I'm surprised a lot more people haven't seen this video, it's got a great production quality, great video!
@PattysLab3 жыл бұрын
Cheers!, I've seen that people were posting this on forums and also a hack a day article was written about it. What I would like to do is to proceed with some more materials and some more scientific tests. As a part 2 video or something along those lines :)
@the_omg32423 жыл бұрын
That's pretty interesting. I work for a company that makes coil springs and it would never occur to me to try and make them out of plastic. Do they tend to stretch or compress once they've been cycled a lot? One tip for your extension springs would be to print a theaded plug to go in the end with an attachment loop on it. Bending the coil up on the end always creates a stress point which ends up being the weak point. By threading a plug into the spring and pulling on that, you spread the stress over the coils it's threaded into.
@PattysLab3 жыл бұрын
Thank you for the reply! That's really smart actually 👍🏼
@TheJacklwilliamsАй бұрын
Isn’t it great when one of your viewers actually contributes a constructive comment vs useless empty negative feedback? I like this. This is what I come for. Fantastic technique, fantastic testing, great project. Thank you.
@klausbrinck2137Ай бұрын
and then superglue the threaded plug to the spring-"tab" (which isn´t a real tab anymore, more it´s the actual spring´s end, but I think everyone understands what I mean)
@BamTehBrent3 жыл бұрын
The tips throughout were very valuable
@farhs31334 жыл бұрын
Wow, awesome technique. I was actually looking for a way of making springs, this video came in a perfect time.
@PattysLab4 жыл бұрын
Thankyou! It's really hard to put out your idea 😅 since yt does not promote small channels I'm happy you found it :)
@bloopbloop56633 жыл бұрын
@@PattysLab you will be famous soon the algorithm just hit
@suwedo86776 ай бұрын
I had literally this idea 6 years ago and didn't pursue it. Thanks for making it a reality.
@richardlo13303 жыл бұрын
the visual part of this, with the filament relaxing just prior to reoval, is very much like annealing silver with a torch.
@UFO_researcher3 жыл бұрын
In order to increase the strength of the pull tabs on the pull spring, you should form the loops before annealing.
@klausbrinck21373 жыл бұрын
That would be too complicated. Still, he could localy warm-up the point he´s gonna bend, when he creates the "eyes".
@ilikewaffles36893 жыл бұрын
It's not annealing 😐 just normalizing
@TroyRubert3 жыл бұрын
Microscope view of the failure site and a cross section of the springs compared to new ones would be super interesting.
@RyanMcQueen19854 жыл бұрын
This is fantastic! I have been trying to think of a way to create good 3D printed springs, but this is even better. Definitely going to use this in some designs. Thanks for sharing this! Also, great instructions. Very clear and thorough.
@PattysLab4 жыл бұрын
Thankyou! Goodluck making them :)
@TheFifthLight Жыл бұрын
Good project, good science, interesting results! Good job sir!
@WaspEyeNight3 жыл бұрын
Was looking for a cheap way to get springs quickly for my 3d printing projects without needing to go to the store, this should work perfectly! Thanks for sharing and happy new year!
@PattysLab3 жыл бұрын
Cheers🥂! and happy new year!
@CIA_Alien4 ай бұрын
Neat that these can actually hold up that long! I guess the question is why though? It is so easy to make metal springs on your own that you don't have to worry about breaking from heating up or drying out due to the elements etc.
@odinata Жыл бұрын
You've got it backwards: its the absorption of humidity/moisture that makes it brittle.
@PattysLab Жыл бұрын
For PLA yes but not for all filaments
@TheNone7248 ай бұрын
Making 3d printed rc car with these would be quite awesome
@ebe-hero70523 жыл бұрын
Dang Good test! I learned a lot! Seriously thanks.
@PattysLab3 жыл бұрын
Thank you for your comment! Is there any interest in testing for example ABS, PC or any other materials? Of even for the fact keep the springs compressed and starched for longer periods of times to see if the wall spring back of stay deformed?
@ebe-hero70523 жыл бұрын
@@PattysLab ABS and PC love to see comparison
@armorhide4064 ай бұрын
I'm so glad I found this. I was trying to figure out what metal springs I'd have to buy but this solves that since I can design the parts and then the springs after
@Superimpresora3dАй бұрын
what! awesome bro. loved this video. super helpful. keep it up dude.
