maikgemmel
RRCRat Rig Community [Unofficial]
•Created by ShadowViper on 10/22/2024 in #fix-my-printer
Nozzle gets closer to the bed every time during first layer (worse at higher temps).
small update to my last post: i know found out how to set that wished timer before printing. simply added "variable_bed_heat_soak_time: 0
variable_hotend_heat_soak_time: 600" into my printer.cfg and now he waits 10min before he starts printing. and what shall i say? he does that. what else? he prints a perfect first layer now! btw: i print fiberon pet-cf17 at 280 deg celsius and wondered if he does upscale his measured nozzle expansion value between 150-250 deg celsius and yes, he does. printered measured 0.62 and because i print at 280 he goes up to 0.81. NICE work! but because i still dont get the thing with save_zoffset and all this stuff i still stay at setting my z-offset in filament startcode. i'm done, it works. hopefully you all will get it working now too.
19 replies
RRCRat Rig Community [Unofficial]
•Created by ShadowViper on 10/22/2024 in #fix-my-printer
Nozzle gets closer to the bed every time during first layer (worse at higher temps).
i had the exact same issue. when i take a look on ratos variables, i can clearly see my nozzle thermal expansion compensation (toolhead0 0.0628mm, toolhead1 0.08mm) and while starting a print it shows me that this expansion compensation is active. my z-offset is so automatically at 0.063mm. well, every start i needed to add about 0.05-0.07mm to get more air while first layer runs and got really pissed off.
now what to do: in slicer add "SET_GCODE_OFFSET Z_ADJUST=+0.05" (or how much you would think to give extra distance) to your start code and send your print-file to the printer. after the printer got the file and starts doing all his bed mesh calibration routine, simply pause your print! the printer will do his full routine to get started and right after that primeblob (i personally disabled it) he will then go to park position and waits for your resume. wait for about 3 to 5min and then resume your print. your nozzle will now have his full expansion and the first layer will get perfect completely. try it out! spend several days on it to check what is happening. now it works. i would wish to set a timer into start config for 300sec right before he wants to start but i'm to dumb for that by now. maybe someone can help here with that??
19 replies