Instructables: question - workshop Sat, 10 Dec 2016 04:07:28 PST BLOX v1.01 How can a rocket using liquid hydrogen and oxygen force a rocket upwards? StarTrekC If hydrogen and oxygen are burned together they produce water.  You need a lot of hydrogen and oxygen to make a very small amount of water. If when burning those two gases together produces water, which takes up much less space, how can it possibly propel a rocket into space. You need expanding gase...
By: StarTrekC

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Fri, 9 Dec 2016 11:52:02 PST
I need to be able to see the charge level of a 6v rechargeable battery and want it to be as simple as possible? HariK38 I need to be able to see the charge level of a 6v rechargeable battery and want it to be as simple as possible?
By: HariK38

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Fri, 9 Dec 2016 02:37:47 PST
how/where can I buy natural rubber latex? Jimmy Ewin Preferably not coagulated, and in quantities under a metric ton. 
By: Jimmy Ewin

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Thu, 8 Dec 2016 14:44:03 PST
How do I connect a little speaker to an audio jack? AlexB492 I got a speaker from a toy( that used batteries) and I want to connect it to some old headphones cable. Do I need to do a circuit with batteries? The audio jack got 4 thin wires (1 blue 1 green 1 red and 1 yellow)? In which order do i need to connect it?
By: AlexB492

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Tue, 6 Dec 2016 07:50:24 PST
Limiting current? MatthewSternbauer Good day, I am interested in an effective way of limiting current for a TEC application. This application involves using the TEC's (12V @ 1A) to reduce the incoming air temperature in a noise isolating enclosure from ambient temp to about  5-10 deg C cooler. In doing some research on implementing t...
By: MatthewSternbauer

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Tue, 6 Dec 2016 07:12:24 PST
My voice control toy car is not moving VinodC13 My voice control toy car is not moving. But by voice command it is performing action like light on and off, it is also making sound according to command but wheel are not moving. Can anybody help me how can I repair it ?
By: VinodC13

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Tue, 6 Dec 2016 03:03:14 PST
I have a 120 >12 volt power supply and would like to be able to adjust the out-put for use in foam cutting dogscatsand9752 120volt ac 12 volt dc that I would like to regulate tho output as a variable instead of  fixed 3-5-12 volt 
By: dogscatsand9752

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Tue, 6 Dec 2016 00:33:26 PST
would this heater in my sheds future false ceiling be a good idea? cyberraxx I've come up with an idea for a heater in my sheds future false ceiling. Its basically a wooden box with an unmodified hairdryer attached and four PC fans blowing the warm air down each of the 4 clothes dryer hoses to vents roughly at floor level. I've seen one ibble where the heating element and m...
By: cyberraxx

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Mon, 5 Dec 2016 09:30:31 PST
How to reduce the viscosity of Silicone caulk without weakening adhesion property? abuhafss I am looking to screen some patterns with silicone on different surfaces like hardboard, MDF, carboard etc. For that I diluted Silicone caulk with Xylene and added some normal oil paint. I was able to get positive result except that the dilution weakened the adhesion property of the silicone which u...
By: abuhafss

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Tue, 29 Nov 2016 06:51:12 PST
Can a felon be a gunsmith? onrust Can a person with a felonious background become a gunsmith?  They do not have to own guns, nor possess, just repair.
By: onrust

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Sat, 26 Nov 2016 11:23:06 PST
Fixing a leak in a bike pump YousufS2 Hi All,  I have a floor bicycle pump like this ( which lately developed a leak in the center tube at the bottom. It is apparently caused by bad positioning while pumping air. I have located the hole which ...
By: YousufS2

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Tue, 22 Nov 2016 07:25:43 PST
Solvent that 100% dissolves gorilla glue? need castable material to chemically to "burn out" for a ceramic shell casting sk8er6 Hello. I am working on doing an aluminium lost foam casting of a small part. I read although hazardous, some had gotten successful results from using polyurethane foam (great stuff) in a mold, and proceeding as usual. I don't normally use great stuff, so I mixed gorilla glue with 1/3 water, stirred ...
By: sk8er6

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Tue, 22 Nov 2016 00:07:25 PST
A way to Make Silicone Softer more like rubber? Mohali26 I am trying to make a suture pad for my practice, and reason why i can't buy it is because i need a bigger size, a size that will make me pay hundreds of dollars to get hold of , if i can. so i figured why not try make one yourself, So i went to the hardware store and bought 100% silicone caulk, and...
By: Mohali26

