Development of a 3D printer for printing concrete

“Good day! I need to develop a drawing of a machine (device) for stitching sheets of agricultural crops. I will provide photos and video materials. Main requirements for the project: Simplicity of design: The machine should be as simple as possible to manufacture and assemble. It is preferable to use readily available materials that can be easily purchased. I understand that some parts will still need to be made individually (custom-made). There are no obstacles with shaping (bending) sheet metal and welding work. Reliability and minimal maintenance. Desired power supply is 220 V. However, I leave the final decision to you — as specialists, you know better which option will be better and easier to implement. Below, I am adding videos with examples of similar machines, as well as videos of similar devices for stitching brooms — perhaps some design solutions can be borrowed from there for our project. Have a great day, I look forward to your proposals!” https://youtube.com/shorts/rT6q4pa_VSY?si=_6iCZLlPV0YXvtUo https://youtu.be/V9nMWLxpIbA?si=xfFpMIFf6qxE0WRB

Output data: Existing building: single-story office building; structural scheme — frame-less brick; external walls thickness 380–640 mm; internal load-bearing walls thickness 380–510 mm; ceilings — precast reinforced concrete hollow-core slabs; foundations — columnar with FBS blocks; approximate dimensions of the building — 40.34 × 28.84 m; building area — about 747 m². Planned: dismantling of the existing rafter system and roof; addition of a second floor with glued laminated timber structures; installation of a new wooden roof structure; reconstruction of the existing building with partial changes in loads on load-bearing structures.Required to perform: Analysis of the provided technical report on the building inspection. Verification calculation of existing foundations, walls, and ceilings for the perception of additional loads from the addition. Development of structural solutions regarding: installation of reinforced belts; strengthening of brick walls; strengthening of foundations (if necessary); ensuring spatial rigidity of the building; nodes for load transfer from glued laminated timber structures to the existing building. Calculation and justification of the adopted solutions. Issuance of a set of drawings for the stages of KB/CM/KZ (depending on the adopted solutions). Consulting support during the development of wooden structures and implementation of the project.Output documentation: Scientific and technical report on the building inspection. Measurement drawings. Architectural solutions for the addition. Preliminary concept of glued laminated timber structures.Requirements for the contractor: availability of a design engineer certificate in terms of ensuring mechanical resistance and stability; experience in the reconstruction of existing buildings; experience in designing the strengthening of brick or stone buildings; preferred experience working with additions of wooden structures or glued laminated timber.Message text for Freelancehunt Good day. We are looking for a designer to participate in the project of reconstructing an existing single-story brick office building with a subsequent addition of a second floor made of glued laminated timber. It is necessary to take on the development of structural solutions regarding: reinforced belts; strengthening of existing brick walls; if necessary — strengthening of foundations; ensuring spatial rigidity of the building; load transfer from new wooden structures to the existing building. A technical inspection of the building and measurement drawings have been completed, which will be provided to the contractor after preliminary discussion of the project. Preferred experience: reconstruction of existing buildings; development of solutions for strengthening stone or brick structures; work with additions or wooden structures. Please include in your response: a brief overview of your experience; examples of similar completed projects; available certificates; estimated budget and timelines for the work. We are ready for long-term cooperation on similar projects.

We are looking for a physicist engineer or a design engineer with experience in developing induction chargers, Qi/Qi2, and working in KiCad. We already have: a ready-made wireless charging board for two devices; two coils for charging a phone and headphones; the case design and 3D models. What needs to be done Add a third charging channel for Apple Watch. Select and calculate the coil, electronic components, and connection scheme. Resolve the issue of correct Apple handshake and compatibility with Qi/Qi2. Check if the system can stably charge three devices simultaneously. Calculate the required power of the power supply, heating, and main electrical parameters. Consider the shielding of the coils, as the charger is installed inside a wooden case. Prepare or refine the schematic and PCB in KiCad. Provide recommendations on design, safety, and further certification of the device. We are considering two work formats: full development and preparation of files; engineering consultation with calculations and recommendations that our specialist can implement. Please, when responding, write: whether you have experience with wireless chargers Qi/Qi2; whether you have worked with Apple Watch or MFi components; whether you can perform calculations for coils, power, heating, and shielding; attach examples of similar projects.

