### mechanical wave

I'm trying to build a tail of a fake animal, and the tail is kinda long (total length of about 3 feet), I have a 10 pound pull solenoid and I want the tail to kind of do a wave thing, like if you were do a wave with your arms ( not in a group, all by yourself where you hold your hands together, you know what I'm talking about). I know how to do the electronic part of it by sending pulses to the solenoid, but How would I convert that into a believable tail?

Posted by guyfrom7up 11 years ago  |  last reply 11 years ago

### The Boy Mechanic

Found this:The Boy MechanicIf you look at it, it seems old hat, but a few Hidrogen Generators, countless Photo projects, a real cool Turbine, and a pair of Lathe How-tos, along with an Aluminum Casting one, I find it interesting to say the least....And a Stationary windmill, that turns no mather where the wind comes from!

Posted by Edgar 12 years ago  |  last reply 12 years ago

### Sear Mechanisms

I have tried to build a sear system on some of my guns, but it is so hard! I built one that kind of worked but couldn't fit on my new rifle that i just made (i might post but has a block trigger right now). Who knows how to build one of these sears, and is it really worth it? What if a block trigger just works better?

Posted by Mintyhippo 11 years ago  |  last reply 10 years ago

### Mechanical timers - wind up mechanism

Can anyone advise what is the maximum length of time the mechanism on a mechanical hand-wind timer can last for (approx range will do) i.e between 60/70 minutes, 3/4 hours.

Asked by MMAM 7 years ago  |  last reply 7 years ago

### Redirecting a mechanical force? Answered

Hi, im looking for some help with a physics/engineering type problem. Im looking for the most effective method of tranfering a mechanical force from one direction to another. For example if i had a 1" horizontal rod struck on its east face which then begins to travel westward on a fixed horizontal track, im looking for a method of transfering the energy (not sure if thats the right word) in the opposite direction. A few important factors are that the rod which is struck does need to travel around 4 inches on the fixed rail, and any vertical movement needs to be kept to a minimum. Below is one of my early ideas, serves little pupose as the mechinism is too large but gives you the jist of what im talking about.

Asked by Squibo 8 years ago  |  last reply 8 years ago

### Mechanism for mechanical timer

Hello everyone, My wife and I both feed the dog, but we're never sure whether the other's already done it or not.  (the food disappears pretty quickly)  I'd like to build a track with a slider that takes about 10 hours to slide from 'fed' at the top to 'not fed', and make it so that the slider is easy to slide back to the top. What immediately comes to mind is a counter weight escapement mechanism, but I though I'd hit up the brain trust to make sure there wasn't a simpler way to pull this off.  (I could also envision a timer chip hooked to a mechanical release, but I'd prefer to stay wholly mechanical for this one.) Many thanks!

Posted by oldmicah 7 years ago

### Mechanical washing machine.

I work for a charity with Aboriginal Australians in the remote outback of Australia, a place called Arnhem land, it is worth a google. People need washing machines, they buy them, they break , even with warranty cover, they can not be fixed as no service men will come here to service them, we are too remote.  Houses here have about 20 people living in them, there is no work here and people live on small government payments which are not enough to cover daily expenses. Due to the difficulty in accquiring and maintaining a working washing machine, health issues such as Crusted Scabies have taken hold here, and cause much suffering. We can't erradicate the disease here without getting working washing machines. We need a solution, an easy to use, easy to fix washing machine. No electronics. Cold water only is fine. Possibly even hand operated, or wind operated (or other)  I found one which is a plastic  tub which turns with a handle and stands on two feet.  However the construction too flimsy, the tub not big enough for a bed sheet, it was green though. Didn't use electric power. Anyone have any ideas? Know any other sites I could post on to get ideas? Thanks : )

Posted by lisafromnz 6 years ago  |  last reply 6 years ago

### Handlebar Lawnmower Mechanism

Hello Community, I would like to know if someone has any idea about how to design a mechanism that works like this one:By pressing a button, I should enable the rotation. Whitout pressing, it should be locked.Thank you!!

