Questions related to 3D Printing
I read an article recently that combined TPU with PLA and achieved good mechanical properties that I also needed for my project, but the problem was that this combination could not be printed with SLA or PLD 3D printing. Now I am looking to combine a hard and soft polymer like these two materials and be able to print it with the SLA method. Can you give me some advice on what materials I can use?
The article DOI: https://doi.org/10.1016/j.msec.2013.07.037
What kind of material is Tera Harz TC-80DP for maxillofacial surgery? What is its composition? Where can I view SEM images of this material? Thank you!
We recently 3D printed (SLM) hypereutectic (high Si)% Al-Si-alloys and chemically removed the Al afterwards (via HCl (aq)) in order do get a porous structure, which worked quite well.
1.) I was wondering about the maximum Si content with which one could work/print. From the phase diagram I only see the issue, that the freezing ranges increases with higher Si content, which could lead to more cracking. But in a book it was mentioned, that alloys "made by powder metallurgy may go as high as 40-50% Si" - is this just regarding the practical usage or is there some kind of limit I am not seeing?
2.) Does anyone have an educated guess about the parting limit during dealloying for such a hypereutectic alloy? I only found some limit for systems like AuAg, which show perfect solubility. Would the parting limit be higher or lower in a hypereutectic alloy - any ideas?
"Artificial intelligence may automatically be able to turn theories into marketable products"(Ohnemus 2023).
A new branch of applied mathematics will emerge concerning designing prior to 3D printing. The categories of scholar and entrepreneur may soon begin to overlap more. The more advanced 3D printers become, the faster a concept can go to a finished product.
The file contains CEM images of a 3D dental resin (it is amorphous). Is it possible to determine by structure (there are impurities) and elements (Na, Cl, Al - impurities) what kind of polymer or at least to which group it belongs and its applicability? What works have such images? What works describe the relationship between structure and elemental composition and applicability of such materials? What works describe other properties of such materials? Thank you!
I use a DWS System's DS3000, a photosensitive monomer to disperse the nanoparticles in it and use the solution for SLA printing. But, because of its high viscosity, I cannot increase the particle concentration, which is my goal.
I am currently working on a research project for developing a novel additive manufacturing system that uses selective laser melting (SLM) coupled with Fourier Transform Infrared (FTIR) spectroscopy for material characterization of lunar regolith as feedstock for 3D printing infrastructure on the lunar surface. Any data regarding how the system could be developed and integrated would be greatly appreciated.
We need a filament-making machine facility situated in India, particularly if it is in the state of Maharashtra. We have 3 kgs of raw material and want the filament for the UG R&D project. If anybody is aware of such a facility kindly inform us. We are ready to pay as well.
Why is it that when I search for literature on 3D printing bone scaffolds using materials like PLA, I seem to find more studies using FDM rather than SLA?
And I have another related question:
I came across a literature where it mentioned, 'SLA has high precision and can produce small-volume objects; however, only a single material can be used and thus post-processing and support structures are required, and toxicity cannot be overcome.' I'm having trouble understanding what is meant by 'toxicity' in this context.
Sorry I'm just starting to read literature in this field, and I have so many questions.
If anyone could help me to answer this question, I would deeply appreciate it. I am looking to produce 500um beads. Currently, I have been using the drop based method which means I have been forcing the liquid alginate through a syringe into a bath of calcium chloride. However, I want to better standardise the size and shape of the alginate microbeads.
I have come across quite a few papers using a combinations of hydrogels but not alginate alone and I wanted to know if anyone else knows if you can produce alginate hydrogels of the right size using SLM or 3D printing.
Any links or help would be deeply appreciated.
Now, we are doing a research on Binders for different materials in Binder jet 3D printing. And then we have chosen Copper alloy material for that what is good binding material to achieve good density and mechanical properties.
Thank you in advance!
I am currently conducting a study on 3D printing of kappa carrageenan and we encounter problems related to liquid swelling that causes the shrinking of hydrogels over time that decreases the desired thickness e.g. hydrogel of 1.0cm thick is decreased to 0.7cm due to swelling. What other materials/techniques shall we apply? Thanks!
