- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report
New to Fusion - help wth Fanuc code
We are trying to use the CAM feature to machine some parts but we are having issues. Our machines run on a basic Fanuc code and we are managing to machine the parts but there are a couple of things that I can't figure out!
Issue 1
The whole job is 1mm under size!
For some reason when machining the face of the plastic, the whole thing is 1mm thinner than the model?
Issue 2
At the end of the run, the cutter lifts up then plunges to a negative position into the job!
I know these are both post issues but being new to the software I am hoping someone can point me in the right direction!!
See pics attached
Thank you for any help
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report
Welcome to Fusion and the Fusion MFG forums!
Let's start off with some basic questions:
1) What is your actual machine, and what post processor are you using?
2) Does your machine have homing/limit switches?
3) Can you share your Fusion file here? This will help us rule out any toolpath or Setup missteps.
File > Export > Save to local folder, return to thread and attach the .f3d/.f3z file in your reply. If you'd rather not share the file publicly, you can private message me the A360 link to the file. Right click on the file in the Data Panel and select "Share Link". Copy that link, hover over my user name and select "Send Private Message"

Seth Madore
Customer Advocacy Manager - Manufacturing
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report
Thanks Seth for the quick reply.
The machines we use are XYZ Machine Tools RLX bed mills. They use a F6M Fanuc based code.
They don't like it if there is a helix in there so we have had to delete this in the script after the post!
The file attachments are .CAM or .GCD
I have been using the post processor Fanuc, Fanuc from the library but changed the output from .NC to .CAM
There no homing switches on the machines
Please see attached
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report
Hi Luke,
I took a look at your operation and made a couple of small changes. I'm not sure why the overcut or the plunge was happening. All looked ok when I simulated, aside from the crash on entry, though I did see a couple of other strange things so went into your settings and made a couple of adjustments.
First I changed your "boundary overlap" from 1mm that you had set to 0 and moved the 1mm to "Additional offset" which looked to clear the material around the edges a little better. I also turned on "Avoid/Touch Surfaces" and set the Mode to "touch" then selected the drive surfaces from your model. On simulation I didn't see anything that would indicate a plunge. Definitely check your G-code before running, but have a look at the changes and see if that works for you.
Hope that helps!
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report
Had a quick look at your files and I don`t see anything in your G Code that would cause the CNC to make the moves shown, it could possibly be the settings at the Machine and not within Fusion.
If your setup at the Machine is incorrect in that you have the Machine Zero and the Part Zero mixed up then those G28 lines of code would pretty much do exactly what you have, try it without the G28 commands and see what happens, carefully
![]()
Fusion