The Magic of Flameworking: Crafting Electrical KF25 Vacuum Feedthroughs

[@daCount0]

A great thx to all the glass artists who helped all the chemists and physicist to create their gears - a job with much heat to withstand.

[@vinh7251]

I will never tire of watching someone use great skill to create something that is as beautiful as it is useful. I could seriously watch content like this for hours. 👍

[@tissuepaper9962]

Become a tradesman yourself and you can not only watch, but do. The only thing that can surpass the satisfaction of watching something be made is making it yourself.

[@crabmansteve6844]

As much as I love art, nothing makes me happier than scientific glassblowing. It's always a treat to watch someone who is a master of their trade go to work. The speed, precision are incredible, and something that always stands out the most to me is economy of movement. Masters don't have to double back, there are no unnecessary movements, everything is just one fluid process from start to finish.

[@jhyland87]

This dude is so talented

[@markedis5902]

I find watching glass blowing absolutely fascinating. More please.

[@WaffleStaffel]

It is mesmerizing to watch a good glass blower. Impressive that he has the skill to fuse electrodes considering he does so few of them. I would love to be able to make my own Geissler tubes.

[@jimsvideos7201]

Thank you to both of you; his work is captivating and you did a brilliant job of capturing it.

[@pelegsap]

Johann, deine künstlerische Glasarbeit ist wunderschön! Ganz tolles Video 👍🏻

[@awholelotofnumbers45]

I have never once in my life seen nor considered a gas discharge top. Absolutely amazing.

[@torydavis10]

Man, I miss my torch. I spent my first few adult years first learning at a school and then working as a lampworker and loved it, but life bounced several different ways after that and on the road from there to here about a dozen years ago I suffered a complete loss of torch tank and tools. It was only a hobby by then and it's a lot of money, so I've never replaced it. I'm also very much an armchair physics&chemistry nerd, so I've really enjoyed the whole package.

[@nomcopterlabs]

Another great one - honestly some of the best content on KZbin. Love these collabs and seeing how some of this advanced glassware is made!

[@AdvancedTinkering]

Thank you so much!

[@flomojo2u]

Just wonderful! It's so cool seeing someone really talented blow glass, all the deft, precise movements are hypnotic. I've tried it again after watching some of your videos and it was quite frustrating trying and failing to do very basic things. Your work isn't perfect, but it's miles beyond anything I could hope to do. More please!

[@AdvancedTinkering]

Thank you! The key is practice. I wasted so much glass trying to improve my joints and they still look horrible compared to something a professional like Johann makes. But at least they work :) I will try to make another video with Johann. Maybe I can convince him to help me build a beautiful NaK fountain.

[@That_Chemist]

I would totally watch more glassblowing videos

[@leevv1679]

i enjoy these kinds of collaborations a lot, keep up the great work

[@AdvancedTinkering]

Thank you! I'm just thankful that there are people willing to invest their time to show me new and interesting things! Without them, those collaborations wouldn't be possible.

[@aaronclair4489]

Stunning. Excellent. Precision glassblowing is really subtle and hard.

[@edgeeffect]

I love glassware and seeing it made and made well makes it even more magical.

[@pihop]

More of this! I'd love a video on how to make one of the gas filled tubes/rods/wands at the end of the video. Specially how to fill them with gas and sealing them!

[@chuckvanderbildt]

Those discharge tubes are spectacular

[@AdvancedTinkering]

Yes, they look lovely!

[@TheZombieSaints]

I love watching glass blowers/makers do their thing. Beautiful video, thanks heaps 👍

[@DEtchells]

I’ve always loved watching glass blowers work & love scientific glassware. Yes, more glassblowing videos, please! (I was a little surprised that you could get away with putting the tungsten electrodes straight through the glass like that, I always thought you needed to use invar to match the thermal expansion properties of the glass.)

[@elitearbor]

Mesmerizing skill on display!

[@vaheakli4551]

Beautiful! Now I want to do glassblowing harder than anytime before☺️

[@Ryan6.022]

This is truly amazing to watch

[@AdvancedTinkering]

Thank you! :)

[@williammorris1763]

We need more videos on scientific glasswork. Keep it up! 🔥🙌❤️

[@WaffleStaffel]

I've always wanted to try growing crystals using deposition, I'm very much looking forward to your next video.

[@reedpetersen]

Very cool-- I didn't know you could make Kwik Flange fittings from a glass tube.

[@steejans]

This is absolutely awesome.

[@joeflosion]

So cool! Great music too. Glad I recently found your channel!

[@terrydavis8451]

Awesome getting to see the scientific side of glassblowing. I have only done art, and pipes. Ive been blowing glass for close to 8 years and he has to be the smoothest at rotating the work by hand and he uses some techniques that are totally opposite of how I or any other bongmaker would.

[@AdvancedTinkering]

Thank you! Yes it's a joy to watch Johann work. But doing art and pipes is impressive too. I have seen some videos of people making pipes in shapes that are just mind blowing.

