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How to 3D print custom rubber stamps
Ash(
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2 hours
Let's make some stamps! Why bother buying a pre-made design when you can create one yourself? In this guide, we'll be creating our own howchoo logo stamp using a 3D printer.
I’ve designed a couple of handles to 3D print for my stamps. You can download them from Thingiverse to use yourself. I’ve created a wide rectangle and square shaped designs.
For the actual stamp part, we’ll be designing our own mold to 3D print and filling it with silicone rubber.
| 3D printer | × | 1 | ||
| OOMOO 30 liquid silicone rubber | × | 1 |
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h/3dprinting • 90 guides
h/art • 13 guides
You can use any 3D design software you like, I’ll be using Blender. The idea is to trace the logo and create a 3D shape from the outline. If you’d like to follow along with me, download a copy of Blender and keep reading.
Upload the design as a background image
To open the sidebar we need, press N.
Under the Background Images section, upload the stamp design. Press 5 on the numpad to orient the camera and expose the background image. If it's missing, try pressing 5 again.
Outline the design
Create a plane and delete three of the vertices, this will leave you with a single point. Position this point over the edge of your stamp design. Press e to generate a new point and draw a line from this one. Using this technique, outline the design of your stamp, merging the final points together.
Make a 3D shape from the outline
To create a face from the new outline, press A. This will highlight all of the points around the design. Press F to turn the selected points into a face. Select the new face and press E + Z to extrude the face up. This will turn the design into a 3D shape.
We’ll need a base for our stamp design. This base will fit inside our 3D printed handle. After creating the base, we’ll punch a hole out in the shape of our design.
This will make an empty cavity that can be filled with silicone. Follow the steps below to create your own, or download the one I created from Thingiverse.
Design the stamp base
The design I made will need to fit on a 4cm x 9cm base. To create the base, I’ll create a 4cm x 9cm plane and extrude the top face up.
Punch the base out of the mold block
This prism will need to be punched out of our mold block. We’ll do this using a boolean modifier. Overlap the 3D base with the silicone mold block until it’s lined up as desired. I’m leaving enough room for the edges to retain some stability so I don’t break the mold when removing the silicone.
Once the base object is overlapping the mold block, apply a Difference boolean modifier to the block. The modifier should be set to use the base object.
Just like the base for our stamp, we'll be using a boolean modifier to punch out a shape with our 3D design. Overlap the stamp design object with the mold block and apply the difference modifier.
Export the final mode to an stl and prepare it for printing with your favorite slicer. I'll be using Cura to prepare my printer file. You will need to experiment with your 3D printer to find the most ideal settings to print your mold with. I'm using PLA filament at 240° with a .2mm layer height. Smoothing out your molds or printing them with fine lines can help preserve design quality. As with any project, you’ll need to experiment to find the most desirable results.
Now that everything is printed, it’s time to fill them with silicone. I’ll be using Oomoo for my project, but you can experiment with other materials. You’ll find that certain materials work better than others depending on the design and filament used.
Once enough time has passed to cure your molds, it’s time for a test stamp. Just glue the stamp, base, and handle pieces together. Congratulations—your stamps are ready to go. Find an ink pad and get stamping!
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Michael(
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Why we do wear masks at Halloween anyway? In its Gaelic and pagan roots, Halloween involved souling or costuming yourself in a disguise to keep evil spirits from seeing you.
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Organ printing: how 3D bioprinting technology has advanced and what is hindering its development In research centers and hospitals around the world, advances in 3D printing and bioprinting are providing new opportunities for human treatment and scientific research. In the coming decades, bioprinting could be the next major milestone in healthcare and personalized medicine.
Let's talk about bioprinting technology, the latest advances in the industry and the limitations that professionals face.
