OK - here’s a strange one. I’m cross-posting between the Vectric and Snapmaker forums to see if anyone can shed some light on this problem. Here’s a pic of the end goal. [CleanShot 2023-07-05 at 18.31.35@2x] So I’ve created a roughing path with a 3mm end mill, but every 4 layers or so, it decides…

And the result of the ticket is that the Marlin code they’re using doesn’t properly support G2 & G3 commands. But the workaround is to preview any models using https://ncviewer.com since it appears to use the same library and will show the badly interpreted G2/G3 arc cuts. For roughing passes, you c…

And a little feedback from the vCarve forums that are pointing towards a bug in the Snapmaker’s interpretation of the G2 commands which makes sense as it seems to be based on the arc it’s trying to cut around the inside points of the corner cuts. This also makes sense since on the bottom right circl…

Latest firmware I assume? If so, you could try to compare the g-code between Luban and vcarve, or fusion360 and vcarve to find out if it’s software bug. If g-code seems alright, Support Ticket Form with the model so they can try to identify the bug.

It’s the latest firmware and after some more feedback, it seems to be a bug in the Marlin library used in Snapmaker. Someone pointed me to https://ncviewer.com where it previews Marlin gcode which displayed exactly what the Snapmaker tried to cut, even though the gcode doesn’t include those arcs. A…

Oh, and the cut worked fine, but the rocking of the Snapmaker pulled things slightly out of alignment, but it’s still a pretty good proof of concept for when I get access to a machine with a fixed bed. [IMG_2996]

Thank you for updating the post, sucks that it is this way. Did they mentioned of it will be fixed?

Unfortunately, no ETA given, but I did reach out to the maintainer of ncviewer to get pointed to the GitHub repository where I’ll be filing a bug once I figure out which repo has the current Marlin library.

[image] G2-G3 arc moves feed not interpreted correctly in CNC mode Snapmaker 2.0 Had a major failure this morning with some errant G3 commands and carved up some of the metal clips holding down a nice piece of red oak on my A350. I used VCarve 11 and the Snapmaker post-pr…

Grrrr. At the very least there are workarounds.

I know this is an old post but I just started testing VCarve Pro and I guess the issue persists given the last update to the firmware was in 2015. Do you know if like G3 codes you can change G2 codes to G1? Any additional detail appreciated as the two files I’m testing have lots of G2 but no G3. …

Best method is to preview everything in ncviewer to ensure that it’s going to cut as expected. AFAIK it’s using the same back-end library so what you see there is pretty much what the Snapmaker is going to do. The problematic paths were small curves for corner cuts on external paths (at least that’…

CNC routing arbitrary circles

Snapmaker 2.0 (3-in-1)

nweolu July 11, 2023, 2:13am 9

Looks like it’s been an ongoing issue with marlin from 2020, nobody could fix…

G2/G3 GCode firmware support

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CNC routing arbitrary circles

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