Places that 3d print and laser cut

So I'm gonna be getting a 3d printer and laser cutter soon (saving money for my wedding and honeymoon), but for now does anyone know places that will do 3d printing and laser cutting? And how much does it cost on average?

Topic by darrellacoustic   |  last reply


FSR - Conductive foam readings

Hello! I am making a prototype of a force sensitive resistor, and i am using, to old 97%kobber coins, metal sheet and a tiny piece of conductive foam that i got from a tv-repair shop. The setup is not very good, but its a start, and i am planning the next move for better results... Now... I want some decent understanding of how the readings work, and why I get these results.. First test, are written with black, and and as you can see it, has the same amount of space between 0-1kg and 1-2kg, but 2-3 and 3-4 changes to a very small space? Why is that? Second question is, that i have used the x10, to read larger forces. 0-2,5kg and 2,5-5kg has same amount of space. Will the space decrease too, when getting further up the scale too?  - I know the conductive foam has its limits too, but just to be clear of my readings. Thanks in advance! I hope you can see the readings on the picture..!

Topic by L33boy   |  last reply


SCR latching circuits and LEDs

LEDs and I just can get along...In another project I had a solenoid blowing out LEDs. Now this: I have a number of switches hooked up so they trigger an SCR latching circuit to turn on (and keep on) some LEDs. The SCRs are wired in parallel to each other and have a 1K resistor on the gate. Power is applied to the whole circuit via a timer relay (not hooked to the SCRs). The power is a 12v, 200mA wall wart. And the SCRs I'm using are NTE 5465. The LEDs last a while but burn out or go to a weird blinking state (when the switch is depressed) after about 2-3 days. In my previous project I needed a diode to help with the solenoid voltage spike. But I don't think that it is the case for this project since the SCRs aren't inductive. Do LEDs connected to the switch part of a relay need a diode too? The LED package I'm using is purchased from Happ Controls (see hideous grainy picture). It's rated for 12V but they can't give me a mA rating on them. But they say that no inline resistor is required. Any thoughts? I think this is another case of my inexperience causing me to overlook the obvious.

Topic by robotninjasquid   |  last reply


How to Fix a Broken Pipe Inside a Wall

Here's a quick photo-essay about my Sunday afternoon: An outside hose bibb was leaking around the handle, so I decided to replace it. * I couldn't remove the old hose bibb from a piece of galvanized pipe, so I removed the pipe too, and found what looked like a brass fitting inside the wall. * Once I had installed a new length of pipe and hose bibb, I turned the house water back on, and heard it leaking inside the wall. Thinking I hadn't tightened it enough, I really beared down and gave the bibb/pipe combo a good crank to seal the connection in the wall. That's when I felt a pipe inside the wall break, and heard water start blasting inside the wall. *Fortunately, I have access to the other side of the wall through the garage, so I cut a hole and installed a valve upstream of the break. I didn't have time to do a full repair and re-route the pipe outside, so that's where I've left it for now. It took three separate trips to Home Depot -- represented above by *'s -- which seems about average for me and plumbing disasters. Things I could have learned: try to remove the broken item before going to get parts. That would have saved one trip to get the additional length of pipe. I don't think I've ever soldered copper pipes in a non-emergency setting. Last time, our hot water heater failed the day before my parents arrived for a week's stay. If you'd like to do your own plumbing, I strongly recommend learning to solder on a project that doesn't require the water to the entire house to be off.Thanks to zachninme for taking photos!2008-08-31 Update: Since I know everyone is dying to know how this turned out, I've add a few more pictures. With the right tools and parts in hand, I replaced everything from the broken copper pipe out to the hose bid, and removed the valve inside the wall. The tricky part was mounting a brass 1/2 NPT female to copper 1/2 elbow. Originally, this piece was nailed into a stud and then the copper was soldered on before the walls were finished. I didn't want to make a big hole in the stucco on the exterior wall and I couldn't safely get my torch into the confined space, so I soldered some copper elbows onto this brass elbow and then mounted it with machine screws coming in from behind through the stud (screw heads on the inside where I could access them through the hole in the drywall, and bolts on the other side with the brass elbow where I positioned and tightened them by feel).Having opened a plumbing battle on this front, I decided to fix a bunch of other plumbing problems around the house, which I'll write about shortly in an Instructable.