@ansiaaa8 ай бұрын
0:46 - dried filaments are more brittle than filaments that have been exposed to moisture?
@that1guy90Ай бұрын
Yeah, I think he misspoke.
@hhKJgf1M8a0rzt8hP3 жыл бұрын
This is some true spring science.
@electronsmove6 күн бұрын
Good idea. Nicely done. Thanks.
@alexfrenchmaker19034 жыл бұрын
Your channel deserve much more fallowers! I will share this on Twitter!
@PattysLab4 жыл бұрын
You are a legend Thankyou!!
@gottagoMS1234 жыл бұрын
I have my 3D printer set up in my bathroom. I print directly out of a dry box. This means the exposed segment of filament out of the dry box gets tons of moisture whenever I shower and stream fills the room. After a few days, with no exception from five different brands of PLA, all of them snap spontaneously into several pieces, leaving only a small segment connected to my extuder. Conclusion is that PLA gets real brittle when saturated with moisture.
@PattysLab4 жыл бұрын
I've never had such issues with PLA just left in the open but I'm really glad you point this out because it's important if people want to use PLA in their spring designs. I'm only now really curious how ABS would perform as a stiffer solution for Nylon.
@darkshadowsx59493 жыл бұрын
"pull spring" is actually called a tension spring.
@ilikewaffles36893 жыл бұрын
Yeah and the push spring is actually a compression spring. But maybe he's from a different country than US and doesn't know the exact terminology.
@tomboman3 жыл бұрын
@@ilikewaffles3689 Its a literal translation of how we call "trekveer" and "drukveer" (pull spring and push spring) aka tension and compression spring.
@ingGS4 ай бұрын
Yes, but many people into 3D printing are not from an engineering background, so using colloquial terms can ease them in. I don’t see any issue with calling them “push” and “pull” as almost anyone can pick on what they are for.
@eigentheoryАй бұрын
My d&$k is called a penis. What’s your point?
@antronk3 жыл бұрын
This is mind-blowing! Awesome application!
@knoopx3 жыл бұрын
I've tried this too, I designed some shocks for an RC crawler. A constant load with fluctuating ambient temperatures renders them useless, they will eventually (less than a week) loose shape.
@PattysLab3 жыл бұрын
Out of which material you should make them out of nylon or abs
@knoopx3 жыл бұрын
@@PattysLab I just tried PLA and PETG
@PattysLab3 жыл бұрын
@@knoopx but in the test you could see those where the ones who broke ;)
@knoopx3 жыл бұрын
@@PattysLab none of mine broke, I'm not talking about durability but reliability. To properly test what I'm saying you should measure the length and put them on a screw with some washers and a nut. tight them to their full travel, leave them for a week on warm ambient temp and measure them again. My experience shows that they shrink considerably and loose springiness.
@PattysLab3 жыл бұрын
Alright I get you this is interesting now I'm curious about nylon and abs an then just leaving them compressed for longer periods of time
@Fwacer4 жыл бұрын
Cool stuff! I've wanted to make some springs but so far have only done big print-in-place stretching springs
@PattysLab4 жыл бұрын
I was like if such spring works why doesn't this work
@ilikewaffles36893 жыл бұрын
@@PattysLab this is probably better for strength, but less flexibility for material diameter and harder to manufacture.
@tinkermakar7 ай бұрын
You saved my project, many thanks!
@FreetheTongue3 жыл бұрын
I've been making these for years, but I've been using a space heater or heat gun (hair dryer works too but they tend to burn out faster) to gently heat the plastic as I coil it. I just used the chuck of the drill to hold the start of the filament. My issue is it takes a while to make them this way. Your way might be faster in terms of actual man hours (vs machine). I noticed that when I coiled the PLA cold I found the color would end up whitening and preserving the color is important for my application. I know this isn't really an issue for your purposes, but I'm wondering if the color would be restored during the baking process.
@PattysLab3 жыл бұрын
I actually experimented with coiling the PLA in a pan with hot water in order to prevent it from having a lot of stress you might want to look into something like that :)
@Jim_One-wl4ke10 ай бұрын
Good job 👍. Will use for my mechanical designs. thanks for sharing a good idea❤
@noanyobiseniss74626 күн бұрын
I'm trying to design clips that will hold down but need to flex up to 1mm during install due to variance in the board production. These clips will be under tension, what material should I shoot for? I am guessing petg will suffice but am not sure, I think pla is too brittle. The clips will be 3.5mm thick and width is not a consideration as they can be as wide as I need.
