how to make homemade tube bender?

How to make homemade tube bender, for 1" tube?

Asked by fietser 7 years ago



the evil of you tube

Gah look how much cpu and net traffic uploadig a vid on the tube makes! help

Posted by maker12 10 years ago


what is a nixie tube?? Answered

How many volts do they take?? can you please tell me of great nixie tube instructables.

Asked by tzq33tdq 7 years ago



Where to get a vacume tube necklace? Answered

I want to make a necklace#

Asked by nerd7473 6 years ago



Building a Stereo Tube Amp

I'm in the UK and interested in Building a Stereo Tube Amp (by thobson in audio). Can anyone advise on the UK equivalents for many of the components used in this project e.g. transformers, valves (tubes) and where to buy them? Many thanks.

Posted by DonaldStott 1 year ago


Tube headphone amp

I want to build a tube headphone amp. Is it possible to make a smps (switch mode power suply) to power it? It would be like a mix between old and new technology!

Posted by dwj300 9 years ago


Help Identifying A VERY Old Vacumm Tube?

I recently got a 1920's RCA Radiola 60 Tube Radio , and when I was servicing it I kinda accidently dropped a tube and the vaccumm seal broke and the glass broke. on the side of the tube it says "Philco H 5" it has four pins two bigger two smaller. Here are some pictures of it for reference.

Posted by jackillac92 9 years ago



Can i wire up a tube from an old radio just for the glow?

I found a 6BQ5 amp tube and know nothing about them other than the pin id's.

Asked by Capt. Howdy 9 years ago


Tube radio not tuning, only making a hum

I have an old, Light green GE tube radio, AM only, and when I turn it on it only hums, it doesn't receive any stations, How can I fix this

Asked by macwhiz 6 years ago


Coloured tubes of plastic we swung round our heads?

Do you remember those tubes of coloured plastic we used to swing around our heads and they made an awesome sound? What are they called and where can i buy one now?

Asked by 8 years ago


I need help identifying a tube

I pulled it out of a channel selector on an ancient tv, and i cant find anything on the internet about it, its short and fat with 9 pins, Written on it is the general electric symbol, followed by electronic tube, the only thing i can find on it that may be indentification is 18c-5, if it helps it was in there with an 6hq5 tube. If you could tell me what this is i would be grateful

Asked by fatfoohy 8 years ago


How can i make wrist watch with using nixie tube?

How can i make wrist watch with using nixie tube? Can you tell me what am i need  ? Parts and schematics? And how much costs? Thank you .

Posted by DarkPlace 6 years ago



Threading a glass tube? Answered

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?

Asked by haz630 4 years ago


Awesome, fun ideas to use my brass tubing? Answered

Hi I was going to make a steam engine so i brought some brass tube and tried to join the local metalworking club so i would have access to their knowledge and tools as i have none myself. The committee of this club are having issues and not accepting new members for 12months which disappointed so i have brass tube 1/2in 0.14mm it says on the sticker and I'm kinda impatient so i wondered if you guys had ideas of what i could do. 2 tubes about 25cm long. I've been thinking about what to do when my town is invaded (the street lights are off every other week and reports of shady characters near power station lately) A self defense tool, survival tool? Usually I'm creative but people having holidays at work mean i work 10hours a day 6 in morning 5 in evening. It drains you split shifts as you see in my maths fail. Anyway, i appreciate your ideas. Thank you

Asked by Scotty3000 7 years ago


How do I get past firewall to get to youtube?

My parents got really mad and blocked youtube and I feel like all my knowledge comes from there what should I do?

Asked by harrywatts16 4 years ago


I Need help wiring up a 4 pole 3 way rotary switch!!!!!!!!!!!!!!!!!!

I bought an amp kit but it only has one input source, I want three so I bought a 4P3T switch but I can't figure how to wire it up correctly HELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Asked by LASOUND 9 years ago


Vacuum Tube Chess Set

This chess set made from vacuum tubes is pretty stunning. Plug a tube into a square and the top lights up. I doubt that the pins will stand up to very many games of chess, but it is lovely to look at. Vaccum Tube Chess Set via Make

Posted by fungus amungus 9 years ago


where do you get a 6mm steel tube?

I was wondering where you could buy a 6mm steel tube for the 6mm mini cannon.

Asked by coatofarmsxl 5 years ago


Could I use a 12AX7 tube in the ValveLitTzer instead of a 12FQ8?

Would a 12AX7 tube be suitable for use in the ValveLiTzer instead of a 12FQ8 because I am unable to get the latter?

Asked by 22bsti 9 years ago


has anyone built a pneumatic tube system

Hello, has anyone built a pneumatic tube system? Or anyone have ideas on how to build one and the materials needed? thanks

Posted by gregdove 9 years ago


Ge AM tube radio-Only hums won't tune?