Planning options for a shower module for military use based on 20 and 40-foot shipping containers. Various combinations are available. This is an AI-generated photo; it needs to be adjusted and smart dimensions for walls, partitions, and overall sizes applied for further manufacturing.

Assembly Principle: Completely weld-free, exclusively using bolted connections (“NO-WELD BOLTED CONSTRUCTION”). The structure is modular (Flat-Pack) to minimize logistics costs and facilitate self-assembly by the customer. 1. TECHNICAL REQUIREMENTS AND AESTHETICS • Requirement for the developer: The product must be designed to have a flawless, presentable commercial appearance for export to the EU market. • Intuitive assembly: The design should allow for the simplest assembly possible, enabling the customer to assemble the box independently without special tools. • Frame material: Stainless steel AISI 304 (matte), sheet thickness — 1 mm. • Construction: Corner system with flanging for rigidity and safety. Stacking (nesting) during transportation. • Wall filling (sandwich): PIR board (30 mm) with a tolerance of ±4 mm. The groove design should compensate for this tolerance, eliminating gaps. • Wall cladding: PIR board is covered on both sides with smooth stainless steel sheets of 0.5–0.6 mm. • Assembly: Strictly with bolts (stainless steel A2/A4). Minimum number of bolted connections inside the working area for ease of cleaning and disinfection. • Feet: Height 30 mm, integrated into the lower binding contour. 2. DOOR CONSTRUCTION AND LOCKING • Sealing: Rubber seal around the entire perimeter of the reveal and a stop (false bar) for 100% elimination of gaps. • Hinges: Seat design that eliminates play (bolts serve only the function of clamping). • Locking: Mechanical latch lock “finger in hole”. • Door configuration: Doors spanning the full width and height of the facade, divided horizontally into two independent sections: upper and lower. ◦ Lower section: blind. ◦ Upper section: has a viewing window. ◦ Operating principle: The lower section opens first and, when closing, tightly presses against the upper section. • Viewing window (Product No. 1): Located in the upper section. Double-sided, with an air layer. Clamping strips for securing any transparent material (glass, plastic, or film) with a thickness of from 2 to 5 mm. 3. VENTILATION SYSTEMS (Identical for both products) • Protection: Mesh (stainless steel, wire 0.5 mm, cell 0.8 mm). Installation — through clamping frames with bolts (without drilling the mesh). • Upper exhaust (120 cooler): Cutout 200x200 mm in the roof, cooler installation through a flange with M4 thread. Under the cooler (above the mesh) — adjustable damper (shutter). • Lower intake: Two openings (left and right), raised 100 mm from the floor. Area of each — 300 cm². Both intakes have adjustable dampers (shutters). 4. PRODUCT SPECIFICATION • PRODUCT No. 1 (Vertical 600x600x1200 mm): Two-section doors (lower blind, upper with window). Equipment: lamp mounts, cable pass-throughs, mounts for IR film (on the wall), curtains for mesh suspension, strip for the shield from the end. • PRODUCT No. 2 (Horizontal cabinet 600x600x600 mm): Single-section doors without glazing. Equipment: lamp mounts, cable pass-throughs, mounts for IR film (on the wall), stainless steel guides for shelves, strip for the shield from the end. 5. WHAT IS REQUIRED TO BE DELIVERED: 1. 3D assembly: STEP / SolidWorks formats, with the ability to freely disassemble the model. 2. Drawings: Detailed drawings of assembly nodes. 3. Unfoldings: DXF format (considering the K-factor of bending). 4. Specification table (BOM): All stainless steel fasteners.