Reprap, Plus-sa (large build prusa)

thingiverse

This text is not an instruction manual but rather a work-in-progress teaser for a modified 3D printer based on the Mendel and Prusa designs. The builder has faced some technical issues with their computer, which has prevented them from entering tags or seeing comments. Despite this, they have decided to share their progress so far. The printer features a larger build envelope of 300 x 250 x 150mm, and the designer has made several modifications to suit their needs. For example, the X-ends are interchangeable and lock onto smooth rods from the sides to prevent splitting along layers. Additionally, the A-side threaded diagonal rods are positioned outside of the front and rear cross rods for better clearance with the extruder at high z-limits. The project is still a work in progress, with only pictures and a 3D PDF available for viewing. The builder plans to update the information as they continue working on the printer. They chose to modify the Prusa design because they believed it could be enlarged with some reinforcements. To address potential issues with a taller machine, polycarbonate gusset panels were added to the front and rear, significantly improving stability. To ensure proper functioning of the Y-axis belt tension, a strut was fitted that spans the Y-pulleys and sits in the stepper bracket. The adjustable fork end allows for easy tensioning. Although deflection tests on the smooth rods showed minimal deflection under 6 lbs of pressure, the builder remains confident that it will not be an issue during printing. Heated bed and ABS printing are discussed as potential challenges, with a heated chamber or radiant heat suggested as possible solutions for ABS printing. The designer hopes to continue updating their progress and thanks everyone for their interest in their project.