diff --git a/buildroot/bin/mftest b/buildroot/bin/mftest
index e586b0aae3..b6f78e4f42 100755
--- a/buildroot/bin/mftest
+++ b/buildroot/bin/mftest
@@ -41,7 +41,6 @@ env shortcuts: tree due esp lin lp8|lpc8 lp9|lpc9 m128 m256|mega stm|f1 f4 f7 s6
 TESTPATH=buildroot/tests
 
 STATE_FILE="./.pio/.mftestrc"
-SED=$(which gsed sed | head -n1)
 
 shopt -s extglob nocasematch
 
diff --git a/buildroot/bin/mfutil b/buildroot/bin/mfutil
index 1699dd9adf..e9ee57fb9e 100755
--- a/buildroot/bin/mfutil
+++ b/buildroot/bin/mfutil
@@ -4,11 +4,9 @@
 #
 
 # Check dependencies
-which curl 1>/dev/null 2>&1 || { echo "curl not found! Please install it."; exit ; }
-which git 1>/dev/null 2>&1 || { echo "git not found! Please install it."; exit ; }
-
-SED=$(which gsed sed | head -n1)
-[[ -z "$SED" ]] && { echo "No sed found, please install sed" ; exit 1 ; }
+which curl &>/dev/null || { echo "curl not found! Please install it."; exit 1 ; }
+which git  &>/dev/null || { echo "git not found! Please install it."; exit 1 ; }
+which sed  &>/dev/null || { echo "sed not found! Please install it."; exit 1 ; }
 
 OPEN=$( which gnome-open xdg-open open | head -n1 )
 
diff --git a/buildroot/bin/opt_disable b/buildroot/bin/opt_disable
index 0444e1b773..8b36bc1f34 100755
--- a/buildroot/bin/opt_disable
+++ b/buildroot/bin/opt_disable
@@ -3,13 +3,34 @@
 # exit on first failure
 set -e
 
-SED=$(which gsed sed | head -n1)
+# Get SED_CMD, SED_I, and the BSDSED flag
+. $(dirname $0)/opt_sed
 
 for opt in "$@" ; do
   DID=0 ; FOUND=0
-  for FN in Configuration Configuration_adv; do
-    "${SED}" -i "/^\(\s*\)\(#define\s\+${opt}\b\s\?\)\(\s\s\)\?/{s//\1\/\/\2/;h};\${x;/./{x;q0};x;q9}" Marlin/$FN.h && DID=1
-    ((DID||FOUND)) || { grep -E "^\s*//\s*#define\s+${opt}\b" Marlin/$FN.h >/dev/null && FOUND=1 ; }
+  for FN in Marlin/Configuration.h Marlin/Configuration_adv.h; do
+    if [[ $BSDSED ]]; then
+      # BSD sed version (macOS)
+      "${SED_CMD}" "${SED_I[@]}" \
+        "/^[[:space:]]*#define[[:space:]]+${opt}\b/{
+          s/^[[:space:]]*\(#define[[:space:]]+${opt}\b.*\)/\/\/\1/
+          h
+          \$b end
+        }
+        \$!b
+        :end
+        x
+        /./{ x; q0; }
+        x
+        q1" \
+        $FN && DID=1
+    else
+      # GNU sed version
+      "${SED_CMD}" "${SED_I[@]}" \
+        "/^\(\s*\)\(#define\s\+${opt}\b\s\?\)\(\s\s\)\?/{s//\1\/\/\2/;h};\${x;/./{x;q0};x;q1}" \
+        $FN && DID=1
+    fi
+    ((DID||FOUND)) || { grep -E "^\s*\/\/#define\s+${opt}\b" $FN >/dev/null && FOUND=1 ; }
   done
   ((DID||FOUND)) || (echo "ERROR: $(basename $0) Can't find ${opt}" >&2 && exit 9)
 done
diff --git a/buildroot/bin/opt_enable b/buildroot/bin/opt_enable
index f9be82cbd1..292b4952d7 100755
--- a/buildroot/bin/opt_enable
+++ b/buildroot/bin/opt_enable
@@ -3,13 +3,34 @@
 # exit on first failure
 set -e
 
-SED=$(which gsed sed | head -n1)
+# Get SED_CMD, SED_I, and the BSDSED flag
+. $(dirname $0)/opt_sed
 
 for opt in "$@" ; do
   DID=0 ; FOUND=0
-  for FN in Configuration Configuration_adv; do
-    "${SED}" -i "/^\(\s*\)\/\/\(\s*\)\(#define\s\+${opt}\b\)\( \?\)/{s//\1\2\3\4\4\4/;h};\${x;/./{x;q0};x;q9}" Marlin/$FN.h && DID=1
-    ((DID||FOUND)) || { grep -E "^\s*#define\s+${opt}\b" Marlin/$FN.h >/dev/null && FOUND=1 ; }
+  for FN in Marlin/Configuration.h Marlin/Configuration_adv.h; do
+    if [[ $BSDSED ]]; then
+      # BSD sed version (macOS)
+      "${SED_CMD}" "${SED_I[@]}" \
+        "/^[[:space:]]*\/\/[[:space:]]*#define[[:space:]]+${opt}\b/{
+          s/^[[:space:]]*\/\/[[:space:]]*\(#define[[:space:]]+${opt}\b\)[[:space:]]*/\1   /
+          h
+          \$b end
+        }
+        \$!b
+        :end
+        x
+        /./{ x; q0; }
+        x
+        q1" \
+        $FN && DID=1
+    else
+      # GNU sed version
+      "${SED_CMD}" "${SED_I[@]}" \
+        "/^\(\s*\)\/\/\(\s*\)\(#define\s\+${opt}\b\)\( \?\)/{s//\1\2\3\4\4\4/;h};\${x;/./{x;q0};x;q1}" \
+        $FN && DID=1
+    fi
+    ((DID||FOUND)) || { grep -E "^\s*#define\s+${opt}\b" $FN >/dev/null && FOUND=1 ; }
   done
   ((DID||FOUND)) || (echo "ERROR: $(basename $0) Can't find ${opt}" >&2 && exit 9)
 done
diff --git a/buildroot/bin/opt_find b/buildroot/bin/opt_find
index a7c8fd9d71..bab9da0e46 100755
--- a/buildroot/bin/opt_find
+++ b/buildroot/bin/opt_find
@@ -23,8 +23,8 @@ esac
 
