Ph.D. Chemist Explains 2-Part Epoxies. Adhesives, Milliput, Green Stuff, Kneadatite, Super Glaze.

[@olidevro3609]

Whether it’s hobbying or chemistry, you really are an expert at jamming plastic bits together

[@Allenonymous]

LOL

[@valuedhumanoid6574]

The cat cleaning your hand @ 4:10 is what makes it all work. That sandpaper tongue prepping the surface is what makes things stick correctly. True story

[@ICanDoThatToo2]

But does it need to be a Warhammer cat?

[@Nets-nutsBr]

She/he was kissing him!

[@MrBIRDMANFINCH]

I honestly saw the title and dropped everything I was doing. This is a side of the hobby I'd love to see more of to further stoke my love for science. I'm mid-break from college, going for Mechanical Engineering, and need stuff like this to keep the fire burning to make sure I get back to it.

[@benjaminkingsley3902]

I was mid Chem class and stopped to watch

[@GoobertownHobbies]

@@benjaminkingsley3902 This is the way!

[@benjaminkingsley3902]

@@GoobertownHobbies Molecules and bonding is fascinating to me and fun until they make you do all the math

[@josephpalasz5226]

@@benjaminkingsley3902 I'm mid PhD qualifying exams in chemistry and I stopped to watch

[@benjaminkingsley3902]

@@josephpalasz5226 Nice!

[@Aecellus]

I love the science videos, partly because they're interesting and Brent explains them really well, but partly because you can see how much Brent loves and is enthused by chemistry. It really comes across as a passion, not just a profession.

[@GoobertownHobbies]

:-)

[@MadScientist267]

Things suffer when it's only about the money.

[@Veles343]

Video title: makes sense My brain: where's part 1?

[@ADKGlobetrotter]

Fantastic video!! An idea: I've always wondered what the chemical difference between paint and primer is. I know some of the experiments you have done have to do with primers, but I think a deep-dive into them would be an awesome way to learn more about them!

[@ZappyOh]

I second that.

[@collegeoffoliage6776]

This!

[@dmchodge]

What he said.

[@ChayComas]

Upvote

[@Thorstenator]

Yes. Please. Do it!

[@sirrathersplendid4825]

And for our next lecture: would love to know about the chemistry of acrylic paint! So many mysteries: pigment particles, acrylic resins and mediums, flow-aid, the difference between drying and curing, retardants, how do acrylic inks differ from acrylic paints?

[@MichaelAlthauser]

I'd be interested in this too, actually. I know all the various companies have slightly different mixes to their paint. P3 if I remember right is specifically formulated for wet blending, for example(and that's probably why it airbrushes so well!).

[@emilydowd-arrow3751]

Great suggestion!

[@joecliffordson]

@@emilydowd-arrow3751 yes please

[@Broeckchen]

Kind vibes, gentle voice, easy explanations, curiosity, amazing background art and a videobombing cat.... sign me up!

[@GoobertownHobbies]

These dang cats ;-)

[@mystrangebrain9240]

I don’t know what it is but I love how chill you when the world is on fire yet you are chill and I love your chill voice

[@Paplok]

I only wish Brent was less monotonous with his voice, I know it's kinda silly and I feel bad about it but I really can't get used to his way of scripted talking D:

[@figrollin]

I think i might add Dr Goober as an NPC in my D&D world. Wood elf. Long auburn hair. Wizard. But with super high wisdom, or Wiz-dom, if you will. He'll be the only person that can make the outrageously strong "Sovereign Glue" from the DMG.

[@DavidHesselfeldt]

Kitty sleeping in the indomitus box is wholesome soul food

[@GoobertownHobbies]

so sleepy!

[@philgee486]

So satisfying to listen to the language of chemistry and as ever, root for the lone pairs. The whole discussion regarding bases with multiple bonding sites at either end, yet still avoiding the terms polymer, or polymerisation was oddly compelling. Kept waiting for it like an expected character bursting into a story. A tip, milliput is a pretty inferior sculpting putty, but once kneaded can be softened to a buttery paste with isopropyl alcohol (propan-2-ol whilst we're speaking chemistry!) and a good bit of stirring. I'll go all the way down to a brush on surface texturing liquid that'll do rust, dust and corrosion, but also a couple of touches with a fingerprint and it turns flat shiny plastic into coarse cloth weave. Revolutionises lazy sculps and ages/weathers metals for custom stuff. It totally outshines that as a butter though (millibutter) it's awesome for gap filling - you'll just never go back to anything else. (Huge thanks to Marco at NotJustMecha for these utter game changers - guy's another genius) Paste it in, fit and then smooth with a wet paper towel, add more for really ill fits and your conversions, even build it up on an armature. The butter will last days in a screw topped (spice) jar with just a bit of extra alcohol in there.

