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

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

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

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.

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!

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. 👌

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.

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

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!

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

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.

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.

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

"I am an engineer" Lmao😂

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

Loving your channel!!!😊

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

Great video - cool idea and fun too watch!

Not sure how i havent come across your channel before, but this was great! looking forward to more

Excellent! I love this kind of stuff.

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

I have needed this

Great video, crazy but never the less entertaining

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

Love the intro u rock!

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

This video was delightful

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

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!

Destructive test analysis is the way to go!

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

“You were stranded, I’m not” 😂 6:13

I love your shirt & dryness

good stuff! i feel like you could make a larger one with multiple steps to the scissor mechanism and be able to lift the car using the jack alone instead of having to lift part of it with the wood. curious to see if you will continue this project

Lmao y'all are nerds and some pretty fun ones. Please keep on keeping on!

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

Every good engineer ALWAYS wears their Safety Crocs... I know I do as well... :D Subbed!

I didn't know it was possible to pack so many anxiety inducing moments into such a short video.

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

Exactly the kind of "F**k around and find out" video I love seeing!

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

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

WHOA, I'm impressed!

Congrats on reaching 50k subscribers!!! 😅

There was a really nice safety instruction at the beginning. Recommended!! 😂

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

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.

I had the actual metal jack that came with my car fail spectacularly one day. Got it jacked up the angle of the car shifted as it was raised the jack twisted and the nut popped off the screw and dropped it to the ground instantly. I had never seen a screw jack fail like that. Never get under a car supported only by any jack.

❤ that shield 😂

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.

It occurs to me that you could optimize the tool path for the particular needs of the parts. You'd have to write slicer code. Is there an open source one you could start with?

Is there any way that I can get this model to print it myself ?

Once upon a time, an email answering guy was asked "Do you use your powers for good or for awesome?" I can clearly see that you use your powers for awesome 😎 Love your work. Rock rock on! 💪

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.

what did that ender 3, striped of its electronics, power supply, screen and possibly more, do to you for you to drop it on the ground like that?

Thx for being FUN...! Good Couple

Some suggestions for your consideration: Shape the head of the lead screw similar to that of a flange nut. Place a thrust needle roller bearing between the flanged face of the lead screw head and the non-threaded block. Make sure the type of lubricant used does not effect the integrity of the plastic.

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

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!

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

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

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

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

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

so what did you done when you bed level your honda?

Seeing you sip that paper under the tire made me think of setting your zero by hand on a mill.

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

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.

That jack stand is just like the Harbor Freight tools jack stands!

I like this kind of more useful content, i think going a bit more in-depth and combining different techniques to make the contraption stronger would be better. thanks :)

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.

Very cool!!!

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

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

print a metal version how strong is ur design ?

That intro straight out won you a subscription

What glue do you use for pla?

3:31 that scream lmao

This is so utterly preposterous,yet it looks fun

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?

why did you not lubricate the screw?

So how does it compare to harbor freight jack stands?

where i can buy the stl

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.

i love how Bambu took over ASAP

Bro is leveling the tires💀

Leveling the tire

Can I use Google sketch up for my Ender3 ?

Did you lubricate the threads and gears? I hear creaking that sounds like dry threads

*does it at home*: "don't do this at home" That's my kind of humor 😂

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

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.

Can we just appreciate Dan for refusing to let her pony tail us, even in the middle of a hot summer day. Rock on!

I watch for the shenanigans

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.

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

Did you do a proper involute curve on the gear teeth? They looked approximately right, but I couldn't tell, my calibrated eyeballs are letting me down.