Lifting a CAR with PLASTIC 

3D printing metal is not cheating Emily! Is the way of the future... Is the way of the future... Is the way of the future

Something completely helpful, yet useless because it's dangerous as hell. I approve of this video 100%. Well done Emily.

Watching you put that printer on the concrete so aggressively physically hurt my soul 😭 but seriously, all of your videos are so funny and entertaining and you are an inspiration to me as a teenage girl who loves engineering

DUDE. Let's you and I collab on printing that in some CF PEEK. YES.

Given the terrible mechanical efficiency of the jack when it at the start of its lift, I was cringing all the way, and very impressed at the lack of shrapnal. Now I am wondering how a 3D printed conventional screw jack (vertical thread) would cope. Brilliant video!

I am sure I am not the only person wondering if a 3d printed jackstand is as safe as a harbor freight jack stand.....

This is one of the things I love about 3D printing: Using $200 of filament and 20+ hours of printing to make something that I can buy for $50 and a 10 minute trip to the store.

The specs for PLA vs PC show some values better for PLA and some worse, and the ones which are worse aren't all that much worse. PLA is an all-around great material, with its weak points being that it melts at a relatively low temperature and when it fails it really fails. If you want/need something tough the materials to use are nylon if you want it hard or TPU if you want it soft. A good trick for making strong 3d printed parts is to embed metal bars (which you can get cheap) inside a print in strategic places.

Impressive stuff! I was expecting at least one attempt to shatter into confetti.

Emilys green screen is impeccible. 👌

Ahh yes, I keep a 3D printer in the back of my car for just such an emergency. It only takes a few dozen hours to print a jack so I can change my tire.

The best parts of the video, asside from the super cool design and eng; it is the genuine excitement with success. keep going!!

Destructive test analysis is the way to go!

As a fellow material scientist thank you for the cold hard numbers! 😄

I just discovered this channel, and it’s the funniest shit, I’ve been binging all the videos

Very cool project to gain a meaningful understanding of PLA strength. Now, how about that grow tent back there? 😁

Go for more walls, less infill. Like 6 or 7 walls, 50% infill.

Ive heard you on the Lateral podcast a couple times, but this is my first time actually watching one fo your videos. I've gotta say I'm hooked XD that was amazing

This video really lifted my spirits. That car totally got jacked!

Cool project! You can optimize the orientation of the screw when printing by printing it on it's side on the build plate rather than standing up (you can add flatness to either side of the screw). By standing it up like that, the load on the jack is going to try to pull the layers apart, which contributed to the first failure. The adhesion between the layers will never be as strong as a continuous piece of filament, unless maybe you anneal the parts.

"I am an engineer" Lmao😂

3D Printed Scissor Jack vs Real? Which one better? Maybe, I should make the comparison, who is up? 😅 Nice video Emily!

I'm glad YT recommended you, and I like that you show your failures.

“This was done in a safe environment… We wore safety goggles.” Proceeds to show face without safety goggle lmao. Keep up the good content!

Fantastic work! A longer cranking handle will make it easier to lift the car higher, especially as more weight is added. For a higher lift without wooden blocks, longer lengths on the middle blocks will do the trick, love the fact you added gears on both ends, fantastic fix!

4:37 You didn't hear unsettling sounds, you were hearing settling sounds.

5:19 Never seen someone calibrate the z-offset of a car.

That's a lot of plastic. What do you with the stuff you don't want anymore? Is it easy to recycle?

Excuse me but can we use the seaweed in a 3d printer so that plastic isn’t killing us? I had a thought of it just now since i saw the seaweed startup that makes them like plastic pellets to be put into the machines in factories that make plastic or in this case make a plastic like seaweed.

ok, I dont know how I have not seen you channel before. But I was not expecting the comment about your husband being a material science engineer 😂

Harbor Freight: Makes most dangerous likely to collapse jack-stands in the world!. Emily: Here hold my pla!