Asked by FedeR3 10 months ago  |  last reply 10 months ago

### New gun mechanism?

Howdy guys, i was looking on making a gun. But me being me, I dont want to make the same as everyone else. Is there a mechanism concept out there that has not been done yet that I could try? Thanks.

### theo jansen mechanism

OK, I finally got hold of measurements for theo's strandbeest. these come directly from theo himself which means there accurate however it also means they're not in English. the numbers are there and they're easy to figure out, but it would be nice to know what the paragraph beside them says. so if any can read it, please post a translation. thanks

Posted by budsiskos 10 years ago

### DIY mechanical Iris ? Answered

Hello all, Im going to try to make a mechanical iris out of wood and make it the lid to a box type thing, as seen here http://www.thingiverse.com/thing:4551, but i need a diagram or outline of what one of the shutter pieces looks like, I would like there to be only 5 shutter pieces, and i would like it if they didnt over lap each other, but any diagram of one might work, PLEASE HELP if you can. Thanks! ~captain molo

Asked by Emsaid 8 years ago  |  last reply 7 years ago

### Mechanical Cover Flow

I was thinking of a project for a type of shelf for your CD jewel cases. It would be a way of presenting CD covers in a similar way to iTunes 7's cover flow. (see http://upload.wikimedia.org/wikipedia/en/a/aa/CoverFlow_Screenshot.png) You could mount the cases and have a slider to flip through your CDs. Anyone know how this could be achieved?

Posted by spinach_dip 11 years ago  |  last reply 10 years ago

### How do I build a mechanical calculator? Answered

I'm planning to build a mechanical calculator which can add, subtract and multiply.. I cant find any help. Can anybody give me some links where i can be guided better?

Asked by Yashknowsbetter 9 years ago  |  last reply 6 years ago

### Manual satellite dish positioner.

I'd like to switch the position of my sky satellite dish between two satellites positions from the ground.?

Asked by waldy 9 years ago  |  last reply 9 years ago

### have any mecahanical related miniproject topics and explain how can do?

simple&relatively cheep mechanial desighing for my MINIPROJECT,pls give details also

Asked by dijinkumar 9 years ago  |  last reply 9 years ago

### finding a best way of design solution?

Hi. am finding a best solution for my design. look at drawing. there is 4 bars. about 2~3cm long each. their tip is holden on something in middle. when you pull up right black bar, right gold one will pulled down. "in same degree." when you pull down left gold bar, left black one will pulled up. "in same degree." likewise when you pull up two black bar, two gold bars will pulled down. "in same degree." its not just a normal hinge cause their move will interactive.15 degree up - 15 degree down. what can be a best (simple, durable, hard) solution?

Asked by Sung-hyeonY 1 year ago  |  last reply 1 year ago

### Wearable Mechanical Butterfly Wings

I have half an idea of how to make the wings on my daughter's fairy costume work. My ideas involve vairying degrees of a pulley system, springs or rubberbands, and kite string. Any ideas of how to connect the pieces -or alltogether better ideas- would be greatly appreciated.

Posted by mae060669 10 years ago  |  last reply 10 years ago

### Mechanical wall sculptures

These mechanical sculptures by Brett Dickins are awesome. I'd really love to see his workshop with a bunch of these moving at once. via BoingBoing

Posted by fungus amungus 8 years ago  |  last reply 8 years ago

### looking for help fabricating a mechanical arm for use in the construction industry?

I am looking for person or persons that posses the ability to help me build a mechanical arm. I need help with the computer hardware/ software end.  The arm will be used to hold a power washer hose.  Many applications I want to use it for. Endless possibilities.   Are you up for a challenge?  I live in NY but will travel. Dave S.

Asked by davesender 4 years ago  |  last reply 4 years ago

### Should I make an instructable for this?

I made a mechanical Iris a while back and i am wondering, should i make an instructable for it? It is self-contained, and I made a strap for a monocle. It is unfortunately at my school right now, during spring break, so I cant make it this week. I am just wondering about your thoughts if I should do it or not.