Hello all, I'm working on a project about 3D printing ceramics. I'm trying to reproduce the high solid loading alumina slurry (>= 60vol%) used in a paper but cannot get it work. The recipe I used is from the following:
The paste was composed of alumina powder, deionized water, ammonium polymethacrylate (DARVAN® C-N, Vanderbilt Minerals, Norwalk, CT, USA), and methylcellulose (Methocel J5MS, Dow Chemical Company, Midland, MI, USA). For parts which were intended to be freeze dried (as will be discussed in section 2.6.1), 20 wt% glycerol was used as suggested by Sofie and Dogan  to prevent the growth of large ice crystals and freezing defects associated with water crystallization. The alumina powder was dispersed in water using 0.94 g Darvan C per 100 g of powder, and then ball-milled for ~15 hours to break up agglomerates and to produce a uniform mixture. (Ghazanfari et al, 2017. DOI: 10.1016/j.addma.2017.04.001)
I'm using the same alumina powder (A16SG) and ammonium polymethacrylate (Darvan C-N) as from the paper. Calculated from the recipe, the composition of my slurry is 71.10g of alumina, 0.63g of Darvan C-N, and 11.44g of DI water for a 30mL slurry. Ball-milled 18+ hours with 20 zirconia balls at approximately 60 RPM in a plastic jar with 3" diameter. The slurry comes out from the ballmill is not a uniform mixture, with some amount of solid chunck and highly viscous. Attached is a photo of the "slurry" after ball-milling.
Anyone have an idea what would be the potential issue? And what is the highest solid loading ever achieved for alumina in research? Thanks.
Whether the colour of the 3D printing filament affects the mechanical strength.
If affected, which one of the colours has a higher strength?
For my research purpose I need a Composite 3D printing filament.
Please share the cost details to manufacture a 1Kg filament using a twin screw extruder.
And share the combination of filament already fabricated using a twin screw extruder.
And Share the detail of twin screw extruder availability in India. My location is Vellore, Tamilnadu, India. Please share the nearest availability of twin screw extruder.
I have been trying to save a voxelprint grasshopper .gh file as .inp file to export it to Abaqus cae for 3D printing process simulation, but iwas unable and i couldn't find any tutorial anywhere for the issue, please anyone for help? @Gieljan Vantyghem @Ticho Ooms @Wouter De Corte
I am verymuch intreasted in doing research in the field of the Additive Manufacturing technology with 3D printing process. Because of that i would like to know about the clear details of the present updates and future trends in the field of the Additive Manufactuirng.
I am egarly wait and intreaated for the collobirative research work in the field of Additive Manufactuirng with 3D printing process.
What are all the materials available for FDM type 3D printing. And Please share the Strength, Energy absorption characteristics of each material by comparing.
3D printers use various polymer materials and metals. PLA, ABS, TPU, PETG, Peek, Ultem, nylon, Polyamide12, SS316, Ti-6Al-4V, Alsi10mg are some of the 3D printing materials. I need to know the Energy Absorption, Specific energy absorption, Strength, Stiffness of those materials.
Please help me to find the same.
I am currently doing my dissertation on 3d printing using alumina oxide and I decided to choose gears. However, I am stuck because I feel like I might have a solution to the wear and tear problems that metal gears go through which causes failure. But I realize I do not have a story. Which machine, industry or application do I want to test this gear? I want to talk to anyone who is currently researching in this area or has any idea about this area.
Hello, currently I am doing my master thesis on simulation based optimization of 3d printed molds for platics molding injection. Is there any Journal or helpful books acording to optimization of process Parameter or geometry of molds ?
Thanks in advance
I'm looking for a lab-scale twin-screw extruder for my lab.
My primary use is extruding thermoplastics and polymer composites as filaments for 3d printing via FDM printers.
For that, I need a twin-screw extruder.
I would more than appreciate your recommendations for an extruder.
Myself Nekin Joshua R. I like to do my research in Biomimic structures like Nacre, Auxetic, Conch Shell, Hexagonal cellular structure, Hourglass structure, Bouligand Structure.
And 3D print the structures in FDM and like to test the mechanical properties, Ballistic performance, Impact test.
