Tootfinder

3D Printing a Cassette Is Good Retro Fun
https://poliverso.org/display/0477a01e-9907b710-f32194c0da636210
3D Printing a Cassette Is Good Retro Fun The cassette is one of the coolest music formats ever, in that you could chuck them about with abandon…

Testing a 3D printed printing registration system for doing multicolor relief prints today…
#3Dprinting #printMaking #DIY

A quick 40-minute #FreeCAD project today morning that just finished printing (more than 12 hours!) and is now assembled - air filter with a circular HEPA filter and a silent computer fan. Tomorrow will print the bottom adapter and it’s good to go. With the specced airflow of 83 m3/h and power consumption of 3w, this will be quite a nice and quiet addition to the home.

A Virtual Environment for Collaborative Inspection in Additive Manufacturing
Vuthea Chheang, Brian Thomas Weston, Robert William Cerda, Brian Au, Brian Giera, Peer-Timo Bremer, Haichao Miao
https://arxiv.org/abs/2403.08940

A Virtual Environment for Collaborative Inspection in Additive Manufacturing
Additive manufacturing (AM) techniques have been used to enhance the design and fabrication of complex components for various applications in the medical, aerospace, energy, and consumer products industries. A defining feature for many AM parts is the complex internal geometry enabled by the printing process. However, inspecting these internal structures requires volumetric imaging, i.e., X-ray CT, leading to the well-known challenge of visualizing complex 3D geometries using 2D desktop interfa…

Being a printmaker with a 3D printer means that when you forgot to get (or make) a card and you've only got two hours before an event you've got things covered.
#art #printMaking #making <…

https://www.cnckitchen.com/blog/conical-slicing-a-different-angle-of-3d-printing - Conical Slicing: A different angle of 3D printing.

A library close to us offers #3D printing service. You send them the design and they will print it for you, and then you come and pick it up. I still need to gather details as to what are the limitations around this service, but at first glance, pretty cool!

🏗️ Students build low-cost cold spray metal 3D printer prototype
#3dprinting

Students build low-cost cold spray metal 3D printer prototype
A team of Rice University students has developed a cold spray metal 3D printing device that relies on pressure and velocity rather than temperature to create a metal part. Their work could help expand the repertoire of metal additive manufacturing techniques, bringing down cost and enhancing the quality of making or repairing one-off complex metal parts.

Secure Information Embedding and Extraction in Forensic 3D Fingerprinting
Canran Wang, Jinwen Wang, Mi Zhou, Vinh Pham, Senyue Hao, Chao Zhou, Ning Zhang, Netanel Raviv
https://arxiv.org/abs/2403.04918

Secure Information Embedding and Extraction in Forensic 3D Fingerprinting
The prevalence of 3D printing poses a significant risk to public safety, as any individual with internet access and a commodity printer is able to produce untraceable firearms, keys, counterfeit products, etc. To aid government authorities in combating these new security threats, several approaches have been taken to tag 3D-prints with identifying information. Known as fingerprints, this information is written into the object using various bit embedding techniques; examples include varying the …

I finished a new three color print today… contemplating doing a whole series of balls. Another relief print on handmade paper created with 3D printed printing plates.
#art #mastoArt #printMaking…

In Gaza City, during the global fight against the novel coronavirus, innovative ideas emerged. Engineer Mohammed Abu Matar and his team at Tashkeel 3D used 3D printing technology to manufacture essential medical equipment to combat the pandemic. The team produced protective respirator face masks, and devices enabling patients to have shared ventilator use. From Al-Monitor:

This https://arxiv.org/abs/2401.17953 has been replaced.
link: https://scholar.google.com/scholar?q=a

Enhanced contact flexibility from nanoparticles in capillary suspensions
Hypothesis: Sample-spanning particle networks are used to induce structure and a yield stress, necessary for 3D printing of porous ceramics and paints. In capillary suspensions, a small quantity of immiscible secondary fluid is incorporated into a suspension. By further adding nanoparticles with a range of hydrophobicities, the structure of the bridges and microparticle-microparticle contacts should be modified, resulting in a tunable yield stress and shear moduli. Moreover, the compressibility…

Google Photos decided to give me a "memory" of one of my first ever pictures of my first 3D printer printing.
The AI is pretty sure this is a sewing machine.

