From 98a1cd7fe66fe25427223c064736ddc501df1368 Mon Sep 17 00:00:00 2001
From: Bassam Husain <bassam.husain@gmail.com>
Date: Sun, 2 Apr 2023 18:31:58 -0400
Subject: [PATCH] Purge_line macro adjusted to print at the front of the bed;
 printer agnostic. Print_end adjusted to use safer speed.

---
 cfgs/misc-macros.cfg | 36 +++++++++++++++++++++++++++++-------
 1 file changed, 29 insertions(+), 7 deletions(-)

diff --git a/cfgs/misc-macros.cfg b/cfgs/misc-macros.cfg
index 053e748..934314d 100644
--- a/cfgs/misc-macros.cfg
+++ b/cfgs/misc-macros.cfg
@@ -75,17 +75,32 @@ gcode:
     {% endif %}
 
 [gcode_macro PURGE_LINE]
-# https://github.com/JoeCat1207/V0.1-Purge-line-SuperSlicer/blob/main/Purgeline.txt
-# https://github.com/VoronDesign/Voron-Switchwire/blob/200cdae033c59ef81f67c4235469da7ca66d53a1/Firmware/skr_mini_e3_v2_config.cfg
 gcode:
     {% set PRE_PURGE_PRIME_LENGTH=printer["gcode_macro _globals"].pre_purge_prime_length|default(1.40)|float %}
     ADJUST_FILAMENT_SENSOR_STATUS ENABLE=1
-    G0 Y0 X0 F4000                         ; go to tongue of print bed
-    G1 Z0.4 F500.0                          ; move bed to nozzle
+
+    #   Get Boundaries
+    {% set max_x = printer.configfile.config["stepper_x"]["position_max"]|float %}
+    {% set max_y = printer.configfile.config["stepper_y"]["position_max"]|float %}
+    {% set max_z = printer.configfile.config["stepper_z"]["position_max"]|float %}
+    {% set extrudeAmount = 26.6 %}
+    {% set movementLength = 100 %}
+    {% set movementSpeed = 15 * 60 %}
+
+    #   Set safe speeds
+    {% set maxVelocity = printer.configfile.settings.printer.max_velocity|default(200)|int %}
+    {% set maxVelocityAdjusted =  (0.9 * maxVelocity * 60)|int  %}
+
     G92 E0.0                                ; reset extruder
+    G90                                     ; Absolute positioning
+    G0 X0 Y0 F{maxVelocityAdjusted}         ; move to purge position
+    G1 Z0.4 F500.0                          ; move to purge height
+    M83                                     ; Relative extrusion mode
     G1 E{PRE_PURGE_PRIME_LENGTH} F500       ; pre-purge prime LENGTH SHOULD MATCH YOUR PRINT_END RETRACT
-    G1 Y140 E35.0 F1200.0                   ; intro line 1
+    G1 X{movementLength} E{extrudeAmount} F{movementSpeed}       ; intro line 1
+    #G1 E-.5 F2100                                                                       # Retract
     G92 E0.0                                ; reset extruder
+    M82                                     ; Absolute extrusion mode
     G1 Z5.0                                 ; move nozzle to prevent scratch
 
 [gcode_macro CANCEL_PRINT]
@@ -125,11 +140,18 @@ gcode:
     ADJUST_FILAMENT_SENSOR_STATUS ENABLE=0
     CONDITIONAL_BEEP I=2 DUR=30 FREQ=8500                               ; NOTE Comment out this line to stop the beeps at the end of a print
     {% set PRE_PURGE_PRIME_LENGTH=printer["gcode_macro _globals"].pre_purge_prime_length|default(1.40)|float %}
+
     M400                                    ; wait for buffer to clear
     G92 E0                                  ; zero the extruder
     G1 E-{PRE_PURGE_PRIME_LENGTH} F400      ; retract filament
     G91                                     ; relative positioning
 
+    #   Set safe speeds
+    {% set zVelocity = printer.configfile.settings.printer.max_z_velocity|default(15)|int %}
+    {% set maxVelocity = printer.configfile.settings.printer.max_velocity|default(200)|int %}
+    {% set zVelocityAdjusted =  (0.95 * zVelocity * 60)|int  %}
+    {% set maxVelocityAdjusted =  (0.95 * maxVelocity * 60)|int  %}
+
     #   Get Boundaries
     {% set max_x = printer.configfile.config["stepper_x"]["position_max"]|float %}
     {% set max_y = printer.configfile.config["stepper_y"]["position_max"]|float %}
@@ -155,8 +177,8 @@ gcode:
         {% set z_safe = max_z - printer.toolhead.position.z %}
     {% endif %}
 
-    G0 Z{z_safe} F2000             ; move nozzle up
-    G0 X{x_safe} Y{y_safe} F9000   ; move nozzle to remove stringing
+    G0 Z{z_safe} F{zVelocityAdjusted}             ; move nozzle up
+    G0 X{x_safe} Y{y_safe} F{maxVelocityAdjusted}   ; move nozzle to remove stringing
     TURN_OFF_HEATERS
     M107                           ; turn off fan
     G90                            ; absolute positioning