There is no G3 or G2 code?

[arosura 1]

I searched .gcode file from cura, and it only provides G1 or G0 for moving.

Is there any method to make G2 or G3 code?

Edited January 25, 2016 by Guest

[avogra 68]

The Ultimaker Firmware is based on Marlin, which is derived from GRBL like most of the sub-10'000$ 3D printers out there. GRBL doesn't support circular motion because it is highly optimized to run fast on 8bit Atmel Microcontrollers.

At the same time, the widely used STL format contains only triangles. That means there are no curved surfaces that could be translated into G2/G3 instructions.