Metal 3D Printed Compliant Check Valves! 

I just eye rolled so hard at this.

Bdumtis

Ba-dum tss

Masterful

Print India velve 😀

Haha we’d all be car thieves if we could download cars. Terrible anti piracy campaign… because downloading a movie is exactly like stealing someone’s car

i had seen that when i was a kid, look how far we actually came, we can actually download a car now lol

@@Shooritespecially when they stole the song

It's because that analogy was always so fucking stupid. It tries to imply that merely downloading a copy of some piece of information is the same as physically stealing an object from another person's possession, which is obvious bullshit. Also, yeah, I'd download a car if I could.

Thanks :D

My name is Andrzej Krystyniak

@@TurboSunShine 🔴 Why Islam not other religion 1-islam gives logical and simple idea for God - he is A perfect God - he is not a man nor a son of man nor an Idol or a trinity nor limited nor created - he is totally unique and to him belongs all the good qualities 2-Islam accepts all messengers of God -- about 124 0000 and in Islam, we love all the prophet of God and we can’t deny any of them - while in other religions such as Judaism for example - they reject Jesus and Mohammed -- and in Christianity they reject Muhammad ... but in Islam, we accept all . 3-in Islam, there is no mediator between you and God -- you can pray to God directly - there is no need for someone in between... 4- Islam is the Only religion that is Not named after a person or a tribe or a group, its name means submission to the One True God, if anyone anywhere at any time lived the life of submission to the true God alone , then he is a Muslim. 5- In Islam (worship) is not about mere rituals. it's a comprehensive term that includes any deed that pleases God. All good deeds are types of worship, smiling, being sincere at work, saying a nice word, and even treating one's spouse gently, all this is greatly rewarded by God. And in the opposite any deed that doesn't please God is a sin; talking bad about people is a sin, cheating, lying, hurting innocent people, harming the environment. 6-in Islam God is always forgiving - if you always repent (before death ) he will just accept you no matter how great sins you did >he forgive us out of his own grace - there is no price to be paid in order for him to forgive > so it's not like Christianity which says that God can't forgive except by blood of Jesus .. 7-Islam is a way of life - it organises each aspect in your life.. it has solutions and divine guidelines to problems in your life . 8--the sources of Islam also was collected and saved is also amazing -- it never happen to any book in history --- it's through the uncut chain of known narrators which date to prophet time ... besides the millions who memorised it from cover to cover since that time up till today - besides being documented in front of the prophet by known companions! 9-Islam prohibits blind following without knowledge and it invite us to use our brains to know truth, it is based on evidence and logic. The rational mind is the basis for religious accountability and responsibility. 10-the moral system of Islam is v high and perfect and thus the countries that apply Islamic laws in a proper way -- they have less moral crimes. 11-You won't lose Jesus if you accept Islam, but you will just correct your belief in him , In Islam, Jesus stands a good position in Islam as one of the messengers of God together with other messengers.. they were all special and they were all humans like us-- none of them must be worshiped -- we only worship God who sent them . we believe that Jesus was a noble Messenger of God but not divine,,,, we love Jesus and obey his true teachings and pray like him , fast like him , and a person won't lose Jesus if he accepts Islam -- but you will just correct his belief about him 12- Paradise in Islam is a real physical life for both Body and soul, you will go there , eating drinking marrying and meeting with prophets and having wonderful eternally unlike in other religions which they think its only spiritual life. 👉IN ISLAM THERE IS A PURE & CLEAR CONCEPTS OF GOD 🍃🍃🍃🍃🍃🍃🍃🍃 God is One and Unique: God has no partners, no equals and no rivals. God has no father, mother, sons, daughters or wives. God alone is worthy of all worship. God is the All-Powerful: God has full authority and power over all things. Obedience to God does not increase His Power, nor does disobedience decrease His power. God is the Most High: There is nothing above or comparable to God. The attributes of God do not resemble that of His creation. No part of God is present in anyone or anything. God is Perfect: God does not have any human limitations, such as resting on the seventh day after He created the universe. ..

