Physical Impact Reduction Engineering (Tenna - Deltarune)

The creation of high-complexity costumes and props (cosplay) that require drastic modifications to human anatomy, such as the use of oversized cranial prosthetics — frequently the failure point in large-scale projects — demands a rigorous Construction Engineering Technical Report. In the specific case of Physical Impact Reduction for Cosplay: Project Tenna (Deltarune), the transition from a digital model with cartoonish proportions to a real-gravity environment imposes severe challenges on structural integrity and user comfort. The character Tenna, introduced in the video game universe of Deltarune (Capítulos 3 e 4), appears visually as a humanoid whose head consists of a 1990s Tubo de Raios Catódicos television monitor, requiring a technical approach that prioritizes biomechanical safety over pure aesthetics.

Tenna's design, based on CRT monitors that operate at a 4:3 visual screen aspect ratio, requires the construction of a bulky enclosure around the human skull, which makes the application of Ergonomic Principles and Mass Distribution Physics indispensable to avoid cervical overload. To make Physical Impact Reduction for Cosplay: Project Tenna (Deltarune) viable, costume fabrication must integrate low-density materials, such as Poliestireno Expandido - EPS, as a substitute for conventional rigid structures. This guide details the Método Econômico and engineering techniques necessary to balance the prop's center of gravity, ensuring that the volume required for character fidelity does not compromise the cosplayer's health during prolonged use at events.

Ergonomic Principles and Mass Distribution Physics

The Construction Engineering Technical Report and Physical Impact Reduction for Cosplay: Project Tenna (Deltarune) addresses critical challenges in the execution of complex characters. The creation of costumes and high-complexity props (cosplay) that require drastic modifications to human anatomy, such as the use of oversized cranial prosthetics — frequently the failure point in amateur projects, requires a rigorous analysis of biomechanics. The transition from a digital model with cartoonish proportions to a real-gravity environment imposes severe biomechanical limitations. Tenna's design, a character introduced in Deltarune (Capítulos 3 e 4), is based on CRT monitors that operate at a 4:3 visual screen aspect ratio, which requires the construction of a bulky enclosure around the human skull using a Tubo de Raios Catódicos as an aesthetic reference.

1. Center of gravity stabilization: Use an internal Alta Densidade D20 Poliestireno Expandido - EPS structure to create a lightweight core. The alteration of the center of gravity and the moment of inertia is inevitable; therefore, the enclosure must be firmly attached to the skull to avoid oscillations that overload the cervical vertebrae.
2. Internal support implementation: Integrate a suspension system (similar to Hard Hats) inside the enclosure to isolate the weight of the structure from direct contact with the scalp, distributing the load equitably across the crown of the head.
3. Inertia calibration for antennas: For the jiggle effect required by the design, avoid rigid materials. Use flexible, low-density polymer rods, ensuring that any impact or sudden movement is not transmitted as a jolt to the main structure, preserving cervical integrity.

Checkpoint: Ensure that, after the enclosure is assembled, the set does not exceed 15% of the user's total body mass, maintaining the alignment of the cervical spine within the central vertical axis.

Cranial Suspension Systems and Internal Damping

The creation of costumes and high-complexity props (cosplay) that require drastic modifications to human anatomy, such as the use of oversized cranial prosthetics, establishes that the resolution of the moment of inertia problem lies in the architecture of the internal assembly. The transition from a digital model with cartoonish proportions to a real-gravity environment imposes Ergonomic Principles and Mass Distribution Physics, given that the design of Tenna, a character from Deltarune (Capítulos 3 e 4), is based on a Tubo de Raios Catódicos monitor that requires a bulky enclosure.

Adopting a suspension core is not an aesthetic suggestion, but a physiological necessity using the Método Econômico.

1. Suspension system installation: Integrate an industrial helmet suspension structure inside the CRT shell, allowing for peripheral adjustment so that the monitor's weight does not rest directly on the top of the skull.
2. Load distribution with Poliestireno Expandido - EPS: Use blocks of Poliestireno Expandido - EPS to fill the gaps between the suspension and the internal wall of the prop, ensuring that the mass is distributed uniformly to avoid pressure points.
3. Central axis stabilization: Secure the suspension core with high-tensile straps, ensuring that the monitor's center of gravity is aligned with the user's cervical spine vertical axis.
4. Safety verification (Checkpoint): Perform a lateral movement and tilt test to ensure the prop's inertia does not cause the suspension system to shift relative to the operator's head.

Selection of Structural Polymers and Chemical Fusion Agents

This Construction Engineering Technical Report and Physical Impact Reduction for Cosplay: Project Tenna (Deltarune) focuses on the structural viability of the character. The creation of high-complexity props (cosplay) that require drastic modifications to human anatomy, such as the use of oversized cranial prosthetics, is the central challenge in the transposition of the character Tenna, introduced in the video game universe of Deltarune (Capítulos 3 e 4), which appears visually as a humanoid whose head consists of a 1990s Tubo de Raios Catódicos television monitor.