@klausbrinck2137Ай бұрын
11:00 did u warm up the section to be bend, in order to form the tab??? or did it actually fail prematurely, cause it was cold when bent? earlier in the video, u don´t warm it up, but I thought/hoped, that the actual test-piece was made differently/correctly...
@PattysLab24 күн бұрын
It was a heated bend
@theGADGETSplaylist3 жыл бұрын
smart! I share the concerns of PLA getting brittle over time. I'm thinking this method might work pretty good with weed trimmer string (nylon, I think) which does not get brittle and comes in many diameters...
@PattysLab3 жыл бұрын
That's pretty smart! I'm btw also curious how PC holds up thinking about a follow-up video with many more materials
@evilc2048Ай бұрын
I wonder how this would work with flexibles? I use a lot of a material called PEBA, which is basically a Nylon derivitave. It's main feature is that it has very good energy return and fatigue resistance, plus retains it's properties down to -60c. Hell, I bet you could print a spring from PEBA... It wouldn't even need to be helical.
@1FishinAddict3 жыл бұрын
If you use weedwacker lines, it’s nylon, it’ll retain its shape for a while. You can make lanyard that way.
@MJ_on_YouTube2 жыл бұрын
What an outstanding and helpful video. Very much appreciated. You earned a like and a sub as I embark on my 3D printing journey. I've been a manufacturing designer for nearly 2 decades, but this is uncharted territory for me. You saved me a tremendous amount of time and gave me new things to think about. Thank you once again!
@PattysLab2 жыл бұрын
Ik Happy to add some knowledge to your already 2 decades of experience :). Cheers!
@MJ_on_YouTube2 жыл бұрын
@@PattysLab I am humbly acknowledging how much I don't know. I'm quite limited in the exposure I have gotten from the 2 employers I have been with. If you don't mind my asking, are you an engineer? You accomplished a lot while doing the project for you gf's father.
@tootalldan57023 жыл бұрын
Nice job. Instead of kapton tape, I was thinking an outer tube instead and pack it with salt. Just a thought. It would be a nice video on your spring tester as an overview..
@PattysLab3 жыл бұрын
Great suggestion!
@wolfsworkshop90953 жыл бұрын
do you think it's possible to do this without the kapton tape? maybe using painters tape instead since it shouldn't melt with high temps
@PattysLab3 жыл бұрын
I'm not yo keen to put painters tape in the oven aluminum tape should perhaps he a better replacement
@imothy3 жыл бұрын
have you used TPU as a spring? You can use it by itself sorta like elastic, I like using it on hinges, or in places you want to snap closed. I haven't had it break yet and I've tried pulling on it really hard!
@PattysLab3 жыл бұрын
I think that tpu is to soft to hold it's shape. Since, the filament has a narrow 1.75mm diameter :)
@johnfurr87793 жыл бұрын
@@PattysLab I think it would depend on the application that the spring is to be applied to. I am going to try very light duty TPU 20 mm long compression springs with a 9mm OD to use in a 3d printed air engraver hand piece I have recently designed. I want to have the entire build possible using 3D printed filaments. I will also try petg springs for this. These springs will need to survive a couple thousand compressions per minute
@Michael_Sky_193 ай бұрын
Great video! Thank you and good luck!
@edwinirizarry92773 жыл бұрын
Very nice trick for springs for 3D projects ty I love 3D printing!
@OtherWorldExplorers3 жыл бұрын
Dude this was awesome Liked Subbed!!
@PattysLab3 жыл бұрын
Awesome thank you much more content is yet to come :)
@stefanguiton4 жыл бұрын
Pure genius
@DaveWeagleАй бұрын
If you just print a little screw type connector for your extension springs - one that screws into the end of them and picks up 3-4 coils, your fatigue breakage issues at the eyelet should be over!
@GamingStuffChannelАй бұрын
What is the use case for plastic springs? It is much easier to wind a metal spring out of spring wire.
