How to increase G0 (rapid move) speed on my MPCNC?

Software / Firmware SKR Boards
1

Hi everyone,

I’m trying to increase the G0 (rapid move) speed on my MPCNC because right now the machine moves very slowly when traveling from one point to another. It’s wasting a lot of time between cuts.

I’ve already tried:

  • Changing the feedrate and acceleration directly in the firmware;

  • Adjusting the same parameters using the CNCjs console after flashing the firmware;

…but nothing seems to change, the rapid movements are still slow.

Has anyone run into this issue before or knows how to properly increase the G0 speed on the MPCNC?

Any suggestions would be really appreciated!

Thanks!

2

It depends on the CAM you are using, so we need more information. :slightly_smiling_face:

3

I create my designs in Illustrator, then import them into Aspire 12.5, where I set up all my toolpaths.

After that, I export the .gcode file and load it into CNCjs, which is also where I control the CNC.

4

So either the problems are already in Aspire or the controller. I am regrettably unfamiliar with both.

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5

You’re using skr pro I assume? So is it running Marlin?

Marlin doesn’t care about the difference between G0 and G1. It needs a feedrate defined or it will just use the last feedrate you used. In Estlcam, we solve it by adding feedrates to G0 commands:

G0 X100 Y600 F3000
G1 Z0 F300

There is a config parameter in the marlin config to make it move G0 at the max feedrate. I can’t remember the name, but it is in configuration adv. I haven’t tested it.

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6

Thank you very much for the explanation, later I’m going to open the firmware again and take a look.

I try to send commands like G0 X100 Y600 F3000 and I get an ‘unknown error’ in the CNCjs console

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7

Hmmm. That seems weird. Can you paste a screenshot?

8

image
image1919×1079 222 KB

9

I tried a few more times, and now it works when I set the speed.

10

It’s already solved, I uncommented this line #define G0_FEEDRATE 3000 // (mm/min)on config.adv and from now on all G0 moves have a speed of 3000 mm/min.

Thank you very much to everyone, especially to Jeff for taking your time to help others.
I hope this can help future users.

3 Likes
11

That’s very strange. I must be missing something obvious. I’m glad you got it working.

Marlin used to be the standard here and a bunch of the topics were trying to talk through quirks like this. Most of that has been replaced with the jackpot and fluidnc. The issues there are mostly formatting the config file and a lot less operating issues.

But some of us still have the know how to help in Marlin.

1 Like