Did you add lube to the screw and other parts that rub? I'm a big fan of Super Lube.

i love how Bambu took over ASAP

Love the intro u rock!

“I’m prepared for this to explode in my face” - Emily 2023

I’m not sure if you do this later in the video because I haven’t finished it yet, but you should definitely add a ratchet mechanism to that handle

yall didn't use plastic-safe lubricants? lol

Great video, missed opportunity to make a 3d printed ratchet though. 🙂

That printer drop at the start physically hurt me

“We didn’t go under the machines.” Proceeds to immediately show clip sticking arm under machine. Classic

I really loved the way you show your content Emily. Keep it up, cause you're doing great! Also great topics on the channel! 😁

Can you please make onshape tutorials for 3D printing????

I think the most impressive part is that you were able to put so much torque on that wrench without stripping out the wrench or rounding off the nut.

Wait, the first models were made out of PLA? PLA! That's impressive for PLA. I don't use PLA for anything that needs to be functional, I always go to PETG or ASA.

I am pretty sure she is not gonna put her life under this Jack. What is point to print it in the beginning 😂

Brilliant. Nope, shouldn't work. Nope, mostly doesn't. Nope, scary AF when it does. Fascinating to see someone try though. Did make me wonder if the printer itself would work as a jack...ensure the load is over the Z-axis screw supported bit of the crossbar, desperately try to keep everything vertical....nah, probably a daft idea... ;)

Try adding a ratchet on the scissor jack so you don't have to remove the handle every time! I bet it will speed it up a lot! And use a ratchet mechanism from a torque wrench so you can lift up and down, if you actually do it, that would make my whole week better!

I have a car which weighs half as much as yours. This will allow me to save even more weight by throwing out the "big&heavy" factory jack replacing it with a plastic one. :D Honestly knowing how much time it takes to print these parts is crazy and you just go with the flow with the video which is cool.

2:01 she is under the lawn mower with the camera....... VIOLATION OF SAFETY!!!!

Congrats on reaching 50k subscribers!!! 😅

0:25 and now you gotta relevel the bed

we were watching the video because you put it out there. :D

3D Printed jackstands...safer than Harbor Frieght jackstands

so, this is how harbor freight manufacture their tools. Now it all makes sense.

What filament is best for a car jack to use on a REALLY hot day.

Here I am hoping my custom printed 1 kg spool holder is going to support the weight on top of it, and then you casually jack up a car...xD I'm amazed that this works

That was pretty impressive honestly haha! I printed an oil filter cap wrench last summer when I was in a pinch because the metal one I had didn't fit the car I was working on and surprisingly it held up quite well. I wouldn't ever try to jack a vehicle up though lmao!

It is great the ideas you come up with. Great vlog thanks for sharing.

love me some onshape, you can have teams as well. Waiting for CAM studio.

03:44 did anyone else just join in doing Owen Wilson Weooooeewwww, wwooohhhhww, weeooooohw whhoeeooooeoeeewwww?

Honestly, this is a genius design, not for cars but for doing things like leveling tables etc. Not a bad idea at all, could totally be viable lol.

Its just as safe as a regular scissor jack!

A nonsymetrical Thread woul have helped to reduce the stress on it. But other than that its a cool project.

GM used to sell some of their vehicles with jacks made largely out of plastic. If they could get away with it it can't be too bad.

Unlike the lawnmower's tire, the car's tire actually can swing up and down, so that explains the need for the extra wood.

I don't understand. You're an engineer who didn't do a rough calculation or simulation before making something to lift heavy weight???

Great video, crazy but never the less entertaining

print a metal version how strong is ur design ?

You are not gonna jack your car up with plastic

Ur husband is lucky, ur awesome

lubing the threads would make your life easier

this is giving william osman energy lmao

I think your ability to make traditionally metal automotive parts out of plastic would give you a bright career in BMW.

