Glues and Adhesives Tested on Carbon Fiber for Strength

[@dennisl7549]

Thank you. I just bought a carbon fiber motorcycle helmet and I need to attach a plastic action camera mount for my Garmin VIRB Elite. None of the 2 sided tapes are working. I was going to try JB Weld. Glad I saw this first!

[@rob215x]

Surface prep is important. Clean both surfaces with denatured alcohol or something similar.

[@Tracer9GTRider8]

@@rob215x thank you and already done!

[@robbo580]

this is the single most excellent video on KZbin. There's no gram ounce measurements or any crap just real life testing, I love it! Nice work. no chitter-chatter no Babel just clear concise fully legible sign language his hand motions say it all!

[@rob215x]

Thanks! If one of my drones crashes, there won't be any gram ounce measurements either lol

[@FUBBA]

illBeets dat ripped left glove

[@TheAndrezaDias]

The titan's designer watched This vídeo and made his Engineering decision 😂

[@divingfalconfpv4602]

Thanks.. got arm braces for light weight quad but only one screw hole available so wanted to brace it better. Stop arm twisting vibration under load

[@LukeBockman]

ya know.... those adhesives are not meant to be used in peeling mode as they have 0 area to resist force. usually they're applied only for shear, tension and compression. just so ya know they would probably perform very differently than how your hands can feel them.

[@V0YAG3R]

@D real world conditions--- DELETE YOUR ACCOUNT

[@wmzaphod]

Thanks Robert, you've saved me a lot of time. I'm building some legs for a 450 quad - needing to clear a gimbal and camera.

[@glennedward2201]

I think the jb weld clear weld would work fine. Just be sure you glue both sides before sticking them together. There are other epoxies that don’t dry as quickly and working a lot with carbon fiber most epoxies will work well while longer drying will be inherently stronger

[@TuxPenguino]

some of the samples have a lot more compound than the others. Also, inst the surface area directly related to adhesive strength? its a really thin area being glued to that carbon

[@rashmiranjannayak3251]

Nice job you have shown every thing within 8 min. with a perfect matching music.

[@CarbonbikewheelsAu]

Great test Robert thanks, I'm about to start using EC2216 and found this video which gave some insight. Worked in composites for a long time and keep up the straight to the point content cheers!

[@thedarkriver1]

just what i needed for this RC truck job! Thanks a lot, Robert!

[@nontimebomala2267]

$60 for 2 ounces? Damn right that really should work. It should make the part and glue ITSELF UP at that price.

[@rob215x]

LOL, yeah I never said it wasn't cheap. That's why I usually use my no. 2 choice

[@ArcolaBridge]

I will be using it Devcon plastic welder to fix cracks in an Eddy line abs and acrylic copolymer kayak with carbon fiber cloth. I hope it is a winning combination.

[@mikeosinski50]

Fantastic video need to fix my carbon fiber tripod and the 3m fixed better than the manufacturer glue they used 👍

[@mooosestang]

Nice, just what i was looking for. Ordered number 4 to join two identical 4mm carbon base plates for an 8mm piece of carbon. Might do 3mm and 4mm to save weight.

[@unglaubichuberlieber8048]

thanks, you tutorial was very educational+informative, any suggestions on bonding carbon fiber sheet to another carbon fiber sheet???

[@unglaubichuberlieber8048]

this is bonding one carbon fiber sheet at 90 degree to another carbon fiber sheet, thickness is 15mm

[@MrShoji5150]

How about metal & carbon? Same result??

[@radonvon3120]

This is great the jb weld clear weld is what I’m looking for to glue my headlight trim to my carbon fiber hood! Little flex cuase of shutting hood and road vibration and the plastic trine is light so it dosnt have to be as extreme of a bond in case I need to replace it

[@slinkygn]

Late to the party, I know -- just wanted to say, you can actually get pretty good results with CA but you *have* to use a primer, just like with PP/PE plastics it is not optional! I think Loctite 7649 is the right one for CF if I recall, but you may want to call up Henckel and make sure. Should work with any CA you choose to use. $15-$20 a bottle, but it will last you a lifetime unless you're building a whole bike out of the stuff. (And you can use it for those difficult to bond plastics like PP and PE as well.)

[@rob215x]

Thank you, I'll look into the primer for CF. Good info!

