After upgrading to Build 462 I am experiencing a problem generating the following Gcode. When starting this job line G53Z-5.000 plunges down -5 into the stock. I am not sure where it is picking up the -5 from. In job setup I selected Shapeoko 3 with a retract height of 1mm. In the Tool Path starting depth is Zero with a max depth 2.000mm. Any help will greatly be appreciated.
are you sure that line is the problem ?
G53Z-5 is supposed to bring the Z to the top, 5mm below the switch (the 5mm is hardcoded in CC)
Does it not do that before the tool change/router start prompt ?
The problem may be elsewhere in your setup?
I put the Mach3 into single line and step thru it line by line. It looks that way to me.
I am using Mach3 and the post processor is Shapeoko 3
Grab 464 from https://carbide3d.com/carbidecreate/beta/ and use the Basic-GCode post instead.
That did it. This is what I generated
. I lot different.
I am having the exact same issue. I am using the GBRL post processor and there’s that G53Z-5.000 command which slams the tool into the workpiece. Really annoying. The old version of the software used a G0X0.000Y0.000Z2.540 command instead. After selecting the ‘basic G-code’ post processor, I get the same file when saving the G-code. This line should definitely NOT be there and it wasn’t in previous versions of the software.
I can confirm that in built 464 this bug seems to have been fixed and that both Basic and GRBL post processors don’t insert the offending command into the output. Thanks.
G53Z-5 is supposed to move the Z axis up to 5 mm below the limit switch… it does for me
Well, that may be so, but the GRBL and Basic post processor should not make an assumption about the presence of a limit switch on any of the axis. I hadn’t before 462 and should not now. If you select the Shapeoko post, I am all for using all of its features in the code, of course. I only have a 3018-PRO CNC at this point, but maybe I’ll get to add limit switches at some point … already bought the switches themselves, but haven’t installed them, yet.
I had the same thought. But as far as I understand, G53Z-5 tells the machine to go to absolute Z=-5 in machine coordinates. On a Shapeoko with homing switches that’s 5 mm below the top of the Z where the homing switch is, but indeed on a machine with no switches/no homing point, it could be anywhere I guess…
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