Easy Plastic Reconstruction and Repair


Using Super Glue and Baking Soda you can easily rebuild broken plastic!

Skillshare 2 month free trial:

Here are the two other videos I showed "
Flip Clock Tile Repair:
2007 Video Demonstration:

This process worked so well I want to go around finding all my broken devices and give this a try on them. I would love to see what other people come up with for this.

Playlists of more stuff like this:
Repairs:

Other Links
Youtube:
Github:
Thingiverse:
Patreon:
Discord:
Repair
722 комментариев
Captain Diomedes
Your Akbkuku has evolved into:
A manual baking soda and super glue 3D printer!
The Niwo
Baking soda in a zipper bag. looking suspicious 🤔
Herbie Husker
If you use a razor blade to clean up the baking soda, it wouldn't look out of place in the 80s.
thejackofclubs
you should have called it "analog 3d printing"
Global warming is hot
If I had a penny for every time standard loctite super glue has saved me I could at least afford another bottle
Otter's Vintage All-Sorts
Damn, that panasonic clock is glorious. I found a clock by a company I never heard of from germany, it was so nice, white with a green vfd.
The Niwo
Is this the first time I see a sponsored video on this channel?
If yes. Congratulations. I hope your channel keeps growing!!!
Aaron Brown
Mini wargamers doin' this for years. Stolen shamelessly from hobby railroaders. ;)
Dominik Schütz
I fix most cracks with acetone (hope there is no misunderstanding XD) :)
gabest4
You can do the same with two component epoxy to get a proper plastic. I also just file it to shape after is solidifies.
FrankTheCat
so for cracked plastic cases like on the calculator, I usually vee out the backside of the crack and fill it with superglue and baking soda. it's similar to techniques getting good weld penetration in steel or aluminum.

I will note that the resulting repair is much harder than the original surrounding plastic and will immediately break if shock-loaded by dropping it or something similar.
Ian
Baking soda and super glue can also be used to fill a badly filed guitar nut.
Gabriel Fuentes
The most expensive baking soda comes on a zip bag. "Baking soda" ( ͡° ͜ʖ ͡°)
EFormance Engineering
Put the baking soda on first, then wet it with super glue, prevents the "it burst when I touched it" problem.
-
Nope, do not challenge me. I have nearly a metric tonne of things with broken bits that I've set aside to eventually fix. If I start now, I'll never finish, no matter how satisfying it would be. :-\ Great job though. 👍
Adam
Awesome repair! I'm sure there'll be some grump in the comments complaining about the ad or the repair itself. Ignore them, your videos are great.
MarshCreature
This is amazing. I had seen it before but never payed much attention to it thinking it was just another stupid life hack that didn't work. Now that i see it working this opens up so many possibilities for my repair projects.
Kaby
I'm really impressed by how you managed to fix the PCjr plate thing. Well done. :)
Bob Woggle
Oh shit, that ear syringe applicator is gold. I was trying to fix an n64 joystick with this method but the best way I could figure was to just sorta shovel powder in with the back end of some tweezers. Thanks for the tip dude.
Justin Urhead
Imagine AkBkukU getting pulled over by a cop with that baking powder in a bag lmao. You'd be the only person that cop would ever pull over to use the "it's just baking powder bro" excuse and actually be honest about it. 😹
infi
I have special super glue filler for model building, probably the same thing just more expensive x3
Siana Gearz
Yes, there is a reaction between glue and soda. CA glue is self-polymerising and contains sulfonic acid as inhibitor. To kick off the reaction, atmospheric moisture acts as spontaneous source of OH ions due to dissociation, which neutralise the acid in some spot and allow the reaction to proceed, it'll cure from there on out. Soda acts similarly as an ion source and acid inhibitor.

I do a lot of plastic repairs. Thin reinforcement on the inside with a superglue and blotter paper composite, or same with epoxy. You can also get "plastic glue" which is bog standard CA glue and a felt tip pen to use beforehand which does something to the surface of ABS and other Styrene based plastics, not sure what!