Would it be stronger if you 3D printed molds to make the parts, then poured standard hardware store resin into the mold? What is the strength difference between 3D printed resin parts and cast resin parts?

Yeah, a lot of your strenth issues could have been -solved- improved with changing the orientation of the print. But it is still really cool to see how strong some redily available printing materials can be. Then again, what do I know. It took me three tries to spell check "the" in the first sentance.

With all the creaking, I was guessing there wasn't grease, but then you said "grease is gross", so I guess that's just the noisy nature of plastic under pressure. I'm glad you did this so I don't have to!

just as an idea: the straight lines etc are mostly from older manufacturing processes that had an easy time with straight objects. you could process your car jack with a strength optimization algorithm. it would look more organic light (think about bird bones which have to be rigid and extremely light or trees, which have to be optimally balanced, as they cannot afford to be too heavy). these forms are hard to manufacture with traditional methods, but as you know, 3D printing does not have some of the limitation that other methods have. and think about the infill type, depending on the type, they are sometimes just load bearing into one direction. gyroid should be the way to go.

If you were on an island and relying on printing rather than a conventional shop in order to produced needed tools, you would design them based on the material properties. The plastic jack would not *look like* the conventional metal jack. It would have different proportions and appear oversized in general. E.g. the screw might be much much larger and have a fine pitch, and there might be other design features to take the load off the screw threads, like a ratchet.

A little bit of lube at the screw would help a lot

Make a longer handle for more leverage LOL

0:23 - Seeing a 3D printer dropped onto concrete really curdled my milk. I like machines. Why you be hatin'? ABS-like resin on an MSLA 3D printer would have totally killed this.

i dont understand why you trying to calibrate the z offset of a tire with the paper.... why not adding a touch sensor to the car

Does she have a printer farm that have nozzles the size of garden hose or these videos take weeks to get done?

2:04 Those "gear teeth" hurt me whenever i look at em.

I don't know if this would be the most boring video idea, but 3D printed furniture?

Emily "should I have a shield in front of me?" me "you only though of that now"

somehow the jack stand is stronger than a harbor freight one

Wonderful! I was so sure this was gonna be sponsored by EcoFlow, or some of the other oversized powerbanks... 😁

I love your shirt & dryness

It’s been a hot minute since I’ve seen a new vid. So happy more are coming in.❤

Is it hard to use a 3D printer? I want to 3D print half a armor suit to cosplay as a character. But never used a 3D printer and didn't know if it would be better then eva foam.

Bro is leveling the tires💀

Emily slid that piece of paper under the tire like she was levelling it. Gotta level all 4 corners.

why did you not lubricate the screw?

Just a little tip infill quite fast gives diminishing Returns. Try more walls/perimeters and top and bottom layer. Also add a 0.4 mm tube inside the model at Connection Point so there are solid walls printed on the inside of that part to connect them so they don't snap so easily. If you wanna make an unreasonable strong part 45 infill 6 walls and top and bottom layers with alternating wall direction with cubic infill. Most importantly get good layer adhesion. Also increase line thickness/with to 0.6 (don't need a 0.6 nozzle if you stay under 0.24 layer height). Also helps to burn though having to Mutch filament and to little microplastics everywhere.

So......If you want to change a tyre, you first have to loosen the wheelbolts lightly before you jack up the car. Didnt see that happening in this video, so if this was a real life scenario, you would have lowered the car and lift it up.....again....😂🤣

So...if you car has a spare it has a jack. If you invest in a good 1/2drive impact to leave in the trunk with a socket for your lug nuts. You can you the same socket and impact to crank the jack up. Way faster then even a floor jack. All of you are welcome for a life hack.

..But why did you copy a shape that was optimized for cheap stamped-metal parts? Surely a better geometry can be constructed that utilize the compressive strength of PLA? (without losing a ton of mechanical advantage in friction in screw-threads)

This is such a bad idea...

Cordless drill + socket to speed this up?