Resin Vs Filament-Based 3D Printing: A Complete Guide
Two main approaches have developed in the dynamic field of 3D printing technology: filament 3D printing and resin 3D printing. Each approach that strives to meet the varied demands of different sectors, has its own set of strengths and weaknesses. Our in-depth analysis of these two methods covers all the bases, from their inner workings and uses to the considerations that should go into making a final decision.
3D Printing with Resin: What Is It?
A number of variants fall under the umbrella term "vat polymerization" when discussing resin 3D printing; these include Stereolithography (SLA), Digital Light Processing (DLP), Liquid Crystal Display (LCD), and Masked Stereolithography (MSLA). Differentiating these technologies is the light source or engine used to cure the liquid resin, which is the basis material for all of them.
By strategically directing a laser beam through mirrors, stereolithography (SLA) builds an object layer by layer by solidifying liquid resin. Although SLA is known for its precision, it is often slower than other resin technologies. In contrast, Digital Light Processing (DLP) uses a series of small mirrors to simultaneously harden a complete layer with a burst of light. This approach may lose some granularity, but it's quicker.
Multi-slice Masked Stereolithography (MSLA) or Liquid Crystal Display (LCD) 3D printing shows a single layer slice on the build plate by shining ultraviolet light from LEDs through an LCD screen. The pixel density determines the print quality of an LCD printer. A greater pixel count results in better print quality.
For example, Carbon utilizes Digital Light Synthesis (DLS) and Origin by Stratasys uses Programmable Photopolymerization (P³), two unique versions of vat polymerization that manufacturers frequently develop. You may use resin 3D printing to make metal and ceramic components in addition to plastic ones.
The Most Valuable Advantages of Resin 3D Printing
The capacity of resin 3D printing to create prints with a smooth surface and precise details is what makes it stand out. The layer lines and fine detail in resin prints are far less noticeable than in Filament 3D printing (FDM). Although the decision between resin and FDM is machine-dependent, resin printers are usually better at producing high-resolution prints.
Resin printers, such as the Elegoo Saturn 3, provide hobbyists with a cheap option for printing miniatures, toys, or sculptures with precise details. Resin printers, like the Asiga Pro2, help dentists who use 3D printing to create dental models that are unique to each patient.
When designing delicate jewelry, resin 3D printers are a lifesaver for producing the tiny details. One well-liked option in this field is the Formlabs Form 3+, which works with a wide range of castable wax resin materials. The 3D Systems SLA 750 Dual is only one example of an industrial resin 3D printer that can consistently produce high-quality, end-use automotive parts at a rapid pace.
Fast printing, high throughput, the capacity to produce lattice structures, precise detail, smooth surfaces, material variety, and resin 3D printing are some of the main features. Industries that place a premium on aesthetics and precision often choose it because of these qualities.
What is Filament 3D Printing?
Utilizing a continuous filament of thermoplastic material to construct three-dimensional things layer by layer, filament 3D printing, sometimes called Fused Deposition Modelling (FDM), is among the most popular 3D printing technologies. This approach has become standard practice in many fields and among enthusiasts due to its adaptability and ease of use. Delving into the intricacies of filament 3D printing, we examine its mechanisms, advantages, cost considerations, and comparisons with resin 3D printing in this complete study.
How Does Filament 3D Printing Work?
A heated extruder nozzle is the central component of filament 3D printing, which entails feeding a continuous plastic filament from a spool. An extruder melts plastic filament, which might be nylon, Acrylonitrile Butadiene Styrene (ABS), Polylactic Acid (PLA), Polyethylene Terephthalate Glycol (PETG), or another substance. The last step in creating a three-dimensional object is pouring molten material into a build plate in a certain pattern.
Using exact motions, the nozzle moves along the X, Y, and Z axes, carefully layering the molten material. This process allows the printer to build the object layer by layer by lowering the build plate incrementally.
Advantages of Filament 3D Printing
One reason filament 3D printing has become so popular is because of all the benefits it provides:
Flexibility: FDM printers are compatible with a wide range of thermoplastic materials, allowing users to choose the ideal material for each project by considering its unique features.
Availability: FDM printers are great for both serious makers and casual enthusiasts because of how easy they are to use. The technology is easily accessible because of its simplicity and because open-source software is readily available.
Build Volume: FDM technology is adaptable to projects with variable size needs because it can produce huge things depending on the printer's size.
Similarities Between Filament 3D Printing and Resin 3D Printing
1. Resistance to mechanical stress and long-term durability are hallmarks of FDM-printed products. Prints made with filament printing are stronger because of materials like ABS and PETG.
2. 3D printing with resin and filament follow the additive manufacturing principle, which is different from subtractive manufacturing in that it builds objects by adding material layers upon layers.
3. Both methods use CAD (Computer-Aided Design) software to generate digital three-dimensional models. The 3D printer works by first slicing the digitized models into layers.
