often lengthy period (months, sometimes!) between submission to a journal and actual publication. In many fields, it has been traditional for decades that printed copies of "preprints" were mailed out, sometimes in regular batches, between major University departments. That mechanism has been superseded almost exclusively by the arXiv database.Besides these traditional pre-publication journal articles, the archive also often includes conference proceedings, and submission of much older published papers of general interest to the community. There's also (usually in the general "physics" category) a scattering of crackpot nontraditional science papers.
Topic by kelseymh | last reply
I'm an assemblage artist and I'd love to begin putting electrical components into my art pieces. My first idea is to back light a piece with a small lamp which the user has to pull a cord to turn on, and then only lasts a short time (20 seconds?). This would need to run on a battery of some sort which could be changed when it's dead. Can anyone point me in the right direction? I know VERY little about wiring/electrical - only enough to rewire traditional lamps or light switches in the home. Thanks so much! Shelly
Question by pickwicks_plum | last reply
Instead of the traditional methods, this surfboard is based on a core that's made up of nearly 400 pieces of cut cardboard that intersects and is then coated with fiberglass and resin. So far it's only a one-off, but more will surely be made.When it came time to replace his old surfboard, Mike Sheldrake decided to build his own. But the former Web programmer didn't have the sculpting skills to carve one out of foam the way professional builders do. So he used 3-D modeling software to design a snap-together deck that's as sturdy as a conventional model and performs just as well, made from the cheapest material he could find: cardboard. link
Topic by fungus amungus | last reply
I have an unlimited supply of massively invasive canes (Arundo donax) growing on my property, and my chicken coop needs a roof. Anyone have ideas on turning canes in their natural state into roofing material? I will start just experimenting with weaving together lengths of cane, but some experienced advice would be very welcome. EDIT: Traditional thatching appears to involve attaching bundles to each other by essentially sewing them with wire or flexible blanches. I'm thinking this is a specialized craft precisely because the techniques are not entirely improvisable. concerns: weather proof materials (aside from canes, fixtures that will not rust/mold/decay) technique of attaching bundles to rafters? peak of the roof?
Question by lj2shoes | last reply
Among microscopy amateurs there is a long established tradition of grinding lenses and making their own microscopes. ( Antonie van Leeuwenhoek, who is known as the "Father of Microbiology", was a linen-draper by trade with no formal scientific education, yet his skill at making microscopes and his observations won him international recognition.) When it comes to non optical microscopy (electron and scanning probe) the idea of making your own microscope at home is more intimidating. Mostly because of the cost and difficulty of getting parts you'll need. But it seems that this man, John D. Alexander from Gilbert, AZ, found a clever way to build a scanning tunneling microscope using cheap and commonly available parts. Have a look at his site www.geocities.com/spm_stm/Project.html Very interesting. If someone of you will try to build his own microscope, let us know.
Topic by Fabio M | last reply
So I finished a new speaker I designed, today. It was just then that I thought about the possibility of creating a new design. In the tradition speaker, a coil sits below the magnets, and they are pulled in and out of the coil, creating vibrations (subwoofer).I like this method, and all, but I wanted a bit more! So I got to brainstorming. If you were to put a coil around the magnets, it would still work - it's just have no bass what-so-ever. Well, what if we were to put a coil on the bottom, as usual, but add a second coil on the opposite side, while allowing it to encircle the magnets, but not get in the way. So when the magnets get pulled into the coil, the second coil does not interfere, but still is close enough to the magnets as to create sound. Would this have any adverse effects? Would it ever work? I've included an image so you can see my vision. I may very well just be stupid, but hey, it's an idea. Going to work on it tonight.
Topic by freethetech | last reply
I was thinking about 3d printing aluminum and was wondering if you could do something like this. You have a stainless steel air tight cylinder, surrounded with some refreactory, then nichrome wire, then insulating refreactory. The first layer of refractory is to prevent an electric short between the wire and the stainless steel cylinder. Stainless steel so it will take longer to oxidize. You would fill the cylinder with aluminum, close it, turn on the heater, t would heat up the stainelss steel and aluminum and melt the aluminum. Temperature could be regulated. Air would go to a hole in the top of it, the air would be regulated by a solenoid valve and a a pressure release valve. A needle with come out of the bottom, however it would be bent into a upside down U shape and one side would poke out the bottom, this would preven the aluminum from running out when there wasn't pressure. When the solenoid is open, aluminum comes out, when the solenoid is closed the release valve is opened to get rid of any excess pressure and stop the aluminum flow. This would be put in the place of the the traditional extruder, would this work?
Question by snowluck2345 | last reply
I would like to know which type of vehicle is more environmentally friendly. Electric and hybrid vehicles are gaining in popularity and they are touted as green, but they clearly require more energy and resources in their manufacture due to their battery packs, rare earth metals and electric motors. On the other hand, traditional internal combustion vehicles require fewer resources to manufacture. However, I imagine that it converts fossil fuels to energy less efficiently than electrics because the conversion process is smaller, unlike in large scale power plants (not sure if this is true). Electric === More resources to create (-) Power Plant (Generates energy efficiently?) (+) -> Power Lines (A: energy loss) (-) -> Motion +,-,- Gas === Fewer Resources to create (+) Combustion Motor (Generates energy inefficiently? B: energy loss) (-) -> Motion +,- I'm pretty terrible at explaining this, but is the energy loss at A or B worse when comparing the two systems? For electrics to be viable, it must offset the higher creation cost. Just wondering which one is actually more "green" when you factor in production (disregard cost of transporting fossil fuels to gas stations and power plants).
