3d printing articles 2018

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What is 3D Printing ?

3D printing is also known a additive manufacturing, is the process of creating an object by “printing” or laying down material layers until the object is formed. Like an office printer that puts 2D digital files on a piece of paper, a 3D printer creates components by depositing thin layers of material one after another using a digital blueprint until the exact types of components required has been created. 3D printing has the potential to transform science and technology creating bespoke and low-cost appliances which have previously required dedicated facilities. The inception of 3D printing can be traced back to 1976, at that time inkjet printer also invented.

System Requirements

Current and possible technology:

1.Scaffold based approaches

  • Porogen leaching
  • Phase separated scaffolds
  • Gas foaming

2.Textile technologies

  • Electrospinning
  • Knitting and braiding

3.Direct 3D printing technologies

  • Stereo lithography
  • Selective laser sintering
  • Three dimensional printing
  • Systems based on extrusion or direct writing
  • Indirect 3D printing

Mechanical Components

  • Parts of the 3D printer
  • Print base and print head
  • Bionik, extracellular matrix arranged in which cells are layer by layer arranged in particular manner
  • Extracellular matrix should have the same viscous properties as embryonic tissue

Mechanical Processes

There are two types of techniques used

  1. Selective Laser Sintering

The machine uses a computer controlled laser to draw the button cross section onto the surface of a bed coated with a powdered polymer that melts and fuses where struck by the laser. It consists of two pistons and a roller. The build piston moves upwards and the roller pushes the polymeric powder into the build piston. The build pistons is then lowered to depth corresponding to the section’s thickness. The feed piston is moves up again and the roller pushes some of more material. And the next cross section is drawn by directly on top of the previous one. This is repeated until the parts is finished.

2.Fusion Deposition Modeling

The FDM technology is works using a plastic filament or metal wire which is unwound from a coil and supplies materials to an heated extrusion nozzle which can move in any directions. The molten polymeric material is dropped in the form of beads. It instantly solidifies when it exits nozzle forming one layer.

3D Printing Process

Using a 3D digital CAD model as the Blueprint, successive layers of material are precisely deposited or fused by computer controlled print head into the desired 3 dimensional shape. No machining of the part is required, thus no raw material is wasted.

3D Cad Model –> STL file –> Slicing Software –>Layer Slices and Tool Path –> 3D Printer –> 3D Object

Diy 3D Printer

Hardware

  • Control module – Controller and motor driver
  • Extruder module – Feed and melt filament
  • Router module – XYZ axis movement
  • Print Bed module- Printing bed

Software

  • Draw – Tinkercad
  • Print – Repetier, Ponterface


3D Bioprinting Organs

  • Include growth factors in the scaffolds
  • Have biodegradable scaffolds rather than non-ones or bio active as well
  • Having nano-modification on the scaffolds for better cell in-growth
  • Needs to be included in the scaffold: extracellular matrix, growth factors, vascular network and different cell types
  • Living cells will be patterned into hydro-gel tissue scaffolds.


3D Printing the Future

Industries that apply 3DP today and will apply in future, in case the intended adoption is put into practice is in percentage %

  • Automotive and Aerospace = Current 29% In future 49%
  • Plastics = Current 38% In future 45%
  • Mechanical and plant engineering = Current 29% In future 44%
  • Electronics = Current 27% In future 43%
  • Pharma and Medical = Current 28% In future 38%
  • Consumer goods = Current 18% In future 26%
  • Energy = Current 14% In future 23%
  • Logistics and Transport = Current 10% In future 16%

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  19. Hey, how’s it going?

    I want to pass along some very important news that everyone needs to hear!

    In December of 2017, Donald Trump made history by recognizing Jerusalem as the capital of Israel. Why is this big news? Because by this the Jewish people of Israel are now able to press forward in bringing about the Third Temple prophesied in the Bible.

    Jewish Rabbis have publicly announced that their Messiah will be revealed in the coming years who will be a leader and spiritual guide to all nations, gathering all religions under the worship of one God.

    Biblical prophecy tells us that this Jewish Messiah who will take the stage will be the antichrist “who opposes and exalts himself above all that is called God or that is worshiped, so that he sits as God in the temple of God, showing himself that he is God” (2 Thessalonians 2:4). For a time he will bring about a false peace, but “Therefore when you see the ‘abomination of desolation,’ spoken of by Daniel the prophet, standing in the holy place (Matthew 24:15)…then there will be great tribulation, such as has not been since the beginning of the world until this time, no, nor ever shall be” (Matthew 24:21).

    More importantly, the power that runs the world wants to put a RFID microchip in our body making us total slaves to them. This chip matches perfectly with the Mark of the Beast in the Bible, more specifically in Revelation 13:16-18:

    “He causes all, both small and great, rich and poor, free and slave, to receive a mark on their right hand or on their foreheads, and that no one may buy or sell except one who has the mark or the name of the beast, or the number of his name.

    Here is wisdom. Let him who has understanding calculate the number of the beast, for it is the number of a man: His number is 666.”

