Also included is a spindle speed section and some other tips and tricks. $100-2 have already been covered in‘ Introduction to CNC for a Total Novice - Getting Started’ along with some other settings, so this guide will focus on acceleration and max rate settings. It's recommended to enter something approximately close to actual travel now to avoid problems in the future.
Set your $13x max travel settings if you plan on using homing or soft limits. Set to no greater than 80% of absolute max to account for inertia, cutting forces, and motor torque reductions with speed. Tweak your $12x acceleration and $11x max rate settings to improve performance. There are multiple resources online to show you how to compute this for your particular machine, if your machine manufacturer has not supplied this for you. This is dependent on your stepper increments, micro steps on your driver, and mechanical parameters. Start by ensuring your $100,$101, and $102 axes step/mm settings are correct for your setup. Acceleration values set to 30mm/sec/secĪt the end of the GRBL configuration page it says the following:įinally, tune your settings to get close to your desired or max performance. Acceleration values set to 30mm/sec/secĪs above but with acceleration set to 1000mm/sec/secĪs above but with acceleration set to 5000mm/sec/secĭraws a more complex shape designed to determine the effect of increasing the $120-122 acceleration values when using a Spindle Motor. Sample GCode file of a dragon engraving with a max spindle speed of 8000ĭraws a more complex shape designed to determine the effect of increasing the $120-122 acceleration values when using a laser. Sample GCode file of a dragon engraving with a max spindle speed of 1000. Sample GCode file to engrave‘sainsmart' modified for a max spindle speed of 8000 Sample GCode file to engrave‘sainsmart' used with a max spindle speed of 1000 Sample GCode file for the acceleration tests
The files included are as follows:Įxcel spreadsheet which generates simple GCode used for testing the settings, mainly the acceleration test is relevant here. Along with the guide itself, to utilize this resource successfully you will need the accompanying files, which you can download together as a. This guide is a part of the "Introduction to CNC for a Total Novice"series. SainSmart Genmitsu CNC Router 3018-PROVer Kit.
SainSmart Genmitsu CNC Router 3018-PRO DIY Kit.Introduction to CNC for a Total Novice: Tuning GRBL Settingsīased off of the works of by Graham Bland The items you may need:
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