4. Users must get their 3D models ready for printing, regardless if they are using resin or filament. Part of this process includes utilizing specialized software to orient the model, create support structures, and slice the model into layers.
5. Users are able to make virtual design revisions before committing to a physical print in both processes, thanks to the digital workflow.
6. Even when printing is complete, resin and filament prints could still necessitate some sort of post-processing. In order to attain the desired surface quality, it may be necessary to remove support structures and use finishing techniques such as sanding.
7. Rapid prototyping often makes use of 3D printing with resin and filament. Quickly testing and iterating on designs before committing to larger-scale production is an option for engineers, designers, and hobbyists.
8. During printing, users of both technologies can adjust the layer height. This setting determines how fine the print will be in terms of resolution and surface finish.
Filament 3D Printing vs. Resin 3D Printing
1. Cost Considerations
When deciding between 3D printing with filament and resin, price is a major consideration. For a number of reasons, filament 3D printing tends to be less expensive than resin 3D printing. On most occasions, the specialized liquid photopolymers needed for resin printing are more expensive than the reels of filament. For instance, resin can cost anywhere from $15 to $80 for 500 ml to 1 liter, whereas a 1 kg spool of PLA or ABS filament usually costs about $20.
Resin printing comes with its fair share of extra costs, such as resin tank replacement, print cleaning with isopropyl alcohol, safety gear, and a UV curing lamp. Over time, these expenses might add up, driving up the cost of resin printing. The initial investment for resin printers is typically larger compared to filament printers, which tend to have a smaller price tag. There is a wide range of prices for filament printers, including more affordable ones that are perfect for beginners.
2. Strength and Surface Finish
In comparison to the standard resins used in resin 3D printing, filament prints tend to last longer. Common FDM printing materials with high tensile strengths and impact resistance include ABS, PETG, and nylon. The strong resins employed in resin printing, on the other hand, can match or even outperform the strength of some filament materials.
Smoother surfaces with high detail and resolution are renowned results of resin 3D printers. Prints with barely perceptible layer lines are the consequence of the light-curing process of liquid photopolymer. Filament printers, on the other hand, build models layer by layer by extruding melted plastic, which may result in a slightly less smooth surface.
3. Speed
The technology, settings, materials, and build height are just a few of the variables that might affect how fast 3D printing is. When compared to other resin printing technologies, including Stereolithography (SLA), Fused Deposition Modelling (FDM) printers usually provide higher printing speeds. Quicker layer deposition is possible because of the continuous extrusion of molten filament.
Because the lasers only cover a tiny fraction of the surface area, SLA resin printing—which involves selectively solidifying layers of liquid resin—may take more time than expected. Resin printing using a projector or LCD, on the other hand, has the potential to cure multiple layers simultaneously, leading to faster printing times.
Before deciding between resin and filament 3D printing, it's important to consider the exact requirements and use case at hand, not just how fast the printer can print.
Which is the Best 3D Printing Software?
There are a lot of 3D printing software available, but we recommend using SelfCAD. SelfCAD is a 3D design software that comes with all the necessary tools that you will need to create your 3D models and even prepare them for 3D printing without the need for additional software. It comes with various 3D modeling tools for creating 3D models from scratch, like freehand drawing and sketching, image to 3D model, and even powerful 3D sculpting tools useful for creating organic designs. The video below shows the general overview of SelfCAD.
In addition to 3D modeling tools, SelfCAD comes with 3D printing tools like the magic fix that is useful for fixing any non manifold errors in your designs before sending them for 3D printing. Get to know how this tool works in the video below.
SelfCAD also comes with its own in-built online slicer that users can use to prepare their designs for 3D printing. It is compatible with most of the common FDM 3D printers and it is easy to use. Get to know how SelfCAD slicer works in the video below.
SelfCAD also comes with many resources to help one learn the software. For example, there are many interactive tutorials that you can use to learn the software and 3D modeling in general practically. There is also SelfCAD academy for those who like step by step structured courses. 3D modeling tutorials for beginners and 3D modeling 101 series are Youtube videos that you can use to learn the program too.
Final Thoughts on Choosing Between 3D Printing Using Filament or Resin
Resin and filament technologies each have their own set of benefits and uses. Filament 3D printing continues to be a favorite among many users because of its adaptability, availability, and affordability. Filament prints are great for a wide range of applications, from functional parts to prototypes, because of their strength, durability, and high build volumes.
But resin 3D printing shines when it comes to producing prints with fine details and flawless surfaces. Jewellery, dental models, and figurine production are just a few examples of the many fields that benefit greatly from its exceptional visual quality and attention to detail. There are some businesses that simply cannot function without resin printing despite the fact that it comes with a heftier price tag and requires special attention.
In the end, the user's unique requirements, personal tastes, and financial limitations will determine whether filament or resin 3D printing is better. Whether you're just starting out as a hobbyist, a professional, or an expert in the field, knowing the advantages and disadvantages of each technology will help you make an informed selection and realize 3D printing's full potential.
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