[@bt7153]

I'm going to fill a gap in a crack carbon bike frame... strength is very important... Its asmall gap... do you recommend a material for this? It is on a seat stay with carbon tubes and aluminum drop outs. The dropouts are "plugged into" the carbon tube. The 1 inch crack occured leading away from the drop out. This area needs to support weight so I wanted to first fill it wth some type of structural epoxy and they I will wrap a few layers of carbon over the crack. But I need that crack filled with something strong first... any recommendations for filler?

[@David-hm9ic]

In most instances the glue did not remove much wood. The glue itself seemed to be letting go in the first three samples, indicating adhesion problems. The glue should have removed wood or had CF fibers bonded in it. I've been using epoxies for over 40 years and have NEVER seen any 5 minute product become brittle. Typically it will remain rubbery throughout its life and I've even seen it lose its bond in older models.

[@unglaubichuberlieber8048]

thanks for your demo !!! any comments/suggestions on gluing a block of carbon fibre to another block of carbon fibre at right angle to each other ??? again thanks !!!

[@DanielGonzzz]

Awesome! Thanks for making this, super helpful!

[@kevinholbrook7174]

You might want to try to do some more testing. You need to try Gorilla Weld epoxy!

[@mrdeer5585]

Thank you. By the way, have you tried E6000 glue? I have a project where I need to glue leather on carbon fiber. Any suggestion?

[@Metaldre82]

Would you recommend the jb weld clear weld bonding a metal piece to a carbon fiber bike frame?

[@rubioedwin]

Hey thanks for the video. What would you recommend to stick back a carbon fiber piece ( holds the shift cable) to the carbon fiber frame?

[@virgilhodges3991]

What did you decide to do? I have the same problem with my bike. Need to attach a cable stop after having my carbon fiber frame repaired.

[@JSTUART419]

Great video! Thanks for making this. I've been trying to strengthen a Carbon Fiber Rod by applying it with a Quick 5min epoxy. I've used Loctite Plastic Epoxy and an Ace Hardware homebrand Plastic Epoxy. The Loctite Proved to be better. But I'm really interested in trying the 3M 2216 for strengthening the carbon fiber rod, I just wonder if it'll be a better hold or if it'll flex too much .

[@rob215x]

You're welcome. Some amount of flexibility is important. If the glue is too hard, it becomes brittle and will crack. I still haven't found anything that works as well as the 3M 2216. Its kind of a pain to mix (if you don't buy the expensive applicator) and it takes longer to cure, but the results are worth the effort for me.

[@JSTUART419]

I just dropped $70 on the 3M 2216 off of amazon, high hopes for it and thanks for the recommendation. Normally I just pour the resin and hardener in a cup and mix them, then throw the cup away. Hope that method will suffice for this particular epoxy. Kind of a bad method though, so I'm open for any suggestions you may have. Also, I plan to take 1Howdy1's advice and add some powder in during the application. I was thinking grounded Iron powder.

[@rob215x]

First, I think you paid too much. Get the duo-pak cartridge from dragonplate.com or rshughes.com for $18. Then you can either buy the applicator gun (very expensive) or you can just push the proper amounts out of each tube. I use a kitchen gram scale and a paper plate. After zeroing the scale with the paper plate on it, I weigh each amount to get the proper ratio. I either do 5g and 7g, or 10g and 14g. You can tell which is which because one of the tubes is bigger than the other. Next, I would seriously try the 2216 without any filler first. 3M designed this stuff for commercial aircraft. Its a completely different level of material than anything you can find at the store.

[@NorCalWingWaxers]

thank you for the test going to use on the tubes of my Hyperion vengeance 280 the tubs aren't broken the tubs do tend to twist in the mount

[@alexanderkartsonakis]

In case of carbon fiber powder? Which one would you guys use?

[@JPFUT]

hi love your video how can i contact you?

[@ryanwatchel9809]

i have a smartwatch I need to fix housing is carbon fiber (bugatti smart watch) peice broke off where connect strap to housing. would the EC2216 Epoxy be good enough for that? its a little peice but hoping to find something strong enough

[@rob215x]

Based on how small it is and the amount of stress on it, I doubt any epoxy would be strong enough for your needs. You need a certain amount of surface area for a good bond. I also wouldn't want to risk losing my smart watch if the epoxy didn't hold. Can you order a new housing? Could someone 3-D print a new part for you? I hear the newer carbon fiber filaments are pretty good, although I don't have any personal experience with them.

