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Squishy 3d print


Free STL file Squishy V1・3D printable model to download・Cults

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Soft and squishy 3D printing 'ink' for flexible objects

(Credit: Shapeways)

Shapeways has unveiled an elastic new material for 3D printing that can be used for projects that are a little more on the flexible side.

We've seen some pretty cool stuff come out of 3D printers; all you have to do is take a stroll around Thingiverse and Shapeways for a range of tchotchkes, homewares, wearable accessories, toys, tools and jewellery — even a robotic hand aiming to cut the cost of prosthetics for children.

Something that all these objects have in common, though, is that they are, well, rigid. However, if we could mix up the flexibility of the plastic materials used in 3D printing, the scope of what can be just made at home would significantly expand.

That's what Shapeways thinks, too. The 3D printing one-stop shop has revealed a new, flexible 3D printing material that it is calling Elasto Plastic (not to be confused with Elastoplast). This strong material is also squishy and flexible, which means it can be used where a more rigid material wouldn't work — one example that Shapeways gave was shoes; another was furniture joints.

We can also see potential for non-slip shower mats, corner protectors, flooring and flexible, translucent screens fixed across a frame, although the volumes required by such projects might be a little prohibitive. At this point, however, the question is rather moot, as Shapeways is not offering the raw material to buyers — yet.

"Elasto Plastic is an experimental material, and although we're very excited about its capabilities, the quality is not ready for broader use," Shapeways said on its website. "So for the time being, Elasto Plastic is offered only as a 'Maker Material' — meaning, anyone can order models they have uploaded themselves, but it will not be sold in Shapeways Shops. "

Strangely, in the way these things sometimes go, almost simultaneously, another company has announced that it will be testing a flexible 3D printing material. Back in February, Belgian 3D printing service Materialise appeared on the catwalk with 3D-printed clothing designed by Iris van Herpen. The company has now announced that it will be offering a similar service to Shapeways to test the material, called "Rubber-like" used in the garment: customers can send their file to Materialise to have an item printed, but not buy the raw material.

"Rubber-like can be used for accessories, haute couture models, designs that need shock absorption, squeezable models, gadgets and functional designs," Materialise said.

Materialise will be offering Rubber-like until 1 September for €2 (AU$2.70) per cubic centimetre, plus €5 (AU$6.70) handling per model. For duplicate models, the handling cost will drop to €3 (AU$4) per model.

Shapeways will be offering Elasto Plastic until 9 July for US$1. 75 (AU$1.80) per cubic centimetre, plus US$1.95 (AU$2) handling per model. After this time, Shapeways will assess pricing and design rules and decide if it can keep Elasto Plastic permanently.

Via www.gizmag.com

Choosing a liquid photopolymer for a 3D printer. Classification of materials for SLA/DLP 3D printing.

Contents:

  1. Introduction
  2. SLA Overview
  3. SLA Standard Resins
    1. Standard photopolymer resin - Standard
    2. Clear Photopolymer Resin - Clear
  4. Engineering photopolymer resins
    1. Rigid photopolymer resin - Tough (like ABS)
    2. Durable photopolymer resin - Durable (PP-like)
    3. Heat resistant photopolymer resin - Heat resistant
    4. Rubber-like photopolymer resin - Rubber-like (Elastic)
    5. Ceramic photopolymer resin - Ceramic filled (Hard)
  5. How to choose the right resin for your application
  6. Dental and medical SLA resins
    1. Medical Device Photopolymer Resin - Custom Medical Appliances (Class I Biocompatibility)
    2. Dental Long Term Biocompatible Resin (Class IIa Biocompatible)
    3. Biocompatibility class I vs biocompatibility class IIa
  7. Cast SLA resins
    1. Cast resin for jewelry making
  8. Generalized rules

Hello everyone, Friends! With you 3DTool!

This article compares photopolymer resins using Formlabs SLA 3D printing products –

Catalog of photopolymer 3D printers

Photopolymers from FormLabs

Detailed review of the Formlabs Form 3 3D printer

Introduction

The stereolithography prints plastic parts with high resolution, good fine detail and smooth surface. Due to the variety of photopolymer resins available for SLA, this technology is used in many different industries: nine0053

  • "Standard" photopolymers are used for prototyping

  • Engineering photopolymers have certain mechanical and thermal properties

  • Dental and medical photopolymers have biocompatibility certificates.