I need to select any one bimimic structure and need to analyze. Please help me to identify which one structure has more energy absorbing property and Armor applications.
Please tell me which one structure I can select.
I am working on 3D printing with PEGDA.
I have been using Mn 700 PEGDA, but think that Mn 250 PEGDA would be more suitable for this application. The problem is that I found out that Mn 250 PEGDA is insoluble in water, which is a problem since the photoinitiator I am using is only soluble in water. When we added the photoinitator to only Mn 250 PEGDA, it did not dissolve enough to print. Most of the literature I found in the same area uses Mn 250 PEGDA, but they use a different photoinitator. We cannot change our photoinitator, so I am wondering if there is any way to make Mn 250 PEGDA more soluble in water. Possibly using a cosolvent?
I would like to 3D print models of protein molecules, and am thinking of buying a 3d printer. My question is – which technology would be better for such prints: FDM or SLA? To be more precise, I’m deciding between Creality Ender 3 v2 neo and Anycubic photon m3
From what I have read, SLA is generally better for complex models. However, protein molecules are ribbons with complex geometries, and a lot of overhangs. Therefore, they need a lot of supports. While generally removing SLA supports is easier (am I right?), resin is much more brittle, therefore it would be a real challenge to remove all supports without breaking the model, especially since SLA prints are usually smaller in size. So I feel inclined to buy an FDM printer.
Would be grateful for some advice
I want to compare a monolithic polymer composite sample and a 3D-printed polymer composite sample. However, I need some references for this matter. Any contribution would be appreciated, kindly.
In Fused Deposition Method (FDM), coatings are needed to bind with textiles materials and having used PLA polymer or PMMA polymer for 3D printing of and onto textiles for the most recent trend. In that case, anyone can suggest some natural polymer for these printing of textiles materials (any composition are required).
Some time ago me and my colleagues have published paper on lunar concrete made with the regolith simulant and low w/c ratio - the tests concerned the influence of regolith on the consistence of the mix (
Can you recommend papers on concrete 3d printing that might be helpful?
I hope you are doing well!
I am currently doing research in the field of additive manufacturing with technical ceramics, and I have two separate questions specifically regarding silicon dioxide (SiO2).
1. In 3D printing with SiO2, I use a slurry mixture which is composed of SiO2 powder, deionized water, DARVAN C-N (for dispersant) and CELLOSIZE Texture F4M (for binder). The CELLOSIZE Texture F4M is cold-water dispersible hydroxypropyl methylcellulose which is primarily used to control viscosity within the slurry. My main issue is when I add the binder into my SiO2 slurry and mix it, the slurry almost becomes a non-Newtonian liquid within 20 seconds, in that sudden impact hardens the overall slurry and after the impact it immediately goes back to a viscous state. Could you please point me to any research regarding this issue? Additionally, I've tried the same binder on alumina and silicon carbide (other technical ceramics) and haven't faced this issue. I've also experimented with modifying different speeds of mixing, gradual increments of adding the binder, and mixing in a vacuum environment; however, none of these helped. Could it be that methylcellulose reacts chemically with SiO2, and a different binder should be used?
2. For sintering ceramics, I've read that ~80% of the melting temperature is a good baseline for experimentation. My goal is to increase part density and flexural strength. Could you please point me to any research regarding selecting a sintering schedule (time and temperature) for silica specifically? I've read through literature suggesting ~1300C for around 8 hours with a heating rate of 5C/min; however, I'm curious if a lower temperature such as 900C for a longer sintering time or a higher temperature of 1500C for a shorter sintering time would vary the final part density and flexural strength significantly. I'm currently only experimenting with single-stage sintering.
I appreciate all your help and insight.
Thanks & Regards,
I saw literature that frontal polymerization can be used in 3D printing of composites. The curing can be triggered briefly by external heat source, and the thermal front wave can travel from the external heat source side to convert monomer to polymer. How to control the heat rate in composites curing?
I am trying to generate an algorithm that can roughly estimate the support's volume of an stl file at a specific orientation. Does anyone have any ideas where and how to start? I am trying to do this in Python but based on what I read, this can be a GPU computational and geometrical design problem. So I am not sure if Python is a good place to start. I appreciate any ideas/responses. Thank you.
