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Fine Tuning Calculations for Grbl Firmware

First model a 100x100mm square
Measure your end mill and confirm it's cutting diameter.
(Your CAM package must know the correct diameter. Don't Assume. Measure.)
Run the operation and measure the X and Y directions.
Input the info below and press Calculate

X Expected Dist.:

X Actual Dist.:

X steps/mm:

Y Expected Dist.:

Y Actual Dist.:

Y steps/mm:

Percent X Error:

Percent Y Error:

Corrected X steps/mm:

Corrected Y steps/mm:

Type the below into GCode Console for X Correction

Type the below into GCode Console for Y Correction

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Convert Inches / Millimeters

Inches:

Millimeters:

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G Code Reference

Word Addresses:

X## = X position	Y## = Y position	Z## = Z position
I## = X arc center	J## = Y arc center	K## = Z arc center
F## = feedrate	P## = dwell time in 10000th sec

G Code:

Parameters: Definition: Example:

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Machine

M3 Carve King Mega V Power Route

Units

Inches MM

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Surface Feet Per Minute (SFPM) = (π * Diameter * RPM) / 12

Solve for: Diameter RPM SFPM

Diameter-inches	RPM	SFPM

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Cutting Time

Workpiece Length

Cutting Length per Minute

Cutting Time

Feedrate Calc	Fine Tune CNC
Ball Endmill Finish	Inches/MM
SFM Calc	Time Calc
GCode

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Feedrate Calculator

MillRight CNC

Fine Tuning Calculations for Grbl Firmware

MillRight CNC

Convert Inches / Millimeters

MillRight CNC

G Code Reference

MillRight CNC

Ball Mill Finish Calculator

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Settings

MillRight CNC

Machine Control Tutorials

MillRight CNC

Machine Setup Tutorials

MillRight CNC

Surface Feet Per Minute (SFPM) = (π * Diameter * RPM) / 12

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Cutting Time

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