[@soberirish83]

I’m writing this on my timesheet as webinar training today. Thanks Brent!

[@GoobertownHobbies]

hahaha, wooo!!! :-)

[@transmitterguy478]

Great video, Brent. I will pay more attention to how accurately I mix my epoxies. I sometimes don't get a hard result like I like to see. I will weigh my halves now to make a better bond.

[@kl1thedominion]

I don't know how well these videos do in the grand scheme of youtube metrics, but I'm certainly among those who enjoy the crap out of these chemistry videos. It's great knowing how the various chemicals in our hobby work.

[@GoobertownHobbies]

They get relatively low views, but they're always worth it for me to make, glad you like them! :-)

[@okafka5446]

@@GoobertownHobbies Thanks for the video, could you explain why it is that epoxies only set properly in smaller thicknesses?

[@briancasper399]

@@GoobertownHobbies These chemistry videos are fantastic and I've learned from them. Thanks!

[@SpinStar1956]

Thanks! ❤ I’m RC modeler and one of the things we do is use 2-part epoxy thinned with alcohol to fuel-proof airplane wood from methanol, gasoline, oils and nitromethane-works fantastic! 😊

[@linsonas]

These are my favorite videos of yours. I'm not a chemist, but I can appreciate the explanations and understand a fair bit of what you say with only a college freshman level of chemistry education. Thank you so much for combining the approach of an academic with the interest of a hobbyist in these videos!

[@Kreydus]

Brent! As a fellow chemist i really like that you bring a little bit of science and knowledge about our hobby to others in a really understandable way!

[@ryansargent661]

This was a very satisfying video. Science is great, hobbies are great putting them together is awesome. Definitely like the change of pace, don’t stop your modeling/painting videos but I’m definitely excited about more of these. How about a video on why paint can adhere differently to different plastics/materials.

[@sandpirate1662]

I'd love to see a video about that too!

[@emilydowd-arrow3751]

Oooh, ditto!

[@etle113]

Completely agreed paint and glue adhesion to surface would be a great subject. Adhesion promoters would also be useful.

[@leovenier1011]

You have to listen to every word you say and break down each meaning not many consumers will know what plastersizer are excellent video you have to watch over and over to learn full content Thankyou

[@DampeS8N]

Only someone with a Ph.D. would describe looking through patents or other paper research as an "easier way" over the 30 second process of mixing 4 things together.

[@stephenspackman5573]

No, turns out a master's degree is already enough to make you lazy :).

[@stormycatmink]

@@stephenspackman5573 Or 20 some years of engineering and occasionally mucking about in the patent waters. Once you get used to it, you get quick with bringing up google patents and finding a lot about all kinds of things.

[@georgesheffield1580]

Search engines make this quick and easy .

[@nickandersonco]

@@georgesheffield1580 a search engine brought me to this video lol

[@BoB-Dobbs_leaning-left]

Only someone with a Ph.D. would describe looking through patents or other paper research as an "easier way"" So, not just believing what Mike200 said on Facebook then?

[@minihobbytherapist3473]

"Epoxide groups are reactive and ready to form a new bond." Just like me after a bad breakup. Thanks for the science Dr. Brent!

[@thomasclark3167]

I needed this right now. Thanks for being there to help calm me down from my anxiety 🐱

[@GoobertownHobbies]

It's gonna be a great week! :-)

[@Kaiyanwang82]

You are a good teacher. From someone with a PhD in life sciences.

[@JonSteitzer]

I was googling this just this weekend, I've worked with them my whole professional life and I still didn't know what they truly were! Thanks Brent!

[@GoobertownHobbies]

nice!

[@ag-om6nr]

Excellent presentation ! Your passion for explaining complex chemical reactions to laypeople is incredible ! Thnx !

[@MidnightSkyGames]

As a fellow science loving nerd, I really appreciate your chemistry videos like this one, Brent! Keep them coming!