  • Cast photopolymers have a zero ash content after burning. nine0053

SLA 3D Printing Resin Overview

SLA uses a laser to cure a liquid photopolymer resin. This process is called photopolymerization. Various combinations of polymers and other additives that are part of the resin allow you to get different material properties.

The main advantages and limitations that are common to all resins in SLA 3D printing are:

Benefits:

Weaknesses:

Base Resins for SLA

Post-Processing SLA/DLP 3D Printing Article


Standard photopolymer resin - Standard

Standard resins produce parts with high stiffness, detail and a smooth surface. The low cost of resins, from $250 per liter, makes them ideal for prototypes.

The color of the resin also affects its properties. For example, in FormLabs products, gray resin is suitable for models with fine details, and white resin for parts that require the smoothest possible surface. nine0053

Benefits of using Standard grade resins:

Cons Standard:

Also included in the class of "Standard" photopolymer resins from FormLabs is the Color KIT - a set of special dyes and "Color Base" photopolymer resin for mixing and obtaining a variety of color solutions. This eliminates the need for painting parts after 3D printing.

FormLabs Engineering Photopolymer Resins

Engineering resins have a range of properties for injection molded plastics.

All engineering resins require additional UV curing, such as using the Form Cure, to achieve their maximum properties.

Tough photopolymer resin - Tough (ABS equivalent)

Tough resin was developed for models that need to withstand high loads and be durable. nine0053

This material produces strong, shatter-resistant parts and functional prototypes such as snap-on housings.

Pros:

Cons:

Ideal for: functional prototypes, mechanical parts


Durable photopolymer resin - Durable

Durable resin is a wear-resistant and flexible material with mechanical properties similar to polypropylene.

Durable photopolymer produces models with a smooth glossy surface and high resistance to deformation.

Durable Resin is ideal for:

  • Bushings and bearings;
  • Various functional compounds

Pros:

Cons:

  • Not suitable for thin wall parts (recommended minimum wall thickness 1mm)

  • Low heat distortion temperature

  • Low flexural strength (lower than hard resin)

Ideal for: functional prototypes. nine0053


Refractory Photopolymer Resin - Formlabs High Temp Resin

The heat resistant resin is ideal for parts that require high temperature resistance and operate at high temperatures.

Formlabs High Temp Resin provides the highest melting point (HDT): 238°C at 0.45 MPa.

The resin should be used to print detailed, accurate prototypes with high heat resistance. nine0053

Pros:

Cons:

Flexible Resin

Rubber-like resin allows flexible parts to be made. This material has a low tensile strength and high elongation at break and is well suited for parts that will be bent or compressed.

It can also be used to add ergonomic features to multi-material assemblies such as: dies, wearable prototypes, handles, pads and grips. nine0053

Pros:

  • High flexibility (high elongation at break)

  • Low hardness (simulates 80A durometer rubber)

  • High impact resistance

Cons:

  • Doesn't have all the properties of real rubber nine0053

  • Requires extensive support structures

  • Material properties deteriorate over time as the part is exposed to ultraviolet radiation (sunlight)

  • Not suitable for thin wall parts (recommended minimum wall thickness 1mm)

Ideal for flexible prototyping. nine0053

Ceramic photopolymer resin - Rigid Resin

This resin is reinforced with glass, which provides very high rigidity and a polished surface. The polymer is very resistant to deformation and is excellent for 3D printing thin elements.