Posted by dombeef 7 years ago  |  last reply 7 years ago

### Mechanical vs Electrical Engineering? Answered

What are the primary differences between the two? Which is a more rewarding career path? Which major is better for someone who wants to get a broad understanding of engineering? Is it feasible to get a double major?

Asked by Chikpeas Brother 4 years ago  |  last reply 2 years ago

### Need help

Looking for help with my new project. I want to power my mechanical arm using hydraulics.  I would prefer to use a joystick controller.  I want this arm to be able to hold a hedge cutting machine. The arm will have the same freedom of movement as a human arm. Eventually I want to use this arm on a machine such as a bobcat or similar device. For now I just need to be able to power this arm and then I can go from there. Anyone up for a challenge???? Dave Sender my E-mail  mrdavesender@gmail.com Please see the photo of the size of the arm I'm looking to power.

Posted by davesender 4 years ago  |  last reply 4 years ago

### plans for a gallon paint can lid sealer? Answered

The kind you see at a paint store, a hand cranked thing that gives even pressure to close lid. I called the place where the paint store bought theirs and it costs \$485.00

### Help me create wear-able eyes that can move back and forth for Halloween!

Hi!  This is my first time on this site,so i'm not sure where to ask for help with this.  I'm not very mechanically inclined, so I need all the help I can get to make this year's Halloween costume.  What i'm aiming to be is:  a Kit Kat Clock.  The tail wagging,eye moving pop culture kitchen icon.  I'm not so much worried about the tail bit, but the EYES are what are most important. I had this grand vision of using a headband and affixing some spherical shapes with some sort of battery powered way to make them move back and forth.  The goal is to wear them on my head, no matter.   Maybe altering a pair of sunglasses could be cool, but something tells me i'll have trouble seeing. Anyone, ANYONE with advice, please respond.  I don't even know where to start with this.  What are some things I can buy and take apart that would give me a back/forth - right/left mechanism?  The only thing that comes to mind is like a musical pendulum or something.  I would even offer money if someone has the know how to create this for me. Thanks!!

Asked by valalltogether 6 years ago  |  last reply 6 years ago

### Strong Egg Timer mechanism?

I want to a mechanism that turns a drum very slowly for a few hours.  It should work just like an egg timer: You wind it up and then it turns slowly. Is there mechanism available that works like this or do I have to built it from scratch?

Asked by uwe999 5 years ago  |  last reply 5 years ago

### Mechanical Bucking Rodeo Bull

Hey everyone, does anyone have plans or know a website that explains how to make your own mechanical bucking bull? Doesn't have to be as complicated as a proper one, just something to have a bit of fun on, and not too expensive to make. Thanks!

Posted by tapdogs1 11 years ago  |  last reply 11 years ago

### project for mechanical engineering student? Answered

I am preparing a project on the topic "necessity is the mother of invention".i am a mechanical engineering student.can anybody give any ideas about what could be done on this topic. i am supposed to register the project unitl 12th april.so plz u ppl hurry ?

Asked by coepian 7 years ago  |  last reply 5 years ago

### A Good Bullpup Mechanism, Anyone? Answered

I am looking for a good Bullpup mech to put into a gun like the one in the pic, or something of that sort. In other words, I am looking for an 'ible that has a great Bullpup mech. Give me the URL of the web page, and you may or may not be awarded best answer...XD

Asked by The Red Book of Westmarch 6 years ago  |  last reply 6 years ago

### Water Release Mechanism - HELP!

I've been racking my brain trying to figure this one out, and thought I'd ask you guys. I'm building a project which requires the release of a tethered "buoy" once this sinkable object hits the water. I know I could use a mechanical release - a water sensing probe that trips a servo release - but I would rather keep it really simple, and use just chemistry and/or physics to do the work, and somewhat quickly, within a minute or two. I'm thinking that something must dissolve, expand or contract quickly when in water so that whatever is holding the buoy to the sinking object releases, and the buoy just floats to the surface. Making a toilet paper "fuse" has come to mind, but I was hoping for something more solid. I considered salt (as formed into a salt lick) but because it's so dense would take a long time to dissolve. Sugar cube seems too fragile? Any thoughts would be appreciated!