Topic by ewilhelm   |  last reply


Rotary switch w/ direction based contacts??

I'm looking for a specific type of switch... I believe that it must exist, but I have never seen it... I need a rotary switch, where each clockwise "click" (partial turn) makes one circuit momentarily, and each counter-clockwise turn makes a different momentary conection... example with two light bulbs ( L1 and L2 ) connected to each direction of travel, respectively: If you rotate the knob one "click" (say 15 degrees) clockwise, L1 flashes for a moment, as the knob is in motion. if you continue clockwise, L1 will flash at each "click". If you rotate the knob one "click" counter-clockwise, L2 flashes for a moment. if you continue counter-clockwise, L2 will flash at each "click". There is no center-point, so any clockwise travel corresponds to L1, and any counter-clockwise travel corresponds to L2. does anyone know where I could get a couple of these??

Topic by gschoppe   |  last reply


Free 3 Month Pro Membership

Want a FREE 3 Month Pro Membership? Just post a link to your best Instructable and if you're not a pro already, it could be you! And when I say "your best instructable," I don't mean your favorite. I mean an instructable that you actually wrote yourself. Also let me know the reason you should win this! Do check out my Instructables!!

Topic by Jonathanrjpereira   |  last reply


Instructables Impostor Website

So, I was searching for my instructables name, and a weird site called "Rissing.com" cam up, with my instructable and many others. I doubt that it is a legit site, and I thought you guys might want to know about it. http://tetractinose2.rssing.com/chan-1534415/latest.php  I would not recommend going to the site, who knows what malware awaits?

Topic by CorgiCritter   |  last reply


All Pictures not showing

None of my pictures appear when I enter as myself When I enter as not logged in , everything works fine When I enter in a Tor browser everything works fine This tells me that images are being actively blocked to my IP Why is that ? If you are trying to teach me a lesson then please say so not hide behind the door and throw s**t like cowards The operating system and browser are irrelevant as this is IP specific

Topic by tytower   |  last reply


I'm having troubles logging in and downloading PDF files

I've already payed for a "Pro member" but I can not log in nor download any PDF files. I've tried the "right clicking my mouse and choosing 'Save Link As...' " but nothing happens! I already sent a couple of e-mails to support@instructables.com 2 days ago but I got no response from them. Any advice? Thanks in advance, Gildardo

Topic by Gildardo   |  last reply


The Reactable - A collaborative electronic music instrument

I was watching current earlier on and found this pod:The reactable is a collaborative electronic music instrument with a tabletop tangible multi-touch interface. Several simultaneous performers share complete control over the instrument by moving and rotating physical objects on a luminous round table surface. By moving and relating these objects, representing components of a classic modular synthesizer, users can create complex and dynamic sonic topologies, with generators, filters and modulators, in a kind of tangible modular synthesizer or graspable flow-controlled programming language.The video won't embed, but it's pretty awesome: Current PodThe project's official website is here.The software is open source, although I can't see many details of the hardware.

Topic by whatsisface   |  last reply


Introducing Myself

Hi Everyone,Just joined the Forum. My name is Atiqur Sumon and I live in Nottingham in United Kingdom. I am a Graphic Designer and my main work clipping path service, Image Masking, Photoshop Retouching, Photo Editing, and Image shading other Image Manipulation works.

Topic by sumoncps   |  last reply


how to create a favicon.ico

HOw can I create favicon.ico for my website

Topic by hsent23   |  last reply


How do I add 3d models to my instructable?

I recently used tinkercad to complete a project and I was trying, unsuccessfully, to add the basic 3d model to the instructable. Any help is welcomed. I don't want to, but I will if I have to, just take screenshots and post those. Again thank you.

Topic by knexinventer   |  last reply


Sponsored vs. Prizes Provided

I noticed there's new terminology being used on contests with sponsors. The Burn it contest and previous contests say they are "sponsored by," but all the current contests say "prizes provided by." Is this a clue that perhaps the sponsor has less input and those contests will close on the regular schedule, or does it not really mean anything?