    Referring to the last days, this could only be speaking of a cashless society, which we have yet to see, but are heading towards. Otherwise, we could still buy or sell without the mark amongst others if physical money was still currency. This Mark couldn’t be spiritual because the word references two different physical locations. If it was spiritual it would just say in the forehead. RFID microchip implant technology will be the future of a one world cashless society containing digital currency. It will be implanted in the right-hand or the forehead, and we cannot buy or sell without it. Revelation 13:11-18 tells us that a false prophet will arise on the world scene doing miracles before men, deceiving them to receive this Mark. Do not be deceived! We must grow strong in Jesus. AT ALL COSTS, DO NOT TAKE IT!

    “Then a third angel followed them, saying with a loud voice, “If anyone worships the beast and his image, and receives his mark on his forehead or on his hand, he himself shall also drink of the wine of the wrath of God, which is poured out full strength into the cup of His indignation. He shall be tormented with fire and brimstone in the presence of the holy angels and in the presence of the Lamb. And the smoke of their torment ascends forever and ever; and they have no rest day or night, who worship the beast and his image, and whoever receives the mark of his name” (Revelation 14:9-11).

    People have been saying the end is coming for many years, but we needed two key things. One, the Third Temple, and two, the technology for a cashless society to fulfill the prophecy of the Mark of the Beast.

    Visit http://WWW.BIBLEFREEDOM.COM to see proof for these things and why the Bible truly is the word of God!

    If you haven’t already, it is time to seek God with all your heart. Jesus loves you more than you could imagine. He wants to have a relationship with you and redeem you from your sins. Turn to Him and repent while there is still hope! This is forever…God bless!

    “EITHER HUMAN INTELLIGENCE ULTIMATELY OWES ITS ORIGIN TO MINDLESS MATTER OR THERE IS A CREATOR…” – JOHN LENNOX

    We all know God exists. Why? Because without Him, we couldn’t prove anything at all. Do we live our lives as if we cannot know anything? No. So why is God necessary? In order to know anything for certain, you would have to know everything, or have revelation from somebody who does. Who is capable of knowing everything? God. So to know anything, you would have to be God, or know God.

    A worldview without God cannot account for the uniformity and intelligibility of nature. And why is it that we can even reason that God is the best explanation for this if there is no God? We are given reason to know or reject God, but never to know that He does not exist.

    It has been calculated by Roger Penrose that the odds of the initial conditions for the big bang to produce the universe that we see to be a number so big, that we could put a zero on every particle in the universe, and even that would not be enough to use every zero. What are the odds that God created the universe? Odds are no such thing. Who of you would gamble your life on one coin flip?

    Is there evidence that the Bible is the truth? Yes. Did you know that the creation accounts listed in the book of Genesis are not only all correct, but are also in the correct chronological order? That the Bible doesn’t say the Earth was formed in six 24-hour days but rather six long but finite periods of time? That the Bible makes 10 times more creation claims than all major “holy” books combined with no contradictions, while these other books have errors in them? The Bible stood alone by concurring with the big bang saying, “In the beginning God created the heaven and the earth” (Genesis 1:1); and says our universe is expanding, thousands of years before scientists discovered these things. Watch a potential life-changing video on the front page of http://WWW.BIBLEFREEDOM.COM with Astronomer(PhD) Hugh Ross explaining all these facts based on published scientific data. He has authored many books, backed even by atheist scientists.

    Jesus came to pay a debt that we could not; to be our legal justifier to reconcile us back to a Holy God; only if we are willing to receive Him: “For the wages of sin is death…” (Romans 6:23).

    God so loved the world that He gave us His only begotten son, so that whoever believes in Him, through faith, shall not perish, but have everlasting life. Jesus says if we wish to enter into life to keep the commands! The two greatest commands are to love God with all your heart, soul, strength, and mind; and your neighbor as yourself. All the law hang on these commands. We must be born of and lead by the Holy Spirit, to be called children of God, to inherit the kingdom. If we are willing to humble ourselves in prayer to Jesus, to confess and forsake our sins, He is willing to give the Holy Spirit to those who keep asking of Him; giving us a new heart, leading us into all truth!

    Jesus came to free us from the bondage of sin. The everlasting fire was prepared for the devil and his angels due to disobedience to God’s law. If we do the same, what makes us any different than the devil? Jesus says unless we repent, we shall perish. For sin is the transgression of the law. We must walk in the Spirit so we may not fulfill the lusts of the flesh, being hatred, fornication, drunkenness and the like. Whoever practices such things will not inherit the kingdom (Galatians 5:16-26). If we sin, we may come before Jesus to ask for forgiveness (1 John 2:1-2). Evil thoughts are not sins, but rather temptations. It is not until these thoughts conceive and give birth by our own desires that they become sin (James 1:12-15). When we sin, we become in the likeness of the devil’s image, for he who sins is of the devil (1 John 3:8); but if we obey Jesus, in the image of God. For without holiness, we shall not see the Lord (Hebrews 12:14).

    The oldest religion in the world is holiness through faith (James 1:27). What religion did Adam and Eve follow before the fall? Jesus, Who became the last Adam, what religion does He follow? Is He not holy? He never told us to follow the rituals and traditions of man but to take up our cross and follow Him (Luke 9:23). There are many false doctrines being taught leading people astray. This is why we need the Holy Spirit for discernment. Unlike religion, holiness cannot be created. It is given to us from above by the baptism of the Spirit. Jesus is more than a religion; He is about having a personal relationship with the Father. Start by reading the Gospel of Matthew, to hear the words of God, to know His character and commandments. Follow and obey Jesus, for He is the way, the truth, and the life!

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