Posted by PatrickA117 1 year ago  |  last reply 1 year ago

### Mechanics, electronics, robotics or what?

I recently have become fascinated with what makes these moving stuffed toys work; like the Elmos and dogs that wag and walk, etc. I have my own stuffed creatures that I make and have an interest in animating them. But I don't know how to look up a book to start to teach myself. Are this toys considered mechanically powered, or electronically or what? Just what kind of motors are in them? Can I buy these motors? Would it be easy to adapt them to whatever types of movement I would want (according to the critter I was putting it in)? I don't think they would be considered robots; they're much too simple for that. Although I might consider doing something like that in the far off future. But I want to do something simple first; so what can someone recommend book-wise for me to teach myself the workings of these toys?

Posted by biirrd 11 years ago  |  last reply 10 years ago

### Compact bubble gun mechanism?

My 7yo was begging for a bubble gun, and I promised I'd 3d print him one.  To my surprise, there are very few 3d printable bubble machine designs around, and none that match what he wants.  (He wants it to have a handle and trigger like a handgun.)  So, I suppose I'll be designing one. . . (FYI - My parts bin has plenty of fans and motors and even small liquid pumps and I am competent at 3d design. ) My challenge is that the basic rotating disk method of wetting the bubble hoops is both too bulky for a handgun-style bubble shooter, and is highly spill-able. I see online there are numerous toy bubble guns that look like what I want and appear to be much less spill-able.  However, I can't figure out from the pictures how they work, beyond that there is a pump that sends bubble solution to above the hoop and a funnel to route the excess back into the container.  How does the bubble solution get swiped across the hoop reliably? (And, yes, I know it would be easier and cheaper to just buy one.  That's not the point.)

Posted by SvdSinner 2 years ago  |  last reply 2 years ago

### MAC 10 Mechanism Concept

Hey guys. Well, currently, didexo and I are working on a MAC 10. Some of you may have seen his 'ible on the mech he was/is planing on using, so I took that and make something more efficient than his was. I need help on four aspects. 1) Sights. I would really like to see more efficient sights. Ones that look more correct, in other words. 2) A good trigger guard. I truly could not figure out what to do on this score. 3) A good way to make the handle curve. 4) A good way to make the barrel. I cannot figure this out...kinda weird actually. This prototype shoot at least 40 ft., and I am convinced that it could look and preform better with some help from you guys. So, lets here some suggestions... -The Red Book of Westmarch

Posted by The Red Book of Westmarch 5 years ago  |  last reply 4 years ago

### would like to find instructions on making mechanical angel wings for a costume?

Would like to find instructions on how to make (movable)mechanical angel wings for a costume. I have heard from a friend that someone out here has made some and would like to know how this was done. If anyone out there has any ideas, or instructions, help would be very much appreciated. Thanx!

Asked by marge69 9 years ago  |  last reply 9 years ago

### weird question - online source for smallish mechanical parts

Hey, I'm new here. I'm an established musician (composing is my focus).  I've gradually decided I'd like to work on a new composition project which involves electro-mechanical instruments of my own design. I have a decent understanding of electronics, and I don't think the mechanical designs will cause me too many problems.  I've had plenty of experience in building hobby stuff - remote controlled planes, etc. What I don't know much about is where to source mechanical parts.  Electronics, no probs.  But things like wee little cranks and levers, hinges, etc, etc... stuff I'd rather not build from scratch but you can't exactly find in a hardware store. Any ideas?  (I know this is off the wall). Many thanks! - Tom

Posted by praxisaxis 5 years ago  |  last reply 5 years ago

### how to find an ible?

The other day i saw an ible that showed how to build an electrical timer, on-off deal. mechanical timer.  how the heck do i find it again?  thanks

Asked by clasof56 5 years ago  |  last reply 5 years ago

### Suggest a nice mechanical/robotics project.I am interesting in things like pipe climbing robot and stirling engines.

I need to do a project as a part of my curriculum .I am currently interested in things like pipe climbing robots and a fan which runs using laptop heat.( uses stirling engine ) .By the way the time line for proj is 1 year, and it needs to use low cost materials.