Topic by Brooklyntonia   |  last reply


Knex gun ideas

Knex Gun Ideas Hello fellow Knexers, I have some ideas and concepts that I have been thinking about and I would like to share them with you all.  Please give me credit if you use any of these ideas of mine.  Also please send me pictures if you are able to create any of these ideas so that we can all help to advance the Knex community.  I know that some of you may have thought of  ideas kind of  like this, so please don't get all bent out of shape that I stole one of your ideas. And please give me your feedback and and ideas in the comments below. 1 Horizontal Knex Oodammo mag     This is an idea that I came up with the other day ago, it could either be on the top or the bottom of     the gun.  First there would be a rail that holds the ammo on top and pushes it down a ramp and then     it falls in front of the FP  and is shot out.  This may have an advantage because then you don't have a                     large mag sticking out of the bottom of your gun. 2  Oodammo bull-pup    I do not see a big advantage to this but maybe some one would like to try this,  Has any one tried             this before? 3 Rotating hammer action   There would be 4 hammers attached to a cog and the hammers would spin around in a circular          motion and hit a new piece of ammo each time they spin around.  I don't think that you could get that      much power with this, but maybe it could be attached to a motor or it could be wound up and released     by the trigger.     4 Knex magazine idea      I was watching some YouTube videos about Nerf guns and there was this one that I saw, is there a      way to make something like this out of Knex?  To load the gun you slide back the pullback and load          ammo though the top into the magazine, this is not a top loading mag but you feed the ammo into the      mag from the top and it is pushed up when you slide the pullback back over the top of the gun.    Here is a link to a video about the gun so you get the idea of how it works    http://https://www.youtube.com/watch?v=cjpkp9TRDWo    I will be posting more new ideas here soon so come back often to see updates and more, and please subscribe and share your ideas    below so that we can advance the Knex community to the Next level of innovation, design, comfort and power!    If you have a question or don't understand one of these ideas,  please just ask me below.    Thanks for your ideas and feedback!!    SONIC BROOM

