1.1 Purpose of the website
My name is di Domenico Giuseppe, and I am a sheet metal worker with a strong passion for computer science and Agebra. I combined these skills to create this website: a practical and fast tool for generating customized technical drawings directly online.
The project was born from my hands-on experience and the need to simplify complex processes by reducing time, errors, and waste. Over the years, I have developed algorithms that translate measurements into ready-to-assemble elements, and today all of this is encapsulated in a system accessible to anyone, without needing complicated software.
The site is mainly based on Perl and C++ for processing and generating drawings, while PHP serves as the interface for communication between the frontend and backend languages.
On the site, I chose to limit the text to the minimum to make the experience simple, immediate, and intuitive. For those who wish to dive deeper into every technical and functional aspect, this documentation provides all the detailed information.
1.2 Who is it for
This application is designed exclusively for sheet metal workers who are familiar with the practical challenges of the trade and want to improve the quality of their work. It is intended for those who want to optimize time and reduce errors.
Simply enter the measurements of the three sides to automatically receive:
· A complete technical drawing
· A detailed development of the parts
· Ready-to-use installation instructions
The entire system was designed to be immediate and practical, avoiding complex interfaces or unnecessary steps. Your manual work remains at the center: the tool simply helps simplify calculation and design, giving you more time to do what you do best.
2.1 Required inputs
Identify and mark the 3 corner points (in red)
Measure the intermediate distances (in blue) with 2 mm accuracy
Allowances on all three sides can be freely added in the calculations
Simply enter the measurements of the three sides to automatically receive:
· A complete technical drawing
· Detailed development of the components
· Ready-to-use installation instructions
2.2 PDF Generation
Once the data is entered and the parameters are confirmed, the system automatically generates a PDF file that includes:
· A scaled technical drawing
· Detailed development of the parts
· Installation instructions
The file can be downloaded, printed, or shared directly with collaborators.
3.1 Options
Before starting any project, it is important to check and adjust the standard developments, and possibly add new ones.
Development
Allowed development sizes range from a minimum of 20 cm to a maximum of 125 cm.
⚠️ Note: It is not possible to set developments in other project sections.
For angular seam systems, it is possible to define the play gap between panels, recommended at 1.5 mm.
Recursive dimensions allow development sizes to start from 0, which is useful for modular designs.
Also, make sure to select the correct printer type: standard is laser printer.
3.2 Start a new project
The form is already pre-filled with the project number (incremented by 1 from the last recorded project) and the name of the last responsible person.
It is recommended to add a title and a reference, so that projects can be organized properly.
On the Event screen, potential errors or success messages will appear
once you confirm that the data matches your project.
3.3 Shape selection
After clicking continue, a window appears with the shape selection. In our case, there are three:
This one, with the corner downward, allows reversing the installation direction. Not recommended due to higher mounting precision required.
This shape is rarely used in architecture but is still available.
This is the most common shape, sloping forward. A warning may appear if the slope is not forward.
It is also possible to set the lower side using Pythagoras.
3.4 Enter measurements
Once you have selected a shape, you can enter your 3 measurements. I recommend entering them with a precision of ±2 mm.
You may see error messages if a triangle cannot be constructed or if there are empty fields.
The material types include sheet metal or other types (composite panels, wood, asbestos, etc.).
3.5 Fastening system
We offer three types of locking systems
Angled seam
Grooved panel
Hooked system
Composite panels and others.
These will be described in more detail later
3.6 Angled Seaming
Angled seaming is one of the most common techniques for joining panels. It is recommended to select the desired width, but it is preferable not to exceed 67 cm, as larger sizes may cause unwanted noise due to wind influence and potentially waves in the material.
Double and single additions can be connected together, but if one of them is modified, the other will be automatically affected, unless the respective option is deselected. In that case, independent modifications can be made.
The addition on side A (front) is very important, as it determines the type of connection. Please note that the developments available in the selection box are those supported by the system: if one is missing, you will need to return to the "Projects/Options" section to add a new development. The system calculates the optimal division automatically, but it is still possible to add or remove a panel at will using the two arrows.
The system will display various advice and error prevention messages, but simply correcting the data will restore normality. The control is carried out using the latest artificial intelligence-based technologies.
For segments B (bottom) and C (top), the edge addition values are set by default to 1.5 cm, but can be freely adjusted. If something is unclear, feel free to contact us via our support.
3.7 Interlocking Seam Panels
Interlocking seam panels are a modern system widely used in contemporary architecture. They allow effective rear ventilation and provide flexible adjustment of the gap between the panel and the wall.
This gap directly determines the height of the panel and can be set between 0.5 cm and 5 cm. By default, the value is set to 2 cm, but it can be adjusted as needed.
This adjustability offers not only design freedom but also enhances performance in terms of ventilation and thermal regulation. The system is particularly suited for sleek and minimalist architectural styles.
3.8 Snap-in system
The snap-in system is one of the simplest and fastest assembly methods, as it only requires two bends. Despite its simplicity, it provides a stable and reliable connection. It is still used in certain regions today, especially where fast execution is necessary.
The configuration options are essentially the same as in the other two systems, except for the seam allowance – here only four options are available.
This selection menu shows the available variants. The system can be assembled quickly and tolerates small inaccuracies better than other methods. It is particularly suitable for situations requiring speed or when there is uncertainty on the construction site.
I clearly remember my training days – this system was our standard. Of course, it didn’t always fit perfectly, but it was installed quickly (with the rule “if it doesn’t fit, make it fit”) and still looked good in the end.