@smellslikeupdog808 ай бұрын
excellent video quality. Subscribed and binging in progress.
@teddysoft3 жыл бұрын
Old video, got as a recommended and when i heard patty, directly press the sub!
@PattysLab3 жыл бұрын
Cheers!
@michal_king4783 жыл бұрын
you could also use different thickness nylon strings made for those string lawn mowers (dunno the name in english) theyre made all the way from about 1.5 to 3mm and are readily available at garden shops and hardware stores in small quantities
@Sam35323 жыл бұрын
Weedwhacker -us English. Strimmer -uk English
@michal_king4783 жыл бұрын
@@Sam3532 thanks 😁
@josedavid6400Ай бұрын
have you tried with grass trimmer wire?
@ruanmuniz61616 ай бұрын
Amazing video... i will try to make make some of these springs, thanks. There goes a question, this springs can be used in airsoft guns projects ?? Thanks again
@sato4kaiba3 жыл бұрын
Nice work. Nylon will always be my choice hands down. 😁👍👍👍👍👍
@gouthamshailendra2 жыл бұрын
Hi, cool video. Any idea how it would work for torsion springs?
@PattysLab2 жыл бұрын
In exactly the same way if you can anneal the torsion spring in a metal jig in the oven jou should be able to make one
@akanobody56222 жыл бұрын
Great tecnic, how can I know for sure, some videos say that you have to dry the filament cuz moisture is bad for them (you can buy dryers), others say you have to apply moisture cuz drying them is bad. Thx again for the video very useful.
@PattysLab2 жыл бұрын
You are right filaments need to be dried before printing and pla becomes brittle when moist
@derekprobizanski68353 жыл бұрын
I don't even own a 3d printer but here I sit learning how to make springs out of filament
@gavynjasperingАй бұрын
Just curious if you own a printer yet
@zdog902103 жыл бұрын
Dope video and dope new channel to watch. NOICE
@ANormalCoconut11 ай бұрын
would it be easier to just design one in like onshape fusion etc?
@GeneralHowToTutorials Жыл бұрын
In my experience, PLA that has been left out gets very brittle. So why would exposure to moisture make it more likely not to break in spring form??
@PattysLab Жыл бұрын
Yeah I've pinned a comment stating that 👌
@Tibo0551 Жыл бұрын
I run into this here for accident.... Thanks to that :-D A wonder-video and explanations. I will look more :-D
@oljobo3 жыл бұрын
B r i l l i a n t video! So complete, full of good info! Thank You!
@PattysLab3 жыл бұрын
Cheers!!
@aarushirastogi19919 ай бұрын
Hi, can Polypropylene filament also be used?
@PattysLab9 ай бұрын
Would be a weak sprint I guess
@nedgligich3 жыл бұрын
The springs did not brake only the eye ends. Perhaps if you 3D printed something like a short "eye bolt" or "eye screw" then glued into the spring ends with a flexible glue like silicon. Then hook onto the eye, it will distribute the tension on the coil.
@PattysLab3 жыл бұрын
Yeah that probably works much better
@subsyairsoft2 жыл бұрын
Brilliant!
@joblessalex3 жыл бұрын
How did you get the thermal camera to go through the glass?
@PattysLab3 жыл бұрын
It's a flir one pro which has msx this means its using a normal camera overlayd on top of the thermal image. You can't shoot ir though regular glas :) but in the shop you saw I opened the oven door
@joblessalex3 жыл бұрын
@@PattysLab Ahhh. Makes sense. I didn't think the door was open. For anyone else wondering, thermal cameras can't see through glass!
@markcahalan56983 жыл бұрын
Possible to setup a shock absorption test? Where you have the compression springs on a pressure plate and hit them really hard to see just how much force they can cancel out
@PattysLab3 жыл бұрын
Yeah good idea!
@Crisisdarkness2 жыл бұрын
Wow, this has surprised me, very interesting what you have taught
@Induku7 ай бұрын
I am going to try this and add it to a speedometer that I am building!
@AmaroqStarwind3 жыл бұрын
Under which circumstances do I need pull springs versus push springs, and is there any way to use both in the same part?