Topic by sonic broom   |  last reply


I need help with this code

Hello, I'm creating a PIR Sensor Alarm with Arduino. I'm using Arduino Uno, PIR Sensor, Breadboard, LED, Piezo Buzzer, TTL JPEG Camera, SD Card and SD Card Module (Breakout Board) I tested my code and it didn't give me any errors. However, the LED and the Buzzer are on all the time, my idea is to have them on once the PIR Sensor detects motions. I know that I'm having problem with the code. Therefore, I'd appreciate it so much if someone could find out which parts of my code should I change. ---------------------------- #include #include #include int pirPin = 7; int ledPin = 8;                // choose the pin for the LED int pinSpeaker = 10;           //Set up a speaker on a PWM pin (digital 9, 10, or 11) int minSecsBetweenEmails = 60; // 1 min long lastSend = -minSecsBetweenEmails * 1000l; byte ZERO = 0x00; byte incomingbyte; SoftwareSerial mySerial(2,3);          // Set Arduino pin 2 and 3 as softserial long int a=0x0000,j=0,k=0,count=0,i=0; uint8_t MH,ML; boolean EndFlag=0; File  myFile; void SendResetCmd(); void SetBaudRateCmd(); void SetImageSizeCmd(); void SendTakePhotoCmd(); void SendReadDataCmd(); void StopTakePhotoCmd(); void setup() {   pinMode(pirPin, INPUT);   pinMode(ledPin, OUTPUT);      // declare LED as output   pinMode(pinSpeaker, OUTPUT);   Serial.begin(9600);   Serial.begin(115200); while (!Serial) { ; // wait for serial port to connect. Needed for Leonardo only } mySerial.begin(38400); Serial.print("Initializing SD card..."); // On the Ethernet Shield, CS is pin 4. It's set as an output by default. // Note that even if it's not used as the CS pin, the hardware SS pin // (10 on most Arduino boards, 53 on the Mega) must be left as an output // or the SD library functions will not work. pinMode(10, OUTPUT); if (!SD.begin(10)) { Serial.println("initialization failed!"); return; } Serial.println("initialization done."); } void loop() {   long now = millis();   if (digitalRead(pirPin) == HIGH)   {     digitalWrite(ledPin, HIGH);  // turn LED ON     playTone(300, 160);     delay(150);     if (now > (lastSend + minSecsBetweenEmails * 1000l))     {       Serial.println("MOVEMENT");       lastSend = now;     }     else     {       digitalWrite(ledPin, LOW); // turn LED OFF       playTone(0, 0);       delay(300);         Serial.println("Too soon");     }   }   delay(300); } // duration in mSecs, frequency in hertz void playTone(long duration, int freq) {     duration *= 1000;     int period = (1.0 / freq) * 1000000;     long elapsed_time = 0;     while (elapsed_time < duration) {         digitalWrite(pinSpeaker,HIGH);         delayMicroseconds(period / 2);         digitalWrite(pinSpeaker, LOW);         delayMicroseconds(period / 2);         elapsed_time += (period);     } byte a[32]; int ii; SendResetCmd(); delay(4000);                            //Wait 2-3 second to send take picture command SendTakePhotoCmd(); while(mySerial.available()>0) {   incomingbyte=mySerial.read(); } myFile = SD.open("pic.jpg", FILE_WRITE); //The file name should not be too long while(!EndFlag) {   j=0;   k=0;   count=0;   SendReadDataCmd();   delay(200); //250 for regular   while(mySerial.available()>0)   {      incomingbyte=mySerial.read();     k++;     if((k>5)&&(j<32)&&(!EndFlag))     {      a[j]=incomingbyte;      if((a[j-1]==0xFF)&&(a[j]==0xD9))     //tell if the picture is finished      EndFlag=1;      j++;     count++;     }   } for(j=0;j { if(a[j]<0x10) Serial.print("0"); Serial.print(a[j],HEX);           // observe the image through serial port Serial.print(" "); } for(ii=0; ii myFile.write(a[ii]); Serial.println(); i++; } myFile.close(); Serial.print("Finished writing data to file"); while(1); } void SendResetCmd() { mySerial.write(0x56); mySerial.write(ZERO); mySerial.write(0x26); mySerial.write(ZERO); } void SetImageSizeCmd() { mySerial.write(0x56); mySerial.write(ZERO); mySerial.write(0x31); mySerial.write(0x05); mySerial.write(0x04); mySerial.write(0x01); mySerial.write(ZERO); mySerial.write(0x19); mySerial.write(0x11); } void SetBaudRateCmd() { mySerial.write(0x56); mySerial.write(ZERO); mySerial.write(0x24); mySerial.write(0x03); mySerial.write(0x01); mySerial.write(0x2A); mySerial.write(0xC8); } void SendTakePhotoCmd() { mySerial.write(0x56); mySerial.write(ZERO); mySerial.write(0x36); mySerial.write(0x01); mySerial.write(ZERO); } void SendReadDataCmd() { MH=a/0x100; ML=a%0x100; mySerial.write(0x56); mySerial.write(ZERO); mySerial.write(0x32); mySerial.write(0x0c); mySerial.write(ZERO); mySerial.write(0x0a); mySerial.write(ZERO); mySerial.write(ZERO); mySerial.write(MH); mySerial.write(ML); mySerial.write(ZERO); mySerial.write(ZERO); mySerial.write(ZERO); mySerial.write(0x20); mySerial.write(ZERO); mySerial.write(0x0a); a+=0x20; } void StopTakePhotoCmd() { mySerial.write(0x56); mySerial.write(ZERO); mySerial.write(0x36); mySerial.write(0x01); mySerial.write(0x03); } --------------------------- Thanks a lot!

Topic by fhussein1   |  last reply


Won't save embedded video

When I save my article, the embedded videos disappear.  They aren't saving for some reason. Is there a glitch with the site today? I'm using Safari on iMac.  I've tried closing and re-opeing my browser.  Tried re-starting the computer.  I've even tried starting a new instructable, but it's the same problem. Never had this problem before, so thinking it's a bug? Is anyone having the same issue today?