Testing out a new roll of #3dPrinting filament. PolyTerra “Army Blue”
It’s not advertised as matte but it sure looks like.
#FilamentReviews

3D Printing in Custom PLA With a TPU Core
https://poliverso.org/display/0477a01e-ae954bcb-d2a270a0cab2ab8b
3D Printing in Custom PLA With a TPU Core [Stefan] from CNC Kitchen explored an unusual approach to a multi-material print by making custom PL…

Secure Information Embedding and Extraction in Forensic 3D Fingerprinting
Canran Wang, Jinwen Wang, Mi Zhou, Vinh Pham, Senyue Hao, Chao Zhou, Ning Zhang, Netanel Raviv
https://arxiv.org/abs/2403.04918

Secure Information Embedding and Extraction in Forensic 3D Fingerprinting
The prevalence of 3D printing poses a significant risk to public safety, as any individual with internet access and a commodity printer is able to produce untraceable firearms, keys, counterfeit products, etc. To aid government authorities in combating these new security threats, several approaches have been taken to tag 3D-prints with identifying information. Known as fingerprints, this information is written into the object using various bit embedding techniques; examples include varying the …

🦎 Chameleons inspire new multicolor 3D-printing technology
#technology

Chameleons inspire new multicolor 3D-printing technology
Inspired by the color-changing ability of chameleons, researchers have developed a sustainable technique to 3D-print multiple, dynamic colors from a single ink.

Today’s possibly impossible project. Un-hairball the 3D printer.
Left it printing for a couple of hours without looking and that’s what I got.
Hard to see how I can remove this blob without destroying crucial parts. Some wires went already. The built in heater doesn’t heat the plastic that far away, and the hair dryer I tried isn’t hot enough. Sigh.

Defect Localization Using Region of Interest and Histogram-Based Enhancement Approaches in 3D-Printing
Md Manjurul Ahsan, Shivakumar Raman, Zahed Siddique
https://arxiv.org/abs/2404.17015

Defect Localization Using Region of Interest and Histogram-Based Enhancement Approaches in 3D-Printing
Additive manufacturing (AM), particularly 3D printing, has revolutionized the production of complex structures across various industries. However, ensuring quality and detecting defects in 3D-printed objects remain significant challenges. This study focuses on improving defect detection in 3D-printed cylinders by integrating novel pre-processing techniques such as Region of Interest (ROI) selection, Histogram Equalization (HE), and Details Enhancer (DE) with Convolutional Neural Networks (CNNs)…

Generative AI is such an immense tech industry success story; just like NFTs, the Metaverse, self-driving cars, Mars colonies, smart speakers, cryptocurrencies, 3D-printed houses, augmented reality, food printing, 3D televisions, expert systems and flying cars before it!

Circular wave interference patterns. Inspired by a single-drop model:
https://twitter.com/Thangs3D/status/1772990127343566916
Now with Printables link for downloading / printing:

Thangs (@Thangs3D) on X
This water drop tray from @gazzaladradesig has been popular this week and for good reason! Not only is it stylish, but it also is very functional 😎 Model page: https://t.co/SA2M1GyVzl #3DPrinting

Dual-Wavelength SLA 3D Printing: Fast Continuous Printing With ROMP And RFP Resins
https://poliverso.org/display/0477a01e-62f4a760-a4c8b9d9866091a4
Dual-Wavelength SLA 3D Printing: Fast Continuous Printing With ROMP And RFP Resins As widespread as 3…

🗼 3D-printed “metamaterial” is stronger than anything in nature
#materials

3D-printed “metamaterial” is stronger than anything in nature
Australian scientists used an advanced 3D printing technique to create a super strong, super lightweight new “metamaterial.”

Thinking about the itsfoss post about not wanting folks to share their links on #Mastodon / the #Fediverse because whatever backend they have can't keep up with the requests...
As a

Laser driven melt pool resonances through dynamically oscillating energy inputs
Marco Rupp, Karen Schwarzkopf, Markus Doering, Shuichiro Hayashi, Michael Schmidt, Craig B. Arnold
https://arxiv.org/abs/2404.07195

Laser driven melt pool resonances through dynamically oscillating energy inputs
Spatially selective melting of metal materials by laser irradiation allows for the precise welding as well as the 3D printing of complex metal parts. However, the simple scanning of a conventional Gaussian beam typically results in a melt track with randomly distributed surface features due to the complex and dynamic behavior of the melt pool. In this study, the implications of utilizing a dynamically oscillating energy input on driving melt track fluctuations is investigated. Specifically, the…

And there it is. I had this wild idea on Monday, now I have a physical object. I learned Fusion 360 and 3D printing this week. Now I can make furniture. The front of this nightstand is a design made in Illustrator, and it locks into the drawer itself. If you want a different handle, there is a swapping system. The nightstand can be broken down into parts for shipping. Next stop: larger prototypes. #3DPrinting

