MAKING AN OSCILLION TRANSMITTER TUBE
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- Опубліковано 1 жов 2024
- Here we repair the de Forest oscillion transmitter tube made in a previous video. A crack appeared in the glass long after the tube was finished. This repair results in failure, so another attempt will be made later.
Great to see a vid from you again :):)
hello Mr Glasslinger nice to see you have not seen you on for some time hope you are well
The thousands of hours, the tens of thousands of hours to hone your craft to this skill level can only be imagined… every piece a work of art, every piece handled with such precision and moulded with such passion.
Truly, you love what you do.
Skill level: God
I don’t care that the video is short or that he wasn’t able to repair this tube, I’m just thrilled that he’s back in action! I’m sure I’m not the only one who was worried!
Thank you very much for saying what you are doing and why, it is very helpful in understanding.
Been watching your channel for some years now. You never cease to amaze me with the sheer amount of knowledge and know how you have. Part maker, part engineer, part restorer, part artist. You're an inspiration for many including myself. I'm always one to try and fix everything myself, even if I've never tried it prior. Thank you for being awesome 🙂
So glad to see you again! I missed ya and your videos!
Fascinating as always. Other than being beautiful, what was the reason why some vintage tubes were globe shaped versus something more simple like a modern cylinder tube?
I've wondered the same thing and I'm guessing maybe just size. The smaller the envelope, the closer together you can put things and the more space you have inside the cabinet overall. For an instance where maybe in your radio or amplifier you can see the tubes then maybe I would go for a big Globe to just for the aesthetic. I think these handmade tubes look really neat. I have seen some cabinets that they just would not fit into though.
I’m guessing that heat dissipation would have a lot to do with the shape of the envelope.
Small cylindrical envelope where heat is not a major concern - small area for heat dissipation.
Larger spherical envelope, requiring more air to circulate and dissipate the heat.
I would assume it kept the globe temperature down by giving it more surface area farther away from the heat radiating parts inside. As the technology matured they were able to run the glass hotter without failure and make the envelope smaller.
Success or a setback. It’s always interesting to watch you work.
Great to see you again . How the hell did you acquire all that knowledge and skill . You amaze me . Best wishes from the UK ...
Thank you for sharing both your wins _and_ losses. Too many UA-cam Creators fail to do that, but we're all human. We're looking forward to your next video(s)! ;)
These videos are almost therapeutic. There's something very satisfying about seeing an expert work.
A joy as always! Love your attitude to failures too 😊
Always great to see you here Ron. Fascinating video as always.
A lot of rework because of that crack, proves there's a lot of skill plus some art, science and a little black magic involved to get a result, look forward to the next video, keep well.
I am VERY HAPPY to see you return for another educational moment in my life. Thanks Ron. xxx
Do you have asbestos fingers? I can barely touch anything that's more than lukewarm.
Yay! I was getting worried cause you know... the nasty thing.... anywho... 🙂
Thanks for the great video! Do you have any plans to make another CRT? I was recently able to make a sealed off CRT and would be curious of your construction techniques.
We Love to Watch you Building Vacuum Tube. Beautiful work. Thank you so much 73 KI7DYM
This takes an unusual skillset that most people could never undertake. That being said
I still think you will get it done. One failure is how we learn to do it right the
next time! Awesome work anyhow Ron.
A lose isn't always a loss - your transference of knowledge makes every little loss a bigger win. Your glasslinging skills are a joy to watch. Looking forward to the next attempt.
Great video, great to have you back with your tubes on the tube.
Good to have you back
I second that!
Love the fact you show failures! Too many on UA-cam today don’t!
Thoroughly enjoy your content! It inspires me to consider rehabilitating an old tube radio. I don't know why, but they just sound better.
Fascinating as ever Ron, thanks so much!
I would love to shadow you in your workshop. Tubes are magic.
Win some, lose some. Thats the way it is. I love the curiousity of how to fix it when something went bad :). Thanks for the vid and looking forward to the next one :)
I admire both your patience and skills! Thanks also for sharing some of the ones that don't go to plan.
I'm always excited when you produce a new video, especially your home-made vacuum tubes... It's driven me to stalk turbo-molecular and diffusion pumps on eBay! :D
i love the tube videos aswelll. one day i swear ill make tubes aswell
Would you have to wash the tube out, considering it may now be full of oxides from exposed getter?
you are your own warranty repair specialist, perfect!
