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What is the difference between FDM and SLA ?

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Fused Deposition Modeling (FDM) and Stereolithography (SLA) are both additive manufacturing technologies, but they differ in their processes and materials. FDM, as discussed in , involves the extrusion of filament material layer by layer to create the desired object. On the other hand, SLA, as highlighted in , uses a liquid resin that is cured by a UV laser to solidify each layer. SLA typically offers superior dimensional accuracy and part quality compared to FDM due to its precise curing process. Additionally, SLA printers are becoming more affordable, making them increasingly popular for various applications, including load-bearing ones. In contrast, FDM is known for its simplicity and cost-effectiveness, making it widely used in various industries like medicine, automotive, and aerospace .

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Open access•Journal Article•DOI Product Development and its Comparative Analysis by SLA, SLS and FDM Rapid Prototyping Processes C. M. Choudhari, V D Patil - Show less +1 more 01 Sep 2016 18 Citations	FDM (Fused Deposition Modelling) and SLA (Stereo-lithography) differ in their rapid prototyping processes, impacting factors like material shrinkage, dimensional accuracy, time, cost, and surface finish.
Open access Theoretical analysis and practical case studies of sla, polyjet and fdm manufacturing techniques Catalin Moldovan, Cosmin Cosma, Petru Berce, Nicolae Balc - Show less +3 more 29 Sep 2018 3 Citations	FDM uses filament extrusion, while SLA employs liquid resin curing. FDM builds layer by layer with solidified filament, whereas SLA uses UV light to harden liquid resin layers.
Open access Mechanical characterization of SLA 3D-printed parts Francesca Cosmi, Alberto Dal Maso - Show less +1 more 01 Jan 2019	SLA offers superior dimensional accuracy and part quality compared to FDM. SLA printers are now more affordable, making them popular for various applications, including load-bearing ones, due to improved material properties.
Open access•Posted Content•DOI Implementation-First Approach of Developing Formal Semantics of a Simulation Language in VDM-SL 27 Mar 2023	Not addressed in the paper.
Open access•Journal Article•DOI Digital fabrication of facial prostheses from photogrammetry, three-dimensional modeling and 3D printing on filament (FDM) and resin (SLA). Manuel Siguero Guerra, Eliane Cristina Viana Revoredo - Show less +1 more 01 Apr 2023-Blucher Design Proceedings	FDM (Fused Deposition Modeling) uses thermoplastic extrusion, while SLA (Masked Stereolithography Apparatus) cures resin with UV light. FDM is for face references, SLA for detailed prostheses.

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When compared to FDM, SLA generally provides better accuracy and resolution?5 answersBased on the data from the provided contexts, SLA generally provides better accuracy and resolution compared to FDM in additive manufacturing. Research comparing 3D printed dental models found that SLA and DLP techniques using ethylene di-methacrylate resulted in models within the required accuracy range, with DLP showing higher precision but also a higher bias. Another study highlighted that Material Jetting (MJ) technology, specifically the PolyJet method, exhibited the highest accuracy and printing resolution among FDM, SLS, and MJ technologies. Additionally, a study evaluating PETG-filament in FDM printing for geometrical accuracy found that the process repeatability and product's accuracy were correlated, emphasizing the importance of accuracy in FDM printing. Therefore, based on these findings, SLA generally offers better accuracy and resolution compared to FDM in various additive manufacturing applications.

Which strategies are most effective in SLA?4 answersExplicit instruction is considered more effective than implicit instruction in second language teaching, particularly in terms of direct instruction and explicit error correction. For young learners acquiring a second language in a family environment, the "Equip" Strategy, which focuses on every aspect of language learning, quality and quantity of exposure, uniqueness of the learning experience, learner initiative, and interaction with people, has been found to be feasible and effective. Successful language learners often employ language-learning strategies that correlate with strategies documented in major SLA studies, such as self-directed and lifelong language learning. In language acquisition, listening is considered crucial, and the use of appropriate listening strategies, especially metacognitive strategies, significantly improves learners' listening proficiency. Interactional feedback plays a significant role in improving classroom learners' use of the target language, and a wide variety of interactional feedback techniques should be used in accordance with contextual, individual, and linguistic variables.

What is LADA?5 answersLADA, or Latent Autoimmune Diabetes in Adults, is a form of autoimmune diabetes that resembles both type 1 and type 2 diabetes. It is characterized by a slower progression of destruction of pancreatic beta cells, which produce insulin. LADA is often misdiagnosed as type 2 diabetes, leading to incorrect treatment and potential complications. Early diagnosis is crucial for proper management and improved quality of life.LADA can be diagnosed by screening for diabetes-associated autoantibodies, such as glutamic acid decarboxylase antibodies. It is important to consider LADA in adults with a personal or family history of autoimmune conditions or those who initially respond well to type 2 diabetes treatments but later become difficult to manage.The pathogenesis of LADA involves both adaptive and innate immunity, as well as the impact of the gut microbiota on host immunity. Therapies targeting the immune system and gut microbiota may hold promise for intervention in LADA.

How does SLM RPD compare to other RPD methods?5 answersSelective laser melting (SLM) is an additive manufacturing technology that can be used to produce removable partial denture (RPD) frameworks. A study comparing the accuracy of SLM RPD frameworks with other RPD methods found that SLM RPD frameworks fabricated with optimized process parameters showed significantly better accuracy than those manufactured with non-optimized parameters. Another study compared classic production on a lathe with hybrid production using the SLM method and machining only technologically significant surfaces on a lathe. The research found that the hybrid production process using SLM was more efficient, cost-effective, and energy-efficient compared to classic production. Additionally, SLM has been used in the manufacturing of lattice structures, which provide design flexibility and structural optimization. However, there is a risk of overheating in SLM lattice structures, which can lead to visible damage and compromise performance. A numerical simulation method has been developed to predict and minimize the risk of overheating in SLM structures.

What is SLA printing?4 answersSLA printing is a technology that uses stereolithography to fabricate objects by consecutively placing layers of material based on an electronic design. It is a rapidly growing technology used in various areas including healthcare and aviation. SLA printing allows for the production of complex shapes and can be used to create lead-free piezoceramics, which have applications in aviation, marine, and nuclear industries. The process involves using a light source to cure a liquid resin contained in a resin container, and the optical path is changed to direct the light to different shaping plates. SLA printing has also been explored for its sustainability, with efforts to develop sustainable materials and improve the end-of-use options for 3D printed parts. Overall, SLA printing is a versatile technology with applications in various industries and ongoing efforts to make it more sustainable.

What are the differences between SLT and other methods of teaching language?5 answersSituational Language Teaching (SLT) differs from other language teaching methods in its emphasis on behaviorist theory and guided repetition. SLT provides more structured and substantive activities for learners, influenced by behaviorist principles. In contrast, the use of websites in language teaching represents a paradigmatic shift and a qualitative leap forward in promoting autonomous and content-based learning. Websites serve as a catalyst for acquiring language skills and integrating them into intercultural communication. The communicative approach, on the other hand, focuses on using language for communication and interaction, rather than solely on grammar rules. The integrated approach combines communicative and interactive language use with the teaching of grammar rules. Each method has its strengths and weaknesses, and they can complement each other to achieve different language goals and objectives.

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