[@GoobertownHobbies]

right on!! :-)

[@yesitsluke2869]

Brent, with you being a Mayor, Chemist man, and mini painter I feel you are THE most inspiring person ever! I can’t wait to bring this up when I take Chemistry class!

[@samm7322]

Yes more hobby chemistry in my brain face. Would love to know about thinners vs flow improves and how/why they affect drying times.

[@fantou2285]

This I would love to know more about, explained by HobbyBobRoss Brent. Because flow improver is used to transfer paint from a container to another but I don't know how it impacts water thinning needed afterwards and how paint would react to a wet palette.

[@garylee4315]

There was a hobby cheating episode about those 2, and others. Not sure if that helps because no molecules, but had examples of when to use each.

[@samm7322]

@@garylee4315 Thanks. Gary, I love Vince's content. Will look it up. Still be cool to see the chemical reasons. I find the deep dives on all the gear super interesting.

[@fantou2285]

Did not know about it, just saw it, super interesting! Even more interested into Brent explaining thoose bonds and surface tension stuffs!

[@edskodevries]

I'm a calligrapher, not a model maker, but love these videos where you analyse the science behind common art supplies. So hard to find that kind of information! Much appreciated. If you were ever in the mood.. a "what's the chemistry behind different kinds of inks (Western fountain pen ink, Chinese calligrapher ink, indian ink, walnut ink, ...) I'm sure would be very welcome in the calligraphy world :)

[@degghi]

Brent, you are a fantastic human being, a great hobbyist and also an amazing chemistry teacher! Thank you for this video!

[@foreverfornever1124]

Two years later and this video is still handy, thanks Goobs! Found what I needed

[@vaikesillatalu6811]

Never been so intensely interested in chemistry before in my life! That was a fantastic watch and you made it so easy to understand. I would love more videos like this! 😍

[@patrickkoch3617]

I liked how you pointed out in your video that in order to achieve a user friendly mixing ratio of 1:1 manufacturers use some form of filler material in the hardener component. If you start looking into epoxies that are use to bond glass or carbon fiber, those filler materials in the hardener are apparently undesirable (added volume and weight). For the use with composite materials you find that many epoxies have a mixing ratio of 3:1. At the same time it seems that the viscosity of the uncured epoxy is higher to facility better saturation among the fiber material the epoxy is supposed to bond. Super interesting video. Learned a lot and may need to watch parts of it again to understand things better.

[@leifdoerksen8180]

As a high school chemistry teacher who loves to nerd out about organic chemistry, as well as having an interest in miniatures, I loved this video. Mostly very easy to understand, even for someone without a chemistry degree. I love your videos. The only part that I felt was I little inaccessible was the explanation at 11:40 or so. Probably could have used a bit simpler language. I love that you are getting this fascinating stuff out to an audience that wouldn't normally look into it, and so I only say that because I want to see more content, and would love to see it stay really accessible to people without a chemistry degree.

[@GoobertownHobbies]

agreed! teaching is always a fine line of what to include and what to simplify- thanks for watching :-)

[@kingcosworth2643]

Yes, this is the part I got a little lost. I am absolutely not a chemist, and I'm still trying to work out the definitive difference between a covalent and an ionic bond, as technically they both utilise electrons.

[@FragorCaelestis]

This is very very very very very very useful! I've studied about it by myself years ago but I was lacking a bit of knowledge, with this video everything is more clear, thanks!

[@sandyakabatteriehuhn]

Yay, hobby science lecture in Goobertown! :) But... What about magnets? How do they work? :D

[@annikahstebben4425]

That's a physics problem... So ummm... Magic

[@sandyakabatteriehuhn]

@@nicholasgordon4999 Thank you for that! My comment was actually based on a meme based on a ICP song, but that's the beauty of the Internet. :)

[@zamnodorszk7898]

Magnets are super incredible! I took a module on magnetism in university and they are indeed magic in three different forms! What we call “magnets” are ultimately just ferromagnetic materials with all their magnetic domains aligned to create a net magnetisation, but we use the best ferromagnetic material (Neodymium) to do it. Also, every material in existence experiences a magnetic response, but depending on the election mobility will either temporarily align with a magnetic field (paramagnetism) or oppose it (diamagnetism) the difference is that they lose their magnetisation when the applied field is switched off, but ferromagnets undergo “hysteresis” whereby the alignment is (effectively) permanent