Asked by zakirs 9 years ago  |  last reply 8 years ago

### How do I determine the size of the blades/leaves on a mechanical iris?

Can someone please tell me? I want to know if it's a certain percentage of the base size depending on how many leaves I need and if so, what is the formula? thanks.

Asked by fwalker3 7 years ago  |  last reply 7 years ago

### child's DIY mechanical toy panel

Once upon a time I saw a panel that had a light switch, receptacle and plug, screen door hinge and latch and other things a child could do to keep busy and learn while they are playing. Do you have any ideas of things we could add to the panel. It will not be electrified but could have some battery operated things. Something that makes sounds would be nice too.  This child is two and seems very interested in stuff like this.

Posted by estherwaayenberg 1 year ago

### Artificial Intelligence VS Mechanical Engineering

This year I'll choose a study, and I'm still hesitating between Artificial Intelligence and Mechanical Engineering. Which one do you think is the best choice, and why?

Posted by merijnvw 9 years ago  |  last reply 9 years ago

### Can someone help me with my Veeder-Root electro-mechanical counter reset solenoid ?

I have an old Veeder-Root electro-mechanical counter.   The counter works on 12V but the solenoid for reset seems to need a totally different voltage.  I have gone up to 24v DC which is as high any of my power supply equipment can go with no luck.   In desperation I tried to throw 120VAC to it and it buzzes so I am thinking it needs 120VDC but I am not 100% sure the best and easiest way to get it there.  I am guessing some sort of bridge rectifier, any thoughts or ideas?  I am working on a sculpture that counting is part of the look but I would love to have a pushbutton control to reset the counter. There is no model number but the Form NO is 1 159196  ELC    12V DC

Asked by CharlesR88 2 years ago  |  last reply 2 years ago

### Any ideas for an "in mouth" voice mangler (NOT electronic)? Answered

I want to make scary inhuman sounds as part of a costume. So I can't hold things up to my face or use any electronics. Has anyone got any ideas? (Other than me ending up with a sore throat from screeching unnatural sounds.) I'm thinking of something like a whistle I can bite/hold with my lips and blow through but whistling isn't very scary and most whistles don't work in reverse. Or like when you trap a blade of grass taut in between your thumbs and blow, but would need to be "manufactured" so I don't need to hold my hands up.

Asked by max_allan 5 years ago  |  last reply 5 years ago

### Traditional pump car lever mechanism

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.

Posted by pinoymale 11 years ago  |  last reply 12 months ago

### Please explain Theo Jansen Mechanism?

We all have seen the Theo Jansen Machines and they are JUST AWESOME! I'm trying to build one. What is the the theory and mechanism behind Jansen's machines? Please explain. [Unicode Symbols for your convenience: Degree= ° , Half = ½ , Third = âï¿½ï¿½, Fourth = ¼, Three Fourth = ¾ , Integral = ∫ , Differential = ∂, Delta = Δ , Square = ² , Cube = ³ , Square root = √, Cube Root = âï¿½ï¿½, Infinity = ∞, sum = ∑ , Therefore = ∴, Because = âï¿½µ,]

Asked by sarveshk 7 years ago  |  last reply 5 years ago

### Clock mechanisms?and large clock hands?

I'm building a large wall clock using Numbers stuck to wall and bought 10 quartz clock mechanism's but not one can drive or strong enough to  to drive large clock hands,can anyone help ?where can I buy from