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Sun, 20 Nov 2016 17:27:43 PST
What's the difference between an Instructables "Contest" and a "Challenge"? Ethan1023
By: Ethan1023

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Sun, 20 Nov 2016 17:16:06 PST
Weak spark (orange glow) on late model pickup truck Wired_Mist So  I have a 95 chevy C-1500 5.7 V8, Been having some progressively worse problems with it running rough and hesitating when accelerating. I will be re-timing it soon but that is a separate issue for the moment, When I tested the ignition system I noticed the spark tester was glowing orange/red in...
By: Wired_Mist

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Sun, 20 Nov 2016 16:31:40 PST
Which components and soldered to which? Johnieahenderson I have bought an assortment of resistors and capacitors and circuit board s, but how to make Circuit board I need to make a circuit board for a project. It is all 12vdc, I have a 1a fan and a 6a thermoelectric device one setting 1, plus another 6a on setting 2, and a 3rd on setting 3 So 1 is 7a 2 ...
By: Johnieahenderson

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Sun, 20 Nov 2016 05:35:12 PST
50-45V 1200mA Ac to 12V 1000ma valexandru1 Hey. So i have this led light panel which was damaged by some water that leaked through my ceiling from heavy rain.My dad wanted me to try repair it(he didn't want to spend another 100$ to buy a new one) so i did and i found in that the led panel has 4 strips of ca 70 leds each 1 m length each, powe...
By: valexandru1

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Sat, 19 Nov 2016 19:38:33 PST
Desk chair with bicycle shock? GeorgeK31 Can it be done? I want the shock to be used for the tilt back mechanism. Any suggestions on how it can be accomplished?   I want it to be suitable for up to 150kg (currently I'm at 100, and I'm trying to shed some weight. Thank you all in advance 
By: GeorgeK31

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Sat, 19 Nov 2016 08:25:01 PST
possible ac motor generator? builditbigger anybody tried machining strong magnets into the armature of say 10 or 20 hp 3 phase motor. do not  know the output if any but if so then running through a transformer that might have output  of  220 that is actually useable for living, working in a garage. i understand it would have to be overdriven...
By: builditbigger

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Wed, 16 Nov 2016 18:15:33 PST
how can i run dc motor with specific criterias as per detail? jdixit89 1) the motor should move forward for cirtain RPM then STOP when supply is on. 2) the motor should move reverse with exact same RPM then STOP when supply CUT OFF. the supply volage is 230V the motor is 12V DC.
By: jdixit89

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Wed, 16 Nov 2016 04:08:37 PST
Does anyone have tried to use a bicycle transmission for a multi-speed mechoui ? OlivierM4 I have an AC motor at 4RPM and I do not want to change the sprockets manually each time to change the speed. I would like to have a mechoui (bbq) which allows to have the following speeds: 4, 6, and 8 RPM. I think modifying a transmission of a bicycle: to change the speed I would just have to actuat...
By: OlivierM4

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Mon, 14 Nov 2016 09:11:21 PST
Need help identifying style of ring. JoeC271 I am needing some help identifying what style of ring this is. I got it as part of a repayment for a loan and need to know what type of ring to list it as. I know it is 10kt gold, the diamonds are real & the main setting is called an invisible mounting. Any help would be greatly appreciated.Thank yo...
By: JoeC271

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Sat, 12 Nov 2016 22:49:06 PST
Pickle Boat with 49cc motor? svince1884 Making a pickle boat for the kid.  Boat is made out of PVC and 55 gallon plastic barrel.  I've got a 49cc two stroke engine laying around I want to throw on it.  It's one of those motors that come off a pocket bike or stand up gas scooter. Anyhow, any thoughts on how to use it. I'd like to do a dire...
By: svince1884

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Mon, 7 Nov 2016 19:35:44 PST
Questions about hot wire foam cutter power supply? Orange robot I am building a hot wire foam cutter. I do not know what to do about the power though. I have a 12 volt adapter that plugs into an outlet , just like any ordinary adapter. I'm wondering though, if it shorts the adapter, it will blow the fuse, correct? I'm sure that's what would happen but other hot ...
By: Orange robot

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Sun, 6 Nov 2016 07:12:22 PST
DIY water cooler for a tig welding torch knowhow69 I purchased a tig welder and it came with a water cooled torch,but Idon't have the water cooler to cool it.Can I DIY a simple one?
By: knowhow69

