A machanical claw

I started working mroe on the mechincal finger side of the subsystem !!!! more cad and this was a lot of brainstroming and also asking people also pu my new prototype of octofinger on print it keeps failing cuz how many parts there is

This project addresses the risk faced by workers who must physically interact with dangerous environments using their hands and limbs. It aims to design, plan, build, and test a portable mechanical hand extension that protects the user from direct exposure to hazards, without relying on electricity  this is important because many high-risk environments (e.g. wet, flammable, or electrically unsafe sites) make powered devices impractical or unsafe.The device must be affordable and easily replaceable, since the intended context of use includes under-resourced settings such as schools, small research teams, and individual explorers who cannot access expensive commercial alternatives. This context directly shapes two key constraints: a total build budget of $10–20, and individual replaceable components costing under $5 each together, these allow damaged parts to be swapped cheaply rather than requiring the whole device to be replaced, extending its usable life and reducing cost barriers to entry.The design emphasises moderate precision and power, aiming to mimic the function of a human hand closely enough to complete simple manipulation tasks such as gripping or holding objects, without attempting the full dexterity of a human hand  this scope is deliberately limited, because achieving full dexterity would require significantly more components, cost, and complexity than the budget and non-electric constraint allow.Weight is constrained to under 1 kg, because a heavier device would be harder for a single user to operate one-handed over an extended period, reducing accessibility for the intended non-specialist user group (students, small research teams). Similarly, the device must require no more than 10 minutes to assemble by a typical high-school-aged user, since ease of use is central to the project’s accessibility & inclusivity focus  a device that requires specialist training would defeat the purpose of the project.The device must operate in hazardous conditions relevant to its context of use, including toxic gases and submersion in liquids, since these represent the realistic environments the device is intended to protect users from. It must include a minimum of three axes of mobility, providing enough range of motion to complete basic reach-and-grip tasks without the added cost and complexity of full multi-axis dexterity.Finally, materials should be reusable or low-waste where possible, and the device should be able to be fully disassembled by hand for part replacement. This reflects the project’s secondary ethical consideration of environmental sustainability by minimising material waste across the device’s working life and supporting easy remanufacture rather than full disposal when parts wear out. The project is expected to be completed within the first semester, allowing sufficient time for iterative prototyping and testing within the constraints of a school-based build

Today more cad decided on the design also Your responseEnd UserScientists. Explorers, students hobbyist Need/problem/opportunityPeople physically interact with dangerous or inaccessible environments [exp. Toxic substances, Extreme temperatures and or unstable structures and compressors] there direct hand contact Poses a risk of injury.Research existing project designs. Annotate your drawings/pictures with the design factors: Function (what it has to do), User needs & requirements, Materials & components used, operating environment, safety, cost, waste & energy Interesting or key features, Drawings/Pictures- this is a rotating linkage mechanism intended to translate a small amount of input energy into a larger reaching motion .Function: Reference design showing a fully articulated robotic hand with multiple finger segments, used to understand feasible complexity for a manual/mechanical (non-electric) version.User needs & requirements: Demonstrates the level of dexterity possible, but also shows that fully articulated designs like this are complex — informs a decision to simplify for a low-cost, non-electric version.Materials & components: Multi-part assembly with distinct segments per finger — useful reference for component count and joint placement.Operating environment: Original design appears intended for controlled/lab conditions; my version needs to withstand harsher conditions (moisture, chemicals).Safety: N/A — reference design only.Key feature/limitation: High dexterity, but likely too complex and costly to replicate within a $10–20, non-electric constraint — informs the decision to simplify the final design.Source: [add the link/citation where you found this] Drawings/PicturesFunction: Early concept mapping of where joints and tendons would need to be replicated mechanically to achieve hand-like movement.User needs & requirements: Highlights that the design needs multiple independent points of articulation (fingers) rather than a single rigid claw, to mimic natural grip.Function: Illustrates the core hazard this project addresses — direct skin contact with an unknown or hazardous liquid.User needs & requirements: Reinforces the need for a barrier device that lets the user interact with liquids/substances without direct skin exposure.Materials & components: N/A — hazard reference photo.Operating environment: Confirms the device must be tested for submersion resistance (already reflected in your evaluation criteria).Safety: Central justification for the whole project — this is the exact scenario the mechanical hand is designed to prevent.Key feature: Visual evidence supporting the problem statement in Section 1. Evaluation of existing products(brainstorm results)Thoughts and ideas for my project:Mechanical hand that extends off your own hand and uses ledges and transfers the force from your own hand to the mechanical hand that even under high risk jobs is ok as it is only 3d print and you dont actually hurt your own hand Glove and tension cable design Telescoping rod and claw designHydraulic

This is part of planning for this project did reasearch on diffrent designs ext

i am working on adding a octapus part into the sketches and so it will be powered by two strings and the second and thrid finger . and also put in refrences for the cad

this is the first day working on this it is a lot of brainstroming and i decided that this is going to be pretty fully 3d printed Research and brainstorming identifying end users needs and opportunities as well as evaluating existing products.End UserScientists. Explorers, kids Need/problem/opportunityTo lower risk of coming in contact with dangers