diff --git a/Firmware/mesh_bed_calibration.cpp b/Firmware/mesh_bed_calibration.cpp
index 266733c8..c69b4da7 100644
--- a/Firmware/mesh_bed_calibration.cpp
+++ b/Firmware/mesh_bed_calibration.cpp
@@ -57,13 +57,36 @@ const float bed_skew_angle_extreme = (0.25f * M_PI / 180.f);
 
 #ifdef HEATBED_V2
 
-// Positions of the bed reference points in the machine coordinates, referenced to the P.I.N.D.A sensor.
-// The points are the following: center front, center right, center rear, center left.
+/**
+ * [0,0] bed print area point X coordinate in bed coordinates ver. 05d/24V
+ */
+#define BED_PRINT_ZERO_REF_X 2.f
+/**
+ * [0,0] bed print area point Y coordinate in bed coordinates ver. 05d/24V
+ */
+#define BED_PRINT_ZERO_REF_Y 9.4f
+
+/**
+ * @brief Positions of the bed reference points in print area coordinates. ver. 05d/24V
+ *
+ * Numeral constants are in bed coordinates, subtracting macro defined values converts it to print area coordinates.
+ *
+ * The points are the following:
+ * MK2: center front, center right, center rear, center left.
+ * MK25 and MK3: front left, front right, rear right, rear left
+ */
 const float bed_ref_points_4[] PROGMEM = {
-	13.f - BED_ZERO_REF_X,   10.4f - BED_ZERO_REF_Y,
-	221.f - BED_ZERO_REF_X,  10.4f - BED_ZERO_REF_Y,
-	221.f - BED_ZERO_REF_X, 202.4f - BED_ZERO_REF_Y,
-	13.f - BED_ZERO_REF_X, 202.4f - BED_ZERO_REF_Y
+	37.f - BED_PRINT_ZERO_REF_X - X_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_X,
+	18.4f - BED_PRINT_ZERO_REF_Y - Y_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_Y,
+
+	245.f - BED_PRINT_ZERO_REF_X - X_PROBE_OFFSET_FROM_EXTRUDER  - SHEET_PRINT_ZERO_REF_X,
+	18.4f - BED_PRINT_ZERO_REF_Y - Y_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_Y,
+
+	245.f - BED_PRINT_ZERO_REF_X - X_PROBE_OFFSET_FROM_EXTRUDER  - SHEET_PRINT_ZERO_REF_X,
+	210.4f - BED_PRINT_ZERO_REF_Y - Y_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_Y,
+
+	37.f - BED_PRINT_ZERO_REF_X - X_PROBE_OFFSET_FROM_EXTRUDER  - SHEET_PRINT_ZERO_REF_X,
+	210.4f - BED_PRINT_ZERO_REF_Y - Y_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_Y
 };
 
 const float bed_ref_points[] PROGMEM = {
diff --git a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
index d25526a0..48b9a565 100644
--- a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
@@ -76,7 +76,15 @@ const bool Z_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic o
 #define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E
 #define HOMING_FEEDRATE {3000, 3000, 800, 0}  // set the homing speeds (mm/min) // 3000 is also valid for stallGuard homing. Valid range: 2200 - 3000
 
-#define DEFAULT_Y_OFFSET    2.f // Offset of [0;0] point, when the printer is not calibrated
+//#define DEFAULT_Y_OFFSET    4.f // Default distance of Y_MIN_POS point from endstop, when the printer is not calibrated.
+/**
+ * [0,0] steel sheet print area point X coordinate in bed print area coordinates
+ */
+#define SHEET_PRINT_ZERO_REF_X 0.f
+/**
+ * [0,0] steel sheet print area point Y coordinate in bed print area coordinates
+ */
+#define SHEET_PRINT_ZERO_REF_Y -2.f
 
 #define DEFAULT_MAX_FEEDRATE          {200, 200, 12, 120}      // (mm/sec)   max feedrate (M203)
 #define DEFAULT_MAX_ACCELERATION      {1000, 1000, 200, 5000}  // (mm/sec^2) max acceleration (M201)
@@ -408,7 +416,7 @@ const bool Z_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic o
 #define MESH_HOME_Z_SEARCH 5 //Z lift for homing, mesh bed leveling etc.
 
 #define X_PROBE_OFFSET_FROM_EXTRUDER 23     // Z probe to nozzle X offset: -left  +right
-#define Y_PROBE_OFFSET_FROM_EXTRUDER 3     // Z probe to nozzle Y offset: -front +behind
+#define Y_PROBE_OFFSET_FROM_EXTRUDER 5     // Z probe to nozzle Y offset: -front +behind
 #define Z_PROBE_OFFSET_FROM_EXTRUDER -0.4  // Z probe to nozzle Z offset: -below (always!)
 #endif