[@dougsundseth6904]

Traditional sculptors often use mixes of various epoxy putties to get different characteristics. Kneadatite A+B (greenstuff) has a consistency like stale bubblegum through much of its working time and a very long working time. Apoxie Sculpt (or Magic Sculp, which seems virtually indistinguishable) has a softer working consistency, faster cure time, and a harder (and easier to sand or file) final result. A mix of the two seems to be pretty popular for miniatures sculpting. Thanks for the information. This was really entertaining and I'm sure I'll find a way to use it in the future.

[@GoobertownHobbies]

that totally makes sense! Someday I'll find some favorite putty recipes :-)

[@guillimania]

I learned more about chemistry than in all my school years.

[@richieloneelk]

You do a great job of explaining the science of epoxy. I’ve wondered why the mixture puts off heat as it cures. Sorry if someone has asked that already. Thanks!! Love your channel!👍

[@AzraelThanatos]

For the percentage mixtures, you ought to wait longer and test again after a few days. Some of them just harden at different rates with the ratio off. I know people who vary the mixes with certain transparent epoxies for different effects such as mixing in things you want suspended in the end result or for shaping it in different ways

[@GoobertownHobbies]

interesting! thanks for the idea

[@ianide2480]

Might add temperature into the mix as well. More heat = faster cure time.

[@vickygoldsmall1172]

Just started my first year in my Organic Chemistry PhD and this video may be one of my favorite hobby videos and at the same time one of my favorite chemistry videos. Incredible job

[@paralipsis]

This was a super helpful video and really appreciated. Thank you! Next request: PVA

[@the1111code]

I’ve been working with epoxies for over 26 years in my profession. Great to finally understand how they work. Nice job, thank you sir

[@igelkott255]

This is an excellent description of how epoxies harden. But what makes them glue parts together? How do they stick to things?

[@GoobertownHobbies]

it oozes into the cracks and imperfections on the parts before it hardens up. the actual adhesion is more physics than chemistry.

[@emilydowd-arrow3751]

NOw THAT was my unanswered question as well. I thought that maybe they bonded somehow w the materials, but then the molecules seemed to stabilize without doing so. This helps!

[@fat_pigeon]

@@GoobertownHobbies That applies equally to other adhesives, so it doesn't explain why epoxy bonding is often significantly stronger than with many other adhesives.

[@mangoauthority2897]

This single object video made more sense than all my school and uni chemistry classes combined. Kudos for explanation, sir. Please keep 'em coming.

[@RLBndR]

Could you do a comparison of polyurethane, varnish, laquer, and acrylic medium?

[@davydatwood3158]

This scientific explorations and explanations are certainly my favourite part of your channel!

[@funkmeister1546]

my Chemistry homework is paying off; I actually know what you are talking about!

[@GoobertownHobbies]

wooo!!!! :-)

[@TheDorleas]

I Just Love zu Listen to your voice. When its about our all favourite Hobby, good. When its about science AND our Hobby: the best!

[@Tristanosaurs]

Woohoo! Epoxy science! Guess I am up for another half hour.

[@migalito1955]

Excellent. I am a retired theoretical math person & I must say seeing the role of Euclidean geometry in physical structures at a molecular level has been enlightening. Too bad we all could not of majored and pursued thru the graduate levels every field of endeavor. Gosh what insight that would bring.

[@ogreman2229]

You’ve done videos on paint and adhesive, I think it’s time for a hobby science on solvents or paint thinners. I remember your video comparing paint strippers, maybe a follow up on how/why those specific products work.

[@craigturpin1731]

I second this idea. Love these sorts of videos.

[@loganhillman3926]

Science Brent is my favorite part of this channel! I refer to your pigment and diy videos all the time.

[@bettsdn]

I wish Brent would have been my High School Chem professor.

[@liquidusblue]

Really nice to see the chemistry mixed to an everyday example. Really helps understanding when it's applied. I'm a materials engineer, knew things about how epoxies functioned and didn't outgas but it's fascinating to see the chemical nuts and bolts. This was a really nice bonus as i'm just searching to see some ways to use milliput to fill and airfix model F4 Phantom, but got double educated!

