Prusa i3 Mk3/Mk3s

The Prusa i3 Mk3/Mk3s is an FDM 3D printer from Prusa3D with a 250 x 210 x 210 mm build volume.

Calibration

• Leveling the Bed with BLTouch
• Step: Begin by accessing the printer’s menu and navigating to the "Bed Leveling" option. Select "Auto Leveling" to initiate the BLTouch sensor. The printer will probe the bed at nine points (3x3 grid) and adjust the Z-axis offset accordingly.
• Expected result: The bed will be leveled automatically, ensuring consistent first-layer adhesion across the entire print area.

Common defects

• Hardware defects and mechanical weaknesses
• Symptom: The extruder gear can wear out over time, causing filament slippage and under-extrusion.
• Cause: The extruder’s dual-gear system generates high friction, leading to gear deformation when printing abrasive materials like carbon fiber.
• Solution: Replace the extruder gear with a hardened steel version or reduce printing speeds for abrasive filaments.

What it is used for

The Prusa i3 Mk3/Mk3s excels in scenarios requiring precision, versatility, and reliability. It is ideal for printing mechanical components, prototypes, and consumer goods with materials like PLA, PETG, and TPU. The printer’s auto-leveling and enclosed build chamber make it suitable for materials like ABS and nylon, which require consistent temperatures.