Voron2 300

The Voron2 300 is an FDM 3D printer from Voron2 with a 300 x 300 x 300 mm build volume.

Specifications

The Voron2 300 is a prosumer-grade FDM (Fused Deposition Modeling) 3D printer featuring a build volume of 300 mm (X) x 300 mm (Y) x 300 mm (Z). Based on the open-source Voron 2.4 design, the 300 mm variant is considered the "sweet spot" of the lineup, offering a balanced combination of build volume, structural rigidity, thermal stability, and speed.

CoreXY and Flying Gantry Kinematics (300 mm Specs)

The Voron2 300 utilizes the "Flying Gantry" Z-axis design. In this setup, the heated bed is stationary, bolted to the bottom frame. The entire X/Y CoreXY gantry: which supports the print head carriage, linear rails, and X/Y motors: travels vertically up and down the Z-axis.

Calibration

Follow this 8-step calibration guide to configure the Voron2 300.

• Frame Squaring and Structural Verification

Before installing the linear rails, verify that the frame is square. Use a machinist's square to check all extrusion joints. Measure the frame diagonals in the X-Y, X-Z, and Y-Z planes.

• Expected result: Diagonal differences under 0.8 mm to ensure a square frame and prevent gantry binding.

Common defects

• Hardware defects and mechanical weaknesses
• Gantry Sagging on Power Loss: When the printer is powered down, the flying gantry can drop unevenly under its own weight. This can cause the gantry to bind or twist, loading the belts or rails. Consider installing Z-axis lock mechanisms or configuring Klipper macros to position the gantry safely before shutdown.

What it is used for

Best Use-Cases

• High-Speed ABS/ASA Printing: The enclosed chamber and CoreXY kinematics are suitable for printing ABS and ASA parts quickly without warping [6, 9].
• Precision Production Runs: The QGL gantry leveling and MGN linear rails provide high dimensional accuracy for batch production.