Process Diagram

Band 9: The flow-chart shows how a Christmas toy is produced using 3D printing on an FDM (fused deposition modelling) machine.

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Image for topic: The flow-chart shows how a Christmas toy is produced using 3D printing on an FDM (fused deposition modelling) machine.

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The image presents a flow diagram of the 3D printing process using FDM (Fused Deposition Modeling) technology. It starts with a "3D model / CAD software" where "CAD" stands for "Computer-aided design," shows the star-shaped 3D CAD data on the monitor. The process continues with an "FDM machine - building by layers" which illustrates a supporting filament, build filament, extrusion head, liquifier, platform, extrusion nozzles, and a support structure. Two parallely arranged spools are displayed feeding the filaments to the machine. The next stage is "Removing support structure" where the support is detached from the star-shaped object, followed by "Painting, cleaning and polishing" depicted with spray, water, and cloth icons. Lastly, the object is placed in a "UV oven" labeled "Curing - 20 min" to presumably harden or set the printed material.

Given the complexity of the image, the above description may not be entirely accurate.

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The diagram illustrates the process of manufacturing a 3D-printed star, from the initial computer-aided design (CAD) stage to the final painting, cleaning and polishing procedures.

Overall, the process involves several stages, beginning with the creation of a digital 3D model and ending with the removal of the supporting structure, UV curing and final treatment of the star.

Initially, the 3D model is being created using a computer-aided design (CAD) software, after which the digital file is used to produce the star using both support and build filaments. The FDM machine then gradually builds the star layer by layer using two types of filament, while a supporting structure is simultaneously formed. The printed star subsequently undergoes support removal. Once this process is completed, the printed star is cured in a UV oven for 20 minutes to ensure proper hardening of the material.

Finally, the cured star is painted, cleaned and polished.

Word Count: 150

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Overall Band Score

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Vocabulary Complexity:
C2 - Complex
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Grammar Mistakes: N/A

Vocabulary Repetition:

process: 3

using: 3

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Task Response

The report effectively addresses the task by describing the main stages of the 3D printing process in a logical sequence. It includes an overview and covers all key steps, from CAD design to final treatment. However, there are minor omissions and a slight misordering: the report places UV curing before painting, cleaning, and polishing, whereas the visual description indicates that painting, cleaning, and polishing occur before UV curing. Additionally, the report omits the detail that the support structure is removed before curing, which is mentioned but not fully integrated. To improve, ensure the sequence of stages accurately reflects the diagram and consider mentioning the parallel spools or the specific function of the support structure. Overall, the response is well-structured and meets the task requirements with only minor lapses.

Coherence & Cohesion

The report is exceptionally well-organized and easy to follow. The introduction clearly paraphrases the task, and the overview effectively summarizes the main stages. The body paragraphs logically sequence the process, with clear referencing and cohesive devices (e.g., 'Initially', 'subsequently', 'Once this process is completed', 'Finally') that guide the reader effortlessly. Paragraphing is skillfully managed, with a clear separation between the overview and detailed description. No lapses in coherence or cohesion are evident.

Lexical Resource

The report demonstrates a wide range of precise and sophisticated vocabulary, used naturally and accurately. Terms such as 'computer-aided design (CAD)', 'support and build filaments', 'layer by layer', 'supporting structure', 'undergoes support removal', 'cured in a UV oven', and 'proper hardening' show excellent lexical control. The phrasing is varied and avoids repetition, while maintaining a formal and academic tone. The vocabulary is fully appropriate for the task and shows flexibility in expression.

Grammatical Range & Accuracy

The report exhibits a wide range of grammatical structures with full flexibility and control. It uses a mix of simple, compound, and complex sentences, including passive constructions ('is created', 'is used', 'is cured') and relative clauses ('after which', 'Once this process is completed'). Punctuation and grammar are used correctly throughout, with no errors detected. The structures are varied and used appropriately, contributing to a polished and professional report.

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