Acu-Rite CNC 3500i User Manual

7 Programming: Canned Cycles, sub-programs



Use the circular slot cycle to mill a slot along a circular path. You 
must position the tool directly over the circle center prior to the 
circular slot cycle block, or use the X and Y words. 



Activate a tool prior to programming circular slot cycle so that the 
CNC will know the cutter diameter. 

Diameter

D

Diameter of the slot circle. The diameter 
must be larger than the slot width. 
(Required)

StartAngle

E

The angle in degrees to the slot's first end. 
(Required)

Sweep 
Angle

F

Sweep angle of the slot measured in 
degrees between the two ends. 
SweepAngle (F) is applied CCW from 
StartAngle (E) regardless of the sign of its 
value. Must be non-zero. (Required)

Width

W

Width of slot in Y-axis. (Required)

StartHgt

H

Z absolute starting height (0.1” or 2 mm 
above surface). 

Executed in rapid. (Required)

ZDepth

Z

Absolute depth of slot. (Required)

StepOver

A

The distance the tool steps over (width of 
cut) in the X and Y axes as it mills out the 
slot. Defaults to tool radius, which is the 
max.

DepthCut

B

The depth of each cut per pass. Defaults to 
tool diameter. Max is the full ZDepth in 
parameter Z, less bottom finish stock. A 
negative value will cause the finish pass to 
finish the side walls in steps down.

XCenter

X

X coordinate of the slot center point. 
Defaults to current position.