[@ryanwatchel9809]

@rob215x bugatti support said will replace it for free so thankful there. Paid almost $4000 cad for the thing lol

[@Exo5432]

AWESOME VIDEO. Cutting out the BS and getting right to the info we need with proof.

[@rob215x]

Thanks! That's why I made it. I saw several KZbin videos talking about how great certain adhesives were and when I tried them, they didn't work at all.

[@warlikelaughter6230]

So have you decided which glue to use for your CFPHDF carbon fibre pure hard dance floor??

[@blueridgedsia]

Awesome, thank you for sharing this! I am curious, and maybe I overlooked, but did you use a vacuum bag on any of these or did you just brush on the epoxy?

[@rob215x]

No vacuum bagging here. I applied all of the epoxies with a brush and the CA glue with its own applicator

[@blueridgedsia]

thanks!

[@rossnoodles1293]

I'm as far as the third one (JB clear Weld?) and eff me it's frustrating to watch! I'm watching you struggle to pull it off and I'm wanting to shout at the screen: "COME ON, PULL IT OFF ALREADY!" haha. Kinda like watching someone doing something that you want to do instead of them like untying a knot in string. Grrrr. :-P Anyway, genuine question; it looks like the glue has held but the top has come off the carbon sheet. Like glueing a book to the table. If you glue the cover, the rest of the book is going to tear away and leave the cover. Doesn't mean the glue is bad. Make sense? Anyway thanks for the vid, altough I was looking for glueing carbon fibre to carbon fibre. I want to use two 'half pipes' of tube and glue it around a wire so it's as though I passed the wire through a tube...

[@rob215x]

I was using very thin carbon sheets for these tests so I was able to tear them fairly easily. The JB Clear Weld works very well. Only the 3M 2216 works better but the 3M stuff is more expensive and takes a lot longer to cure. In practice I use both. If I want something as strong as it can be, I use the 3M, if I need something fairly strong and I don't want to wait a couple of days for full cure, I use the JB Clear Weld. Also, in later tests, I found the regular JB Weld does not work as well with carbon fiber.

[@viociarnau1670]

Hey, what about Gorilla Glue (from Home Depot let's say...)? Isn't that stuff strong and good enough? What do you think about that experiment...?

[@robbo580]

Vio Ciarnau word I hope he does that video next

[@rob215x]

I've tried Gorilla glue. The stuff I got (at Home Depot) expands and is difficult to work with when using the materials in my video.

[@CarbonbikewheelsAu]

PS Robert I ended up going with Techniglue R15 with H15 hardener which was just as good as EC2216 but 1/10 of the price, albeit smallest container is 500ml of each eg 1 liter.

[@TheMattiasninja]

What would be best for a carbon fiber on carbon fiber application, looking to use for a bicycle. I need to it to be strong and handle a lot of pulling and pushing.

[@rob215x]

Either 3M EC-2216 (seen in this video) or 3M DP-420 (not seen in this video). These are aerospace grade epoxy adhesives. Surfaces need to be prepared and cleaned properly. If you are gluing one tube inside another tube or a fitting, this will be the best possible bond and its fairly lightweight. You don't need a lot but it needs to be mixed exactly as the data sheet shows. Definitely read the data sheets on these adhesives. These are not consumer grade adhesives you find at the hardware store. If you buy it on Amazon, it might be priced too high. Look for it on Jensentools.com

[@TheMattiasninja]

@@rob215x thank you, I am gluing a tube into a fitting. I'm gluing my aero extensions on to my base bar on my tri bike, what do I need to apply this stuff, gloves and a tongue depresser?

[@MrDoctorm3]

@@rob215x what would you recommend for bonding a carbon fibre roof on the chassis of the car the DP-420 or the EC-2216 ???

[@rob215x]

@@MrDoctorm3 I think either would be fine. Check the material data sheets on both the DP-420 and EC-2216 to see if one has better heat resistance or other features that may apply to your specific application.

[@veoteveo1]

could you try 316L stainless steel 100 grit finish to carbon fiber.. and torlon to stainless steel

[@Vik-kw4sy]

Can you suggest a adhesive for joining two composite sandwich structure with foam core

[@HuguesD]

well done Robert !

[@rob215x]

Hugues D Thanks!! =)

[@lalozed2334]

Which one do you recommend to glue carbon fiber on to fiberglass? I have a carbon fiber hood and the bottom its fiber glass . it split i want to glue it together

[@rob215x]

For your application, I would be more inclined to use fiberglass resin. The epoxies I'm testing in this video are more for small uav/model aircraft/drones and are all fairly expensive per gram/ounce. I would search KZbin for videos on automotive carbon fiber and fiberglass repairs.

