TK,

I had a simple job was was to use a 90 degree vcarve bit to taper the top of some drill holes so taper screws would sit flush. It took only a few minutes to draw up the drawing and the g-code created was very short since it used canned cycles.

I first positioned the MDF to cut and set my G54 location for X,Y at the corner of the material. Then I set the Z to the top of the material and normally that would be all I need to do except raise the Z up and press cycle start.

Well I was so confident this would run perfect that I did not have my handle next to the estop button. Big mistake. The big plowed right through 1" MDF ruining the pieces. Ugh.

I got another piece of material and just assumed I forgot to zero the Z on the top of the material. Well I did it again and zero'd it on the top of the material moved it up but this time set the feedrate to very slow. When I pressed cycle start I noticed the Z dro have something like 3.25 and it was only .5" above the material. I pressed halt then pressed rewind, then zero'd the Z axis again on top of the material and moved it up an inch and told it to run. This time it worked correctly and only went down -.215". I have studied this code and for the life of my can not figure out what I did wrong. The code is listed below and came right out of CAM program at work. I had it output generic FANUC three axis code since that has worked in the past for my simple three axis machine with the Kflop. Any idea of what caused this issue? I had a friend of mine who has a larger machine with a KFLOP test the same code and it did the same thing on his machine.

Thanks for taking a quick look.



%
O0000(CNC-SUPPORT-COLUMN-3)
( T2 | 1/4 INCH ENGRAVING TOOL 90 DEGREE X .001 TIP LONG | H2 )
N100 G20
N102 G0 G17 G40 G49 G80 G90
N104 T2 M6
N106 G0 G90 G54 X.5 Y1. S6000 M3
N108 G43 H2 Z.1
N110 G99 G81 Z-.215 R.1 F5.
N112 Y6.2813
N114 Y11.5625
N116 Y16.8438
N118 Y22.125
N120 Y27.4063
N122 Y32.6875
N124 Y37.9688
N126 Y43.25
N128 X3.825
N130 Y37.9688
N132 Y32.6875
N134 Y27.4063
N136 Y22.125
N138 Y16.8438
N140 Y11.5625
N142 Y6.2813
N144 Y1.
N146 G80
N148 M5
N150 G91 G28 Z0.
N152 G28 X0. Y0.
N154 M30
%