For epoxy i use UHU 1:1 epoxies personally, both 30-minute type and super durable 24-hour type, and usually i heat the parts with a hair dryer while the epoxy is setting or throw it on the hot bed of the 3d printer - curing it hot (up to about 80°C) makes it much more durable for some reason and speeds up curing, also helps kick off a reluctant mixture. The magical thing about good epoxy is that you don't necessarily get a super hard brittle material, you can vary the proportion of binder and hardener to achieve a range of mechanical properties. Adding about 20% more hardener than binder (which is actually hardener-epoxy-plastifier mix balanced such that it won't cure on its own) will match ABS plastic flexibility remarkably well, which can prevent breakage in the future. But adding more hardener makes it more difficult to cure, which is where heat comes in. You can also tint it in a million ways for seamless repairs.

Another useful tool is two-part kneading silicone. Usually either a broken off part or a symmetrical similar part is present, which can be thus copied over by making a mould in minutes.
pixelflow
I saw this a lot researching ABS crack and tab repair for motorcycles fairings too! For your example, on your calculator crack, they would dremel a void to then fill with powder, and then saturate with glue.
pacmandrugs
You can apply superglue to the outside crack as well, and then scrape/sand it down. It ends up clear, and if the crack is closed well, it's pretty much invisible. Even when the cracks are big, it still makes it look less noticeable. I just did it to a very cracked NES case, and it definitely helped.
Adam
I've seen the baking soda/CA glue trick used by die-cast customization/restoration and modeling guys as well
Bronson M.
This was incredibly helpful thanks!
blaknift
I wonder if this would be a decent solution for replacing the screw studs on old commodore stuff.
Northeast Racing
You'd think someone who used to build plastic models like myself would have known that. Worked great fixing the fold out feet on my keyboard.
Plan C
Nice. You can melt some plastics back together with acetone. Works on C64 case pillars ;)
athf226
I appreciate the timer bar on your sponsored section. Also I learned this technique from a video with Adam Savage, really neat, and I often suggest it to people.
Skull Gun
going to chime in here and say that "zap-a-gap" have the best bottles for superglue ive used.
Diogo C.
I've heard of people using cotton fibers with the superglue for reinforcement but I haven't experimented with it enough to give it any kind of assessment.
EFormance Engineering
Psht, we know you use Darktable...
Andrew Ballard
I've never seen a progress bar on a sponsored section :D
ENEKO TORRES
Tbh i see myself putting super glue and baking soda all over the house in a few days lmaooo
bean stalker
Dude, you actually discovered a prehistoric form of 3D printing...
The Annoyed Mr Floyd
What is it with super glue and baking soda???? Who discovered this?? Why wasn't it discovered sooner??
boneske
3:37 The bottom half has less material and more torque applied when pressing down the cover. The upper half doesn't have as much torque and more material when closing the cover.
Ryan Martinez
BTW, the bulb is from an ear wax cleaning kit.
Minor League Gaming
The super glue and baking soda is a chemical reaction. It is slightly exothermic, and technically your creating an acrylic.
osgeld
the calculator (and the clock) is a good use case for solvent welding, poor mans version uses acetone
VeloxH
Thank you for the progress bar on the sponsor spot. And also, congratulations!
TimmSkiller
Oddly satisfying? I seriously get satisfied while watching this, especially at the parts when he files down the mixture.
Benjamin Crall
I think you should have glued the parts normally when possible before reinforcing with this technique. It seems like that would make a stronger joint.
Csaba Sánta
Is it possible to make a mold using say BluTac and superglue the finished replacement part to the original?
Tom Lindo
Perfect timing. I have some vintage plastics needing repair on my next project
Gustav Gurke
I should try this on my Powermac 7500 Power Button...
VintageTech1
Challenge excepted.
I have a mechanical calculator with plastic body, cracked, split and chipped here and there.
stonent
Funny that he did a video on this after I mentioned the locking tabs under the drive cage for the PCJr can get brittle.
Siana Gearz
The gear you're trying to replace is likely made from PA, which is why it shrunk and split - it loses moisture with time and contracts and becomes brittle. Low surface energy plastic - IT CANNOT BE PERMANENTLY GLUED TOGETHER. Except with a solvent that you probably won't get, or heat-welded, which you can't really do on this part because of intricate shape. Another popular gear material is POM and has the same issue of not being gluable.

