Does anyone know a place local (Target, Walmart, Home Depot) where I can buy this, or a water balloon slingshot? Please help and fast, I need this by tomorrow!
Question by KnexFreak360 | last reply
I have a basically unlimited supply of cardboard tubes measuring approximately 63" in length, 2 5/16" in diameter, and 3/16" thick. If I put these up for sale do you think anybody would be interested in buying them? They are very strong and durable, and would be GREAT for many different type of crafts and projects.
Topic by Lord Sinroyal | last reply
I started thinking about how the tube material could be improved. Although I love the ghetto look of pringles wrapped in the invincible duct tape, improvements can be made. You could use PVC or ABS for the tube, it wouldnt need pressure rating because Im sure this thing wouldnt have enough power to explode the pringles/tape team. This is rather cheap and you could just glue on an endcap. Then a BBQ ignitor can be threaded in, a ring to define the chamber and barrel and fuel sprayed in! However getting the perfect cost/durability/strength ratio is hard.
Topic by SNDM
You know the "heavy" gauge metal tubing you see on swings and roundabouts in the public play parks? What is that called and how would I bend and shape it without having to go to an expensive, specialist shop, please? Pretty much I want to have a straight part about 3 metres followed by a curve of radius approx 1 metre and another 1m straight after the curve. Thank you for reading me and your time to reply.
Question by kevinhannan | last reply
I got my hands on hundreds of meters of network tubings last year, thinking I could use it for SOMETHING (have ten times more than on the picture). But I don't get any ideas!!! :-( Should I melt it? Into what? Should I build a statue? How? Could I make art of the tubing? What kind? I'm completly dry, pleeeaaase help... Would appriciate if you would send pictures to your ideas! :-) Thanks!
Question by JimNeilBerg | last reply
I am looking at moving some Antifreeze around in some tubing. http://www.homedepot.ca/product/svge10-3-8-inches-od/925278 is the one i have. Would i be able to put something like Prestone thru it with out damaging it or causing it to leak? Also, part of the system is going to be made out of copper tubing if that can be an issue also.
Question by andreblue | last reply
Question by fuzi | last reply
Hi everyone, I have found a local store close to my home that will sell me electrical metal tubing, but they will not cut it (they only sell it in 10'-long tubes). They have told me that they have a hacksaw in the back I can use to do it myself, but since I am just kid I thought they might be kidding me. Is it feasible to cut 1 1/4" electric metal tubing with a hack saw? The tubing looks pretty thick to me and I would need to make three different cuts. Thank you for any advice, James
Topic by james.kirin | last reply
I have a vacuum tube from my collection here that I would like to test. It says on the box International, Electronic tube, GTE, Sylvania, And what appears to be 12Z - the last letter or number I don't know its either a 1 or a capital i, 12Z - I or 12Z - 1. It has 12 pins, 3 of which are not connected to anything, I can see that visually. Any help would be appreciated.
Question by Electric Spectre1 | last reply
I was curious if it's possibly to extend a projected image, from a projector (like tv/computer) down about a foot of tube. Tube would be 1 - 2 inches wide. If this isn't possibly what would be the smallest width the tube would have to be for it able to go down a foot of length?
Question by ebodenberg | last reply
Does anyone have a schematic for a stereo tube amplifier, I just acquired a large quantity of tubes, a tube tester and some other assorted electronics from my grandfather. Ive always wanted to make a nice tube amp, now all i need is direction. It will be another 2 weeks or so before I can actually pick them up and start testing them so I was just trying to find some schematics to get me in the right direction. I figure this may even make a nice first instructable as long as im not completely lost in the schematic. Thanks smoke
Topic by smoke | last reply
Hello all, I wish to make a telescope with a long (1 metre) cardboard tube I got with a potrait I bought a few days ago. I already have 3 smaller tubes - 2 from silver foil rolls (which are very thin in diameter - about an inch), and another from a soldering iron (which goes inside the big tube easily). Is it possible that I make a telescope using three tubes (one sliding inside the other) and three lenses? If yes, how and what lenses I need to use? Regards
Topic by rseni
Hi, I am currently designing a stereo/mp3 amp for my education and I was wondering... Is it possible to incorporate a Valve/tube into a conventional stereo circuit? (like a standard valve amp but smaller and without the Equalization effects) I suppose the Valve/tube watts would have to match the speakers, but is this possible or would I have to use a circuit from a guitar amp that is already paired with a valve/tube amp system?! Much appreciated. -Rob
Topic by RobertChallingsworth
Hello, I'm looking to make a prototype and I need to have a thick ( 1/8 of in) glass tube threaded at one end about a 1/4-1/2 in. up so I can screw on a cap. How would I go about getting that done or have one custom made for me? Can anyone help?