I have a GE tube radio that I got at a yard sale, but it only hums when turned on, it won't tune to a station

Asked by macwhiz 6 years ago


Tube amplifier schematic

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

Posted by smoke 10 years ago


how can I make a vacuum tube necklace? Answered

I want to know so I can make one and where do i get one.

Asked by nerd7473 6 years ago


Valve/Tube Amps

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

Posted by RobertChallingsworth 6 years ago


"Organ donors"... or: sources for tube project parts...

The "Vacuum Tube" group needs a first forum topic. Here it is... Sorry 'bout the pun... but I could have used Time to get Organized... Be thankful ;-)Vacuum tubes and parts tend to be rather expensive these days. But there's a good source for parts, and it's often free: old tube organs.I picked up a working 1960 Wurlitzer a couple days ago. It's got:-- full complement of tubes (the mother lode!), including9 (nine!) 12AX7 preamp tubes.2 6L6-GC power tubes1 5U4-GB rectifier(there were other tubes: (28!) 12fq8's but they're not so useful for audio...)-- Huge power transformer-- Large (20-25 watt) output tranformer-- two 16 ohm speakers-- lots of carbon-comp resistors, sockets and other reusables.Total cost--just gas, and a sore back.Even the non-tube organs are a good source of speakers, reverb tanks, pedals, etc. The tank, bass pedals and the volume pedal were from a solid-state Conn organ left on the curb...The bass pedals could be made into a MIDI project, and the volume pedal would be a nice start of a wah, or left as-is. Yeah, they are grungy, but that's easy to fix....

Posted by gmoon 9 years ago



vacuum tube television Answered

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?

Asked by The 4th Doctor 8 years ago


bass tube overdrive?

I would like to build a simple valve overdrive, will the valvelitzer do or will it need some mods?NO FUZZ plz, im looking for a nice warm creamy valve overdrive.gmoon can you help a clueless lad like me?

Asked by wynand van reenen 8 years ago


where to find thin wall plastic tube?

Hi, I'm building a wind tunnel, and want to achieve a more laminar flow. I've tried drinking straws but they seem to stop the air flow too much. So I made a much larger bore honeycomb with toilet roll tubes. That worked a lot better, so now I'm after something a little better looking. Does anyone have any ideas for where to source a few meters of thin wall plastic tubing? About 25mm -> 35mm diameter. Transparent would be ideal. Thanks!

Asked by matthewvenn 8 years ago


Rubens tube help!

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?

Posted by ir0n_ma1den 10 years ago


Can someone tell me how to check voltage on a power transformer?

This will be for building a guitar tube amp.

Asked by fidpick 9 years ago


making a tube amp from an old, working, tube powered stereo

Hi- So I scored an old stereo from a friend that works- everything but the turntable anyway. i want to convert it into a guitar amp, but other than +/- i don't have any electrical knowledge.  looking for any tips advice on the easiest way to go...  i can post pics if needed.  in my head: taking the input for the turntable or something like that then wiring a 1/4" input for a guitar somewhere.  is that possible?  i've looked at most of the tube amp instructables & am not finding what i really want.  any help would be appreciated!  i can follow instructions well, just not sure what to do, and don't wanna get into something way over my head!!! THANKS! brandon

Posted by greezus 7 years ago


Light Strips? Answered

Instructibles had a contest a while back involving some kind of light up tube thing that wasn't led.  I don't remember what it was though, anybody remember it?

Asked by jj.inc 6 years ago


What is this plastic tubing called? Answered

Hi all, I came across these woven plastic tubing which when squeezed on either end turn into toy rockets in a science and technology museum and I was wondering if anyone could point me in the direction of where I could source more of these things. I recall they were named 'boone rockets' but that's been a fruitless internet search. I would love to apply this product to jewellery/sculpture so it would be good to know what the process/technology is called. Cheers!

Asked by jarris 4 years ago


I have a pneumatic tube from a bank, what's something cool i could do with it? Answered

 Had it for 5 years, never could figure out the best thing to do with it, but it is too cool to pitch. It's the thing you put your money in and watch WHOOSH away. I've attached a pic of someone who turned it into a handbag.