But if i guessed right about the types of plastic, then when it breaks again, you can just wait for that, no need to break it on purpose, then you wash off CA by dunking it in acetone for a time, and then use the pieces to create a silicone mould (2k kneading silicone - not very cheap, but super easy to use) and cast a copy from epoxy. That will be a perfect repair, it'll work just as well as the original gear and won't shrink with time.
Steve Mansfield-Devine
Did you notice any heat being produced? I've read that there's an exothermic reaction as the baking soda polymerizes the CA.
pineapplebob06
Wow never seen this before, absolutely amazing results.
Freddy
First ramen noodles with glue
Then plastic with heat
Now baking soda with glue?
Whats next?
atariforever2002
Also have a tip. If you get too much CA in an area, use a corner of a paper towel too "wick" up any excess before you apply the powder. Saves on extra filing later.
Tom van Mil
@AkBKukU have you tried water on the solution? I'm wondering if it stays solid after applying water!
josuet196
Funny, I have a Lloyd's Tape Deck that I would describe the same way.
TheUnderratedGamer
Bro! I'm so happy you've got some sponsors coming in!
acfrazier
Ya boy got a sponsorship. You go man! Been watching for a while now and am super happy to see your channel grow.
Sahasrahla
You should also look into glue for model building. It slightly melts the plastic and fuses parts together. It's great for really small parts that broke off.
TGOTR
I have a Sony MDP-333 that needs fixing, maybe I'll try this on that.
Pedro Marques
Please do not break more stuff just to fix them :P
Wilhelm Driscoll
I'm going to have to try and fix my Commodore 1084 monitor with this stuff
P C
MAN! This is FANTASTIC! So many broken plastic bits. Thx! 😃
chloe devereaux
thermodynamics..... the blue puffer thing is an eraser debris blower .. :D
WedgeStratos
Holy crap. I wonder if I could fix the trigger on an Oculus Rift controller doing this. Great tutorial.
tarstarkusz
The bulb is for baby snots and for de-waxing your ears. This one is baby blue, so it is probably not the one that comes with the ear de-waxing kits and is more for baby snots. The ones that come with the de-waxing kits are dark green.
cheater00
you could use bluetac or plasticine or wax as a mould to build up the parts. especially for the last part (pcjr snap-in)
Călin Guga
2:40 yep that's how guitar techs fill in nut slots. it amazes me how there's still so much we can learn from eachother, ingenious tools, uses for them, tips and tricks, just like i imagine the first humans did
Laurens A.
This method reminds me of the polyester mesh and epoxy I used for fixing body parts of my motorcycle. It essentially comes down to the same principle: rigidity and bonding.
Mustafa Usta
Cotton and super glue is another magic but it heats up be carriful with it and after reaction it is super solid like baking soda
s8wc3
Have you tried Methyl-Ethyl-Ketone before? I heard it works pretty well for fixing cracked plastic / adhering shattered plastic pieces together.
Na4a4a
This is done with guitar nuts and stuff.
Placing the baking soda first and dropping the super glue on after will actually make a more solid part. The glue will permeate through the baking soda.
Doing the glue first means only the surface really has any powder.