Question by haz630 | last reply
Hey everybody, Ok so me and my friend built a rubens tube for our science project and fired ot up today. It was awesome! But, we have one problem. the flames keep getting blown out or are dying and we dont know why. Our tube is about 4 or 5 feet long and has holes every half inch (1/16th drill bit). we used latex sheets on both ends. the propane is a camping tank (small) and feeds the rubens tube through 2x 1/4 inch feeds spaced evenly apart. It may just be that we need to let the tube pressurize more. Our tube is 4 inches in diameter and is about 5 feet long. We let it pressurize for about 5 minutes. I think maybe somewhere along the lines of 7 minutes might do the trick, because when we went to light it, the initial flame height was very short. Has anyone else used the same setup we have?
Topic by ir0n_ma1den | last reply
ive got an old working color vacuum tube tv, a Motorola quasar portable. im wondering if its worth any money or if i should just go ahead tear it open, and feast on its delicious inners it works fairly well with no discernible problems that i know of. i took a look inside and dident see any silicone. do people collect these or anything?
Question by The 4th Doctor | last reply
I have a basically unlimited supply of cardboard tubes measuring approximately 63" in length, 2 5/16" in diameter, and 3/16" thick. They are very strong and durable, and would be GREAT for many different types of crafts and projects. I'm honestly not sure what to charge for them, so if you're interested please tell me how many you want and your asking price.
Topic by Lord Sinroyal
Can i fit a 700x28-35 inner tube on a 700x45 tyre. my common sense says no its first tyre ive needed to change tho so i went halfords got told a 700x45 sounds more like a motor bike tyre and was sold 700x 28-35. just checking before open them and cant get a refund.
Topic by adonoghue | last reply
Lately I've been pondering building a tube amp for my electric guitar, and I'm wondering if anyone has tips on component selection/could recommend some resources for me, since I'm not exactly an audio expert. I'm considering something in the way of a half-stack, any ideas on what the cost would be of building that, and what kind of wattage I could get without breaking the bank?
Question by RelaxedSoup | last reply
So, i'd like to take the idea of a vortex tube and make it larger. much much larger. If i were to use a 3-4 inch pipe, how long would it have to be, and would i be able to supply it with a high power blower (centrifugal), or would i have to find some way to provide 80-120psi at a huge volume? i leave my question to the community!
Question by kretzlord | last reply
So, I'm working on a coilgun, and I don't want to use camera flash circuits to charge the capacitors. Anyway, I've recently come across this, and was wondering if anyone knew what voltage it put out, and current, and stuff like that. Also, if anyone knows an alternate way of charging capacitors to a voltage of 100v - 400v, please share (after all, sharing is caring). Ciao.
Question by LiquidLightning | last reply
Does anyone know of any good steel tubing suppliers. I need a few different sizes, all of which cannot be found at any local hardware store, in square and rectangular shapes. Also, I found one supplier already and they had so many sizes to choose from. But they only ship large quanities to companies, not to the individual. So if anyone knows of any suppliers that can supply the following sizes for a decent price, your help would be very much appreciated. The sizes I need are 40mm square with 2.5mm wall, 25.4mm square with 2.5mm wall, 20mm square with 2mm wall, 40X20mm with 2mm wall, 35X16mm with 1.5mm wall.