Topic by crestind | last reply
The Guided Busway Essentially, this is like a railway for buses- a narrow concrete "road" open only to modified buses, following the path of an old railway to link commuter destinations together. Supporters say it's more practical than a rail link (as buses can drive straight off the end into town roads), opponents say the concept is flawed and that building a traditional railway would be cheaper. The buses are apparently "100% biofuel powered", though I'm having a hard time finding out exactly where those biofuels come from. The future of transportation, or greenwashed white elephant? Update 30-03-2010: I thought I should update this in light of bassman's comments, and because of something I wrote last October: "the busway is due to open in a few weeks (so by our bureaucracy time, make that spring 2010)" Well, it's spring 2010 and this morning on the train to work I finally saw a bus on the busway. It was marked "not in service" and was populated by half a dozen men in high-vis jackets, so I assume it was a test run of some sort, but at least there is life on it. Maybe I'll be able to post more about it before 2011?
Topic by PKM | last reply
The world's first international hydrogen-powered motorsport race was held in Rotterdam this weekend.Dubbed the Formula Zero championship, the contest pitted teams from five countries against each other in a zero-emissions go-kart race.Each team's entry was powered by a commercial fuel cell that produces electricity from hydrogen. It may be small-scale, with only six teams entering go-kart sized vehicles, but Formula Zero is an officially-recognised motorsport, with plans for scaling up to Formula Three and the Formula One style and speeds."In 10 years if the motorsport industry as a whole hasn't engaged in zero or low emission principles, it probably won't be around," said Greg Offer, who headed up the Imperial College London team. "Teams that embrace this new technology early on will succeed, and those that don't will fall by the wayside."Racing excitement won't suffer, though; Dr. Offer says that fuel-cell powered vehicles don't represent a compromise in performance over traditional petrol-fuelled engines.'"With a combustion engine, you have to reach three or four thousand revs to get your peak power," he says. "With an electric vehicle, it's all there from standing, and they're more efficient." The next races are planned for the US in March 2009. Plenty of time to get your own entry built.Imperial TeamFormula Zero homepageBBC news article
Topic by Kiteman | last reply
Since joining Instructables at the end of September, I've jumped into several discussions of scientific topics, not all of which are directly related to my specialty (experimental high energy physics). Why should I pose as any more of an "expert" in these different areas than anyone else?Well, I shouldn't (pose, that is). In the interests of disclosure, I thought I'd post some of my general sources for scientific information. I'm also hoping these might turn out to be of interest to other I'bles community members. PhysicsFor current research, I skim the arXiv preprint archives every day or two and see what's out there. These are technical papers intended for peer-reviewed journals, so they are generally not accessible to the lay public.Physics Today This is a "general interest" publication of the American Physical Society, intended for physicists but not for subfield specialists.PhysicsWorld from the IOP, similar to Physics Today. Non-physics ResearchNatureScienceBoth are peer-reviewed journals, but cover a full range of fields, including physics, chemistry, biology, astronomy, and more. Popular Science NewsNew Scientst Generally good, but also includes a sprinkling of non-traditional speculative articles, so be a bit on your guard!Science NewsScientific American I actually get this one on paper, in the mail...I also highly recommend the Science & Technology articles in The Economist. As I've commented elsewhere, they have some of the best (both in language and in technical detail) journalistic coverage of science that I have found anywhere.Update 15 Nov 2008: With thanks to GorillazMiko,Science Daily Books, Books, BooksI read. A lot. Stephen Jay Gould, John McPhee, Oliver Sacks, a wide variety of "popular" science books.