Asked by blorgggg 8 years ago


Vacuum tube clock kit

This lovely clock is made from a new kit from Adafruit Industries. Once they're back in stock you can get the whole kit for $65 or just the PCB for $15. If you truly want to do everything yourself you can make the whole thing yourself with instructions here.HOWTO make a vacuum fluorescent display clock

Posted by fungus amungus 8 years ago


Are tube type amps really better than solid state type amps? Answered

A question below reminded me of this. My friend and neighbor plays a guitar and has been going on about how great his new Fender tube amp is and how much better it sounds than the solid state amp he previously used. Truthfully, I've listened to him play on both (he's no Chet Atkins for sure) and I can't discern much, if any difference. I've done a little research and heard words like, "warmer,"  "more vibrant" and "louder" used to describe the difference. With the exception of louder, most of these descriptions are not actually measurable. Is there a way to definitively say tubes are better, or is it just a subjective quality that depends upon the ear of the listener?

Asked by Burf 7 years ago


Can anyone tell me step by step instruction on how to convert an old phonograph tube amp to a guitar amp.

Can anyone tell me step by step instruction on how to convert an old phonograph tube amp to a guitar amp. It has a 6bq5 power tube 6X4 rectifier tube, and a 12aX7 pre tube. Can anybody please tell me how to do this. You would be so appreciated. I have soldering skills, but not too much electrical knowledge. I know what resisters are, I know what transformers are, I know what capacitors are, and I know the very basics of their functions, but I can't understand how to tear it down and make it a good guitar amp. I want to remove the feedback circuit so that it will distort naturally. I would also like to modify the equalization and tone to better suit guitar amp. Please help. You would make me so happy. I cant afford to buy a good tube amp, and this is my only hope of making a great sounding amp. Thanks so much. Please be as detailed as posible in these step by step directions. You are awesome if you can help me.? Thanks The amp is from a 1959 Newcomb model R124V phonograph with an inboard 6"X9" speaker. It works perfectly with no crackling knobs or nothing like that. The amp is super clean and well cared for The tubes inside are 6BQ5 FROM AMPEREX BUGLE BOY. The rectifier tube is 6X4 from sylvania, made in USA. The 12AX7 is made in Britain, but I can't see a name on it. I have many spare 12ax7's lying around though. Thanks so much in advance.

Asked by meman-mark 6 years ago


Metric Tube Supplier?

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.

Asked by bombmaker2 7 years ago


Question on attaching the round to the square.....

I need to attach a tube (it is fairly rigid, like a bic pen body), to a box (coming out of the smaller end of the box) and it needs to be fairly secure as there will be wires running through it and a "pickup coil" attached to the end of the device. The box may be plastic, or it may be metal, I haven't decided yet. I had thought about threading the barrel of the tube and just using two nuts to lock it in. Any other ideas would be greatly appreciated.

Posted by Goodhart 10 years ago


I'm modding an old tape player aux amp (5w) for guitar. I'm having trouble with understanding basic tube circuitry.

Should the signal go from input to 12ax7 grid1(pin 2), then plate/cathode1(pin 8) to gain pot back to grid 2(pin 7) and then output from plate2(pin 3) to Volume,tone control stage then on to grid1 of el84 power tube? Thanks in advance, Terry

Asked by 9 years ago


What is the proper way to solder the compnents; resistors, caps, diodes etc. to a pcb. Flush or off a little?

What is the proper component positioning when soldering resistors, diodes, caps to a circuit board, flush or just slightly above the board? I want to get a good solder bond on both sides of the pad.  I'm building a Nixie tube clock kit.

Asked by stienut 7 years ago


How do I know where to connect the different parts of a stereo tube amp, you know the volume control RCA jacks etc ?

I am a beginner and I bought a Diy kit, I was told but when I got the PCBA and schematic I wasn't sure where to connect the volume (pot), the input or the output RCA jacks, the power supply and lastly the output transformers. I told the seller that I was a beginner and he said that his schematic was very detailed. Well I thought it was have the connections marked or something or at least have notes written on it . I an enclosing the schematic , I have even been learning how to read a schematic and all of the symbols. But I'm still lost. HELP!!!!!

Asked by LASOUND 9 years ago


Do you know what is the proper name for this lights ???

Hello ... do you know what is the proper word for these lights : www.youtube.com/watch I would like to find the scheme for it and which microcontroller is used for these lights. I know, that I would be able to do this with arduino + shift registers ... but that would be too expensive for my idea = I was thinking about creating a "neuron net"  Today I saw it in ZARA (shop with "clothes") but when I asked them, where they got it from ... they said from Spain - from their "headquarter" :( Thanks ... Zholy

Asked by zholy 8 years ago


Is a transitor the same thing as a tube found in guitar amps?

If it is, could I use a tube in place of the transitor in a simple transitor amp circuit?  I am trying to build some tube amps...  I have built many transitor amps but I just can find that tube sound...  I want to also know as the most simple tube amp circuit.  I like to start with easy and simple and then experiment...   Any advice on tubes?  Thanks...

Asked by rickonicko 8 years ago