Ideal for: molds and tooling, jigs, manifolds, retainers, electrical and automotive fixture housings

nine0053

Thermal management components printed with SLA ceramic (hard) resin. Image credit: Formlabs

How to choose the right resin for your application

The table below shows the main mechanical properties of photopolymers for SLA:

Source: Formlabs

Standard resin ( standart ) has high tensile strength but is very brittle (very low elongation at break) so it is not suitable for functional parts. The ability to create a good part surface makes it ideal for visual prototypes and art models. nine0053

Durable ( durable ) resin has the highest impact strength and elongation at break of any other SLA material. Best suited for prototyping parts with moving parts and latches. It lacks, however, the strength of thermoplastic 3D printing materials such as SLA nylon.

tough tough resin is a compromise between the material properties of tough and standard resin. It has a high tensile strength, so it is best suited for rigid parts that require high hardness. nine0053

heat resistant resin ( heat resistant ) can withstand temperatures above 200 o C, but has poor impact strength and is even more brittle than standard resin.

ceramic ( ceramic reinforce ) resin has the highest tensile strength and flexural modulus, but is brittle (poor elongation at break and toughness). This resin is preferred for thin wall parts that require increased rigidity. nine0053

The graphs below compare the mechanical properties of the most common SLA materials visually:

Comparison chart for elongation at break and toughness for common SLA printing specifications and standard media. Image courtesy of Formlabs.

Stress-strain curves for conventional SLA technologies and standard materials. Image credit: Formlabs nine0053

Pros:

Cons:

  • Moderate wear and tear resistance

Ideal for: Surgical aids and appliances

Dental Long Term Biocompatible Resin - Dental Long Term (Class 2A biocompatible)
0114

These resins are specially formulated for long term dental fixtures. Class 2A biocompatible resins can come into contact with the human body for up to a year.

High resistance to breakage and wear make this resin ideal for making rigid cotter pins or retainers.

Pros:

Cons:

  • High price nine0053

Ideal for: durable dental instruments, fracture and wear resistant medical parts, rigid cotter pins, retainers

What is the difference between class 1 and class 2a biocompatibility?

Class 1 biocompatibility rules apply to materials that are allowed to be used for:

  • non-invasive devices that come into contact with intact skin nine0053

  • devices for temporary use or short-term use in the mouth or ear canal or in the nasal cavity

  • reusable surgical instruments

Class 2a biocompatibility rules apply to materials that are allowed to be used for:

  • devices that come into contact with bodily fluids or open wounds nine0053

  • devices used to introduce substances into or remove substances from the human body

  • invasive short-term devices such as invasive surgical items

  • long-term implantable devices placed in the teeth

Photopolymer resins in SLA 3D printing for jewelers


Jewelry resins

This material allows you to print models with fine details and a smooth surface without leaving ash or residue after burning.

Cast resin allows you to get the finished product directly from design to precision casting with just one 3D printed part. It is suitable for making jewelry and other small and complex components.

nine0113 Pros:

Cons:

Ideal for: investment casting, jewelry making

    SLA/DLP 3D printer catalog

    Photopolymers from FormLabs

    Post-Processing SLA/DLP 3D Printing Article

    Well, that's all we have! We hope this article was useful for you! nine0053

    You can order Formlabs SLA 3D printers or ask your questions and find out the status of your order, you can

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    new advances in surgical simulation

    Implementation stories

    Medicine

    Author: Aleksey Chekhovich

    Author: Aleksey Chekhovich

    High-precision models for training specialists in the field of surgery | Comments of hospital surgeons | Sharebot 3D printers are reliable tools for innovation

    Undoubtedly, 3D printing is one of the most advanced technologies of our era and, probably, in a few decades, these years will be remembered as the period of its formation. This is one of the most promising and revolutionary technologies that is used in various fields, in particular, in healthcare. Therefore, it is worth clarifying a few questions. For example, how can 3D printers contribute to the development of medicine and healthcare in general? nine0053

    A good example is the unique project of the General Surgery Department of the Sacra Famiglia Fatebenefratelli Hospital in Erba (Lombardy, Italy), where, using the Sharebot 3D printer, it was possible to recreate real anatomical organs and structures to simulate basic surgical interventions, such as video laparoscopic cholecystectomy.

    Meet sharebot.ru : all about innovative 3D solutions to optimize your business. Catalog of 3D printers based on the most popular additive technologies, tasks and applications, success stories, promotions, videos and other useful materials! nine0056

    Liver and gallbladder segment models printed on a Sharebot 43 FDM printer

    In collaboration with Sharebot, an experimental model of a segment of the liver and gallbladder was created using a special material (LAY-FOMM) produced in the form of a plastic thread. After immersion in water, this material, thanks to its two-component composition (rubber and PVA-based soluble part), becomes similar to organic tissues, which also allows surgical sutures to be applied. It was found that the degree of extensibility in combination with residual moisture after immersion in water is similar to organic counterparts. nine0053

    iQB Technologies experts recommend the article: Additive technologies in medicine: how to reduce risks to patients' health

    Is your healthcare facility interested in implementing 3D technologies? Order free test services 3D printing and 3D scanning!