How a 3D printer works
Traditional printers, like the one you have at home or office, work in two dimensions. They can print text or images on a flat surface (usually paper) using the x (horizontal) and y (vertical) dimensions. 3D printers add another dimension - depth (z). During the printing process, the printer heads can move up and down, left and right, back and forth, but instead of delivering ink to paper, they distribute various materials - polymers, metal, ceramics and even chocolate - until the "print" of a holistic, voluminous object , layer by layer in a process known as "additive manufacturing".
To create a 3D object, you need a blueprint for it, a digital file created with modeling software. After its creation, the computer-generated model is sent to the printer. Your chosen material is loaded into the machine and ready to be heated to easily flow out of the printer nozzle. As the printer reads the plan, its head moves, depositing successive layers of the selected material to create the final product.
As each layer is printed, it is solidified either by cooling or by mixing two different solutions delivered by the printer head. The new layers precisely lay down on the previous ones to make a stable, cohesive element. In this way, you can create almost any shape, including a moving one.
3D printing allows you to create objects with geometric structures that would be difficult or impossible to make in other ways. A wide range of products are already being created using 3D printers, including jewelry, clothing, toys, and high-end industrial products.
Even a 10-year-old Moscow schoolboy has learned how to work with a 3D printer: he prints 3D figures to order and sells them through Instagram.
How a bioprinter works
Bioprinters work in much the same way as 3D printers, with one key difference - they deposit layers of biomaterial, which can include living cells, to create complex structures such as blood vessels or skin tissue.
Living cells? Where do they get them? Every tissue in the body is made up of different types of cells. The required cells (kidney, skin, and so on) are taken from the patient and then cultured until there are enough of them to create "bio-ink" that is loaded into the printer. This is not always possible, therefore, for some tissues, stem cells are taken that are capable of becoming any cell in the body (organism), or, for example, porcine collagen protein, seaweed and others.
Chitosan, a polysaccharide obtained from the external skeleton of mollusks (eg shrimp) or by fermenting fungi, is often used in bioprinting.
This material has high biocompatibility and antibacterial properties. Its disadvantage is the low rate of gelation. Another popular material is a polysaccharide isolated from seaweed called agarose. Its advantages are high stability and the possibility of non-toxic cross-linking during research. However, this biomaterial does not decompose and has poor cell adhesion (the ability of cells to stick together with each other and with other substrates).
The primary structural protein found in the skin and other connective tissues, collagen, is of high biological importance. It is the most abundant protein in mammals and a major component of connective tissue. Its disadvantages for bioprinting include the property of acid solubility. More information about biomaterials can be found here.
Based on computer designs and models, often scans and MRIs taken directly from the patient, the printer heads place the cells exactly where they are needed, and within a few hours an organic object is built from a large number of very thin layers.
Organovo bioprinter creates tissues that mimic the structure and composition of various human organs
Source: Pbs.org
Scaffolding for ear or nose replacement at Wake Forest University in Winston-Salem, North Carolina
Source: CBS News
Computer displays an image of a "scaffold" for the human ear, created in the laboratory of Wake Forest University in Winston-Salem, North Carolina
Source: CBS News
Usually more than just cells are needed, so most bioprinters also supply some kind of organic or synthetic "glue" - a soluble gel or collagen scaffold to which cells can attach and grow. This helps them form and stabilize in the correct shape. Surprisingly, some cells can take the correct position on their own without any "scaffolding". How do they know where to go? How do embryonic cells develop in the uterus, or does adult tissue move to repair damage? Same here.
Universities, researchers and private companies around the world are involved in the development of bioprinting technologies.
Let's take a look at some of the amazing things they are working on.
Bioprinting in Russia
3D Bioprinting Solutions is a biotechnology research laboratory founded by medical company INVITRO. The activity of the laboratory is the development and production of bioprinters and materials in the field of three-dimensional bioprinting and scientific research. August 23, 20193D Bioprinting Solutions laboratory sent a new batch of cuvettes to the ISS to continue experiments on bioprinting in space, which began in 2018. This was reported in the press center of the laboratory. This time it is planned to use organic and inorganic components to assemble bone tissue on the world's first space bioprinter Organ.Aut.