Stop Stealing My Data: Sanitizing Stego Channels in 3D Printing Design Files
Aleksandr Dolgavin, Mark Yampolskiy, Moti Yung
https://arxiv.org/abs/2404.05106

Stop Stealing My Data: Sanitizing Stego Channels in 3D Printing Design Files
The increased adoption of additive manufacturing (AM) and the acceptance of AM outsourcing created an ecosystem in which the sending and receiving of digital designs by different actors became normal. It has recently been shown that the STL design files -- most commonly used in AM -- contain steganographic channels. Such channels can allow additional data to be embedded within the STL files without changing the printed model. These factors create a threat of misusing the design files as a cover…

RepTrap Keeps Watch Over Our Cold-Blooded Friends
https://poliverso.org/display/0477a01e-59fd2901-e0d58e8cceb8dc28
RepTrap Keeps Watch Over Our Cold-Blooded Friends Wait a second, read that title again. This isn’t a throwback 3D printing project at …

Coupling of the Finite Element Method with Physics Informed Neural Networks for the Multi-Fluid Flow Problem
Michel Nohra, Steven Dufour
https://arxiv.org/abs/2405.05371

Coupling of the Finite Element Method with Physics Informed Neural Networks for the Multi-Fluid Flow Problem
Multi-fluid flows are found in various industrial processes, including metal injection molding and 3D printing. The accuracy of multi-fluid flow modeling is determined by how well interfaces and capillary forces are represented. In this paper, the multi-fluid flow problem is discretized using a combination of a Physics-Informed Neural Network (PINN) with a finite element discretization. To determine the best PINN formulation, a comparative study is conducted using a manufactured solution. We co…

3D Printing in Microfluidics: Experimental Optimization of Droplet Size and Generation Time through Flow Focusing, Phase, and Geometry Variation
Adam Britel, Giulia Tomagra, Pietro Apr\`a, Veronica Varzi, Sofia Sturari, Nour-hanne Amine, Paolo Olivero, Federico Picollo
https://arxiv.org/abs/2402.17876

3D Printing in Microfluidics: Experimental Optimization of Droplet Size and Generation Time through Flow Focusing, Phase, and Geometry Variation
Droplet-based microfluidics systems have become widely used in recent years thanks to their advantages, varying from the possibility of handling small fluid volumes to directly synthesizing and encapsulating various living forms for biological-related applications. The effectiveness of such systems mainly depends on the ability to control some of these system's parameters, such as produced droplet size and formation time, which represents a challenging task. This work reports an experimental st…

Swarm-Based Trajectory Generation and Optimization for Stress-Aligned 3D Printing
Xavier Guidetti, Efe C. Balta, John Lygeros
https://arxiv.org/abs/2404.10686

Swarm-Based Trajectory Generation and Optimization for Stress-Aligned 3D Printing
In this study, we present a novel swarm-based approach for generating optimized stress-aligned trajectories for 3D printing applications. The method utilizes swarming dynamics to simulate the motion of virtual agents along the stress produced in a loaded part. Agent trajectories are then used as print trajectories. With this approach, the complex global trajectory generation problem is subdivided into a set of sequential and computationally efficient quadratic programs. Through comprehensive ev…

3D Printed Waveguide for Augmented Reality
Dechuan Sun, Gregory Tanyi, Alan Lee, Chris French, Younger Liang, Christina Lim, Ranjith R Unnithan
https://arxiv.org/abs/2403.03652

3D Printed Waveguide for Augmented Reality
Mass production of augmented reality (AR) waveguides has been challenging due to the intricate nature of the fabrication technique and the high precision required for its optical characteristics. In this paper, we have presented a novel and low-cost approach for fabricating geometric optical waveguides designed for AR applications utilizing 3D printing techniques. To strike a balance between optical performance and fabrication feasibility, we have optimized the conventional geometric waveguide …

Manual Supports for 3D Printing
https://poliverso.org/display/0477a01e-71b5c591-0c470c8617bf6e3e
Manual Supports for 3D Printing [MakerSpace] wanted to 3D print an RFID card holder. On one side is a slot for a card and on the other side has recesses…

🌱 Dive into the innovative world of Intelliplant! 🌿 Join us as we explore the collaborative journey behind creating self-watering plant pots powered by Arduino with real-time monitoring capabilities. 🌟 Don't miss this inspiring tale of STEM ingenuity! https://www.socallinuxexpo.org/scale/21x/presentations/mechatronics-sensors-3d-design-and-printing

