Questions related to 3D Printing
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?
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?
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.
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?
I am doing Stereolithography (SLA) 3D printing using ceramic slurry. I found some slurries could be UV cured, some slurries could not react to UV light. I found that refractive index could impact the curability of the slurry. Is there any equipment that test the refractive index of the slurry?
I am interested in removing defects during metal LPBF like orientation adjustment, residual stresses, cracks, part failure, etc.
As we all know the best particle size for SLM is around 40um.
I was looking for a lab scale machine to produce my needed metal powders and I found ATO Lab Atomizer machine, although the company claims that the output powder of the machine is suitable for SLM but in its catalogue it is mentioned that the particle sizes are between 20 and 120um.
I am curious to know can I use that powder for SLM AD?
and also how many percent of that powder is under 50um?!
they did not share any size distribution graph!
Hello everyone, I tried to export an .stl file of a 3D designed pipe adapter with threads in AutoCad 2022 Software, however, the threads were missing. I tried multiple times but all of my attempts failed. Any idea?
Using ultimaker cura I am using ultimaker CPE transparent for printing . How to optimize for its 3d printing and which type of parts can be made through it.
DICON images will be used in health education, graduation and research projects in human anatomy (male urinary system). DICON images will be converted to 3D print files.
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.
Making Construction Industry as an Automation will reduce labor and Material cost. In 3D printing technology there is only minimum need for Men resource and others will not have jobs to perform.
I have been recently trying to cast and cure Sylgard in 3D printed master molds made of resin but the sylgard doesn't cure. I have tried to cure it at different temperatures but still it doesn't cure.
I wonder if anyone has ever had this problem before and how you could fix it.
What do people think is the most significant part of this research project ? Is it mainly about figuring out a way to print hollow structures with SLA and designed the printing process of a lung ?
I have tried to follow the paper
In brief, the PEGDA was a base matrix, BAPO was the PI, and 1% (w/w) PEDOT:PSS was the conducting filler. The mixture was exposed to UV for photopolymerization.
I have set up three-electrode system,
my polymer, printed from the blended polymers (3 mm diameter), as a working electrode, a platinum counter electrode, and an Ag/AgCl for the reference electrode.
I attached the CVs from my experiments here.
are there any suggestions to get the duck-shaped CV?
Except for the minimising contact between the metal and any sources of atomic hydrogen, what are all the other methods we can adopt while 3D printing (DED methods) stainless steels?
A dentist in our group is interested in doing virtual surgical planning and/or 3D printing based on 3D reconstructions of cone-beam computed tomography (CBCT) data.
I have some samples and I need to do heat treatment on them to release the residual stress after 3d printing and make better the ductility for the tensile test.
I heated them in a vacuum furnace with the 750-degree celsius for 2 hours.
As the container was graphite, we put a thin layer of Zironica powder under them. but the result was awful. as I am not familiar with metallurgy and this process too much, anybody can give me some advice and guidance on why it happened to my samples?
It seems, under the samples that are in the contact with the powder, has the blue color(dark blue), and another area is the yellowish color like gold and it seems, the shape of one of my samples changes because of heating.
this result is strange because the color changed in the vacuum furnace without any gas inside.
The first image is all samples after heating.
The second image is under one of the samples that have close contact with Zironica powder
(The white part is the Zironica powder that remained on the samples)
I'm following the instructions here to create a 3D printable bioink but after i freeze dry my samples, they only partially dissolve in water. I tried heating with a stir bar too and it would still not completely dissolve. In the paper, they describe their Sil-MA composite as a powder after freeze drying but my sample is more similar to a strong Styrofoam. I cannot grind it up with a mortar and pestle and cutting it is very difficult. I've had relative success dissolving it in formic acid but but i think the acidic environment hinders crosslinking so I'd perfer to use water as the solvent instead. Any ideas?
Today, 3D printing is used in many fields. And the idea of using 3D printing to create objects in space is fascinating. But there are microgravity conditions in space. Many conventional 3D printing techniques cannot be used in this situation.
1- Which 3D printing techniques are more suitable for use in space?
2- What points should be considered for the idea of 3D printing in space?
How do you understand, by your experience the areas of application of 3D printing with the use of plastics (biopolymers)? Which areas of practical application are likely to become the fastest and achieve breakthrough value? I mean real industrial applications. I suggest maintenance (spare parts, consumables) as the direction. Machine spare parts can be printed without involving the supply chain. This applies to elastomeric elements, seals, shock absorbers, bearings, etc. The 3D printer can additionally secure the supply of critical spare parts that do not need to be kept in stock and can be restored in a short time.
What other directions of mass use of 3D printing in FDM / FFF technology (polymers) do you see for which research is worth doing?
I use a metal powder as the filler to a thermoplastic polymer matrix. Therefore, I wonder if there are any changes such as the molecular weight distribution, occurring in the structure by adding the filler metal powder?
Hi, I am working with PEGDA (polyethylene glycol diacrylate) for SLA 3D printing. Parts made from 100% PEGDA are transparent after production, while adding increasing amounts of propylene glycol to the pegda solution makes the final part appearing milky-white. Why does that happen? What causes this phenomenon? Please note that the liquid mixture of PEGDA/propylene glycol is also transparent before 3D printing.
I studied journals on SLM (Selective Laser Melting) produced Al12Si components
In that many authors used Solution heat treatment/ annealing.
but for AlSi10Mg they used T6 heat treatment
why can't we use the same T6 for Al12Si?
Your answers help me a lot
Thanks in Advance
Hello all , Thanks in advance for reading my questions.