[@viociarnau1670]

I forgot to mention I'm trying to put two carbon fiber rods into my Custom guitar neck...--well, I'm trying to use the best glue because once I glued the Fretboard on top I cannot undo the job...

[@linzitazim]

Hi. Couldiuse jb weld to stick carbon fibre to carbon fibre?

[@rob215x]

I would use the JB Weld product called Clearweld. I've used both of the JB Weld products and I've found the Clearweld to work better with carbon fiber because it maintains some flexibility, which is important for drones and model aircraft. You can see me using it in this video: kzbin.info/www/bejne/qKbWiWl5pahsi6s

[@jamesandonian7829]

Can I epoxy two 2mm hardened panels together to make a single 4mm thick panel?

[@rob215x]

Yes, but what would be even stronger is if you put a layer of balsa between the two panels and glue all 3 together. This is called a sandwich panel.

[@Morpheus0000]

thanks for that. if you could incorporate the description information in the video as a commentary is be even better.

[@SidharthMishra99]

How to remove glue from Joint location of wood & separate wood ?

[@rob215x]

What epoxy/glue are you using? If you're using 3M EC2216 epoxy, it is specially designed to be heat sensitive. This means you can use a heat gun and take things apart. Obviously you have to be careful when applying heat to materials like wood, but I have successfully disassembled wood parts that I bonded with EC2216. Also, it should be obvious NOT to use EC2216 in applications where the object is exposed to high heat. The data sheets supplied with the epoxy contain all of this information.

[@SidharthMishra99]

@@rob215x Sir,Glue I was using Fevicol SH.

[@rob215x]

@@SidharthMishra99 I'm not familiar with that adhesive but you might look up the manufacturer data sheet and see if there is a way to dissolve it

[@SidharthMishra99]

@@rob215x Ok

[@Ra-zor]

and the one you missed was Araldite ultra. cheap (ish), dry in 8 hours and super strong...

[@rob215x]

I'll have to check that one

[@iEnergySupply]

what a bad ass video!

[@usefulltipsfromacrazycargu4069]

Thanks for the video. Good Stuff!

[@7482david]

Thank you. Very useful.

[@Tontylous]

what's the music called?

[@deanenterline1760]

Yeah, what's the music called ... we would love to know?!

[@yurimpala]

Great Experiment!!!!

[@kira07]

you just tested which glue hold onto the wood, ...instead of cf

[@rob215x]

The wood frames are covered with thin sheets of carbon fiber, like you would do for model aircraft or drone frames. You can definitely see how easy the few couple of adhesives pull away from the carbon fiber, yet stick to the wood.

[@sethveith4482]

The 3m sample had no lip for leverage around the outside. All the other samples did.

[@rob215x]

LOL I wish 3M sponsored me or at least gave me some free epoxy. But no, I paid retail prices for everything and the 3M epoxy is the most expensive.

[@rob215x]

Seth Veith, the 3M sample had the same lip as all the others but if you actually watch the video, I TORE OFF the lip before the 3M epoxy failed!

[@donkeyrhomper]

Thank you!

[@jklmnorstuv6510]

dee muzik make me dance lik diz - FIST PUMP FIST PUMP doosh doosh doosh noise noise noise

[@robbo580]

Jklmno Rstuv lol

[@andyjohnson7408]

I use dollar tree baking soda and superglue, it's like glue welding...

[@jonienglish3231]

Looks like 3m epoxy the best !!!!!!

[@rob215x]

Almost 3 years later and I have yet to find anything else as good

[@jonienglish3231]

Try SIKAFLEX ADHESIVE SEALANT !!! BLACK OR WHITE really Strong

[@ArcolaBridge]

Minnesota company ftw

[@hangebicom]

Thanks, but can you add summary as a text? which one worked best? not everyone has time to watch full video and listen to shitty techno music :D

[@rob215x]

I'm guessing you didn't bother to look at the video description because its all there. But here you go... 1. BSI 30min Slow Cure Epoxy = SUCKS 2. Loctite CA "Professional" = SUCKS 3. JB Weld ClearWeld = NOT BAD, cheap, and easily available 4. 3M EC2216 = AWESOME, Aerospace grade epoxy, expensive, harder to find