Related material: https://www.sciencedirect.com/science/article/abs/pii/S0097849315000564
Hi I'm looking for co-authors to write a chapter of a book. In particular, the topic is “3D printing techniques and use in the Biotechnology laboratory“ maximum 20 pages.
I deal with direct communication with the publisher and with the revision of the chapter.
The deadline is for 22th November and the total cost is 350 GBP.
My direct contact is email@example.com
I try to 3D print a plate with the FDM technique using graphene infused PLA filament. The dimensions are as follows: Length × Breadth × Thickness = 5 × 5 × 2.5. Part fill style is in triangle, maintaining the bed temperature and melting temperature as 90°C and 180°C respectively (as recommended by the manufacturer). However, the plate isn't as precise as expected, which is a form of slightly curvy, (termed warping).
I kindly look after valuable suggestions from the 3D printing experts in helping me solving out this issue.
Greetings, I have conductive graphene PLA filament for 3D printing. Before approaching printing, I need to conduct a TGA analysis of the material, for which the material only in powder form is feasible. How may I convert the available filament into powder form? Kindly help me provide your valuable solution.
I need to create TPU/3wt% CNT filament for 3D printing. With my current filament, I am unable to print, the extruder is moving but nothing is coming out from the nozzle.
Facing trouble (bonding-leakage) while using hand-pressure to pass liquid through my microfluidics device. I used UVO-cleaning instead of plasma-bonding (PB not available).
The way I cleaned the glass slide before UVO step: H2SO4 (70%) Overnight> dH2O > Soak with Methanol (~100%) > IPA (~100) > also add Acetone (~100) sometimes > UVO-treatment.
Microfluidics Channel precision = 20 um
Glass slide = Microscope cover slip 25*45mm
Please let me know if you need more clarification.
Thank you for your suggestion.
I am trying to simulate a laser path to understand various mechanical effects because of using a DED to build a cube of 15mm*15mm*15mm in ANSYS workbench using DED Process extension(attached) for Tungsten.
The extension enables Transient thermal followed by static structural, although I am not sure how to set up the process. I could not find any leads on the ansys on the setup unlike for the moving heat source (many sources available)... I was wondering if anyone can share how to enable the process.
I am trying to create a 0.1mm thick PDMS layer on a 3D printed mold (made from photopolymer resin of B9 creator). Although the PDMS layer is curing, I am finding it difficult to peel the thin layer. I apply a release spray on the surface of the mold before proceeding with spincoating the PDMS layer. What methods can be done in order to obtain such thin thicknesses? What release agents can be used or reagents that can help in the liftoff process of the PDMS layer?
Hello, I want to know how can SLA, DLP or other vat photopolymerization methods achieve multi-material printing capability? Can they print multiple materials in different regions at the same time?
I'm looking to develop a DoE using an I Optimal design for 3D printing process parameters. However, I'm looking at two Run parameters (I'm using the Design Expert software): "Lack-of-fit points" and "Replicate points".
By default, they both have a value of 5. But from my understanding, the "Replicate points" is a parameter that affects the optimality the more the points are replicated while "Lack-of-fit points" affects the relationship between the input factors and the responses.
Now, by increasing either by a factor of 1, the total runs of course increases also by a factor of 1.
However, in terms of the significance and other points that are generated during the Analytical stage, has there been any works that discuss the importance of these factors on the accuracy behind an I-Optimal DoE in the end? Surely, you wouldn't want to increase the points by a large amount, otherwise you might as well do a Full Factorial, haha!
Of course, I do understand that this question is indeed quite open ended because the outcome of what I'm asking hugely depends on the type of research being conducted.
Any info and advice would be greatly appreciated!
Creating orthoses through 3D scanning and 3D printing, aiming to facilitate the integration of health professionals.
I'm conducting research on 3D printing concrete mix design. I have studied several papers related to this issue but I couldn't find any information about the role of the wooden part (shown in the attached photo) in the concrete printing process. I would be grateful if anyone can give some information about this issue.