    Leave a request

    High-precision models for surgical training

    Thus, the surgeons of the hospital were able to reproduce the video laparoscopic cholecystectomy directly on the printed models. In practice, this involves removing the gallbladder without damaging the liver tissue. Performing surgery on a model pelvis (laparoscopic simulator) allows surgeons to master the correct technique, as well as experiment with new non-invasive methods of removal. nine0053

    Pelvic Surgery Simulator

    By simulating important surgeries on high-precision 3D-printed anatomical models, it has been possible to make a big step in the field of medical technology, which undoubtedly increases the chances of patients recovering with similar interventions.

    We are interested in 3D printing in terms of practical training of a new generation of surgeons based on more advanced and accurate models. nine0052

    Specialists of the General Surgery Department of the Sacra Famiglia Fatebenefratelli Hospital

    Comments of the surgeons of the hospital

    The peculiarity of the model developed by us is that there are two holes between the liver and the gallbladder, which make it possible to completely empty the gallbladder in order to then fill it with a colored liquid to simulate bile. Due to its elasticity, the liver is also used to develop the technical possibilities of applying laparoscopic and traditional sutures. nine0053

    In each model, the liver and gallbladder are directly connected by supporting structures. Using a raft (a horizontal mesh of plastic located at the base of the model) and supports, we developed a model of the gallbladder, in which they, simulating the liver bed, allow us to model the plane of the liver section. This model includes only the gallbladder and saves consumables, which speeds up the 3D printing process.

    Anatomical base with liver made of PLA plastic nine0053

    We also reduced the space between the support and the gallbladder to make the area between them more complex and realistic. For more efficient placement inside the pelvis model (laparoscopic simulator), we created an anatomical base with a liver made of PLA plastic. It contains a soft sponge that mimics a real liver, into which a component of a 3D model of the gallbladder made of LAY-FOMM, an easy-to-use filament, has been inserted through the valve. This rigid model allows quick and easy replacement of LAY-FOMM gallbladder models. nine0053

    Finally, we created an ellipsoidal cylindrical model with a vertical hole, which makes it possible to simulate intestinal sutures and anastomoses. 3D printing of this model does not require much time and money.

    Models for testing intestinal sutures

    We believe that this technology opens up diverse and broad possibilities. We intend to create models of other organs for high-precision simulation of a number of important surgical interventions. To do this, we need to learn how to perform 3D printing based on DICOM files in particularly complex or atypical cases sometimes encountered in clinical practice. In general, 3D printing with LAY-FOMM interested us in terms of technical perspectives and, most importantly, the practical training of a new generation of surgeons based on more advanced and accurate models. nine0053

    Specialists of the Department of General Surgery

    iQB Technologies Experts Recommend Article: 3D Printed Prostheses Transform Patients' Lives

    Sharebot 3D Printers - Reliable Tools for Innovation

    Fatebfratelli hospital staff use a Sharebot 43 compact professional 3D printer equipped with two autonomous extruders. The device allows you to print products of the most complex geometry with soluble supports. In addition, a system of mirroring and duplication is available when printing. The flexible printer platform maintains a temperature of 120°C, and the maximum heating temperature of the extruders reaches 300°C, which allows the use of technical and professional materials that meet a wide variety of physical, chemical and mechanical conditions, including high or low temperature, the presence of oil and gasoline, as well as impact and friction. nine0053

    Printing process on Sharebot 43

    The collaboration between Sharebot and the Department of General Surgery at the Fatebenefratelli Hospital in Erba has demonstrated the importance of introducing 3D printing, which opens up the possibility of creating new types of models and high-precision surgical simulators. This area is just one of the possible directions for the development of technology. Whether it's recreating organs for experimentation or printing implantable prostheses, 3D technology is becoming a key tool for medical innovation.

    Learn more