Topic by The King of Random   |  last reply


Draft instructable preview broken.

Ok Ive got 2 issues here first when I look at the draft instructable, either in the preview mode or by clicking on in in draft, I cannot click on the photos to proof read the notes, or get an idea of how that step will look.  The next issue is, i used to able to sent the preview link to a friend, so they could also proof read it and give me feed back, that now doesn't work either. Anyone else have this problem?

Topic by liquidhandwash   |  last reply


Doll Crafting

I'm the founder of the Lammily line of dolls which promote realistic beauty standards. I'm looking for a creative person who can make doll crafting videos like in the example below: https://www.youtube.com/watch?v=kdVSXVtDoaA If you're crafty, creative, and think you can make videos like this, please let me know! My email is nickolaylamm@gmail.com. The videos can be very wild, such as "How to Make a Doll Moon Landing".

Topic by NickolayL 


Need Data Sheet for old diode laser. RCA SG2001

I have been digging though my assortment of electronic components, stuff that has gathered dust for years.  One item I came across still new in the original package is a laser diode.  RCA # SG 2001.  I have tried searching internet with out much luck other than a PDF about how to drive the diode.  ( short pulses high current ) I see the same part number referenced for other products.  I did find it listed but there is no data showing that I can find.  Yea...it is over 30 years old !  No reason not to know what it is or what it could be used for, perhaps for the pocket engraver? Would much appreciate any information anyone may have about this chip.  I believe it is fairly high power IR diode.   It is stud mount with a single lead exiting the center of the stud bolt.  A bit less than 1/4" dia case.

Topic by stuffdone   |  last reply


having trouble inserting a youtube video to a instructable.

 Has anything changed when adding a video to a instructable ? i click on the little link icon and it asks for the url . I do it and it doesnt show up..

Topic by coolbeansbaby68   |  last reply


Missing a charger for a Rockwell Shopseries cordless drill - charger RS2800K

Can any body help? I inherited the Rockwell with 2 batteries but no charger. Does anyone know where I can find one or make one. It is  18V with 3 pins:  a + and a - on one side and a - pin on the other. Have contacted Rockwell and searched the net but unable to locate.

Topic by ZenatheKat   |  last reply


A new folding door I just saw on facebook

I would love to see someone build this door.  I believe it is beyond my capabilities   http://www.viralnova.com/folding-evolution-door/

Topic by paqrat   |  last reply


Timestamps and where replies end up, is there a fix coming?

I think I've asked this before but anyway.... Take a look here as a recent example: https://www.instructables.com/community/The-greatest-website-besides-instructables/ At the time of posting this the list showed the last comment was made 33 minutes ago. When I check the topic it starts with 4 entries being 6 years old. Than one 38 minutes ago followed by an endless list of year old replies and a reply that is 42 minutes old. I do understand that it is vital to make a reply to a specific comment but I fail to see the logic behind the sorting. Even when making a direct reply to the topic it often ends up far behind older ones for no reason that I can see. The longer (or older) a topic becomes the harder it is to actually follow what is going on in there and to find those replies that are relevant to something. This can be found in many topics where replies that are months old are followed by those that are a few days or hours old, often completely destroying any relation to another. I see no sorting options for this... Quite a few replies get lost this way as not everyone is checking long topics for every reply, trying to find out what was posted when. To put it simple: It is chaotic... Is there any chance to see something done about it in the near future? Something simple like: You make a new comment and it goes on top of the list, you reply to another comment and it is quoted and also goes to the top of the list. This way one could see what is new and what reply is related to another reply. I might be spoiled by forums but certainly you can improve here !?

Topic by Downunder35m   |  last reply


Tumblr: Hit 30,000 Followers!

Tumblr Gif for everyone!

Topic by Penolopy Bulnick   |  last reply


The greatest website besides instructables!!!!!!!!!!!!!

Ok, so i found this hilarious site. at first it seems like a normal site, but once it loads, you'll see how awesome it is... Awesome site

Topic by AnarchistAsian   |  last reply


There is no "Everything" category on the Homepage?