@@hedexpl ok

COMPLETELY agree! I'm mad at RU-vid for waiting so long to show me this channel!

nahhh, i usually come back ;)

@@TurboSunShine do they give you free candy or 11mm sockets?

Haha, good luck, just don't tell them about the running costs👍

That was my thought as well. Use a shape where it's okay if the thing is a blob of metal. Then, "just" use high pressure to form it appropriately. Another alternative is to design the part in a way that the check valve has a sprue coming out the end. That springy one looks like it was designed to be drilled out. Yes, it's not print in place, but it's also not using acid.

Alternatively or additionally, there's a process done with automotive systems that uses an abrasive putty forced through the system to polish internal surfaces for coolant and exhaust systems. Could also electrochemically plate internal surfaces with a softer metal like copper better able to form a mating surface. Maybe even mix and match approaches.

Many good points! And definitely the way to go if you want to do this today.

Yeah, I posted the same idea before reading your comment, a drill will work perfectly and way easier.

Thanks! You probably already know what type of microscope i used at the end :p love your videos btw!

@@TurboSunShine Oh yeah, I immediately let out an "oooooh!" when I saw it, what a nice instrument! Definitely jealous! The models with A/B rotation axis are super cool too, being able to do a complete 3D scan at that level of detail is just bananas.

in this case yes!, however if you print this inside of a larger and more complex system, then you will probably not have the possibility to do so.

I had a similar thought about this as well. In a simple valve you could just have the supports attached to a surface made to be cut out. However, he just explained why his design really shines.

@Sunshine but isn't removing it via chemical reaction or mechanical or by abrasive (if we would create some kind of relive hole so abrasive with water would be able to remove supports) wouldn't also be considered cheateting like with pausing print(as we still adding manufacturing operation there and pausing gives us chance to give some kind of oring or something like that) i think in this case pausing would give us more possibilities

If you make the supports look like this

@@otherwayup Although then you would need to design a path that would let you pass water all the way through your support structure with enough space left over afterwards for all of those supports to flex free

i think the purpose of Tesla valves was to restrict alternatg Flow with a very high frequency, something with moving parts cannot do since it has a delay because something has to move. Disadvntage of them is of course that they cannt shut off the flow completely, but if you care more about delay than about leakage thats a wothy tradeoff

"Tesla valves although cool are nearly useless" for _what_ ? unqualified "useless" is plain wrong

In this case it would be possible! But the general concept was that the check valve is somewhere deep inside of a hydraulic system, hence it was removed with acid to show it's possible.

Yeah, also this kinda feels like a solution in search for a problem. And considering the length he had to go to for the manufacturing, and the drawbacks of 3D metal "printing", i have a very strong feeling that a traditional check valve would be a better solution here. Yes 3d lets one do stuff you couldn't to any other way, but that does not mean you have to or should to everything with it.

Hmm... would it be possible to begin doing this while removing the support structures? I'm imagining a cycling medium-high-pressure system using nitric acid as the fluid. While the support structure is being removed, nitric acid simply flows back and forth through the valve with no real pressure. Once the structures are sufficiently dissolved, the cantilever begins pressing the sealing surfaces together. Then you start to develop pressure changes. On the forward cycle, nitric acid flows through the valve, dissolving a little bit more of the prepared surface of the seal area. On the reverse cycle nitric acid under pressure presses the seal area together, beginning the wear-in process. Keep that cycle going for several tens of thousands of cycles, and you should get some decent wear-in, right? And as for introducing vibration... a high-pressure pulsation that causes valve chatter shouldn't be that hard to design... I think it's one of the problems that typically faces high-pressure systems. Using induced valve chatter during construction to improve the system's performance seems like karmic balance.

Sounds like a fun project, have you tried replacing the sealing ball with a double headed plunger? should seal and move a lot better than if you 3d-print a ball