[@funkybristles3168]

Alternative Title: Brilliant Man with Perfect Hair Proves - Chemically - that Magnus Did Nothing Wrong

[@jamesguinness6209]

Every once in awhile a single tidbit of info. can answer a dozen questions. Thanks

[@TheHobbyGrotto]

Love me some hobby science!!

[@kulovicz3152]

I must say, sir, you really look happier than usual when explaining to us mortals secret behind this amazing mixture. Thank you.

[@luigiboi357]

Goobertown is a town of Fun AND education!!!! Thats what happens when the governor has a Ph.D. hahahah thanks as always Brent sir

[@willmendoza8498]

These science of the hobby videos are my favorite

[@German_Dubinin]

Thank you for another great video! One thing bothers me: shouldn't you be using respirator while working with epoxy resin? I mean, it says in MSDS that product vapors can cause headache, nausea, dizziness and possible respiratory irritation.

[@GoobertownHobbies]

I experienced none of these things :-) Most respirators protect against particles and are less good with vapors, If you're experiencing headaches working in an open space with more ventilation is the way to go.

[@fat_pigeon]

Also, epoxy resins often use relatively large (=> less volatile) molecules, so fumes are less of an issue compared to some other resin types.

[@InverJaze]

It makes a nice change for an explanation that does not dumb down the chemistry.

[@bionicletech]

Me the whole time during this video: damn...I didn’t know I could take an entire chemistry class after high school

[@kevinengel2134]

My problem in school was always with the discussion of pure theory. I love learning by examining something practical, that I use all the time. Thanks for the great video

[@apollo3604]

Brent I want to see an episode about how unhealthy the fumes from 3D printer resin is.

[@GoobertownHobbies]

Sadly I don't know anything more than what's listed in the SDS sheets... If I ever gain more insight into this I'll let you know!

[@DFloyd84]

They definitely aggravate respiratory conditions like COPD. They also stink.

[@tentmaran]

Thank you so much. Working almost 40years with epoxy in boat building.. and not truly understood the chemistry...so thanks a lot... Simple example I was told and told others.. A component have so many arms that need to meet the so many arms in the B component.. wrong mixture makes for arms not finding a connection .. but thanks again this explains the true prices. Wel explained and a great video👍👍😊

[@GoobertownHobbies]

that simple explanation is basically correct! It's nice to have a bit more detail though :-)

[@footrot17]

Alcohol molecule looks like a dog, man's best friend

[@Ernzt8]

I had the same thought. I wonder if Brent can make balloon animals too

[@TheKlabim]

i had to wait from upload until now to watch this video and it was totally worth it! I said it some time ago and I will say it again: if Brent was my chem-prof in medschool I would've done much better in chemistry

[@Artemis.97]

That was a fun and informative video. But now I'm wondering: Where did you get all those hydrocarbon models? Just saved away from your college days?

[@GoobertownHobbies]

Hehehe, dumpster diving at the chemistry department!

[@curtmayer1070]

Very clear, great tone. Not dumbed down, and not too technical.

[@CrovanBlaze]

And here I was thinking knowing about valence electrons wouldn't be useful to me.

[@chemgeektim]

Good ole VSEPR theory! Valence shell electron pair repulsion to help determine molecular shape.

[@Sanorace]

I've been listening to you to help with my voice training. You have a voice that remains masculine even when talking excitedly and I think it's because of the way your voice modulates a lot during a sentence to put emphasis on different words but always ends at an equal or lower note than it started. It's helping a lot.

[@GoobertownHobbies]

Hehehe, uh happy to help? good luck with your training!

[@jherazob]

Interesting! How about single component ones, like that casting one from GSW that is just a powder mixed with water, and given that you can't get the safety sheets from them?

[@GoobertownHobbies]

I don't know about that product, but I'll look into it! :-)

[@gertrudygar9355]

Used to study and work in soft matter physics, and an avid mini painter. Absolutely nothing is more satisfying than this video series.

[@GoobertownHobbies]

:-)

[@ibramgaunt885]

For modelling molecules i can recommend the app „molecular constructor“ it is really easy to use and has many features. And it is free.

[@ibramgaunt885]

Also, i notice time and time again how much time and effort you put into your videos. From chemistry classes in school I know how annoying it can be to disassemble these big molecule models to store the parts in the box....

