Steel City 06
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
Probably bigger fish to fry anyways
1858 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
The nozzle and hotend warp is something else entirely, and I'll definitely add that as well
1858 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
Perhaps a way to automate this and reduce the required soak time for the gantry would be to auto-home once heaters are on and go to that location, and then auto-re-home once heat soak is achieved. I have noticed that as soon as the beacon temperature is stable, the gantry deflection does not seem to increase. Hence beacon temperature appears to be a good proxy for gantry temperature
1858 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
I have also learned that Z and Z-tolt must be rehomed once the chamber and bed are at temp
1858 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
I'll definitely give that nozzle soak a shot
1858 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
I generally turn on the heaters, and then immediately home and manually go to that location so it can soak while the bed and chamber heat up. That works well except that the gantry would go to the back and high off the bed during nozzle warm-up (or cool down for probing temperature) which would cause it to cool and warp upwards, and then re-warp once the print started
1858 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
I assume that's the line you recommended everyone add to the printer.cfg? I have not added that as I basically do that manually
1858 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
Didn't fix the issue but definitely made it not nearly as bad
1858 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
[gcode_macro RatOS]
variable_start_print_park_in: "center" # back|front|center|primeblob = gantry parking position before the print starts ##default = back. Changed for gantry heatsoak.
# primeblob will park directly over the primeblob xy position at z3
variable_start_print_park_z_height: 5 # float = toolhead parking z-position before the print starts ##default = 50. Changed for gantry heatsoak.
variable_end_print_park_in: "back" # back|front|center = gantry parking position after the print has finished
variable_pause_print_park_in: "back" # back|front|center = gantry parking position if the print has paused
variable_end_print_park_z_hop: 20 # float = toolhead z-hop after the print has finished
1858 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
Posted this in the high temp chat a few days ago but recently came across this thread, which is probably more relevant:
Unrelated, but for anyone who has first layer problems, make sure to change your toolhead park position to center and 5mm height or less rather than the default. The default allows the gantry to cool too much which will cause your z to change constantly as it warms up
1858 replies