Asked by 2Y3RXJ82NBEVGGEPCK8FE3 2 years ago  |  last reply 2 years ago

Http://www.archive.org/search.php?query=boy%20mechanic%20AND%20mediatype%3Atexts the following is OCR text from the scanned book, the link above shows 3 items, books one and two, the first item, from Project Gutenberg is a duplicate of one or two, but not worth downloading. 700 projects, which can be updated to use modern materials and used as the basis of an Instructable. I guess from memory the book is from the 1930's as I have an original edition I bought second hand from a library in the '60s. Pcoject Gutenbenj's The Boy Hechanic: Volume i, by Populat Mechanics This eEoot is for the use of anyone anywhere at no cost and uith almost; no restrictions whatsoever. You may copy ^'^r give it auay oc re-use it under the terns of the Project Gutenberg License included uith this eBool! oc online at huh. gutenberg.net Title; The Boy Mechanic; Volume 1 700 Things For Boys To Do Author: Popular Mechanics

Posted by Lateral Thinker 9 years ago  |  last reply 3 years ago

### Mechanism for pouring exact amount of liquid?

I have a cylindrical container(around .75 liters) that is filled with water. I want to accurately pour a certain amount of water in a cup. How can that be done?? My idea (might be complete fail) : I put a hole at the bottom of the cylinder, and a door mechanism that opens and closes the hole. The door will be controlled by timing. So lets say i want to pour 50ml of water in a cup. Using some physics i can get the time needed for the water to freefall into the cup and i will open and close the door accordingly.  The idea sounds a bit cheesy so I wanted some opinions. Picture is attached. Some comments I would appreciate: 1. Is my door opening and closing mechanism a complete fail? A small motor will turn the pinion which will in turn move the rack horizontally opening and closing the door. Note that I want the door open/close mechanism to be as small as possible.  2.If the drink is not water, lets say orange juice or red bull, will the timing vary considerably? 3. Any ideas how to accomplish this in another way other than timing and opening closing a door? I want minimum complexity, and the amount poured doesn't have to be very exact, lets say within a 10% margin. (This is basically my question in the first 2 lines).  Note: At my disposal i have simple machining methods(lathe, milling, drilling, cutting), but nothing too fancy. I have sufficient knowledge of microcontrollers and electronics. Thanks in advance!! Chris

Asked by Chris414 5 years ago  |  last reply 5 years ago

### Mechanical parts for automated curtain control

Hi guys,I am building an automated curtain control, based on an ESP8266, to be controlled by the sun comming up (or going down) or by time or by smartphone. The electronics and software are all but complete, but I do have a problem...First, how can I open and close the curtains? I was thinking about a fishing wire in a loop, but how do I get enough traction from a pulley to move the curtains?Second, how can I make sure that the curtains can be opened and closed manualy, without frying the motor? Third, how do I detect the position of the curtain?Alex

Asked by alex452 2 months ago  |  last reply 2 months ago

### Amazing Wood Sculptures of Mechanical Items

Mike Rea makes amazing wooden sculptures of items that recreate the form and absolutely none of the function, but that doesn't stop them from being wonderful pieces to look at. Whether it's a set of musical instruments, a tank, a mech walker, or many other things, his work deserves a good look.Fecal Face (a great art site from SF) does a nice interview with loads of pics here.via Make

Posted by fungus amungus 10 years ago  |  last reply 10 years ago

### Alternative Clock-Mechanical

I need to build a device for a competition that can measure time acurate to the tenth of a second, but from its starting position it must be no more than 30cm in dimension, but can exceed that once it begins.  Even if you know of something that can do seconds that would be fantastic.  If you have any ideas or places to find plans please do tell.  IT CANNOT USE ELECTRICITY

Posted by danielsb7676 9 years ago  |  last reply 8 years ago

### Is anyone skilled in metallurgical engineering?

*Yes, I know, another question involving college and my future life.*I am kind of split between mechanical engineer and metallurgical engineer. They both have some great benefits and trades that I'd love to go into, but it's difficult deciding which would be better for me.I do aspire, no matter what field I go into, to weld and do other metalworking, although I don't just want to weld for people. I know it sounds weird, but I like to take the time to know about what I am working on, and not work at "face value", if you will.So, any mechanical or metallurgical engineers who want to try to sway me one way or another, please do so now. ;-) Thanks,Bran.

Posted by Bran 10 years ago  |  last reply 5 months ago