Tool offset Z ignored
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There is a known issue which is that if you change tool and the new tool has a different Z offset, the offset is on taken into account until you send a G0 or G1 command that includes the Z parameter. Is this what you are seeing?
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Yes, I guess it is. So it will work if I add z-lifting to my gcode?
Heres the relevant parts of my gcode - init and head change:
G90
M82
M106 S0
M140 S60
M190 S60
G28 ; home all axes
G10 P0 R210 S210
G10 P1 R210 S210
G92 E0
G1 E-1.0000 F1800
G1 Z0.180 F1002
; layer 1, Z = 0.18
T0
; tool H0.200 W0.480
; skirt
G1 X128.035 Y135.490 F9000
G1 E0.0000 F540
G92 E0
G1 X128.300 Y135.380 E0.0103 F1635
…...G1 X141.305 Y158.772 E4.7989
G92 E0
G1 E0.0000 F600
; layer 2, Z = 0.18
T1
; tool H0.200 W0.480
; inner perimeter
G1 X139.180 Y159.180 F9000
G92 E0
G1 X130.820 Y159.180 E0.3003 F1628
G1 X130.820 Y150.820 E0.6006
G1 X139.180 Y150.820 E0.9009
...... -
I tried this, and that made no difference:
[init]
….....
; layer 1, Z = 0.18
T0
G91
G1 Z0.01
G1 Z-0.01
G90
; tool H0.200 W0.480
; skirt
G1 X128.035 Y135.490 F9000
G1 Z0.180 F1002
......
G1 X141.305 Y158.772 E4.7989
G92 E0
G1 E0.0000 F600
; layer 2, Z = 0.18
T1
G91
G1 Z0.01
G1 Z-0.01
G90
; tool H0.200 W0.480
; inner perimeter
G1 X139.180 Y159.180 F9000
G92 E0
G1 X130.820 Y159.180 E0.3003 F1628
G1 X130.820 Y150.820 E0.6006
.........Any ideas for a workaround?
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And now I am doing this, which still does not work:
G90
M82
M106 S0
M140 S60
M190 S60
G28 ; home all axes
G10 P0 R210 S210
G10 P1 R210 S210
M104 S210 T0
M104 S210 T1
M109 S210 T0
M109 S210 T1
G28
G92 E0
G1 E-1.0000 F1800
G1 Z1.180 F1002
; layer 1, Z = 0.18
T0
G1 Z0.180
; tool H0.200 W0.480
; skirt
G1 X128.035 Y135.490 F9000
G1 Z0.180 F1002
….................
G1 X141.305 Y158.772 E4.7989
G92 E0
G1 E0.0000 F600
; layer 2, Z = 0.18
T1
G1 Z0.180
; tool H0.200 W0.480
; inner perimeter
G1 X139.180 Y159.180 F9000
G92 E0
G1 X130.820 Y159.180 E0.3003 F1628
G1 X130.820 Y150.820 E0.6006
............. -
Am I doing this right - this is what you ment, right? - With the G1 Z# after the tool change?
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I just realized - the displays claims that the z position is 4.6 when printing with the second head, but the printer is not at z4.6. Again - the firmware seems to think it is at 4.6, only it is not.
Kulitorum
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This is worse even….
Turns out that if you set offset Z for tool 1 to anything other then 0, that head is always printing at the same z position as the first layer. In my case 0.18mm. So every layer is printed at z=0.18m. At the same time, the displays will always show the Z-offset value, so the display in my case always shows 4.6, but it always prints (every layer) at 0.18.
I fixed it with a metal file. My z-offset is now 0 and that works better.
BTW, OffsetX is also not used. So I had to calibrate the U axis in homeu.g
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Hi i build a machine with dual x carriage and i had the same problem.
what you need to do after a tool change is add G01 Z[current z value] (in absolute coordinates) and it will work fine.
i made small script that does this for me. it would be great if we could add
this in the toolchange files
with a variable for the current z height -
If you look at my last gcode, is that not exactly what I am doing?
Maybe you can post an example gcode? - or parts of it?`
Thanks.
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Is there any progress on this?
Is it fixed in 1.19?
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having same problem any update ?
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Thanks for reminding me. I'll fix it in beta 7.
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Great! Looking forward to it