Some of these examples (like the calculator and clock) really look like they'd be better off with a two part epoxy. But if it works, it works.
Robert Kersbergen
Another great, informative video. Keep them coming as I love them.
Agamemnon2
That hinge repair was remarkably successful, I didn't think it was going to withstand the mechanical stress of being snapped into place. Still, hard to argue with results like yours.
teh_supar_hackr 0010101
Damn, that's impressive on how durable that is.
fradd
Have you considered epoxy instead of that mixture?
Bruce Scott
I build model cars/trucks and I have used super glue and baking powder to fill the seams and cracks and then sand and paint. Works way better that body filler. I never have used baking soda. Well have to give that a try!
Thanks for such a cool video...
aardvaark
That blue syringe thing @ 12:52 is an ear canal irrigation syringe. It's for clearing out earwax without, you know, poking sticks in there and causing damage like people in the US all seem to think is okay.
Vox Andrews
I wonder if something like this would work on the plastic bowl inside of a Nintendo 64 controller stick
atariforever2002
Would you be able to post a pic somewhere of the battery cover? I have this same calculator but the little locking tab on the cover is broken off. I'd like too try this to recreate it.
Roland's Recycling
Thank you for this. I’ve heard of it for other things but never put two and two together until now. Heading to the store tomorrow for some fresh superglue.
1sonyzz
known this method long time ago so this video taught me nothing :)
cb meeks
Amiga 500 trap door owners rejoice!
Diego Gomez
This really is magic. You are creating material from nothing, from dust like a superhero would do.
JORGETECH Jorge
That's a lot of Accursed Farms suggested (and watched) videos there. Glad to see another viewer of that channel.
Marcelo Gouveia
For bigger and critical parts you can add the technique of solder iron a fine wire and then super glue + baking soda on top of it. Nice video!!! =D
Eo Tunun
Generic plastic glue as plastic modellers use would have been the perfect choice for the calculator case, though.
The baking soda-acrylic compound is nicely tough against getting ground down. This is exactly why luthiers use it to patch the notches in guitar nuts when they were cut too deeply.
Brett Prefontaine
model makers use this trick a lot to either fix something broken or sculpt something from nothing. Adam Savage has a few videos on it on his tested channel.
JORGETECH Jorge
Did you talk about this method with Druaga1? I'm sure he could repair the broken hinges in a LOT of his classic Apple computers.
PawlOwl
Whoa! My boy got himself a sponsor. Celibrate the occasion by wearing your shiny hat
Makarov Fox
i use poxilina is like clay in two part you knead 2 equal parts and in 10 minutes hardens is like mounting putty but harden in 10 minutes or so
code beat
Great video! Damn, I just sold (few days ago) a nice vintage reporter recorder with two broken gears actually this was worth trying before selling it (sold it broken because of the gears). It is possible to buy the gears but man it is a new market, guys that 3D print gears and sell for ridiculous prices, for example $25 for only one gear. Insane. Despite the effort and investments of these gear creators, you must really love the older device to invest such amount of money.


About the video, I didn't see you cleaning the parts (with alcohol or something) before drop any glue onto it. That could introduce some weakness. Despite of that, maybe it is a nice idea to see how strong it really is over time, this needs a follow up video. Two weeks or a month or maybe a year or a half. That could be very interesting.



Thanks for sharing, great video. I am going to try it at the next repair café.
Michael Graham
I have a control flap on an old Gateway monitor that's broken in a very similar way to your Commodore monitor. I may have to try this.
dbozan99
Oh man, a Songs From the Wood t-shirt! I bought one on the very first day that they were available and it's one of my favorite shirts.
IT Advantage
I thought I was watching Scarface for a minute there.
Zackary Stone
Very good handling of a sponsor! Good stuff, some channels do better than others on how to handle them, you did great!
Geoff Seeley
I was just looking at this method to fix a KVM plastic front panel that must have been bashed in shipping. Straight super glue didn't quite work 100% (maybe 50%) so next time it gets the white powder as well!
Lasse Bodilsen
I have made similar repairs with 5 minute epoxy, which i found much easier to work with. as you can build up the structure while it cures. Also i think the epoxy is more flexible when cured, so it is not as brittle as the superglue+baking soda method.
Et Malleo Semper Vicit
As a copier repair tech having baking soda in a bag went over real well when I had to visit prisons to fix their machines.
Peter Tryndoch
Yes - always do bit by bit and never a large area at once.
I did see a wood working vid where someone tried to fill a large area in one go (soda 1st and glue 2nd),
The super glue did not flow into the middle, so the outside was hard but the inside stayed powdery.