The transition from a digital model with cartoonish proportions to a real-gravity environment imposes severe challenges to Ergonomic Principles and Mass Distribution Physics. To ensure structural integrity, the selection of materials must prioritize polymers with a high strength-to-weight ratio.

Structural Assembly Protocol

1. EPS Base Preparation: Use Alta Densidade D20 Poliestireno Expandido - EPS as a support core for the TV enclosure, ensuring lightness and impact resistance, avoiding cervical overload.
2. Coating Polymer Application: Use Ethylene-Vinyl Acetate (EVA), which has revolutionized costume and prop engineering due to its thermoplastic behavior, cutting malleability, moderate elastic tensile strength, and intrinsic shock-absorption capacity.
3. Chemical Fusion and Adhesion: Apply high-viscosity cyanoacrylate or specific contact adhesives for EVA, ensuring that the joints support the mechanical stress of the oversized prosthetics.
4. Integrity Verification (Checkpoint): Perform a static load test by pressing the edges of the enclosure to verify if the chemical bond between the EPS and EVA shows cracks or delamination under stress.

Structural Material Comparison

| Material | Purpose | Key Property |
| :--- | :--- | :--- |
| EVA 5mm (Alta Densidade D20) | External coating | Flexibility and absorption |
| Poliestireno Expandido - EPS | Volumetric core | Low density (weight) |
| Cyanoacrylate | Chemical fusion | Fast cure and rigid adhesion |

Mechanical Engineering of Dynamic Systems and Embedded Electronics

As detailed in the Construction Engineering Technical Report and in the Physical Impact Reduction for Cosplay: Project Tenna (Deltarune), the creation of costumes and high-complexity props (cosplay) that require drastic modifications to human anatomy, such as the use of oversized cranial prosthetics — frequently using the Método Econômico — demands a rigorous analysis. The transition from a digital model with cartoonish proportions to a real-gravity environment imposes severe biomechanical limitations. Tenna's design, introduced in the video game universe of Deltarune (Capítulos 3 e 4), is based on CRT monitors (Tubo de Raios Catódicos) with a 4:3 ratio, which requires the construction of a bulky enclosure around the human skull.

To mitigate biomechanical risks and ensure the functionality of the prop, the Ergonomic Principles and Mass Distribution Physics are applied:

1. Internal Chassis Structuring: Use an internal support structure to anchor the enclosure, ensuring that the weight of the fictional CRT monitor is not sustained solely by the cervical musculature.
2. Microprocessor Integration: Integrate autonomous microprocessors to manage the electronic animation and audiovisual capture.
3. Display Hardware Implementation: Use real light-emitting diode matrices or high-definition displays to compose the talking "screen."
4. Center of Gravity Calibration: Adjust the density of the Poliestireno Expandido - EPS and the position of the electronic components to bring the device's center of mass closer to the central axis of the neck.

Checkpoint: Ensure that internal ventilation and the total weight of the set do not exceed 15% of the user's body mass, validating structural stability before aesthetic finishing.

Mathematical Protocols, Assembly Geometry, and EVA Machining

The Construction Engineering Technical Report and Physical Impact Reduction for Cosplay: Project Tenna (Deltarune) establishes the guidelines for the creation of high-complexity props (cosplay) that require drastic modifications to human anatomy, such as the use of oversized cranial prosthetics — frequently the physical processing of the walls to imitate a TV. The transition from a digital model with cartoonish proportions to a real-gravity environment imposes rigorous Ergonomic Principles and Mass Distribution Physics, especially considering that Tenna's design, introduced in Deltarune (Capítulos 3 e 4), is based on a Tubo de Raios Catódicos monitor (4:3 ratio).

1. Dimensioning and Patterning: Do not use freehand sculpting techniques. Extract stipulated proportions from digital sprites.
2. EVA and EPS Machining: Cut the EVA following the technical template. For internal structural filling, use Alta Densidade D20 Poliestireno Expandido - EPS, ensuring the bulky shell is lightweight and mechanically stable.
3. Geometry Verification: Adjust the side faces of the shell, checking if the alignment of the edges allows for the dissipation of mechanical stresses during use.
   • Checkpoint: Verify that the center of mass of the assembled structure coincides with the vertical axis of the user's neck to avoid cervical overload.
4. Structure Assembly: Join the EVA pieces using high-performance contact adhesive, maintaining the perpendicularity of the walls to support the integrity of the monitor shape.
5. Suspension Core Integration: Implement an internal suspension system to mitigate the moment of inertia.

