Hey all,
My printer is completed and I've been doing some dry runs (waiting on filament to arrive). After speaking with a friend that has also built Prusa Mendels, he suggested if everything looks correct the only thing I should do is slow the print speed down when first starting out. Right now the X/Y seems to shake vigorously when doing infill. So my question is what should I set my movement settings to in order to slow the print down? Is this arbitrary because each machine is different? My current configuration for movement and acceleration is copied below. Thanks for your help!
Prusa Mendel
Ramps 1.4
Arduino AT Mega 2560
Pronterface
//-----------------------------------------------------------------------
//// MOVEMENT SETTINGS
//-----------------------------------------------------------------------
const int NUM_AXIS = 4; // The axis order in all axis related arrays is X, Y, Z, E
#define _MAX_FEEDRATE {350, 350, 2, 45} // (mm/sec)
#define _HOMING_FEEDRATE {1200,1200,120} // (mm/min) !!
#define _AXIS_RELATIVE_MODES {false, false, false, false}
#define MAX_STEP_FREQUENCY 30000 // Max step frequency
//For the retract (negative Extruder) move this maxiumum Limit of Feedrate is used
//The next positive Extruder move use also this Limit,
//then for the next (second after retract) move the original Maximum (_MAX_FEEDRATE) Limit is used
#define MAX_RETRACT_FEEDRATE 100 //mm/sec
//-----------------------------------------------------------------------
//// Acceleration settings
//-----------------------------------------------------------------------
// X, Y, Z, E maximum start speed for accelerated moves. E default values are good for skeinforge 40+, for older versions raise them a lot.
#define _ACCELERATION 1000 // Axis Normal acceleration mm/s^2
#define _RETRACT_ACCELERATION 2000 // Extruder Normal acceleration mm/s^2
#define _MAX_XY_JERK 20.0
#define _MAX_Z_JERK 0.4
#define _MAX_E_JERK 5.0 // (mm/sec)
//#define _MAX_START_SPEED_UNITS_PER_SECOND {25.0,25.0,0.2,10.0}
#define _MAX_ACCELERATION_UNITS_PER_SQ_SECOND {5000,5000,50,5000} // X, Y, Z and E max acceleration in mm/s^2 for printing moves or retracts
My printer is completed and I've been doing some dry runs (waiting on filament to arrive). After speaking with a friend that has also built Prusa Mendels, he suggested if everything looks correct the only thing I should do is slow the print speed down when first starting out. Right now the X/Y seems to shake vigorously when doing infill. So my question is what should I set my movement settings to in order to slow the print down? Is this arbitrary because each machine is different? My current configuration for movement and acceleration is copied below. Thanks for your help!
Prusa Mendel
Ramps 1.4
Arduino AT Mega 2560
Pronterface
//-----------------------------------------------------------------------
//// MOVEMENT SETTINGS
//-----------------------------------------------------------------------
const int NUM_AXIS = 4; // The axis order in all axis related arrays is X, Y, Z, E
#define _MAX_FEEDRATE {350, 350, 2, 45} // (mm/sec)
#define _HOMING_FEEDRATE {1200,1200,120} // (mm/min) !!
#define _AXIS_RELATIVE_MODES {false, false, false, false}
#define MAX_STEP_FREQUENCY 30000 // Max step frequency
//For the retract (negative Extruder) move this maxiumum Limit of Feedrate is used
//The next positive Extruder move use also this Limit,
//then for the next (second after retract) move the original Maximum (_MAX_FEEDRATE) Limit is used
#define MAX_RETRACT_FEEDRATE 100 //mm/sec
//-----------------------------------------------------------------------
//// Acceleration settings
//-----------------------------------------------------------------------
// X, Y, Z, E maximum start speed for accelerated moves. E default values are good for skeinforge 40+, for older versions raise them a lot.
#define _ACCELERATION 1000 // Axis Normal acceleration mm/s^2
#define _RETRACT_ACCELERATION 2000 // Extruder Normal acceleration mm/s^2
#define _MAX_XY_JERK 20.0
#define _MAX_Z_JERK 0.4
#define _MAX_E_JERK 5.0 // (mm/sec)
//#define _MAX_START_SPEED_UNITS_PER_SECOND {25.0,25.0,0.2,10.0}
#define _MAX_ACCELERATION_UNITS_PER_SQ_SECOND {5000,5000,50,5000} // X, Y, Z and E max acceleration in mm/s^2 for printing moves or retracts