Crazy3DPrint CZ-300 Configuration

thingiverse

My machine dont have the option to save settings in the menus (latest Firmware "Marlin 1.1.0 rc7 v12" from 2020-06-03) if i tried to save using M500 from terminal i got an file open error \sys\m_cfg.g so i created this on my SD card.. i now get rid of the error messages but it still does not save to EEPROM (if there is one) i would recommend anyone to change the bed leveling-nuts to any wheel 40 mm in diameter.. i scaled down the first i found. You can have them biger, but think about the thicknes.. you dont want it to colide on the left aluminium slidebar .. 4.5mm thickness would clear it! My first testprint failed. it over extruded severly. find your factory setting using command M503 in Terminal (Pronterface) look for the steps per unit setting: --- M503: echo:Steps per unit: echo: M92 X80.00 Y80.00 Z4000.00 E192.00 echo:Maximum feedrates (mm/s): echo: M203 X300.00 Y300.00 Z5.00 E300.00 echo:Maximum Acceleration (mm/s2): echo: M201 X90000 Y90000 Z1000 E100000 echo:Accelerations: P=printing, R=rM204 P3000.00 R0.00 T3000.00 echo:Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms)), Z=maximum Z jerk (mm/s), E=maximum E jerk (mm/s) echo: M205 S0.00 T0.00 B20000 X20.00 Z0.40 E5.00 echo:Home offset (mm) echo: M206 X0.00 Y0.00 Z0.00 Mesh bed leveling: echo: M420 S0 X2 Y2 echo: G29 S3 X1 Y1 Z0.00000 echo: G29 S3 X2 Y1 Z0.00000 echo: G29 S3 X1 Y2 Z0.00000 echo: G29 S3 X2 Y2 Z0.00000 echo:Material heatup parameters: echo: M145 S0 H200 B70 F0 echo: M145 S: echo: M301 P42.61 I5.70 D79.58 echo:Retract: S=Length (mm) F:Speed (mm/m) Z: ZLift (mm) echo: M207 S3.00 F2700.00 Z0.00 echo:Recover: S=Extra length (mm) F:Speed (mm/m) echo: M208 S0.00 F480.00 echo:Auto-Retract: S=0 to disable, 1 to interpret extment settings: Disabled echo: M200 D3.00 echo: M200 D0 ok --- Mine was "M92 E192.00" i extruded 100mm.. (G1 E100 F100 ) measured and found it really extruded about 104mm (measured with an ruler) 192x100 gives 19200 steps.. 19200/104 is about 184.62.. M92 E184.62 M500 would have fixed this on an normal printer.. but since you cant save to eeprom you have to ether set this in the startcode of your slicer or somewere else easy to execute.. i created an "0.loadsettings.gcode" on my SD card i then tried to extrude a longer amount to get an more exact mesurement i decided 250mm since my ruler is 300mm . i currently use M92 E186 in my "0.load.settings.gcode". You could also tune the feedrate via menu "Tune" while printing. Last option is to include it in your start-gcode.. (you might have several printer and reuse the gcode)