$131 = 200.000 (Y-axis maximum travel, millimeters) $130 = 200.000 (X-axis maximum travel, millimeters) $27 = 1.000 (Homing switch pull-off distance, millimeters)

$26 = 250 (Homing switch debounce delay, milliseconds) $25 = 500.000 (Homing search seek rate, mm/min) $24 = 25.000 (Homing locate feed rate, mm/min) $11 = 0.010 (Junction deviation, millimeters) Most GRBL programs have the ability to change the parameters and to import and export them almost on the fly which makes the above steps quite easy. Z axis measurements should in most cases be a similar approach but there are machines out there with a different Z screw pitch. 003 mm which is more than acceptable for these machines. I have one that is 398 but it repeats to less than. It it was more than 10mm then add to the steps per mm by no more than 50 and again repeat the steps.Īs you get closer to the 10mm target you will be reducing the amount added or removed.įor most machines you may be looking at an initial figure of 400 but when accurately done may end up with a number just short of that or just above. If it was less than 10mm then reduce the steps per mm count by no more than 50 and repeat the above steps. Measure again and check it was 10mm movement. Now tell the machine to move that axis 10mm Take a reading for an axis and write it down.

I use a cheap digital vernier for the next stage as it also allows me to fine tune the parameters. My own recommendation is to always use millimeters $13=0 There are a few calculators online to help with some of those aspects. This is especially true for a chines manufacturer who copies another chinese manufacturer (very common) Some manufacturers use different thread pitches. They may not be correct for your machine. Please be careful using other peoples parameters !Īt best they are a guide to somebody else's working machine. Hopes this helps anyone else with this issue. After looking through the files provided with the CNC3018 I found a copy of what I believe are the factory parameters for GRBL 0.9:

3018 woodpecker 3.2 grbl board