[@torydavis10]

I have to agree that the two approaches are truly completely different animals. Being trained scientific, I never was any good at nor could comprehend the things pipers do with weird unhappy thick lumps of glass and sharp spots where it looks cool and different colors with different coe and viscosity, any time I tried to get fancy like that I would make a tangled ball of twist or heat cracks. I could make whatever shapes I wanted of consistent thickness and consistent glass though. Edit: Had to doubletake...what are the odds? Tory the scientific lampworker and Terry the bongmaker, both Davis.

[@terrydavis8451]

@@torydavis10 LOL, yeah mixed COE is worst. The colors are all 33 roughly lol. Some of the colors with aventurine in them really dont like to be encased deeply. Which is a shame because dark sparkly colors look best under a large dome to magnify the sparkles. God I remember someone leaving soft glass in my shop to mess with me. It was a mess. I had to build my own polariscope but they dont work with opaque glass. You think cracks are bad waiting until you use the heavy metal crayon colors. The Cadmium yellow is the worst about boiling in the wrong flame. You have to constantly switch between an oxidizing flame to a reducing one depending on what color or if you are adding gold or silver fume.

[@torydavis10]

@@terrydavis8451 dude yellow sucks, not only does it boil but it seems super brittle even when unstressed, and anything on the yellow-red spectrum turns fire truck red if it's even a little warm and you can't tell what you've put where. I got a lot of mileage from cobalt gold and silver when I wanted to play with implosions of make a pretty pipe. Also, I hope whoever left soda-lime in your shop gets fleas.

[@terrydavis8451]

@@torydavis10 Oh yeah it was so aggravating....I have totally messed up a pattern by putting the wrong color down because I could not tell the crayon colors apart.

[@EvocativeKitsune]

I just subscribed, you're a real chemical artist.

[@AdvancedTinkering]

Thank you! I appreciate it!

[@iBlue0riginal]

I am amazed.

[@HomeDistiller]

Also, adding a glass bridge joining the 2 electrodes will help stabilize the feed throughs in the glass, or if the spacing is right use a ceramic terminal block on the ends of the electrodes. They are normally fine in a vacuum

[@1hestick]

love your work man

[@alexandermarsteller7848]

If having a viton O-Ring works for the reaction, you could try using that for a feedthrough. Instead of fusing the electrodes to the glass, you make a smooth glass surface with 2 tiny holes. Then you put a sheet of viton on top. Lastly, you pierce the electrodes through the viton. This could produce a reasonably vacuum tight seal. If the holes are the right size, the atmospheric pressure will push down an seal it well, even without a clamp. Bonus feature: it's also an overpressure relief.

[@justus1995]

i want that burner! i have absolutely no use for it but it looks so sick

[@AdvancedTinkering]

It's the Bethlehem Bravo if I'm not mistaken. It definitely looks awesome. But my oxygen concentrator would not even provide enough oxygen for it.

[@Biokemist-o3k]

Beautiful gas discharge tubes!!!! I need to build an oxygen machine to feed my glass blowing habit...

[@MyProjectsTV]

11:24 You can see that the left tungsten feedthrough, has more of this yellowish golden color. And that's what you want to have it vacuum tight. I still have no idea how to do this with thicker tungsten wire/rod. But I also only have pasic tools 😅

[@AdvancedTinkering]

At this point I am very unsure about the proper color of a tungsten to glass seal. :D I've read it should be cherry red and other times it is stated that it should be golden.

[@MyProjectsTV]

@@AdvancedTinkering I think in my early attempts I tried it with cherry red seals, but they never worked.

[@boiwithskillz]

This was amazing!! I really appreciate all your content, dude. 😊 I wish there were more lab glassware how-to videos on KZbin. Did he have to anneal after all that?

[@AdvancedTinkering]

It would have been best to anneal the parts but we didn't do it. There wasn't enough time and he only has a fairly small kiln at home.

[@tek4]

Spot welder can be easily made from a transformer out of a microwave. Ehat ypu would have to do is use some large cables and make 2 or 3 wraps around the secondary side. The thinner wire side, is tye hogh voltage out of the transformer and van be cut out using a chisel. I ment to make a video on my channel about this but others have it up

[@NeonPreservation]

glasswork? check. high vacuum? check. chemistry? check. subscribed? check! thanks for the excellent content, looking forward to more! 🙂

[@AdvancedTinkering]

That's funny! I watched your "making my first neon tube" video and others a while ago when I made the cesium vapor lamp. I really hope you get to make videos again when you're done moving and set up at a new location. Those are the videos youtube needs more of!

[@NeonPreservation]

@@AdvancedTinkering thank you! i am currently looking for a suitable place to reassemble my equipment... hopefully it won't be long!