Hey instructables, just wanted to let you know, there are two technology headings and no Everything heading on the homepage. 

Topic by Cbamford   |  last reply


K'nex Innovators Contest: discontinued until further notice

Can't be bothered to keep this contest going. If anyone else wants to run it or create their own, go for it. ~Point board~ Waffleman - 10 Kinetic - 9 Jollex - 4 Arjun - 3 Sharir - 3

Topic by TheDunkis   |  last reply


I am a pro member and today I started getting Ads in my drafts?

I am a pro member and today I started getting Ads in my drafts.

Topic by JRV31   |  last reply


The science behind this self watering system for plants

Hi, I was watching a video for a self watering system for plants (link below), and was wondering what the science behind it is called. I also had a problem where no water came out of the bottle because the hole I made at the bottom was too small. As soon as I unscrewed the cap a little, the water came gushing out. https://www.youtube.com/watch?v=Ffe7JfYyBFE Thanks :)

Topic by horsebones   |  last reply


Double Text "Technology"

I guess the picture shows the bug quiet good, cleared cache and user data, should not be client side. Anyway my favourite category doubled \o/

Topic by Jan_Henrik 


instructables.com: can't login to the site using IE10

There is an issue where IE10 and above users cannot log in to instructables.com, due to the cache headers sent to IE with the URL redirection response. To reproduce, simply navigate to www.instructables.com/id/edit and attempt to log in using IE10. Notice nothing happens upon submitting credentials. The issue is upon redirection to www.instructables.com/account/login?nxtPgName=/id/edit&nxtPg;=/id/edit. This redirection response is sometimes sent with a Cache Header, ( with Cache-control:private, max-age:86400) and sometimes is sent with Cache-control:no-cache, in which case it works correctly. So wininet caches it, since in urlmon we set INTERNET_OPTION-ENABLE_REDIRECT_CACHE_READ. Now, when we enter credentials and login, we again try to get to www.instructables.com/id/edit with the right cookies. But since we have cached the redirect, instead of resending HTTP request we again end up on the login page.  

Topic by IECompat 


Type of diode

Hey everyone, I recently had an ASUS laptop to repair and after troubleshooting, found some damaged components among which is this surface mount diode (kindly see picture). I looked around for a datasheet but cannot find anything. Am also unable to find out exactly what type of diode it is from its code marking. I've had results varying from a 'leakage diode' to '3.3V zener diode'. However, I am suspecting it might be a schottky diode since it was in what looks like a boost circuit. Any help would be greatly appreciated. Code marking: 100 98FP1  j Thanking everyone in anticipation. Kind Regards, Nawaz

Topic by Nawaz   |  last reply


May 2015 Build Night with Raspberry Pi and Adafruit

#BUILDNIGHT 20 SPACES AVAILABLE Deadline to sign up: March 20, 2015. Accepted spaces will be notified by March 23, 2015. Read our FAQ to learn more about the Build Night program rules and how to make the most out of this event for your space. May BUILD NIGHT We are partnering with Raspberry Pi and Adafruit, DIY kits and products, for our May 2015 build night. Sign up to participate in the build night and we will ship you a package that includes the following: (5) Raspberry Pis (5) Power supplies (5) microSD cards (5) Adafruit Perma-Proto HAT for Pi Mini Kit (2) Adafruit Pi T-Cobbler Plus Kits HOW TO PARTICIPATE: Host a Build Night: pick a time in May to host a project build night using the Raspberry Pi boards + Adafruit accessories. You can host multiple build nights during May to work on your projects. Post 2 Instructables: post 2 Instructables using the boards + accessories. Not posting these Instructables will affect your chances to participate in future build nights. Brownie Points (not required): after the build night post a forum topic on Instructables about your event. Include pictures, stories, etc... Here are two examples from past build nights: Noisebridge and Makers Local 256. We may even feature your photos on the homepage. REWARDS: If your submitted Instructable for this event gets featured by one of our editors we will send you an Instructables Prize Pack which includes: Instructables t-shirt, stickers, and patches. This forum post has guidelines for posting feature worthy projects. Be sure to let people at your event know so they can win a prize pack! Limit 3 per makerspace. RESOURCES: Raspberry Pi Resources Adafruit Resources Instructables App (for documentation during the build night): iOS and Android REACH OUT TO US ON SOCIAL MEDIA #BUILDNIGHT #INSTRUCTABLES #RASPBERRYPI #ADAFRUIT Twitter: @Instructables, @Raspberry_Pi, @adafruit Instagram: @Instructables, @adafruit https://www.facebook.com/adafruitindustries https://www.facebook.com/instructables SIGN UP: Fill out this google form

