Hello, first offthis is my first request for help on this site. So I will start here notknowing if this is a lack of my understanding of LinuxCNC or the samething with Fusion360 CAM. So I will start here to make sure thelatter is good to go.
Made some things tocut on my little MDF machine in my garage and for simplicity lets sayit’s a square. Ran it through the CAM on Fusion360 setting the WCSorigin to be at front of the part, left hand side and top of the workpiece and no extra stock added during the CAM setup and do the 2DProfile, simple. Great piece of software for weekend hobbyist BTW.
Load up LinuxCNC andthen home the machine. Clamp in my work piece, in this case half inchplywood on a spoil board. Install my cutting tool. Move the machinedown and over to touch off both X and Y at where I want them to startin relation to the WCS I set in CAM. I believe I’m correct in thisunderstanding, right? Next I bring down the Z axis and touch it offto the top of the part with a sheet of paper. Once again I believeI’m correct in this understanding, right? Side note, the Z axistool touch off button is grayed out and cannot select it. So I’mjust picking the touch off button, since it is the only one I canchoose. Which shouldn’t make a difference, since all code startsfrom triple zero, right? Move the Z up a little, turn on the routerand press play to run the code.
The Z goes up tohome and prompts for a tool change. Click OK since the correct bit isalready install. It continues over to X0 Y0 and down to what I’mguessing should be Z0, right? But it starts cutting air. One time it drovethe bit in hard, but I think that was a my bad. The other three timesI have used it to cut parts it has been in the air. So continuing on,I stop the code and turn off the router. Move the Z down and do thesheet of paper again. But this time the tool touch off button is notgrayed out and can be selected so I use it now to redo the Z axiszero. Restart the OP and it cuts the part perfectly like I wouldexpect it to.
Whats going on? What am I messing?
Here is the first 30 lines of code from Fusion360
%
(JOERGBIG_OP1)
(T1 D=0.125 CR=0. -ZMIN=-0.465 - FLAT END MILL)
N10 G90 G94 G17G91.1
N15 G20
N20 G53 G0 Z0.
(18 INCH BLIND HOLES2)
N25 M9
N30 T1 M6
N35 S35089 M3
N40 G54
N45 M9
N55 G0 X1.625Y0.9375
N60 G43 Z0.6 H1
N70 G0 Z0.2
N75 Z0.08
N80 G1 Z-0.0312F165.776
N85 G0 Z-0.0272
N90 G1 Z-0.0625F165.776
N95 G0 Z-0.0585
N100 G1 Z-0.0937F165.776
N105 G0 Z-0.0897
N110 G1 Z-0.125F165.776
N115 G0 Z-0.121
N120 G1 Z-0.1562F165.776
N125 G0 Z-0.1522
N130 G1 Z-0.1875F165.776
N135 G0 Z-0.1835
N140 G1 Z-0.2187F165.776
N145 G0 Z-0.2147