# G3

Controlled Arc Move

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#### G2 & G3: Controlled Arc Move

Supported by RRF_1.18 and later.

**Usage**

- G2 Xnnn Ynnn Znnn Innn Jnnn Ennn Fnnn
*(Clockwise Arc)* - G3 Xnnn Ynnn Znnn Innn Jnnn Ennn Fnnn
*(Counter-Clockwise Arc)*

**Parameters**

**Xnnn**The position to move to on the X axis.**Ynnn**The position to move to on the Y axis.**Znnn**The position to move to on the Z axis.**Innn**The X coordinate of the arc centre**relative to the current X coordinate**(optional, ignored if R parameter is present).**Jnnn**The Y coordinate of the arc centre**relative to the current Y coordinate**(optional, ignored if R parameter is present).**Ennn**The amount to extrude between the starting point and ending point.^{1}**Fnnn**The feedrate per minute of the move between the starting point and ending point (optional, defaults to the current feed rate).**Rnnn**The radius of the arc (optional, RRF2.03 and later)

Either the R parameter must be provided, or at least one of I and J must be provided. To draw a complete circle, define the position of the centre using I and/or J and make X and Y the same as the current X and Y coordinates.

^{1}Where a tool has more than one extruder drive then Ennn:nnn:nnn etc is supported to allow for the individual movement of each to be controlled directly. This overrides the extruder mix ratio set with M567

**Examples**

G2 X90.6 Y13.8 I5 J10 E22.4; (Move in a Clockwise arc from the current point to point (X=90.6,Y=13.8), with a center point at (X=current_X+5, Y=current_Y+10), extruding 22.4mm of material between starting and stopping) G3 X90.6 Y13.8 I5 J10 E22.4 ;(Move in a Counter-Clockwise arc from the current point to point (X=90.6,Y=13.8), with a center point at (X=current_X+5, Y=current_Y+10), extruding 22.4mm of material between starting and stopping) G2 X100 Y50 R200 ;(draw a clockwise arc with radius 200 from the current position to X=100 Y=50)

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