@PattysLab3 жыл бұрын
Well many 3d printed gadgets do for example use printed in place springs to open boxes activate mechinsmisms etc. Usually many are printed in pla. From what I experienced like someone already mentioned in the comments PLA tend to looks it's ability to spring back over time if you keep it under load for longer periods if time. Hence why I showed this concept. Think for example about cosplay props or movie props for which you can use a nylon spring instead of print in place or steel spring. These speings will also not rust. Metals springs are always better of course but you would extend this method of plastic prints to make even crazier springs (I mean in their shape). Also I'll come up with another video where I use one of the push springs in a magnetic sensor configuration the plastic spring will nog influence the sensor reading. But to really answer your question I don't know when to use both push and pull springs in the same part it's up to you to design a mechanism that can house both you could think about a crossbow or something like that that the bow could use a pull spring and the trigger mechanism could use a push spring :)
@AmaroqStarwind3 жыл бұрын
@@PattysLab You should try to create a J-Damper, a Wave Spring and/or a Friction Spring.
@Raiden0zero0h23 жыл бұрын
pretty cool, many thanks for sharing
@Prof.Polymath3 жыл бұрын
Great work mate !! 👍🏼
@Wernerrrrr4 жыл бұрын
Love the video! Very innovative.
@ehonod3 жыл бұрын
Great work!!!
@PattysLab3 жыл бұрын
Cheers!
@HiDefTh3 жыл бұрын
Great idea! What a kind of tape you used to fix the filament at the metal rod? Beside a brand name for the tape, do you have any spec.?
@PattysLab3 жыл бұрын
I use genetic kapton tape (polyimide not polyamide) if you google for kapton tape you should be able to find it :) Here you have an Amazon link: www.amazon.com/Temperature-Kapton-Professional-Protecting-Circuit/dp/B07S2219CK/ref=mp_s_a_1_1_sspa?dchild=1&keywords=kapton&qid=1611408514&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzMTlQRjBBQzdOMTlDJmVuY3J5cHRlZElkPUExMDQyOTg1MTVOWEg1VlczSlNPNiZlbmNyeXB0ZWRBZElkPUEwMjg3MjI4MUpHM0FFR1ZJNFlFOCZ3aWRnZXROYW1lPXNwX3Bob25lX3NlYXJjaF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl
@HiDefTh3 жыл бұрын
@@PattysLab Thanks! I got it. :)
@PattysLab3 жыл бұрын
Okay great!
@2025istheyearilearnWHOLEmi-p1eКүн бұрын
usefull time spent !!
@2025istheyearilearnWHOLEmi-p1eКүн бұрын
also i subbed off course !
@horacegentleman32963 жыл бұрын
I suggest bending some steel wire into a sort of M shape to hold up your rod in the oven, if you don't have steel wire use wire hanger.
@heatherryan98202 жыл бұрын
This video alone earned you a life and a subscribe from me. I was really curious on it 3d printed could make springs or not, and now I know. One quick question, let's say, instead of having the springs be that long, I wanted a push spring that was about half as long, but had about double the amount of resistance when compressed. Could the be done by increasing the width of the filament used, or by increasing the diameter of the spring?
@PattysLab2 жыл бұрын
First of all thank you :), stronger and springs can be made by decreasing the spring diameter or increasing the diameter of the filament let's say 2.85mm. You can use a stiffer material or change the angle of the helix, ie ending up with fewer windings. However if the material is stretcht to much you can go into plastic deformation and your spring wil be much shorter than it was before. My approach would be to take a good spring material like nylon and use a thicker material like the 2.85 filament and perhaps try out carbon or glass fiber filled nylons
@heatherryan98202 жыл бұрын
@@PattysLab awesome, thank you for the advice. I will definitely try that out. I'm just now getting into 3D printing and I'm super excited about finally getting started with it.
@The_Releveler3 жыл бұрын
Awesome job.
@ostanin_vadym3 жыл бұрын
Thanks for the content
@kgaugeloselahle33883 жыл бұрын
Create cups and glue the pull spring ends in the cups for mountaing
@first-thoughtgiver-of-will24563 жыл бұрын
excellent thank you!
@Terrapin-gw6bb2 жыл бұрын
awesome
@BigFishEnergy2 ай бұрын
I used aluminum foil wrapped very tightly instead of the special tape and it worked just as well. Just a tip
@PattysLab2 ай бұрын
Yeah that's smart
@BigFishEnergy2 ай бұрын
@@PattysLab You are a wizard for sharing this technique. It turned out so much better than I thought it would.
