shawn.m4
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Thanks

Feb 19, 2017 1:39 am

Thanks for the posting this. It helped a lot in getting my i3 Mk2 calibrated. I kept going back and forth with the stock V2 gcode. On occasion I found myself doing something similar with the first layer of the Prusa logo gcode on the SD card. This definitely helped get things calibrated and systematically going through things. Thanks.
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paul.d7
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Re: life adjust Z - my way

Feb 27, 2017 5:19 pm

Thank you so much !!! New to 3D printing, Assembled kit and was getting into trouble with poor adhesion, layer height, etc. This info would have saved a lot of time if it had been in the manual.

maarten.k
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Re: life adjust Z - my way

Mar 01, 2017 11:00 am

Thank you Jeff for this invaluable piece of Gcode, indeed much handier to get that perfect Z adjust.
I will follow your logic and try to leave it as is once I'm happy with it and look for adhesion problems / extrusion settings whenever a filament is not performing properly at first layer.

I did notice a slight difference in thickness between PETG and PLA, PLA being slightly thinker (a difference of 0,02 - 0,03) compared to PLA.
Would this be because of the PETG gripping the PEI surface more aggressively?
I'm not using a glue stick covered bed to test it but Joe's advice to use window cleaner when cleaning for PETG.

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JeffJordan
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Re: life adjust Z - my way

Mar 01, 2017 11:25 am

maarten.k wrote:...I did notice a slight difference in thickness between PETG and PLA, PLA being slightly thinker (a difference of 0,02 - 0,03) compared to PLA.
Would this be because of the PETG gripping the PEI surface more aggressively?
did you mean thicker or thinner ?
anyway: here i've noticed no difference between pla and petg (regarding the thickness). i can only imagine, that the viscosity of the filament might have an influence. and the viscosity itself is a function of the temperature at which you print. btw.: for my herz petg i use 255°C.
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maarten.k
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Re: life adjust Z - my way

Mar 01, 2017 11:42 am

JeffJordan wrote: did you mean thicker or thinner ?
anyway: here i've noticed no difference between pla and petg (regarding the thickness). i can only imagine, that the viscosity of the filament might have an influence. and the viscosity itself is a function of the temperature at which you print. btw.: for my herz petg i use 255°C.
The PETG prints a little thinner.
This was the one bought from the Prusa shop.
I'm using the stock settings of 230/85 for the first lauer and then 240/90.

tim.h3
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Re: life adjust Z - my way

Mar 02, 2017 2:58 am

Jeff, can you post your factory file for S3D?
Mostly I use filament that comes in at 1.71 mm and would like to make a version that works with that
I suppose I'd have to manually make the gcode changes you made as well.

Thanks!

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JeffJordan
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Re: life adjust Z - my way

Mar 02, 2017 9:25 am

tim.h3 wrote:Jeff, can you post your factory file for S3D?
Mostly I use filament that comes in at 1.71 mm and would like to make a version that works with that
I suppose I'd have to manually make the gcode changes you made as well.

Thanks!
:idea: i used the original prusa i3 mk2 RC4 factory file, that josef posted here at the forum. i'll attach it here, for your convenience:
Original Prusa i3 MK2 RC4.fff.zip
(3.16 KiB) Downloaded 106 times
btw.: this should be the same factory file the v2calibration.gcode was made by prusa.

when i look into the gcode file now, i can see a "; profileName,Original Prusa i3 MK2 RC4 (modified)" in line #6. but i can't remember that i really made changes that affect layer height, extrusion or width. i think i only fiddled around with the end script and the brim and maybe with the speed as well.

:arrow: but you can check every single parameter when you open the .gcode file with a text editor (lines 1 - 184).
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JeffJordan
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for your convenience...

Mar 03, 2017 6:43 pm

:idea: just added the G87 command inside the gcode, so you don't need to run the v2calibration.gcode anymore to get rid of the reminder to adjust the live z-adjustment level.
calibration_surface_PLA_75x75@200um_v4.zip
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nate.l
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Re: life adjust Z - my way

Mar 05, 2017 3:33 pm

Thanks so much for this, just to be clear, this new gcode can replace the V2calibration?

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JeffJordan
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Re: life adjust Z - my way

Mar 05, 2017 3:44 pm

:P i think so.
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