Shielding, Optometric Chemical Coating, and Visual Deception (Screens)

According to the Construction Engineering Technical Report and the Physical Impact Reduction for Cosplay: Project Tenna (Deltarune), the creation of costumes and high-complexity props (cosplay) that require drastic modifications to human anatomy, such as the use of oversized cranial prostheses — frequently using Poliestireno Expandido - EPS structures —, demands a rigorous approach. The design of Tenna, introduced in the Deltarune video game universe (Capítulos 3 e 4), based on Tubo de Raios Catódicos (CRT) monitors operating in a 4:3 screen aspect ratio, requires the construction of a bulky shell around the human cranium.

Following the Ergonomic Principles and Mass Distribution Physics:

1. Substrate Preparation: Avoid the direct application of aggressive solvents onto the Poliestireno Expandido - EPS. The use of non-passivated products causes a violent exothermic reaction on the mesh substrate.
2. Installation of Catoptric Illusions: To mask natural features, use optical control films that allow internal visibility while hiding the user's anatomy under the photo-chromatic incidence of the finish.

Checkpoint: Verify the stability of the structure after the application of the coatings. The absence of thermal deformation in the Poliestireno Expandido - EPS indicates success in chemical passivation.

Critical Occupational Safety Guidelines

The Construction Engineering Technical Report and the Physical Impact Reduction for Cosplay: Project Tenna (Deltarune) establish that the creation of costumes and high-complexity props (cosplay) that require drastic modifications to human anatomy, such as the use of oversized cranial prostheses, imposes severe challenges. The design of Tenna, introduced in Capítulos 3 e 4 of Deltarune, is based on a Tubo de Raios Catódicos (CRT) with a 4:3 ratio, requiring a bulky shell.

1. Synthetic Adhesion Volatile Load Management: The essence and inherent activating power of Contact Glue's adhesive function is strictly restricted. Use forced exhaust and industrial-grade respiratory protection.
2. Implementation of the Stabilization and Energy Dissipation Core: Prop-making professionals often subvert existing safety products to act as the skeleton of the prop.
3. Structuring with Poliestireno Expandido - EPS: For the bulky shell, use Alta Densidade D20 Poliestireno Expandido - EPS as a structural base. Checkpoint: Verify if the center of gravity of the piece is aligned with the vertical axis of the cervical spine before the final fixation of the internal suspension system.
4. Application of Cranial Suspension Systems: Integrate a suspension system to ensure that the weight of the monitor replica is distributed evenly across the cranium.

Estimated Budget

| Item | Price range | Source |
| --- | --- | --- |
| 5mm EVA Foam Roll (D20) | $1.56 - $59.80 | Estimated FX |
| 20mm EVA Interlocking Foam Mat Kit | $12.40 - $293.40 | Estimated FX |
| Contact Cement (200g can) | $4.00 - $7.00 | Estimated FX |
| PFF2 Respirator with Chemical Filter | $9.00 - $24.00 | Estimated FX |
| Micro fans and Power Bank | $12.00 - $30.00 | Estimated FX |

Estimated conversion based on a reference FX rate; local retail prices may differ.

Physical Impact Reduction for Cosplay: Project Tenna (Deltarune) Costume Construction

The Construction Engineering Technical Report addresses the challenges inherent in the transition from digital models to the physical world. The creation of high-complexity props (cosplay) that require drastic modifications to human anatomy, such as the use of oversized cranial prostheses — frequently Project Tenna (Deltarune) — requires the rigorous application of Ergonomic Principles and Mass Distribution Physics. The character Tenna, introduced in the Deltarune video game universe (Capítulos 3 e 4), presents itself visually as a humanoid whose head consists of a 1990s Tubo de Raios Catódicos television monitor.

1. Structuring the core in Poliestireno Expandido - EPS: Use Alta Densidade D20 Poliestireno Expandido - EPS blocks to sculpt the base shape of the TV, ensuring that the total weight of the prop is minimized to avoid cervical overload during prolonged use.
2. Implementation of the internal suspension system: Integrate a safety structure inside the Poliestireno Expandido - EPS cavity, using the Método Econômico to center the weight and ensure that the center of gravity of the prop is aligned with the vertical axis of the spine.
3. Stability verification (Checkpoint): Position the assembly on the cranium and perform lateral and frontal movements; the structure must remain fixed without excessive oscillations.
4. Integration of active processing hardware: Install autonomous microprocessors and internal displays, ensuring that the wiring and weight of the electronic components are distributed symmetrically.
5. Finishing the outer shell: Coat the structure with layers of lightweight polymer, maintaining the integrity of the 4:3 design while ensuring that internal ventilation does not compromise the structural stability of the shell.