Topic by Carleyy   |  last reply


best bullpup knex gun?

I would like to make a bullpup knex gun with little or no cut parts  what is the best one to get a hang of the bullpup mech?  Thanks Sonic Broom 

Topic by sonic broom   |  last reply


Collections? Favorites? Shortcuts?

I have just started getting involved with this site, and I noticed I could put an Instructable project in a "collection" or I could mark it a "favorite".  I decided to try putting the two related Instructables I was looking at into a Collection for myself, just to be able to find them again. It says I have a "draft" that is not "published".  Perhaps I am not understanding the purpose of Collections.  Are they something that others are supposed to look at and find useful somehow?  What exactly is the intended purpose of this function? Should I just have marked the two Instructables "favorite"?  There are also "shortcuts"?  These were both electronics related, and decided I might conceivably also find myself wanting to save food or woodworking Instructables as well, and I thought it might be nice to be able to sort them, so I used the "collection" function instead.  Do I have to eventually publish these?  Can i just have a bunch of personal collections to sort things I want to be able to find again?  I guess I could have just bookmarked them in my browser too... I really couldn't find any information on the site about what Collections are supposed to be or be for.  Is there a guide to how to use this site? Input or informational links from the community are appreciated. Thanks!  Alison

Topic by overboardgirl   |  last reply


pipe suppliers for color anodized finish?

Anyone have a go-to site for listings of pipe/tube suppliers that offer the product with anodized color finishes? My searches aren't yielding much. TiA...

Topic by valrith   |  last reply


How can I turn pnuematic muscles into hydraulic muscles?

Hi everyone, thanks for taking the time to read this Recently I've become interested in these pnuematic muscles: https://www.instructables.com/id/How-to-make-air-muscles!/ I wondered if it would be possible, and what sort of pump I'd have to use. I wanted to make the pump fill the muscles as fast as they can, and I wanted it to be fairly portable (running off 12 volts or something).  Thanks for your answers!

Topic by WarrenP2   |  last reply


Wanting to make a switchable IR night light

Every night I come home, I have to open my garage door manually and park my motorcycle. When the garage closes, its dark and I tend to bump into my cycles exhaust burning myself. Yeah pretty funny. Anyways I had an idea, since I already had an arduino uno board and an IR Sensor and emitter, I wanted to make a trigger-able light switch. But I wanted my IR reader to run on AC, like a night light. At the press of a button from my emitter, the IR would pick up the codes and my light would turn on. Is this possible? Some people say, just buy a motion sensor and plug it in, I say i'll just salvage it for parts and try to make my own. Whats the fun in buying it, when I could build it with parts I already have. I mean, I know AC is dangerous, if not viable, then I could resort to a 9v with a power capacitor so long as it doesn't drain my 9v instantly.

Topic by bprins   |  last reply


Widescreen Formating

It just occurred to me that the format of the new editor causes there to be a disconnect between the images and the text. Often I'm having to scroll up and down repeatedly to see the image the text is referring to. The format of the editor is predominantly vertical while screens are predominantly horizontal/widescreen (or can be turned). What if the text in an ible was next to the images instead of below? See the image for precisely what I mean. 

Topic by Brooklyntonia   |  last reply


Airsoft

Post the best instructables about airsoft here, discussions are encouraged.

Topic by cdillon5   |  last reply


Copper flute?