Thanks from Columbus Ohio USA
Solid state was a premature birth.
I LOVE this! I have rebuilt light bulbs before, but with more failures then successes, so I gave it up, now I am getting very interested in giving it a try again! Where do You get the little spot welder You use to weld the plates and filaments on with? Thank You for this video, even if it was not a total successes, It still shows that You have a Huge talent for this, and I find it fascinating indeed!
I built all my equipment. I can't afford to buy stuff.
I love seeing your videos. I grew up between the radio and TV tubes and through my father I learned to repair. I love how you make these tubes yourself. I have a question. Can you make an Ozone UVC lamp? I am fascinated by these bulbs and have many in my home. Is this difficult to make yourself?
Most of these produce UV-C, which is severely absorbed by pyrerx and other types of glass. Thus the envelopes are made of fused quartz, which takes special equipment to work with. (which I don' t have)
@@glasslinger I didn't know that a special kind of glass had to be used for this. However, I was able to melt the glass by heating it. Thank you for your answer. I look forward to more interesting videos from you. Greetings from Belgium.
Brake Fluid !! never worked in UHV spectroscopy then Hahaha ! nice one Ron that plugged the hole alright and gave the Diff something to think about, love your content....cheers.
Lets see if my memory from 1972 is still good... I think we used spectroscopic grade ethanol?
@@theoldbigmoose Yep we did ! good old Isopropanol but only if we ran out of used sump oil !!
beautiful all your work !! greeting from Argentina !!
hi. I'm going to make glass tubes from fluorescent tubes and have trouble cutting them without cracking. do you have any advice ?
Don't bother! The type of glass is such that it takes elaborate annealing to keep it from cracking. Use borosilicate glass.
Brilliant - Thank you : )
Does Gravy Cat make a cameo appearance in this show?
hi man how are you
fail or not your great
Have you thought about doing a dye test to find any cracks?
The fluorescent dye in a pressure chamber is messy, probably last resort.
@@danishnative9555 maybe before putting it onto something😅
Ron, I really appreciate you showing the evacuation stem reattachment process. I have to do the exact same thing with a large (never constructed) plasma globe. It looks like with careful preheating and post-annealing I might be able to pull it off myself! Sorry about the oscillion failure - glassblowing like this must be a huge exercise in patience and perseverance.
Lots of work 😢
But you have a great attitude and I know you will succeed next time. Thanks for the video.
@glasslinger: have you ever tried building an entire circuit within a single vacuum envelope? i got to thinking about the early days of space flight and the russian rod pentodes, and how possibly in the vacuum of space they wouldn't even need a glass envelope at all. maybe a simple radio or amplifier would be practical as you only need a few passive components that would fit inside the bulb. i was playing with some of the russian tubes on the bench and i was very surprised that they could sustain enough gain to have a triode hartley oscillator drive a speaker winding at only 4v on the anode.
Later this year I will be making a replica of the Lowes tube which has three stages plus resistors and capacitors inside the bulb.
@@glasslinger brilliant! i look forward to it
The captions you added are quite helpful.
I like how you show both the good and the bad outcomes; it’s much more educational. I learned a lot about vacuums and glass behavior from this.
Thanks for sharing 👍
I love watching you make tubes please make more, it’s so interesting, make some 6v6 tubes
Thanks for sharing this with us..its always amazes me watching you make these tubes and getting the theory on why and how it all works....John
Cool Idea to test for leakes with ethanol. I have a leak in a 3 stage vacuum pump and will try to find it with the same method ;D
Hi all I can say is you are a very intelligent man I haven't got the patience for something like that please carry on doing the video's.
nice work love your videos
Must be bloody frustrating getting so and then having it crack :(
Really interesting video as always,looking forward to the follow up
Gosto muito do seu trabalho maravilhoso. Gostaria que você fizesse uma válvula grande para eu. Brazil
OMG L love your video channel ! I have always wanted to make a tube all by myself and have gathered tips from very very people from back then. Alas, but I missed my chance to put all of the techniques together.
( I used to be a Argon/Neon/Xenon-Sign tube blower 35 years ago for 2Yrs )
I was advised to loosen all clamps while the glass is still semi-plastic....wait....then loosen them all the way - and wait. It really cannot crack because glass became crystalline while under nil stress.