I am trying to model the process stage (Gate to Gate) of FDM on SimaPro. I understand that I need to decide upon my inputs and outputs as well as system boundary before doing that. I am trying to do this properly and was wondering if anyone can advise more on this methodology (i.e., how to decide upon the values for the raw material input and electricity?, etc...).
Any response is very much appreciated. Thank you.
Useful Article: Methodology for systematic analysis and improvement of manufacturing unit process life-cycle inventory (UPLCI) —CO2PE! initiative (cooperative effort on process emissions in manufacturing). Part 1: Methodology description.
I am looking for a device to apply a controlled force on soft hydrogels (a few kPa) in solution while imaging with an inverted microscope. Preferably something that has been documented in the literature and can be reproduced using e.g., 3d printing?... I could not find anything like this, mainly stretchers which allow for the application of a controlled strain but not a controlled force.
Ideally the material should appear in the filed of view without being disturbed by the device - perhaps something like a tensile tester?
Thank you in advance!
I have done a dynamic test on elastomer Agulus materials used for 3D printing to investigate the mechanical properties of this material, for instance, Storage and loss modulus, but the result is showing that the loss modulus is higher than the storage modulus, is this possible?
I attached both graphs, with the green coler being Loss modulus while the red is storage modulus.
There are several tools to simulate 3D printing of metallic parts, but I wonder if there is any reliable molding tool to simulate 3D printing process of plastics.
While doing heat treatment to SLM parts, Do we need to perform heat treatment along with the build plate or after removing parts (using wire cut EDM) from the build plate?
My main concern is to study the effect of heat treatment on mechanical properties and residual stresses
Can anyone explain this? (It will be helpful to my work if you provide an answer with the journal also)
Metal AM/3D Printing processes have seen massive R&D efforts over the last few years, which have helped improve the indsutrialisation efforts of AM processes. I would be very interested to hear everyone's thoughts on what the topics are, that need to be investigated and developed over the next 5 years by those in research.
Hi all, i would like to know what are some of the key considerations one has when it comes to purchasing metal powders for printing? Price point is definitely a consideration, how about quality? or even availability of powder sizes or availability of small batch like (10kg?) is that a challenge in purchase of powders? any other challenges when you face when it comes to purchasing metal powders?
Our last article - The Influence of Gravity on 3D Printing with the FFF/FDM Technique - Reverse FDM/FFF 3D Printing #flashforge Feel free to discuss under the article. What new possibilities do you see when using reverse printing? heat convection change, another way of bonding layers? faster printing? I am curious about your opinion. Often, simple questions do not have obvious answers and require an experiment that yields an unexpected answer. Have you ever wondered what will happen if you turn 180 degrees to the commonly accepted FDM printing convention? The paper presents the verification of the possibility of using the reverse orientation of the print head in traditionally used 3D printers of FFF/FDM systems. It has been shown that the mechanical parameters of the printed object can be even higher when reverse printing is used. The presented concept opens up new possibilities of designing printers in FFF/FDM systems, which use changed heat convection and the reverse effect of gravity on the printed object. This work was carried out using the TRIZ methodology.
Could you provide a selection principle of resin species in order to increase cured depth for DLP ceramic slurrry? For example, the ratio of HDDA and PEGDA or any other resins.
Hello, I am doing research in ceramic 3D printing using stereolithography (SLA) method. I was wondering if there is any feature of photopolymer resin that make it not able or not safe to go through firing /sintering process. Thanks!
If you are researcher who is studying or already published on Industry 4.0 or digital transformation topic, what is your hottest issue in this field?
Your answers will guide us in linking the perceptions of experts with bibliometric analysis results.
Thanks in advance for your contribution.
I am looking to 3D print a double network hydrogel (PAMPS/PDMAAm). I am having trouble calculating the quantities I require to 3D print an approximate 27cm3 volume of the model.
For the first network, Monomer = AMPS (1 mol/L); Cross linker = MBAA (4 mol%); UV light initiator = 2-oxoglutaric acid (0.1 mol%)
For the second network, Monomer = DMAAm (2 mol/L); MBAA (0.01 mol%); UV light initiator = 2 oxoglutaric acid (0.03 mol%)
Could you please guide me in the process to calculate the amount of monomer, crosslinker and initiator required for the experiment?