I live in estonia. No bamboos here. So I was thinking to use copper tube. I find this http://www.aflauta.com.br/hist/bamboo.pdf Problem is inside diameter and wall thickness. If i'm getting it right for every key is right inside diameter and lenght  I can buy straight copper tubes/pipes: 15mm(outside diameter) x 1,05mm(Wall thickness)  1,05x2=2.1mm 15-2.1=12.9mm(inside diameter) 18 x 1,0 1,0x2=2 18-2=16  12 x 1,0  1,0x2=2 12-2=10   10 x 0,8 2x0,8=1,6 10-1,6=8,4 Whats the best? I was thinking to use 15mm and 18mm tube 18mm for key a 15mm for key d I ended up with 15x1,05 copper tube. Thinking how to use this: http://11wall-west.com/~ph_kosel/flutomat.html If I use this measures http://www.phy.mtu.edu/~suits/pvcflute.html I get 7.2mm for blow hole and 6mm for finger hole. My tube I.D is 12.9 Is there any flute calculator that calculates hole sizes for right key? I am also thankful for any flute related help what helps me to make copper flute.

Topic by DeathSuperMario   |  last reply


Is there a Maker project bigger than this?

I've just come across an incredible engineering project - workshops around the UK are working together to build a brand new Patriot Class steam loco, from scratch. They're working to keep it as close to the original design from between the Wars as modern laws and bridge-heights allow. Why is this project important?  The Patriot class was named and created in honour of the railway employees who fell in the Great War.  The class became very successful, but, unfortunately, every example was scrapped in the change from steam to diesel. This project will be an engine that will be a National Memorial, and is being backed by the Royal British Legion, and the aim is to get the loco finished and certified for main-line running by the centenary of the Armistice in 2018. To find out more, visit their website (below), and share the project with as many people as you can. http://www.lms-patriot.org.uk/

Topic by Kiteman 


How to use whatsapp in your pc

Its do now very easy you open this https://web.whatsapp.com/ 

Topic by spellsandastrology   |  last reply


Please Help Electrical question 12v LED wiring.

So I have a black wire and a white wire coming in to where I have to hook up this LED transformer I know this is 110v. I saw the circuit breaker and it was double pole so I assumed it would be a 220v I ordered a transformer that could handle 110 and 220 but the colors are different. Is the transformer shown meant to have input wires connected to the hot? which ones to I put where? What goes to white here and what goes to black?

Topic by seanrforrest   |  last reply


Physics question has me stumped

A large crate sits on a pickup truck which has coefficients of friction mu(s) =0.6 and mu(k) =0.4 . My question is how do I calculate the impact velocity if the truck accelerates (-8.0 m/s^2) and the crate slides forward 1.5 m to impact the back of the truck? Can anyone please walk me through this problem whenever you get the chance? Thank you. 

Topic by GThreep 


Help me thunderclap!

Hey Everybody,  I've been humbled and surprised by all the support I've gotten on my Gravity Hook project. I'm trying something new to spread the word and I'm asking for your help to share it.   Thunderclap is a website where people come together to get the word out. Here's how it works. You visit a project and support it by clicking on buttons marked "facebook", "twitter", or "tumblr". On a certain date (March 18th in this case) the post goes out all at once.     Help me spread the word by visiting the project at http://thndr.it/1wwiz2j . Thanks! Brent  

Topic by Mrballeng   |  last reply


guide to k'nex ball machine elements

Hi there! I noticed how hard it is to find elements for your k'nex ball machine. So I decided to make a guide so you don't have to waste time searching for elements! So, if you have made a ball machine with new elements, please tell me and either post a link or attach photos so I can add them to a future instructable!     K'nexers who have given me permission to do this with their elements:       Sandroknexmaster

Topic by www139   |  last reply


What's the best money currency to use in my Instuctables?

Hi everybody! I am working on an Instructables right now and I was wondering what money currency to use in the part list. I live in Canada, should I use CAD or USD?

Topic by Electrospark   |  last reply


FireWood Splitting--easy

I'm thinkin of puttin together one o these. Think I'll go with counterweight instead of spring. Even the counterweight will act toward more momentum, assuming the fulcrum is sufficiently anchored.   Post by Samanyoluhaber.com.

Topic by Toga_Dan   |  last reply