Symposium "Biofabrication in Space"
Source: Zdrav.Expert
Organ.Aut magnetic bioprinter
Source: Zdrav.Expert
The astronauts will also grow protein crystals and experiment with printing biofilms of bacteria to study their behavior in zero gravity.
Russian scientists expect to receive unique scientific data that can be applied in the development of new drugs.
Scientific Director of 3D Bioprinting Solutions and Leading Researcher of the Institute of Regenerative Medicine, Candidate of Medical Sciences Vladimir Mironov, in his speech at the Department of Anatomy of Sechenov University on September 2, noted: “Living cells, tissues and human organs will be synthesized already in the current century. To do this, morphological sciences, such as microscopic anatomy and histology, must be digitized or digitalized, that is, digitized and made available for computer programs of robotic bioprinters, since without digital models it is impossible to print human tissues and organs.”
Bioprinting around the world
Every year, millions of people around the world need bone grafting. Modern bone grafts often use cement-based synthetic material in combination with the patient's own bone.
However, the use of these materials has a number of limitations - some transplants caused rejection and inflammatory processes in patients. Reproduction of the natural bone-cartilage "interface" has also been problematic.
However, a team at Swansea University in 2014 developed a bioprinting technology that allows the creation of an artificial bone prosthesis in the exact shape of the desired bone, using a biocompatible material that is both durable and regenerative. At the same time, scientists from the University of Nottingham in England were working on similar studies.
It takes about two hours to print a small bone. Therefore, surgeons can do it right in the operating room. This part of the bone is then covered with adult stem cells that can develop into almost any other type of cell. This is combined with bio-ink from the printer, a combination of polylactic acid (which provides mechanical strength to the bone) and alginate, a gel-like substance that serves as a shock-absorbing material for cells.
The final product is then implanted into the body, where it will completely disappear within about three months and be replaced by new bone.
Researchers hope that in the future, bioprinted bones can be created with sufficient reliability to support complex spinal reconstruction, and that the bone material will be further improved to increase its compatibility with cartilage cells.
Source: ETH Zurich
Successful 3D printing of human cartilage may soon completely replace artificial implants for people in need of reconstructive surgery. Back in 2015, scientists in Zurich developed technology that would allow hospitals to print a full-size human nose implant in less than 20 minutes. They believe that any cartilage implant can be made using their technique.
Researcher Matti Kesti described the technology as follows:
“
“A serious car accident can cause the driver or passenger to suffer complex nose injuries.
The nose can be restored by creating a 3D model on a computer. At the same time, a biopsy of the patient is performed and cartilage cells are removed from the victim's body, such as from a knee, a finger, an ear, or fragments of a broken nose. The cells are spawned in the laboratory and mixed with the biopolymer. From this suspension, a model of nasal cartilage is created using a bioprinter, which is implanted into the patient during surgery. In the process, the biopolymer is used simply as a mold. It is subsequently broken down by the body's own cartilage cells. And in a couple of months it will be impossible to distinguish between the graft and the person’s own nasal cartilage.”
Matti Kesti
Since the implant was grown from the body's own cells, the risk of rejection will be much lower than for an implant made of, say, silicone. An additional advantage is that the bioimplant grows with the patient, which is especially important for children and young people.
If a person is severely burned, healthy skin can be taken from another part of the body and used to cover the affected area. Sometimes intact skin is missing.
Researchers at Wake Forest School of Medicine have successfully designed, built and tested a printer that can print skin cells directly onto a burn wound. The scanner very accurately determines the size and depth of damage. This information is sent to a printer and skin is printed to cover the wound. Unlike traditional skin grafts, it only takes a patch of skin one-tenth the size of a burn to grow enough cells to print. While this technology is still in the experimental stage, the researchers hope that it will be widely available within the next five years.