The wire-2-glass cracking is another issue.
I was advised the best electrode entry Metal is to recycle old Vacuum tubes because they provide the best metal thermal expansion rate coefficient for the seal, and a copper wire on the outside. Recycling ordinary light bulbs, Neon electrodes from signs (with ports!), and especially the much larger 4-8-Pin socket tubes with highly effective emitting Filaments inside.
Sincere thank you and carry on sir!
P.S. I hear that the phosphorelectrode from a Magic-Eye tube can be (cut up) reinserted and it will still glow when recycled
The usual failure of the old eye tubes is the phosphor has worn out. They gradually fade with time. Not practical to re-coat the target with new phosphor so the old tubes are junk.
I am glad I decided to check with your channel. Thanks for all the great content
would it help to transfer the valve in to a kiln straight after to anneal the glass and release the stresses etc?
somehow i knew you were gonna upload today and now look new video how crazy is that
Thank you for your channel. I really enjoy watching your videos. I have a question relating to welding the getter to another material. What is the best approach to welding the getter to Kovar? Any suggestions?
Using a CD welder works fine. Short hot pulse.
👍👍
I have a vintage VT-1 tube from a one tube regen set, 1920s. The filament is naturally burnt out. I would love to have it broken down and repaired if possible.
It's way less expensive to find a working VT-1 on ebay.
You shouldn't take so long between videos... :)
I remember a vacuum leak testing system that worked by holding a high voltage high frequency source (rf version of Electrobooms magic wand lol) close to the tube while being evacuated. If there was a leak the air entering the tube would be visible as purple streamers.
See my other tube making videos. I use the hand held sparker to test for gross leaks!
The Hall of Failed Tubes! I always enjoy your work
Can you make a video showing how to build your tube tester?
Really glad to see you again Ron especially on a Friday evening 👍
welcome back master, cnt see you long time and we miss you
Thank you for sharing your knowledge!
it would of been cool to keep the old tube as is for the museum shelf and make a new tube for real use 🤔thanks for the fantastic tube video 🥳stay well ✌
The second try also failed so it is now in the display box. I will start from scratch on attempt 3.
Must be a nightmare trying to do this in your own home. Know you can use helium for leak detection, and as I recall also cheap methanol. Glass to metal seal lead wires tungsten or kovar? What do you use? You need a big hydrogen bake-out furnace for parts too. Company I worked for used Schott glass envelopes fabricated on glass lathe, then annealed for many hours.
I guess he uses Dumet and sodalime glass rather than kovar or tungsten and borosilicate
@@5Perf65mm he uses borosilicate
Absolutely fascinating!
Very 👍 Nice always enjoy your skills
Thanks Ron always good to see your work
The Guitologist brought me here!,,,,,
Amazing videos always
Amazing work! What is your getter material?
I use the modern alloy getters that are made of a mix of reactive metals.
I've always wondered if this was possible. I have a western electric 300b with a crack in the glass. Is that fixable?
The cost would be comparable to getting another tube off ebay. It's no piece of cake to do this work!
@@glasslinger how many views would you get to rebuild an authentic Western Electric 300b? I'd donate it to see you make a video about it.
Just watched all the videos on the new production Western Electric 300b's out of the Rossville plant. Fascinating to see the old iron come to life, with new electronic processes and quality assurance. The price is pretty high at around $1800.00 USD per tube! Looks like the investor secured all the old production equipment, drawings and specifications from ATT. Interesting what the world market will bear for analog tubes.
Just found a wonderful Western Electric video that shows the same equipment that the new Western Electric is using to make the 300b's
ua-cam.com/video/_-JzxX75oYc/v-deo.html
Outstanding
Why couldn't you repair the pinch by adding glass and pressing it flat?
If it was only the pinch that would be done. There were more problems.
@@glasslinger Yeah, I saw that too the end, the entire envelope was toast, glass couldn't handle the strain.
Don"t give up
Fascinating
legend
I have a question could you re build a picture tube
I know the early television museum in Ohio, US was working on a crt rebuild restoration room. I am not sure if they have that working yet.
I don't have the equipment to handle large tubes like that.
Just say no to crack. :)
Does lower quality glass make it crack more often ?