Z axis cutting too deeply

Software / Firmware Jackpot Board / FluidNC
1

Hey folks,

I’ve been running into an issue with my Z axis. I have been cutting different things with different depths and thickness to try to figure out what’s going on. But it all results in the same thing.

Whatever depth I set in ESTLCAM it seems to cut about 50% deeper than I requested. However with jogging and measuring with my calipers the Z appears to be accurate to .1 mm.

For instance in testing this yesterday I had it run some lettering at 1.5 mm, the cut came out to be 2.88 mm which kind of defeated the purpose of what I was doing.

I’ve checked the steps per mm calc, I’ve surfaced my spoil board to make sure it’s completely parallel with my beam, and the beam is as level as I can measure with a laser level.

I have the lowrider with the jackpot controller in it. Any ideas are helpful. Thanks folks.

EDIT: I forgot to mention I added the probe gcode from the ESTLCAM section, so I probe the surface before each run as well.

2

Try using G10 instead of G92.

G10 L20 P0 X0 Y0 Z0

I think something happened with g92 in fluidnc. G92 seems sort of random, I actually just changed the milling basics page two days ago because of it.

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3

Perfect thank you! I’m traveling right now but once I get back I will try this first thing and report back. Thanks Ryan!

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4

I’ve been having similar problems , either cuts to deep or cuts air

in mill mage would i put the below in the job header ?

G21
G90
G94
G10 L20 P0 X0 Y0 Z0 (set current location to zero, survives reboot)

head
head783×793 43 KB

5

I’m not familiar with mill mage but I would guess yes. You can put it in the job header, have it generate a program and then open it with notepad to check that it at the top before the program itself.

6

You’re a magician Ryan, this seems to have done the trick! Thank you again.

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