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Wed, 2 Nov 2016 19:33:48 PDT
Can I make a strong permanent magnet with steel bar by electrical method of magnetism. if possible please guide me? ? babureddy Does the wire gauge (20,24,28,30,34,36 wire gauge) make a difference is the strength of the magnet? Does the voltage I supply to the coil effect the Electromagnet??? Shall i use 304 grade steel rectangular bar for this process ? if any other materiel please suggest me?
By: babureddy

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Tue, 1 Nov 2016 21:19:29 PDT
1999 dodge ram pick-up can't get the hood open, needs oil help don cochran The guy i bought it from said the hood came up on him a few times, last time it busted the windshield and bent the hinges. He put 2 bolts in it to hold it down , i take the nuts off pull the latch in the cab and nothing happens. Can anyone tell me how to get it open from the outside. Thank You
By: don cochran

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Mon, 31 Oct 2016 07:29:41 PDT
Ratio of gearbox lam Dear  All Please help me to know : Between 2 type model gearbox reduction ratio  by worm gear and other by spur gear ( please see photo ).  If gear ratio and motor power is same  equal  what kind of type gearbox  for more power torque  .Many thank you in advance for your time.
By: lam

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Fri, 28 Oct 2016 10:21:46 PDT
Has anyone made a swivel or swing arm out of black pipe fittings?? chugachpowder Ok, so here's the project. I want to make bar stools like the ones in this picture. See how there are two stools attached to a single black pipe upright with tees? My idea is to use schedule 40 uprights 1.5" with class 3000 2" socket weld tees. Dimensions look like the 1.5" wil...
By: chugachpowder

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Mon, 24 Oct 2016 07:02:00 PDT
Who can help me to make hho burner stove? ابوعبد اللها Aslam alecom  Im Mohamed from Egypt and this frist time i ask here  b4 im make dry cel hydrogen genertor and i get 1 liter per 50 second from 21  staliss sell plates 304  and i try  to make my own  stove and try to rune it by hho stove but it blow up beacos im not use flash back rresttor my qestion ...
By: ابوعبد اللها

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Fri, 21 Oct 2016 00:59:15 PDT
I have been unable to start a new instructable. Is the site not working? Dr. Joe When I go to publish the first step is to enter a title.  At that point the web site does not respond as the previous dozen times I have done it.  What's up with that?
By: Dr. Joe

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Thu, 20 Oct 2016 06:26:36 PDT
From “garage” concept to multi-materials workshop: ideas, layouts? Joel_BC The common concept of a “garage” (the ’man cave’ stereotype) is a place to work on cars and/or motorcycles. How could this be adapted to be a place, under a single roof, to work on small engines, and projects chiefly involving wood as the material, and ones made from steel and/or other metals? Situ...
By: Joel_BC

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Fri, 14 Oct 2016 17:51:34 PDT
Why does it say this video can’t be played with your current setup? marrs76 I enrolled in some classes and the video wouldn't play.  It said "This video can’t be played with your current setup."  Possible reasons?
By: marrs76

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Thu, 13 Oct 2016 16:32:22 PDT
Fixing up an old Fairlane with unknown problems? BenjyIsMe I have an old Ford Fairlane that has been sitting in my back yard for 12+ years. I think it originally had corroborator problems (something about catching on fire?) but I think my brothers had mostly fixed that. I'm sure there are other problems with it and there is rust. Last time they tried to sta...
By: BenjyIsMe

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Thu, 13 Oct 2016 07:28:59 PDT
How to convert an air pump/vacuum into a two mode machine which can blow and suck? KhayhenS Hi, I'm trying to build a simple robot gripper under a budget using this idea So from what I understand I need a vacuum cleaner that can change into an air blower with a flip of switch using the same nozzle. Is there any cheap option where i can...
By: KhayhenS

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Wed, 12 Oct 2016 11:53:19 PDT
Help with building an off-grid solar powered greenhouse acustodio1 Hey All!  I've been wanting to build an autonomous greenhouse (a growbox, frankly) in my apartment, as a proof of concept to build a real one in a place where is difficult to get energy to. I've some experience in building things, I know my way around a solder and given a schematic, I can pretty mu...
By: acustodio1

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Wed, 12 Oct 2016 11:01:48 PDT
Any ideas how to REUSE these film / foil / sheet ? To give them a second "life"? zholy Hi ... recently I've started a new job in printing industry and I'm crying everyday on the waste that is produced by this industry :( I would like to ask, if you could suggest anything, so that this waste = sheets could be reused ? See the attached pictures please. They are 900x1200mm (35" x 47") ...
By: zholy

