janusgreenb / positron_lt

RepRap Version of the Positron V3 3D-Printer, improved design, no machined parts, integrated PSU

Positron LT

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About

The Positron-LT is a printer made for everyone, especially hobbyists and professionals who don't want to or can't use machined parts. This printer is a RepRap version based on the innovative Positron V3 formfactor and motion-system which was created by KRALYN.

Although the printer is printed, it can still be folded and thus still fits into a filament box. Thus, there are no disadvantages compared to the original, it may even have some improvements

Note: This project is a work in progress! The primary design is ready, updates and changes will be made continuously.

LT

LT stands for LighT Since the printer is made of printed parts instead of machined parts, it is lighter than the original Positron V3.

• Lighter to source
• Lighter to build
• Lighter to transport

Advantages

• No Machined Part
• All mechanical parts can be sourced on websites like AliExpress, Amazon or your local hardware store.
• Much less parts to assemble than the V3
• Integrated PSU (power supply unit) with 200W
• 3mm GT2 timing belt on XY (cheaper and easier to source as the original Synchromesh wire)
• The base chassis is made of 10x10 Makerbeam extrusions and other Makerbeam parts. All other structural parts can be printed!
• Simplified Z axis by using a leadscrew. Easy to assemble by folding up
• Improved toolhead cooling
• could be used with larger XY Stepper motors up to 26mm

Specs

• Max Print Speed: 250mm/s (under investigation)
• Max Travel Speed: 350mm/s (under investigation)
• Acceleration: 9800mm/s^2 (under investigation)
• Build Volume: 180x180x180mm
• Weight: 2300-2500g (with integrated PSU)
• Hotend max temp: 250C
• Build Plate Max temp: 80-100C
• Power supply: 24V; 200W
• Footprint: ~200mmx200mm

RepRap

RepRap means that most parts of the printer can be printed and nothing needs to be machined. Only basic tools like a drill or a saw are needed. All other parts are readily available and can be bought online or might even be available in a hardware store.

License

Positron LT is a 3D printer design that is fully open source, which means anyone can use, modify, and share the design. We use a dual-licensing model to ensure that the project remains open source while providing a separate license for entities who want to use the design for financial gain.

Licensing Explained

• For personal, educational, and non-commercial use: The design is available under the GNU General Public License v3.0 (GPLv3). This means you can use, modify, and share the design freely, as long as you also share any changes you make under the same dual-licensing model. This ensures that the open-source nature of the project is maintained. See the GNU General Public License v3.0 (GPLv3) file for the full text of the GPLv3.

• For commercial use or financial gain: We offer a custom commercial license for companies or individuals who want to use the design for commercial purposes or financial gain. This separate license includes a small royalty fee, which helps support the project. See the Commercial License file for details.

Contributing

We welcome and appreciate contributions to Positron LT! By contributing to this project, you agree that your contributions will be licensed under the dual-licensing model, with the GPLv3 applying to non-commercial use and contributions, and the commercial license applying for commercial use or financial gain.

License Summary

Positron LT uses a dual-licensing model:

• The GNU General Public License v3.0 (GPLv3) for personal, educational, and non-commercial use and contributions. See the GNU General Public License v3.0 (GPLv3) file.
• A commercial license for commercial use or financial gain. See the Commercial License file.