Press Calibration Instructions (Page 2 of 2)

I've found you can manually tweak the z offset by populating some numbers in the eqn coefficients fields on the left. This gives you access to the adjustment check boxes. You have to manually start a print and observe the first layer every time, which is painful, but at least you can correct it.  I had to pull the heat sink off the hot end due to poor alignment, and found the z offset was 0.3mm off when I'd got it all back together. .. Better to adjust in software then have to redo the messing with guide bearing and spring.

Could someone capture the g-codes that soliprint uses when setting the z-offset?  I've been trying using m206 with no luck. Repetier Host still seems to ignore the offset.

soliprint isn't really working at all for me at the moment.

Or perhaps do an m501 after calibrating, to see if it is saved in firmware?

Thanks

Just got my press last night and Iam running calibration but this is what iam getting and seems to be off/different form everyone else. Am I doing something wrong?

This is my first 3D printer so I am new to this...any help is greatly appreciated. Thank you

EDIT: How do I post/upload pics? Its not letting me.....

I tried that but it said I was restricted from doing that too. Thats why I was really confused and not sure what was happening.

I figured my problem out and Iam now printing with my press. The walls are wavy so thats my next goal/thing to work on

~TruFord

EDIT: It wont even let me quote you -.- this is annoying

M851 doesn't work for me.  When I used to to get my current Z offset, I got back 5.00 (which is smashing the nozzle 2mm through the bed).  When I did a M851 Z 3.5, it echoed back 5.00.  I tried a M500 anyway, then another M851, and still get back 5.00.  Is my firmware borked?  This Press is 100% unusable thanks to this issue, and has been for weeks (with Solidoodle tech support 100% silent on the matter) -- the Z axis calibration in SoliPrint performs the mutli-point probe fine, but the "print" phase just smashes the nozzle through the bed, as does the first few layers of any print attempt.

EDIT:  okay, my bad -- I left out the Z part of the "write" command.  Now SP's Z-axis cal screen shows a starting value of 3.5 -- waiting for the Press to warm up, I'll give the Z-axis calibration another try.

Hello! My first post here.
I realy hope someone can help me out here.

Got my Press a week ago and had all the troubles that every one else got.
I managed to calibrate and do my first print and it went OK.

Now when i try to calibrate the bed goes DOWN instead of UP to trigger the switch.
I can no longer calibrate, its like Z is inverted.
I have tried to uninstall soliprint, didn't work.
I tried M502 and then M500 and then calibrate, didn't work.

Please help!

I've been attempting to calibrate my Press for the past week. Soliprint crashes on startup when I've tried running it on an old Windows 7 PC, so I've been testing using RH. So I'm unable to run the SP Z-Offset calibration test. I've managed to set up all the configs in RP from this thread and others on the forum, but my print bed has a downward slope that is causing the extruder to have a few mm gap with the bed as it gets closer to front. The support structure fails to stick to the bed and it leads me to believe that the auto-leveling isn't really affecting the gcode. I've managed to print a few things when I move the object to the back of the bed where it is more level, but this isn't a fix.

Here's my start gcode for RP, per forum suggestions:
G28 ; home all axis
G1 Z-5.0 F5000 ; Move platform down 5mm
M565 Z-1
G29 ; Bed Check - Z-Offset

I also tried this start gcode:
G21; set mm units
G90; set abs. coords
G28 X0 Y0; home x and y
G29; probe bed
G92 E0; reset extrusion dist

Extrude temp is 250, bed temp is 90 (I've tried as high as 110 with no difference on adhesion). I'm using Aquanet hair spray on the bed and the ABS that came with the Press.

If I call M851, the returned Z-Offset is 4.10. Running G29 gets the following probe returns, but I don't get a Z-Offset value I can use:
00:28:38.040 : Bed x: 30.00 y: 170.00 z: 3.29
00:28:40.118 : Bed x: 100.00 y: 170.00 z: 3.45
00:28:42.255 : Bed x: 170.00 y: 170.00 z: 3.33
00:28:44.650 : Bed x: 170.00 y: 100.00 z: 1.90
00:28:46.735 : Bed x: 100.00 y: 100.00 z: 2.04
00:28:48.875 : Bed x: 30.00 y: 100.00 z: 1.91
00:28:51.210 : Bed x: 30.00 y: 30.00 z: 0.78
00:28:53.292 : Bed x: 100.00 y: 30.00 z: 0.94
00:28:55.439 : Bed x: 170.00 y: 30.00 z: 0.74
00:28:55.452 : Eqn coefficients: a: -0.00 b: 0.02 d: 0.23
planeNormal x: 0.00 y: -0.02 z: 1.00

Appreciate any assistance! This has been driving me crazy.

The bed seems as stable as could be expected for a cantilevered mount. Thanks for the clarification on the Z-offset. Based on the behavior I've noticed then could the auto-leveling be the issue? Does auto-leveling occur when the raft or brim is printed? That's where I see the biggest gap between printing at the rear of the bed and printing at the front. When it's trying to print toward the front there is a good 5-6 mm gap between the nozzle and bed, but that gap closes as the nozzle moves toward the rear and I get better adhesion on the first layer.

How did you fix it?

Well to be fair I have somehow that problem and this guy gave me the solution:

mwille wrote:
The problem is in your starting G code.  You cannot have G28 after the G29 or it will reset the bed leveling data.