As already mentioned, 3D printers print products in layers, and since the skin is a multi-layered organ with different types of cells, it is well suited for this type of technology. However, researchers still have a lot of problems to solve, in particular, how to prevent damage to cells from the heat generated by the printer.
And of course, like most parts of the human body, the skin is more complex than it first appears—there are nerve endings, blood vessels, and a host of other aspects to consider.
Blood vessels
Biomechanical engineer Monica Moya holding a petri dish with printed alginate-based biotubes. Biotubes can act as temporary blood vessels similar to blood vessels that help create a patch of living tissue.
Source: embodi3D
With tens of thousands of miles of veins, arteries and capillaries in the human body, researchers are working to replace them if they ever wear out. The creation of viable blood vessels is also essential for the proper functioning of all other potential bioprinted body parts.
Biomechanical Engineer Monica Moya of Livermore National Laboratory. Lawrence uses bioprinting to create blood vessels. The materials created by her bioprinters are engineered to allow small blood vessels to develop on their own.
This development takes time, so vials of cells and other biomaterials are printed to help deliver vital nutrients to the printed environment. After a while, self-assembled capillaries connect with bioprinted tubes and begin to deliver nutrients to cells on their own, mimicking the work of these structures in the human body.
Internal organs
Many researchers hope that in 20 years the lists of patients waiting for organ transplants will become a thing of the past. They envision a world where any organ can be printed and transplanted in just a few hours, without rejection or complications, because these organs will be created from body cells according to the individual characteristics of each patient. Currently, bioprinting of fully functional complex internal organs is not possible, but research is ongoing (and not without success).
Bladder
For example, the bladder is already printed. In 2013, at Wake Forest University in the US, researchers successfully took cells from a patient's original, poorly functioning bladder, cultured them, and added additional nutrients.
The 3D shape of the patient's bladder was then printed and the cultured cells soaked through it. The form was placed in an incubator and, when it reached the desired condition, it was transplanted into the patient's body. The mold will eventually collapse, leaving only the organic material. The same team successfully created viable urethras.
Physicians and scientists at the Wake Forest Institute for Regenerative Medicine (WFIRM) were the first in the world to create laboratory-grown organs and tissues that were successfully transplanted into humans. Right now they are working on growing tissues and organs for more than 30 different areas of the body, from the kidneys and trachea to cartilage and lungs. They also aim to accelerate the availability of these treatments to patients.
Scientists in Australia are doing similar research as well. They used human stem cells to grow a kidney organ that contains all the necessary cell types for a kidney.
Such cells can serve as a valuable initial source for bioprinting more complex kidney structures.
MD, Professor of Urology, Professor of the Institute of Regenerative Medicine Anthony Atala shows a kidney created by a bioprinter. A modified desktop inkjet printer sprays cells instead of ink. The cells were cultured from the patient and the structural template for the kidney was obtained from the MRI (so it is the correct size and shape).
Using this technology, back in 2001, Atala printed and successfully transplanted a bladder into a young man, Jake.
Source: TedEd
Heart
Heart cells, laboratory-grown organelles. Source
Surprisingly, it is the human heart that can become one of the easiest organs to print, since, in fact, it is a pump with tubes. Of course, everything is not so simple, but many researchers believe that humanity will learn to print hearts before kidneys or liver.
Researchers at the Wake Forest Institute for Regenerative Medicine in April 2015 created "organoids" - 3D printed fully functional, beating heart cells.
In April 2019, Israeli scientists printed the world's first 3D heart. It is still very small, the size of a cherry, but it is able to perform its functions. The 3D heart with blood vessels uses personalized "ink" of collagen, a protein that supports cell structures, and other biological molecules.
A Tel Aviv University researcher holds the world's first 3D printed heart on April 15, 2019.
Source: Haaretz
“This is the first time anyone anywhere has successfully designed and printed a whole heart with cells, blood vessels, ventricles and chambers,” said Tel Aviv University scientist Professor Tal Dvir.