And there it is. I had this wild idea on Monday, now I have a physical object. I learned Fusion 360 and 3D printing this week. Now I can make furniture. The front of this nightstand is a design made in Illustrator, and it locks into the drawer itself. If you want a different handle, there is a swapping system. The nightstand can be broken down into parts for shipping. Next stop: larger prototypes. #3DPrinting

🔬 Roll-to-roll, high-resolution 3D printing of shape-specific particles
#manufacturing

Roll-to-roll, high-resolution 3D printing of shape-specific particles - Nature
We introduce a scalable, high-resolution, 3D printing technique for the fabrication of shape-specific particles based on roll-to-roll continuous liquid interface production, enabling direct integration within biomedical, analytical and advanced materials applications.

Coupling of the Finite Element Method with Physics Informed Neural Networks for the Multi-Fluid Flow Problem
Michel Nohra, Steven Dufour
https://arxiv.org/abs/2405.05371

Coupling of the Finite Element Method with Physics Informed Neural Networks for the Multi-Fluid Flow Problem
Multi-fluid flows are found in various industrial processes, including metal injection molding and 3D printing. The accuracy of multi-fluid flow modeling is determined by how well interfaces and capillary forces are represented. In this paper, the multi-fluid flow problem is discretized using a combination of a Physics-Informed Neural Network (PINN) with a finite element discretization. To determine the best PINN formulation, a comparative study is conducted using a manufactured solution. We co…

Due to travel and things I hadn’t done any #3dPrinting for two weeks.
Anyone want to guess what I’m doing today?
(Aside from printing too fast and under extruding in the corners 😉)

Still Up and Coming: Non-Planar FDM 3D Printing With 3 or 6 Axes
https://poliverso.org/display/0477a01e-ac699728-2a3989b9a5465f56
Still Up and Coming: Non-Planar FDM 3D Printing With 3 or 6 Axes

3D printing of hierarchical structures made of inorganic silicon-rich glass featuring self-forming nanogratings
Po-Han Huang (Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, Sweden), Shiqian Chen (Division of Electronics and Embedded Systems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Kista, Sweden), Oliver Hartwig (Institute of Physics, EIT 2, Faculty …

3D printing of hierarchical structures made of inorganic silicon-rich glass featuring self-forming nanogratings
Hierarchical structures are abundant in nature, such as in the superhydrophobic surfaces of lotus leaves and the structural coloration of butterfly wings. They consist of ordered features across multiple size scales, and their unique properties have attracted enormous interest in wide-ranging fields, including energy storage, nanofluidics, and nanophotonics. Femtosecond lasers, capable of inducing various material modifications, have shown promise for manufacturing tailored hierarchical structu…

This https://arxiv.org/abs/2306.04784 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

Designing Anthropomorphic Soft Hands through Interaction
Modeling and simulating soft robot hands can aid in design iteration for complex and high degree-of-freedom (DoF) morphologies. This can be further supplemented by iterating on the design based on its performance in real world manipulation tasks. However, iterating in the real world requires an approach that allows us to test new designs quickly at low costs. In this paper, we leverage rapid prototyping of the hand using 3D-printing, and utilize teleoperation to evaluate the hand in real world …

This https://arxiv.org/abs/2401.17709 has been replaced.
link: https://scholar.google.com/scholar?q=a

3DA: Assessing 3D-Printed Electrodes for Measuring Electrodermal Activity
Electrodermal activity (EDA) reflects changes in skin conductance, which are closely tied to human psychophysiological states. For example, EDA sensors can assess stress, cognitive workload, arousal, or other measures tied to the sympathetic nervous system for interactive human-centered applications. Yet, current limitations involve the complex attachment and proper skin contact with EDA sensors. This paper explores the concept of 3D printing electrodes for EDA measurements, integrating sensors…

Solvent-Free Silsesquioxane Self-Welding for 3D Printing Multi-Refractive Index Glass Objects
Piaoran Ye, Zhihan Hong, Douglas A. Loy, Rongguang Liang
https://arxiv.org/abs/2403.14205

Solvent-Free Silsesquioxane Self-Welding for 3D Printing Multi-Refractive Index Glass Objects
The growing interest in 3D printing of silica glass has spurred substantial research efforts. Our prior work utilizing a liquid silica resin (LSR) demonstrated high printing accuracy and resolution. However, the resin's sensitivity to moisture posed limitations, restricting the printing environment. On the other hand, polyhedral oligomeric silsesquioxane (POSS)-based materials offer excellent water stability and sinterless features. Yet, they suffer from relatively high shrinkage due to the pre…

