Link it => I purchased the MPCNC kit from this site with the Rambo
Software => My setup works with the crown
New => This post!
I've been trying to CNC this: https://www.instructables.com/id/Knife-Block/
The files I used, both dxf and gcode after modifying in ESTLCAM, are attached to this post.
The preview in ESTLCAM looks fine, interior cuts look fine, but when doing the final part cut on the exterior, roughly halfway through the depth, the path with cut into the interior and ruin the cut.
I was on the firmware that was shipped with the rambo (est. January 2018), but I’ve updated to the newest firmware and this is happening on that firmware as well.
This was on a freshly downloaded version of ESTLCAM and run with the newest version of Repetier Host.
Any guidance you could provide would be invaluable. I am trying to make some Christmas gifts.
It looks like the steppers skipped steps, but it could be something else. Some thoughts:
What does it sound like just before it went off path (did it vibrate and make some clicking sounds)? Are motors skipping steps (like something is interfering with the gantry travel)? How are the connections to the motors?
Your gcode is using arcs (G2/G3) which can cause problems and in both cases the cut went wacky when it was curving up while moving to the right. You could try turning arcs off, too, as an option in estlcam (under Setup, CNC Programs, at the bottom).
Paths like that in a random place are really hard to track down. They can even be from power spikes and dips on the same circuit (craziest one was a garage fridge turning on and off).
I looked at your Gcode and I agree with BT try no arcs.
What firmware version are you using. Like I said, only the one I released 2-3 days ago works with the files you have made. Without it you are not giving speed commands and that could cause your issues.
Well best I can offer is try estlcam. I can do very little help in fusion or a brand new post processor on a brand new firmware. I honestly do not know where to start.
If my crown doesn’t have an issue, and you are sure it is not electrical noise, then you are left with fusion, the PP, or very slight chance of the 302 firmware.
I would say do that cut with Estlcam we know there are no issues there. If you figured out fusion cam, estlcam is child’s play and should only take a minute to get your gcode. There are entirely too many places to mess up in Fusion and I can not even begin to diagnose those issues or spot them in raw Gcode. I do not have the time to run your file on a machine either.