I purchased 3d printed filaments from these people https://worldoflilliputs.com/product/10-meter-ceramic-trial-pack/
the name they given for material is ceramic ( i am doing research in bioimplants i thought to use it ) but it is polymer. I started searching for literature nothing found , ceramic original composition , orginal 3d printing are poping up instead of this polymer. what sort of keywords need to be used to search for it . I enquired with the suppliers regarding combination of filament , they didnt responded. so I went on to EDX analysis , (I attach those as well) I couldnt able to understand how to think about the materail please do help .
3D printing of high-strength aluminium alloys
In this paper, the authors mentioned using electrostatic assembly technique to coat Al alloy micro powder with ZrH2 nanoparticles. How do they implement this technique? What kind of equipment do they use?
And what is the advantages of this technique compared to mixing particles via ball milling, ultrasonic/magnetic stir, etc.?
I have the file in Pymol for example or as a PDB image . Can someone provide a guideline how this can be converted for 3D printing ? Thanks in advance
I designed and made a rotary atomizer with the help of 3D printing. Now, in order to evaluate its performance, I want to measure the diameter of the produced droplets. According to mathematical calculations and theory, the diameter of the droplets is about 100 microns and I want to measure the diameter experimentally.
Please help me in this way how to experimentally measure the diameter of a drop that is produced continuously.
I want to make polymer composite ink for 3d printing(Extrusion method).
so, I need a polymer matrix that has low melting point(~100 C, low is better)
And also it should have low viscosity for easy mixing with other material.
Is there any polymer candidate you could recommend for me?
Despite the dramatic development in the digital manufacturing technologies in the recent years, 3D printing of earth materials, such as cob, still faces several challenges to be adopted widely on an industrial level, specially when compared to 3D concrete printing. There have been increasing efforts in the recent years to improve the applicability/ feasibility of 3DP earth materials in construction, however, the progress is still slow and scattered. Hence, I am wondering, how do the research community perceive the future of the 3DP of earth-based materials in construction.
In terms of material bio-compatibility with human eye, which material and 3d printing process is suitable for printing a mold at which a cornea is made by collagen and stem cell growth?
I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate. I am asking if there is a specific software that already has the DED process included.
For example, I have found some programs that come automatically equipped with modules/wizards to directly simulate FDM and PBF. However, I was not able to find one the has a module/wizard to directly simulate a DED process.
Any advice would be greatly appreciated!
Advanced Manufacturing-3D printing-paradigm shift -social impacts
I'm trying to make some 3D printed microfluidic chambers on glass slides by using fused deposition modeling and printing directly on the glass. The problem of course is that due to differences in thermal expansion/contraction, the PLA falls off as soon as the glass/PLA interface cools due to thermal stresses. I've tried typical adhesives for printing like hairspray, etc. but these only really give a temporary bond until the material cools.
Are there any sprayable adhesives that could easily bond glass to PLA that I could use in a step by step mask method (printing the inside of the microfluidic chamber, spray the adhesive, remove the inside, print the outside chamber, etc.)?
Is there another way to get this to occur? I thought about poly-l-lysine treated glass as well, but I haven't had a chance to try that yet.
I am working on a project on designing and testing new materials and different structure(3D-infill) configurations as prototypes for the mid-sole of a running shoe.
I was wondering about the functional properties that would be required from the mid-sole of a shoe to optimize its performance.
Any leads regarding mechanical/functional properties of running shoes, midsoles or regarding mechanical testing of midsoles would be very helpful.
Could you recommend some good exemplary papers on the successful adoption and scaling up of emerging technologies (e.g. AI, IOTs, VR, 3D printing etc.) in different organisational contexts? Particularly interested in health services but other contexts as well.
I find many existing approaches - such as social shaping and/or construction of technologies, or TAM etc unsatisfactory, particularly when communicating with practitioners or recommending practical solutions.
i have found lots of books on additive manufactuting but very few lecture notes (ppt) files.
I am doing a 3d printing project as my thesis and have to present the historical background etc. I surely am not looking for copying stuff from other ppt's but seeing different versions will surely give me a broad idea for presentation.
I have also read books about additive manufactring but seeing the most common topics valuable for a presentation would ease my work for the first slides of my work so I can focus more on my real project.
Any lecture notes about 3D printing you could share (which are not available freely available on google search) ?
Many thanks in advance.
I'm searching for someone who has a RIP (Reactive Inkjet Printing) 3D printer. We developed two different inks for this type of printer. We would like to collaborate to create cellular scaffolds from our inks. If you are interested in or know who could be please send me an e-mail on firstname.lastname@example.org
I want to know which is best SLA 3D printing photo polymer resin for preparing nano reinforced polymer composite and is it possible to prepare our own photo polymer resin or not. Please give your valuable suggestions. Thank you.
I'm a new PhD student and I'd like to expand my 3D printing community. My research is around Multi-Material Multi-Material Additive Manufacturing for the creation of turbine blades.
Please comment or follow so I can follow you if your research is around anything 3D printing/additive manufacturing related; hybrid printing, multi-material printing for example. Research around materials science around plastics, ceramics and environmental materials, software and systems around 3D printers and turbine blades also.
I'd be grateful if you could comment or follow so I can follow you and your research.
Thank you very much :)
I have references for SLA and material jetting processes but nothing for SLS or jet-fusion. Any assistance would be appreciated.
One of the most common defects in 3d printing, especially in the FDM process, is the lack of good bonding between printed layers. therefore, to achieve good bonding between layers, what is your suggestion to overcome this problem?