Rapid non-destructive inspection of sub-surface defects in 3D printed alumina through 30 layers with 7 {\mu}m depth resolution
C. Lapre, D. Brouczek, M. Schwentenwein, K. Neuman, N. Benson, C. R. Petersen, O. Bang, N. M. Israelsen
https://arxiv.org/abs/2403.17662

Rapid non-destructive inspection of sub-surface defects in 3D printed alumina through 30 layers with 7 μm depth resolution
The use of additive manufacturing (AM) processes for industrial fabrication has grown rapidly over the last ten years. The most well-known AM technologies are fused deposition modelling and stereolithography techniques. One particular industry where 3D printing is advantageous over traditional fabrication techniques is within ceramic components due to its flexibility. To establish a new and improved level of print quality and reduce resource consumption in the 3D printing ceramics industry, the…

Omnidirectional 3D printing of PEDOT:PSS aerogels with tunable electromechanical performance for unconventional stretchable interconnects and thermoelectrics
Hasan Emre Baysal, Tzu-Yi Yu, Viktor Naenen, Stijn De Smedt, Defne Hiz, Bokai Zhang, Heyi Xia, Isidro Florenciano, Martin Rosenthal, Ruth Cardinaels, Francisco Molina-Lopez
https://

Omnidirectional 3D printing of PEDOT:PSS aerogels with tunable electromechanical performance for unconventional stretchable interconnects and thermoelectrics
The next generation of soft electronics will expand to the third dimension. This will require the integration of mechanically-compliant three-dimensional functional structures with stretchable materials. This study demonstrates omnidirectional direct ink writing (DIW) of Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) aerogels with tunable electrical and mechanical performance, which can be integrated with soft substrates. Several PEDOT:PSS hydrogels were formulated for DIW a…

This https://arxiv.org/abs/2403.17662 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Rapid non-destructive inspection of sub-surface defects in 3D printed alumina through 30 layers with 7 μm depth resolution
The use of additive manufacturing (AM) processes for industrial fabrication has grown rapidly over the last ten years. The most well-known AM technologies are fused deposition modelling and stereolithography techniques. One particular industry where 3D printing is advantageous over traditional fabrication techniques is within ceramic components due to its flexibility. To establish a new and improved level of print quality and reduce resource consumption in the 3D printing ceramics industry, the…

Numerical analysis of a FE/SAV scheme for a Caginalp phase field model with mechanical effects in stereolithography
Xingguang Jin, Kei Fong Lam, Changqing Ye
https://arxiv.org/abs/2403.17434

Numerical analysis of a FE/SAV scheme for a Caginalp phase field model with mechanical effects in stereolithography
In this work we propose a phase field model based on a Caginalp system with mechanical effects to study the underlying physical and chemical processes behind stereolithography, which is an additive manufacturing (3D printing) technique that builds objects in a layer-by-layer fashion by using an ultraviolet laser to solidify liquid polymer resins. Existence of weak solutions is established by demonstrating the convergence of a numerical scheme based on a first order scalar auxiliary variable tem…

The vibe of 3D printing with filaments reminds me of old hard drives defragging. #PC #Windows #Defragment #3DPrinting

Roll-to-roll tomographic volumetric additive manufacturing for continuous production of microstructures on long flexible substrates
Joseph Toombs, Chi Chung Li, Hayden Taylor
https://arxiv.org/abs/2402.10955

Roll-to-roll tomographic volumetric additive manufacturing for continuous production of microstructures on long flexible substrates
Tomographic volumetric additive manufacturing (VAM) has proven viable to 3D-print diverse materials including polymer, glass, ceramic, and hydrogel at the centimeter scale. As tomographic VAM is extended to the microscale, many of its advantages are translatable, including smooth layer-less surfaces, support-free and shear force-free printing, material flexibility, and speed of production. However, as we shrink the patterning scale, the depth of field shrinks much more rapidly and does so rough…

This https://arxiv.org/abs/2402.06283 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Wave optical model for tomographic volumetric additive manufacturing
Tomographic Volumetric Additive Manufacturing (TVAM) allows printing of mesoscopic objects within seconds or minutes. Tomographic patterns are illuminated onto a rotating glass vial which contains a photosensitive resin. Current pattern optimization is based on a ray optical assumption which ultimately leads to limited resolution around $20μ\textrm{m}$ and varying throughout the volume of the 3D object. In this work, we introduce a rigorous wave-based optical amplitude optimization scheme for …