Trouble with Carbide motion

CNC Machines Shapeoko
1

I am using Fusion 360 to draw and create G-code I use metric so I don’t run into the translation issue with it, but I still have my code either just don’t do anything after you load the end mill, or after a bit without moving it gives me a limit switch hit. I’m not sure what to do. I am thinking about using different g-code sender maybe one that I can see what is going on. I know it’s been asked be for but what do most of you use? or is there something I need to change in what I am doing now?

here is the begging part of my code that did not start at after the stop for the end mill. the code is really simple just a 4 circles with a holes in the middle of each

%
(wire backing )
(cut out )
(T1 D=6.35 CR=0 - ZMIN=-7.85 - flat end mill)
G90
G17
G21
G28 G91 Z0
G90

(2D Adaptive2)
M9
T1 M6
S8000 M3
G54
M7
G0 X-286.138 Y-83.783
Z15
Z5
Z3.185
G1 Z2.55 F1219.2
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G0 Z5
X-275.434 Y-269.942
Z3.185
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2

how are you exporting the code from 360? I just run a post process and import that into carbide motion. For me the only thing missing from CM is a probing feature.

3

I am using the post process out of 360 I use the generic carbide 3d (grbl) onto a zip drive then up load that into the laptop running carbide motion.

4

The most popular other options are Universal Gcode Sender, bCNC, GrblGru and Chilipeppr — I believe everything is listed at: http://www.shapeoko.com/wiki/index.php/Communication_/_Control

You should always preview your files — CAMotics seems to be popular for that — I use an old, free version of NC Plot. Community-maintained list of options on the wiki: http://www.shapeoko.com/wiki/index.php/Previewing_G-Code

5

I’ll try out that CAmotics but to me it looks like the same thing as simulate in 360, but if it catches something I did not see in 360 it will be worth the time.

6

Grbl doesn’t know how to do M6. The post processor puts it in there because CM interprets it, but that may be where your problem occurs. If your job is just one end mill, load up the mill first, do your zeroes beforehand and edit out that M6. (delete the line).

A few of things to watch out for in F360: Defaults often take full depth cuts. Lead-in and lead-out don’t seem to care whether they are going full depth into stock (if you aren’t doing a full clear on the way down). It does a G28 at the end which appears to go home on my Nomad, but it depends on setup/config, I believe.

1 Like
7

OK thanks Mark
. the few jobs I have gotten to run did do the full cut so I have been adding in the multiple deeps at 1mm pre and I had not clue about the M6 which is why I asked today

8

one more question how do you delete that M6 I did not see anywhere in 360 before I post process. and CM don’t really let you do a lot or I don’t know how to do a lot with it.

9

If the Autodesk Fusion post-processor can’t be edited to prevent it from appearing, then one would edit the G-code text file.

10

Just load it up in a text editor and delete the line is what I was suggesting.

There might be a post processor option to suppress, but I don’t remember off the top of my head.

11

Mark
that seems to have helped I also turned $20 and $21 back to “0” so I am not fighting limit switches