So far, scientists have been able to print tissue from cartilage and the aortic valve, for example, but the challenge has been to create tissue with vascularity—the blood vessels, including capillaries, without which organs cannot survive, let alone function.
The Tel Aviv scientists started with human adipose tissue and separated the cellular and non-cellular components. They then reprogrammed the cells to become undifferentiated stem cells, which could then become cardiac or endothelial. Endothelium - a single layer of flat cells lining the inner surface of the heart cavities, blood and lymphatic vessels. Endothelial cells perform many functions of the vascular system, such as controlling blood pressure, regulating the components of blood clotting, and the formation of new blood vessels.
Non-cellular materials, including a large amount of proteins, were processed into a "personalized hydrogel" that served as "printing ink".
It will be years before this technology can create organs for efficient transplantation. However, the achievements of scientists in Tel Aviv are a huge milestone along the way.
Medical research and pharmacology
One of the key potential uses for bioprinted living materials is in the field of medical and drug research.
Bioprinted tissues have several cell types with different densities and key architectural features. This allows researchers to study the impact of various diseases on the body, the stages of disease progression and possible treatments in the natural microenvironment.
One of the most impressive developments in recent years is the development of a desktop brain at the ARC Center of Excellence in 2016. The researchers were able to use a 3D printer to create a 3D printed six-layer structure that includes nerve cells that mimic the structure of brain tissue.
This opens up huge potential benefits for researchers, pharmaceuticals and private companies, because it will allow them to test new products and drugs on tissue that accurately reflects the responses of human brain tissue, as opposed to animal samples, which may cause a completely different response. The desktop brain can also be used to further investigate diseases such as schizophrenia or Alzheimer's.
We're a long way from printing the brain, but being able to arrange cells to form neural networks is a significant step forward.
By allowing researchers to work with human tissues in real time, testing processes can be greatly accelerated and results can be more realistic and accurate. It will also reduce the need to use laboratory animals for medical tests and potentially dangerous human testing.
Medical simulators and data registries
Source: Simbionix
About 3,000 medical simulators are currently in use around the world to help doctors practice complex procedures. Virtual blood vessels, 3D printed organs... and no animal suffers!
The American company 3D Systems created an industry segment called VSP (Virtual Surgical Planning). This approach to personalized surgery combines expertise in medical imaging, surgical simulation and 3D printing. Surgeons using the Simbionix medical simulator for the first time often report feeling physical pain while empathizing with their virtual patient - the experience is so realistic. Organs and tissues look completely real.
When stitching an organ, the surgeon sees on the screen a needle that enters the tissue, and pulls the thread. If the doctor does something wrong, the virtual blood vessels break and the organ begins to bleed. These simulators were developed by the Israeli company Symbionix, which was acquired by 3D Systems in 2014.
On September 3, 2019, the Radiology Society of North America (RSNA) and the American College of Radiology (ACR) announced the launch of a new 3D Medical Printing Clinical Data Registry to collect data on treatment outcomes using 3D printing at the point of care. This information will be a powerful tool to assess and improve patient care in real time, drive ongoing research and development, and inform patients and healthcare professionals about the best course of care.
“
“The creation of a joint RSNA-ACR 3D printing registry is essential to the advancement of clinical 3D printing. The registry will collect data to support the appropriate use of this technology and its implications for clinical decision making.
”
William Widock, Professor of Radiology at the University of Michigan and Chairman of the RSNA 3D Printing Special Interest Group (SIG)
According to the RSNA, the information in the registry will allow for the necessary analysis to demonstrate the clinical value of 3D printing. Due to the wide variety of clinical indications, different technologies for creating physical models from medical images, and the complexity of the models, it is problematic to choose the optimal treatment method. The registry will help solve this problem.
Bioprinting software
Bioprinter and bioprinting software manufacturer Allevi introduced Allevi Bioprint Pro software on September 5, 2019. Built-in model generation and integrated slicing will allow you to focus more on experimenting, rather than setting up the printer. The program runs entirely in the cloud, which means you can create your biostructures, define materials, and track prints right from a web browser on any computer.