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Tue, 11 Oct 2016 12:14:29 PDT
What kind of oil lube for a vintage penny scale? scarruthers Its a penny Coin-operated scale, mfgd by Mills Novelty Co., Art Deco platform scale in green & black porcelain. Thanks Susan
By: scarruthers

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Mon, 10 Oct 2016 18:20:11 PDT
how to avoid disturbing sound ? ajithca1996 i make a 5.1 channel amplifier but the amplifier 5 seekers are disturbing noise (the sound like boooo.......) the volume control increased then disturbing noise increased . please help ! how to avoid this sound amplifier ic tda2030 the amplifier input using dvd out put 5.1 chanel,usb module aux cabl...
By: ajithca1996

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Sun, 9 Oct 2016 09:48:42 PDT
How long should I home dry a large oak log for carving? eagle4297 Hi, I have a large trunk piece  29" in diameter and 5 feet long with the bark still on it.  I want to dry it out for carving on one side and standing it in my yard for a decoration, similar to a totem pole.  How should I dry it and for how long?  Also, I have two pieces about 10" x 29" thick that I ...
By: eagle4297

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Wed, 5 Oct 2016 13:47:02 PDT
Can i use Stepper motor Stepper Motor 42BYGH4417 in uln2003 ??? dannisa Can i use Stepper motor Stepper Motor 42BYGH4417 in uln2003 ??? Please answer, i need help :(  sorry im newbie 
By: dannisa

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Mon, 3 Oct 2016 09:05:43 PDT
What is the power of a battery required to run a motor of 2750 rpm motor? karthiknune Pls tell me the power of a battery with which a motor of 2750 rpm motor runs? What exactly will be the weight of that battery?
By: karthiknune

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Fri, 30 Sep 2016 22:15:27 PDT
What can be used to glue back together ceramic tiles from an old propane heater, and would Gorilla Super Glue work? TerrieB7
By: TerrieB7

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Fri, 30 Sep 2016 13:26:35 PDT
Would hot oil work to free a rusty siezed bicycle chain and other small parts? CyberR I'm just curious but how effective would hot cooking oil be to free up a seized cycle chain and other small rusted parts? I've searched around and can only find info on engines and cast iron pots and thats not what I'm looking for. Its also an idea for another use for an old electric fryer thats s...
By: CyberR

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Wed, 28 Sep 2016 11:55:23 PDT
How to Drill holes 1.6mm on SS321 Pipe thick of 0.2mm without getting Burrs abizerm We are manufacturing SS Bellows for which we are making Holes of 1.6mm through a Drill on pipe dia of Various size wall thickness is 0.2mm what we find is when we drill from the top burrs form inside the pipe which is hard to remove,can anyone guide us by having any information on Punching Machine o...
By: abizerm

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Wed, 28 Sep 2016 09:16:24 PDT
Which tool to drill into jesmonite (very hard plaster)? Lamie Hello workshop friends, I'm a novice maker and I would like to drill into jesmonite (very very hard plaster) to make candle holder (the hole has to be straight down). Which tool should I buy for that? A spade drill isn't good enough. Drill stand and the right drill bit or a proper drill machine? T...
By: Lamie

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Mon, 26 Sep 2016 09:38:52 PDT
Multi-function, multi-materials workshops? Joel_BC I'm on a small rural acreage. My shop situation is that I’ve got two separate, fairly compact spaces for working with wood (or general “handyman” repairs for the home) and for working with metal (cutting, welding, grinding, etc). My metal area is where I also often work with small-engine equipment. ...
By: Joel_BC

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Sat, 24 Sep 2016 17:30:56 PDT
How to choose wire gauge for Brushless DC motor? SlickT I'm planning to build a Brushless DC motor, with inrunner perm mag rotor and stator on the outside. How can i determine the proper copper wire gauge for the stator windings? How much current will the motor pull? At first i thought it was just "Power = Voltage * current", so knowing the power and the...
By: SlickT

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Thu, 22 Sep 2016 12:04:52 PDT
Gear 5 Slip out problem while driving? Ronnaii I'm driving VW Citi Golf and when driving and change to 5 gear it slip out,can this be caused by low gear oil?
By: Ronnaii

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Wed, 21 Sep 2016 06:46:29 PDT
How to repair a hole in a refrigerator curved plastic ice tray? readbob Our refrigerator ice tray has a 3 inch hole in the bottom. The hole is in the curved part of the floor of the tray. Is there a flexible plastic/acrylic I can use to repair the hole?
By: readbob

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Wed, 21 Sep 2016 05:06:46 PDT