Question by bombmaker2 | last reply
I am in the process of creating a plasma tube, similar to those globes but made from an acrylic tube of about 80cm lenght. In my small scale experimets with a glass bottle instead of the tube I was able to find a way to mix some Argon gas into the vacuum to create the type of plama arc I want. Problem is the HV part for the much longer tube and how to keep the input voltage at 12v to be electrically save. To drive the switching part of the HV section a simple quare wave generator with adjustable frequency and pulse width is used. In my current design I use 5V for the driver and 12V for a TIP122 that drives a modified flyback transformer directly. Now to specify my problem: The TIP is good for 100V and up to 5A with proper cooling. But I would need to make a new HV coil capable of delivering around 80kV at 12-30kHz - that is the easy but time consuming part. The primary side would have quite some inductance and I fear the TIP122 would soon get into trouble. So I was thinking of using a IRF260 mosfet instead but they need a proper gate driver for high and accurate switching speeds. To further seperate the driver from the hot action I thought of using a LED on the driver side connected by a fibre optics cable to the Mosfet driver. Would it be feasable to use good a transistor to drive the gate of the Mosfet directly or is a gate transformer the better option? Are there any shematics available for a gate driver that uses an optical input? And yes, of course I will make an Instructable if I ever get it all working to my satisfaction.
Topic by Downunder35m
Question by fuzi | last reply
The male and female ends on the tubing slide together, inside one tube there is a device that has a little ball shape pushed downinside the end that pops through a drilled hole which then pops into a drilled hole on the other tube..I need to locate this device and find where i can get that tubing ( male and female ends that fit together.
Question by pmcwain4264 | last reply
So there's this project I'm working on, and I need to be able to taper (or round off) some 1/4 inch clear vinyl tubing (figure 1). I tried using heat to taper the tubing, but all that did was make it the opposite and be enlarged (figure 2). What I'm trying to do is round it off (figure 3), I already tried sanding the tubing, and I tried shaping it with heat, but to little success. Does anyone know an easy and effective way to achieve something like what figure 3 shows? Preferably using (more or less) household items/tools.
Question by techno guy | last reply
I own 1, and i am thinking of buying the instructions for a roller coaster on ebay, and the seller says i need 60 ft. How much is included with the SS ?
Question by getoutofhere623 | last reply
I'm building an audio vu meter, and thought the LEDs would look nice enclosed in some frosted tubing, but I'm having trouble finding any. Something like a fluorescent tube would be perfect, but the coating on the inside of them rubs off fairly easily (is it phosphorous based?), and cutting these things open isn't usually recommended (they have small quantities of mercury in, I believe). It's easy enough to find perspex tubing on ebay, but it's all clear - I really want something translucent, so that the LEDs give a glow of light, rather than a point. Is there something I can coat glass or perspex with to create this effect? Or am I searching for the wrong words? I sometimes see the fluorescent tubes referred to having a satin finish, but that hasn't helped
Topic by psmith37 | last reply
For me, ordering online is a last resort, so I was wondering if anyone knew of any brick-and-mortar stores that carried something like that. Also, the woman who runs the chemistry dept storeroom at my university is a singularly unpleasant lady who won't even give students new equipment unless the lab professor insists.
Question by zalf
I'm working on a multicolored mask with EL wire and want to string the wire through tubing. I need tubing that's got an ID of .5" (at least), and is preferably frosted (translucent) white (though clear will work), and quite flexible. I had originally thought of using Nylon-12 flex tubing in a natural color, but I'm not sure that the natural color is translucent. Does anyone know of a specific product like this?
Question by BretMattingly | last reply
I know there is a difference between tubing and pipe, but I don;t know what it is but the product I'm thinking of is the stuff you use for central heating/water etc about 13mm diameter.Along with the question/idea for a gaming chair/console elsewhere in 'Answers' I was wondering how to strengthen the piping - could I squeeze something in there like foam expander to make it *much* stronger, do you know please?Many thanks for stopping by ; I really do appreciate it ;-)
Question by kevinhannan | last reply
I have about 5 reels, each of around 40+ meters of red plastic tubing. Each one is a slightly different diameter, ranging from around 9mm to 14mm. I believe that it was originally intended for the repair of church organs. The question is, what can I possibly make from this stuff?
Question by GrotBox | last reply
I would like to build a low voltage op-amp circuit for an analog computer. Can it be done ? I would like to use tubes in the 12 volt range. The idea is to construct an analog computer like the Heathkit EC-1, but using low voltage tubes for the op-amps. The EC-1 is very expensive, and hard to find on Ebay etc. Any ideas? Thanking you in advance, Wayne Verish
Question by gort59.5 | last reply