According to the development team, the new bioprinter with the above software is powerful and easy to use and represents another piece of the puzzle on the way to 3D printed organs.
At the same time, CELLINK, the first bio-ink company, announced the launch of a new product to become the most flexible bio-printing platform on the market. The BIO X6 bioprinter, which has no analogues at the moment, has the ability to combine more bioprinting materials, cells and tools.
Why is this taking so long?
Complex body structure
The human body and its various components are much more complex than a plastic toy. The human organ has a complex network of cells, tissues, nerves, and structures that must be arranged in specific ways to function properly. From placing thousands of tiny capillaries in the liver to actually getting a printed heart that "beats" and contracts in the human body, there is still a lot of research and testing.
Legal regulation
In addition, bioprinting technologies, like all new medical treatments, must pass safety tests and due process of regulation before they become available.
Special software and hardware
It also takes time to develop special software and hardware. These programs can be written only with the appropriate data (medical, clinical, statistical, mathematical, and so on), which someone must first collect, analyze, systematize and digitize.
Working through all of these steps requires the integration of technologies from various fields, including engineering, biomaterials science, cell biology, physics, mathematics, and medicine. So we need to be a little more patient.
The main thing is to know that those who work in the field, doctors and engineers, programmers and scientists are making progress every day both in bioprinting technology itself and in understanding how it can be used and improved. Although we are not quite there yet, there is no doubt that medicine will be very different in 10-20 years, thanks also to bioprinting.
In brief
Bioprinting is an extension of traditional 3D printing.
Bioprinting can produce living tissue, bones, blood vessels, and possibly entire organs for use in medical procedures, medical training, and testing.
The cellular complexity of a living organism has made 3D bioprinting slower to develop than conventional 3D printing.
Bioprinting technology could enable the generation of patient-specific tissues to develop precise, targeted and fully personalized treatments.
We still have a long way to go before we can create fully functioning and viable organs for human transplantation.
Related materials: Russia was the first in the world to print living tissues in space using a bioprinter
5 most amazing things created using 3D printing
A rocket printed on a 3D printerwill go into orbit in 2021 "Exhibits touching is allowed”: how 3D printing is transforming museums
© Rusbase, 2019
Author: Nadezhda Aleinik
Cover photo: etonastenka, Depositphotos
Printing press | Vokrug Sveta
- Photo
- TASS / Legion-Media
- Photo
- TASS / Legion-Media
A variety of materials are used for printing: plastics, silicone, wax, sugar, and so on.
They can imitate all sorts of textures - from smooth soft plastic to porous but durable ivory. In specialized stores, printer plastic is sold in reels
The simplest and most complex 3D printers work according to the same scheme - the device collects the object layer by layer, as if from bricks. There are many varieties of 3D printers, but the principle of their work is mainly based on two main methods: inkjet and laser. An inkjet 3D printer applies droplets of material to a substrate, similar to how a conventional printer applies ink to a sheet of paper. The drops solidify, after which another layer is applied on top. A laser 3D printer heats the powder particles of the selected material with a laser, fusing them together. The fused particles form a single piece of material, after which another layer of powder can be poured on top and the process repeated. The laser method is good because it allows you to make objects even from metal. If you need a part of a complex shape with different textures, use printers that print with two materials.
One of them is the main one, the second plays the role of a substrate and fills the voids, and after the end of the process it is removed with a solvent. This process makes it possible to produce objects with openwork details, such as a model of the Eiffel Tower.
3D printer products can be touched, tried on and even eaten.
- Photo of
- Sebastian Geisler / Legion-Media
Part of the details of the concept car LaFerrari presented at the 83rd Geneva Motor Show, 3D printed. In terms of reliability, they are not inferior to traditional ones.
- Photo
- Sebastian Kaulitzki / Alamy / Legion-Media
Bioprint uses food ingredients instead of plastic or metal.