[@will_der_dude]

...gorgeous🤯

[@sto2779]

10:41 - Nice. well explained on the process. I always wondered how to properly make the button stems for 10 pins to make custom large tube nixie clocks. Is it possible you can make a video showing how to make more pins in a larger glass tube? Thanks.

[@reisilva2940]

very nice, i've been planning to start a glassworking project, u have some nice tips. One thing i've been having difficulty with finding information is how to make stoppers that are vaccum vaccum tight.

[@AdvancedTinkering]

I'm not a professional, maybe Johann can help. Not sure what kind of stoppers you mean. For glassblowing to close one end of the tubes?

[@reisilva2940]

@@AdvancedTinkering its about making a air or vacuum tight stopper connections for a round flask for example.

[@torydavis10]

My two cents if I understand your requirement correctly, is that the closest thing to vacuum-tight you're likely to get (reasonably) from glass-on-glass is a well-greased ground glass fitting and mating stopper. Whether or not that will count as vacuum-tight will depend on your project.

[@reisilva2940]

@@torydavis10 that’s exactly it,I’m having a little problem in the translations of some term. English is not my mother language.

[@reisilva2940]

@@torydavis10 my difficulty is on finding nice methods for glassworking nice tight fittings with stoppers.

[@zoozolplexOne]

amazing !!!

[@wolpumba4099]

Amazing!

[@smellycat249]

That was quite the jump scare at the end when you showed the one vacuum feed through lol

[@PexiTheBuilder]

5:53 "Special holder", insides of electric screw terminal :D

[@dannesundberg4076]

real fantastik.

[@ghlscitel6714]

Nicht schlecht, Herr Specht

[@alexandermarsteller7848]

Nice video. Glass working is a very cool skill. If you only need to heat the the wire inside of a glass tube, did you consider using an induction heater to heat a tungsten filament/wire directly?

[@AdvancedTinkering]

Thank you! I had the exact same idea yesterday and I will try it. Apparently tungsten is hard to heat via induction but I could also use a titanium wire instead. Heating via induction would solve a few problems. But I have never read of it being used in the Van arkel de Boer process. Guess I will fond out if there's a reason for that.

[@TomassAfastass]

Alligator clips. For connecting the wires to the electrodes..

[@AdvancedTinkering]

The problem is, that any extra metal that is not titanium or tungsten or is not heated to ~1000°C will be eroded by the hot iodine vapors.

[@imajeenyus42]

Do you possibly have a link for that quartz tube with the KF flange on it? Would be very useful for something I have in mind!

[@AdvancedTinkering]

It was custom made by a Chinese manufacturer. I created a drawing with the dimensions and they manufactured it.

[@threeiem]

Does Johan have any social media or links to his art?

[@AdvancedTinkering]

Unfortunately he does not have a social media account.

[@muffty1337]

I'd like to see more of those discharge tubes. Und gibts die irgendwo zu kaufen? :D

[@AdvancedTinkering]

Es gibt Gasentladungsröhren mit verschiedenen Gasen zu kaufen. Allerdings haben diese dann meist einfach nur die Form einer Ampulle. Soweit ich weiß verkauft Johann seine Kreationen nicht. Falls doch, wären es Einzelanfertigungen und dementsprechend teuer.

[@chasingcapsaicin]

What wattage do you need to pass through, Very important, also pertinent is access to that uranium glass believe it or not, how ever minuscule.

[@GermanMythbuster]

❤❤

[@contomo5710]

how are those goggles called again? i couldnt really hear it out and find much on the webs

[@AdvancedTinkering]

Didymium goggles.

[@contomo5710]

@@AdvancedTinkering diddly doo that worked!

[@simonstergaard]

where did you buy your burner for glasswork ?

[@AdvancedTinkering]

The one in the video is a Bethlehem Bravo. www.bethlehemburners.com/torches/bravo They are pretty expensive. As a beginner you will also get a lot of use from a cheaper used burner.

[@esromberhane]

Slay

[@HomeDistiller]

I built myself a glass lathe and I couldn't produce anything that nice 😅 not a chance

[@AtlasReburdened]

Why wouldn't you just use copper for the feed-throughs. It's not that hard to get the proper oxide for a high vacuum grade seal, and the benefit is a pliable material with higher conductivity that can be soldered to on the outside, and easily crimped or spot welded to on the inside.

[@AdvancedTinkering]

The coefficient of thermal expansion is too different for fusing a solid copper wire to borosilicate glass. So it would have to be very thin. A copper plated nickel-iron wire or a copper tube would also work as far as I know.

[@AdvancedTinkering]

The coefficient of thermal expansion is too different for fusing a solid copper wire to borosilicate glass. So it would have to be very thin. A copper plated nickel-iron wire or a copper tube would also work as far as I know.

[@wcglass]

Does Yohan have instagram or other social media?

[@AdvancedTinkering]

Unfortunately not. Of that changes in the future, I will link his socials in the description.

[@yourfuneral]

does Johann have any kind of platform?

[@AdvancedTinkering]

No, sadly he does not.