@StrykeFPS Жыл бұрын
why did you choose not to use tpu?
@PattysLab Жыл бұрын
Tpu is to floppy
@sysghost4 жыл бұрын
PLA has the disadvantage that it deforms permanently under stress over time even in room temperature
@PattysLab4 жыл бұрын
But isn't that with all plastics? What timespan are we talking about. Might be a good to know for people to know :)
@sysghost4 жыл бұрын
@@PattysLab All the PLA mechanical parts I've printed have permanently deformed due to static stress over a few weeks. PETG seem to fair a bit longer. Parts I've printed with that has lasted under static stress for months before failing of other reasons.
@PattysLab4 жыл бұрын
Really interesting, since it might be better than to make the quick reload lock from PETG instead of PLA. Thanks for reaching back
@ilikewaffles36893 жыл бұрын
@@PattysLab yes, all polymers suffer from creep.
@eldiagrama3 жыл бұрын
What kind of tape is that? Really cool
@PattysLab3 жыл бұрын
It's called kapton tape ;)
@The.Talent3 жыл бұрын
This video earned my sub. Checked out your other videos. Looks like some cool stuff coming
@PattysLab3 жыл бұрын
Thank you! Yeah I have a lot planned for my channel
@AWROAL3 жыл бұрын
Nice..!
@RobertA-hq3vz3 жыл бұрын
Unfortunately PLA will tend to settle into a new shape if left over time in a stressed position. You're probably better off buying metal springs. Its not like tension and compression springs are not very common, or expensive.
@LeGoooze6 ай бұрын
This is ao cool
@georgeblair71293 жыл бұрын
Could make custom book binding coils too!
@PattysLab3 жыл бұрын
How do you mean :)
@georgeblair71293 жыл бұрын
@@PattysLab think like spiral bound notebooks. They sell plastic spirals of varying diameters for binding purposes.
@Nabikko Жыл бұрын
can you use a metal filament?
@PattysLab Жыл бұрын
That would be to brittle
@aryareel37603 жыл бұрын
Amazing tool
@PattysLab3 жыл бұрын
Thank you!
@hakha4363 жыл бұрын
Thanks for the vid dude, saved me a lot of time researching plastic springs around
@limboxis10224 жыл бұрын
A handy comment for everyone that does not use the metric system. 120°C = 250°F 160°C = 320°F 200°C = 390°F
@PattysLab4 жыл бұрын
Thankyou James
@michaelthibault79304 жыл бұрын
Accurate conversion requires only the ability to add, subtract, double, and divide by ten any given numbers; these operations are probably the easiest mathematical operations possible for the minimally numerate. Therefore: - double (2x) the C value to get first intermediate result (FIR); - from the FIR, subtract one-tenth of the FIR to get the second intermediate result (SIR); - add 32 to SIR to get the conversion value in ºF.
@Warhawk764 жыл бұрын
Very cool video, thanks so much for sharing. Liked and subbed
@PattysLab4 жыл бұрын
Thankyou awesome!
@Creative_Electronics3 жыл бұрын
Heel erg interessant project :)
@michaele80242 жыл бұрын
wish this would work for compression springs
@PattysLab2 жыл бұрын
It does ;)
@WaschyNumber13 жыл бұрын
They are not 3d printed, more backed in the oven, would like to see a 3d printed spring from a 3d printer and Testet with more materials. 🤔 Have you tried strimming nylon lines 🤔 Wher can I get cheap goid kapton tape?
@PattysLab3 жыл бұрын
I've used nylon in the test which is quite similar to weed trimmer line :), kapton tape probably from Amazon
@WaschyNumber13 жыл бұрын
@@PattysLab it would be interesting to see directly 3d printed springs working, if that would be possible 🤔 that they would work the same like the oven made ones.
@ionymous67335 ай бұрын
next time you make spaghetti, wrap one around a pen or rod of some kind, to form a spring, and leave it to dry.
@JustDuxАй бұрын
What about ABS?
@Floortile833 жыл бұрын
Can you print a slinky?
@PattysLab3 жыл бұрын
I've seen joel from 3d printing nerd do it here kzbin.info/www/bejne/gIvGppKMh6eplbs