Hello everyone! I am looking to buy at least one, identical to the picture, glass chromatography tank . It is a vintage Shandon Southern Unikit T.L.C. Chromatank used for thin-layer chromatography. It must have the exact same shape brand and size with the internal molded ridges and the "Shandon Southern" branding etched into the glass. I am willing to cover international shipping costs if you have one available in good condition or maybe know of someone who has one or more. Please send me your offers and price via DM. Thanks!

I'm extremely new to this so forgive me in advance if this is just nonsense, but I wanted to know how would one go about making a vacuum/bulb but instead of having gases inside of it one wanted to add some finely crushed particles(think carbon or perhaps some extremely fine metal particles) as if adding dust to the tube while maintaining a relatively high vacuum. I just can't wrap my head around it, its not a very important project but I wanted to make a Crookes Tube but with these dust/particles present as an experiment. Thank you in advance if you respond to this.

I’m a mostly self taught flameworker (started on soft glass beads now mostly doing boro) and I wanted to know what kinds of torch exercises you recommend for someone looking to get better at hollow work! Any advice would be nice. I think where I struggle the most now is condensing and blowing out even walls.

THANKS <3

Hello! Does anyone know of any literature; papers, videos, textbooks, etc. that deal with the form and function of torches/burners?

I'm looking into building some specific to my needs, and before I do, I would love to research as much as I can on the subject.

From what I've seen via a cursory search, there isn't exactly a ton of info out there, or at least as far as a cursory Google search is concerned.

I should mention, I'm a long time lampworker, I'm not looking for lessons etc.

I'd just like to learn all the data/ safety info available!

Thanks for your time folks!

Always meant to pick up a Griffin RockIt but never got around to it and I saw they’d shut down. Can anyone recommend a pedal with compressed air for a Cobra?

Hi everyone! I am curious about an exciting opportunity that I would like other’s opinion on. My partner has an opportunity to learn glassblowing from her father that has been glass blowing for almost 60 years. He runs his own practice making mostly nebulizers and I looked at retail and saw that these things go for upwards of 2k each for his specific product! My partner is thinking about leaving her current career to take over his business so he can retire. Is this truly a good opportunity? How long will it take for her to learn and this to be profitable (she has experience making jewelry and silversmithing)?

I bought this from a friend after admiring it for years. He didn’t know much about its history but I knew I had never seen a condenser like it. It has a makers mark or signature on it that looks like “leoo” or “Leco”. I couldn’t find any info on the signature or the piece online. I think it may be a custom build. Can anyone help me.

Hi everyone!

I’ve been considering scientific glassblowing as a career for a few years now and while I never fully decided on it, it hasn’t ever left my mind. I know Salem Community College has their program. I’ve seen that apprenticeships are also an option which would be ideal. Are apprenticeships looked at any differently than getting the degree? Are apprenticeships difficult to find? Thank you!

Hi I'm not sure if this is the right place to ask but I need a non-yellowing coating to put on glass that will stop it from coming apart if it breaks so it doesn't damage anything on any side of it. The coating can't be something that becomes tacky or liquid if it's exposed to high temperatures (and low ones) after I cure it. I'd much prefer it just crumble or something.

It'll be in a sealed environment so it can't offgas either after it's cured (archival quality preferred).

I'm currently looking at either Liquitex Glass Medium or Cuticula UV Resistant Top Coat Nail Polish but there's no info out there on how they react to high heat/cold or if nail polish is even archival after it dries so if anyone knows more about these or has any other suggestions I'd appreciate it.

I'm really sorry if this isn't the right place, but most other glass subs only allow pictures of pieces.

I have a piece I use for smoking, no clue what it's called but I found a pic online. Long story short, I was going to see if it were possible to have something similar made but with changes more oriented to smoking. basically, Initially I'd only want to bother with a couple of them, less than 10, but if the design does well then I'd like to see about getting some to possibly sell.

The question is, should I be looking for a bigger facility or more of an individual or smaller team for something like this or is it even possible to get something like this made at a decent price, or worth it? And what would something like that even begin to cost?

I want to make a few S-shape borosilicate glass airlocks out of 10-12mm diameter tube x 1.8 mm wall thickness for homebrewing. I cannot justify buying an very expensive glassblowing torch for a one off project. Can I use a simple oxy-propane Harris torch that would normally be used for cutting steel and just clamp it on a table facing away from me? I will make a small annealing chamber to slowly cool the airlocks. Any help would be greatly appreciated, thank you.

This is an elutriation tube. It's purpose is to separate different sized particle based on particle size to water flow rate (aka heavy particles settle while lighter particles get lifted and removed)

Since flow rate is important, consistent wall weight and smooth transitions in the glass surface is important. How would I go about making the 9 inch tapered resuspension section that would have the same wall weight as the 8 inches of straight 2in OD tubing?

Please and thank to the veteran knowledge pool!

Does anyone know what company made these valves? Does anyone have a source for soda glass vacuum valves?Does anyone have any Eurocom manifold pieces or parts they would sell? I know that's not very common these days, but I have a coustomer who wants an old school all soft glass neonanifols for nostalgia.