[@dickJohnsonpeter]

I downloaded it. Not being a chemist myself all I could do was make random molecules and look them up to see if they had been synthesized before and what they did but I can see how 8t would be helpful for someone who knows what they're doing. Edit: they need to really expand their library of molecules.

[@prusian]

I am a pharmacist, and I have the luck to know quite a bit of chemistry. Your explanation of how the epoxy resins work is absolutely fantastic. I like specially how you stressed that shapes matter. And, since you are so didactic and explain everything from the very basics to the desired degree of complexity, I am sure everybody will be able to follow your explanation, and enjoy it, even if they do not have a background in chemistry. I want to congratulate you for your excellent channel and for this video in particular. Thank you very, very much!

[@christheleper4378]

Out of curiosity, when you mixed the milliput and green stuff parts together, were the 2 correct combinations noticeably different from each other? As in, was one more like green stuff and one more like milliput?

[@GoobertownHobbies]

Pretty similar actually! I think they get a lot of their feel from the clay + talc.

[@jesse-got-dolphins-into-heaven]

so i generally love your videos, and i feel your one of a hand full of artists for minis not selling something.

[@lukemcdonladson6648]

Science Drop .. Yay ✌️😁💚

[@garyfaust6769]

Great to hear about the chemistry of epoxies and paints!!! Thank you!!!

[@solidzaku2]

Guy spends all day handling paints, solvents, and epoxies. Cat: Haha, tongue goes *mlem*. Also, glad to see something actually finding some enjoyment from the Indomitus box. And yes, I'm referring to the cat.

[@brianpeers]

I have used two part epoxies in my woodworking for a few years now. Good stuff but can be tricky to get just right. Bubbles mostly :( Thanks for the in depth explanation. However my main pleasure in this video was your ginger assistant. Pleasant memories came to mind of my past cat who would sleep in a cardboard box in my workshop. A good friend was she.

[@rossknowles5608]

id react too if someone told me i had to be a triangle

[@GoobertownHobbies]

i know right?

[@stco2426]

Brilliant. Good to know to aim for the 1:1 when this is asked for and all the chemistry, too. Many thanks.

[@KleineKassiopeia]

So this is what being a hobby-scientist means.

[@Auridus]

This is one of those things I wouldn't think about if you didn't bring it up. Thank you for teaching me!

[@TheTartanTaylor]

This poor guy was an academic before the plastic crack got him. He can't help but think about plastic all day long. I've heard he salivates when he smells burning bakelite.

[@Skybutler70]

Wow... how science can actually make you happy!!! So well presented!!! So clarifying!!!

[@dirtmcgirt6531]

Stop it, just stop it Brent

[@trcwm]

Dr. Brent

[@gerardoG10]

right on ! Jus the exact video ive been searching. The search is SATURATED with floor epoxy stuff 🙄

[@GoobertownHobbies]

hehehe, it's probably the same chemistry, but still not the content that you were probably looking for! :-)

[@Merlin3189]

About the clearest and most helpful explanation of epoxies I've seen so far. Hope there's more to come perhaps.

[@saykrus]

I love when you get all chemisty! Please keep on learning and keep on teaching! :)

[@exmortisminiatures3170]

This is really informative, and something I think most people take for granted. Plus your presentation of the science behind it all makes it really engaging. Thanks

[@lusher00]

This should have been a two part series. Things would really solidify.

[@fat_pigeon]

It would help the knowledge stick!

[@jrdchemist]

I no longer work “in” chemistry, but am always looking through that lens. Got a few flashbacks of O-chem that weren’t all that pleasant, but still love the video - thank you!

[@RandallAndStrat]

If this video had been around the first time I took organic chemistry in college, I might not have had to retake it! Very easy to understand the technical aspects, and a fascinating subject I didn't know I had questions about until they were answered.

[@bubblewrapfred]

I was looking for a review of a particular epoxy product available in Australia. I saw “goobertown” in the results and knew this wasn’t the video I had been looking for, but was the video I actually wanted but hadn’t bothered looking for because I didn’t expect to find this information on KZbin! Thank you for the amazing content ☺️

[@garethlewin1193]

Thanks for this! I'm the guy in discord that a few months ago asked for more of these, so once I saw there was a new one I jumped for joy :)

[@GoobertownHobbies]

hehehe, there will be more!!! :-)