Topic by kelseymh | last reply
Some might have noticed that I started a few, lets say, unconventional topics here.I added one just as a response to some very nasty feedback I got in other places.If you wonder what I am talking about check my topics about all things related to magnetism, "free energy" and such nonsense.The feedback I got was directed personal enough and verbal enough that I decided to increase my speed of seeding bread crumbs that might allow other people to "see" things slightly differently.Being called insane and mental case is the only things I use here as most of the rest would qualify as insults of the worst kind.The goal that was claimed I totally missed is to make people open up.Science or knowledge is as fluent as life itself.It eveloves with us, around us and through us.But we learned to use technology mostly to replace humans and to make our life easier.With that laziness also a reduced "desire" for knowledge and understand evolved.It is now far easier to "Google it" and forget it right after than to acutally learn and really understand something.A prime example is the disappearing artform of creating Japanese swords.No industrial process can produce a steel as pure and with such properties as used to be "offered" to the master swordsmith.Both are highly specialsed and rely on each other to create the perfect sword that outlasts generations.Once tradition gives way to modern life even this art will become a lost artform.We lost so much already, be it species, health, enviroment or just a "clean planet".Instead of accepting nature back into our scientific thinking and understanding we will continue to fail and get even more reluctant to learn new things.The blockbusters of science are no longer finding new laws of phsics or trying to understand things.We try to go further and further and use more and more dangerous ways to "create" the energy we continue to use more and more with no regrets.Well, other than complaining about the bills for it, which we wouldn't have otherwise...Why do we need more forms of colliding atoms to create energy?No because we need so much, only because we want more and more and at "centralised" locations.Distribution, control, money...Allowing us to use solar panels to reduce our electricity bill is nice, but try to overdo it and make good money by creating you own solar panel park and you get into trouble already.You can't see it anywhere other then back to your provider.And you only get whatever he thinks is a fair price for it, usually far less than what you pay to get it.Once you reach zero some even won't pay you money at all.And since there is always winter and night times it is only good that there will be always a need for electricity from the grid.Just try to get rid of your elecricity, water and gas connection in a township or city in case you found other sources you get for free.....Even if you build new most won't even allow you to without these "required" connections.If you need waste waster you also need tap water you pay for.And since a waste water treatment is no longer hyginic enough (despite proving the opposite) you can't get out.Gas you might be able to avoid but if there is electricity in the stree than it is already a building requirement to provie to the builder...What if all this nonsense and fakery actually has a true background somewhere?Humans are not meant to fly but we developed planes anyways.What once was a dream for a select few is now the prefered travel mode ofr most going on a far away holiday.But it is only so popular because there is a big demand.And where is demand profit can be made.Like a farmer:If you have ton of corn like twenty farmers around you then your local price will be low.Sell them a bit further away and you might get a lot more.In return our demand is closly related to the demands of those that provide the source of your demands.We all need energy and we evolve into a society that will need more of with every new generation.I try to give you hint in the form of a comparison:If you have a nice man cave and love to tinker than you might have a framed hand drill on the wall to remind you of how it all started for your grandfather.Or in most case you just liked it and got it for 2 bucks from a garage sale LOLEither, imagine all electricity would be gone and lost forever.Suddenly this crappy drill becomes a status symbol because only you can do things other people really struggle with - you drill holes with ease...Imagine the rpice you could ask to sell it..."Free energy" is the same but sadly in reverse.If a company sees a profit than it will be utilised some way.And if it happens that energy is your main income and keeps you rich and in control than you don't mind paying two or three fortunes to someone so he can forget and is happy give you his machine.Or would you really say no to life of no limits and with nothing to worry for your future generations of kids and grandkids?A few tried anyway to make a furtune themself by keeping a circle of trusted persons and finding enough willing investors to get their project going.Even if you can find some flaws there are still doubts about what someone would go through the lenght of providing online updates, sales numbers, testimonials and so on for years.Funny enough actually finding someone who is sceptic and make him check and report about it does not work either.No big university orders one or asks to really check it and provide a real world testimonial.No government or legal agency steps in to stop the "fraud" either.What is real, what is fake, what is disguise - you can figure it out if you want to.Ok, I could, but why bother if litereally everyone one already did and showed nothing works when it comes to the great unknown?Exactly for that reason alone it is worth it!People might make money now from ads or through clickbait but the topic is older than the internet already.And the proof even older than electricity...So many people would not try unless someone convinced them to try it ;)Might be just a bad joke but gets the point:If you ask 20 people if you can swim through the river to get to the other side then you might get confusing answers.1. No problem it is safe.Fully true but the guy might be from far up the river where it has no crocodiles in it...2. You could try it but a boat is safer as there might be corcodiles here.Still leaves you the option to swim as you can't be sure about the reptiles...You could go on and create a near endless list with bridges up ahead and so on.What it comes to is that depending on HOW you ask and WHO you ask the answers can be as different as day and night.In terms of science and making someone understand it take the most basic approach possible.Remember that time in school when your math teacher confronted you the existence of negative numbers?The confusion with the zero and how to add, subtract or multiply...Your teacher might have been great or you a quick learner but imagine the worst possible way to teach you an understanding of negative numbers!You know that 5 - 8 equals -3.You learned that this is true and why it is so.Imagine your teacher would have explained this extra simple like back with the apples when learning to add numbers."If there are 5 people in a room and 8 people leave the room, then 3 people must go back in so that room is empty!"Makes total sense if you expand the number game from above to 5 - 8 + 3 = 0 !!No sense at all however if you do it with people ;)People are not numbers, pressures or volumes, they are "real" to us.We associate certain things automatically, other we learn to associate and interpret through learning.Learning however is no longer actually doing all that would be involved in less technological world.We like magic tricks because we fail to understand how it is done or sometimes even how it is possible.Today it is for entertainment only.A true magician would never use his skills to scam people.But spend enough and research and you can do the same trick you saw on stage.Some not as good or not all though - thats life...Ask a good magician how how long it took him to get his new trick ready for the stage and quite often you get to hear it was years in the making.Think about that fact when you judge what is possible by dedication ;)
Question by Downunder35m