 while [[ $# > 0 ]]; do
   DID=0
-  for FN in Configuration Configuration_adv; do
-    FOUND=$( grep -HEn "^\s*${COMM}#define\s+[A-Z0-9_]*${1}" "Marlin/$FN.h" 2>/dev/null )
+  for FN in Marlin/Configuration.h Marlin/Configuration_adv.h; do
+    FOUND=$( grep -HEn "^\s*${COMM}#define\s+[A-Z0-9_]*${1}" $FN 2>/dev/null )
     [[ -n "$FOUND" ]] && { echo "$FOUND" ; DID=1 ; }
   done
   ((DID)) || { echo "ERROR: ${MYNAME} - No ${TYPE}match for ${1}" ; exit 9; }
diff --git a/buildroot/bin/opt_sed b/buildroot/bin/opt_sed
new file mode 100755
index 0000000000..d6075add01
--- /dev/null
+++ b/buildroot/bin/opt_sed
@@ -0,0 +1,9 @@
+# Detect sed version
+SED_CMD="sed"
+SED_I=(-i)
+if command -v gsed >/dev/null 2>&1; then
+  SED_CMD="gsed"
+elif [[ "$(uname)" == "Darwin" ]]; then
+  SED_I=(-i '')
+  BSDSED=1
+fi
diff --git a/buildroot/bin/opt_set b/buildroot/bin/opt_set
index b9935512a4..d58cfc3d14 100755
--- a/buildroot/bin/opt_set
+++ b/buildroot/bin/opt_set
@@ -3,12 +3,33 @@
 # exit on first failure
 set -e
 
-SED=$(which gsed sed | head -n1)
+# Get SED_CMD, SED_I, and the BSDSED flag
+. $(dirname $0)/opt_sed
 
 while [[ $# > 1 ]]; do
   DID=0
-  for FN in Configuration Configuration_adv; do
-    "${SED}" -i "/^\(\s*\)\/*\s*\(#define\s\+${1}\b\) *\(.*\)$/{s//\1\2 ${2} \/\/ \3/;h};\${x;/./{x;q0};x;q9}" Marlin/$FN.h && DID=1
+  for FN in Marlin/Configuration.h Marlin/Configuration_adv.h; do
+    if [[ $BSDSED ]]; then
+      # BSD sed version (macOS)
+      $SED_CMD "${SED_I[@]}" \
+        "/^[[:space:]]*\/\{0,2\}[[:space:]]*#define[[:space:]]+${1}\b/{
+          s/^[[:space:]]*\/\{0,2\}[[:space:]]*\(#define[[:space:]]+${1}\b\)[[:space:]]*.*/\1 ${2} \/\/ &/
+          h
+          \$b end
+        }
+        \$!b
+        :end
+        x
+        /./{ x; q0; }
+        x
+        q1" \
+        $FN && DID=1
+    else
+      # GNU sed version
+      $SED_CMD "${SED_I[@]}" \
+        "/^\(\s*\)\/\{0,2\}\s*\(#define\s\+${1}\b\)\s*\(.*\)$/{s//\1\2 ${2} \/\/ \3/;h};\${x;/./{x;q0};x;q1}" \
+        $FN && DID=1
+    fi
   done
   ((DID)) ||
     eval "echo '#define ${1} ${2}' >>Marlin/Configuration.h" ||
diff --git a/buildroot/bin/pins_set b/buildroot/bin/pins_set
deleted file mode 100755
index 216eabc076..0000000000
--- a/buildroot/bin/pins_set
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/usr/bin/env bash
-
-IFS='/' read -r -a PINPATH <<< "$1"
-DIR=${PINPATH[0]}
-NAM=${PINPATH[1]}
-
-SED=$(which gsed sed | head -n1)
-
-shift
-while [[ $# > 1 ]]; do
-  PIN=$1 ; VAL=$2
-  FOUT="${DIR}/pins_${NAM}.h"
-  eval "${SED} -i '/^[[:blank:]]*\(\/\/\)*[[:blank:]]*\(#define \+${PIN}\b\).*$/{s//\2 ${VAL}/;h};\${x;/./{x;q0};x;q9}' Marlin/src/pins/${FOUT}" ||
-  (echo "ERROR: pins_set Can't find ${PIN} in ${FOUT}" >&2 && exit 9)
-  shift 2
-done
diff --git a/buildroot/share/git/mfhelp b/buildroot/share/git/mfhelp
index aff34b866f..cbdd6ec4ef 100755
--- a/buildroot/share/git/mfhelp
+++ b/buildroot/share/git/mfhelp
@@ -40,7 +40,6 @@ Modify Configuration.h / Configuration_adv.h:
 
 Modify pins files:
 
-  pins_set ............. Set the value of a pin in a pins file
   pinsformat.py ........ Python script to format pins files
 
 THIS
diff --git a/buildroot/share/git/mfprep b/buildroot/share/git/mfprep
index 7446895c6b..4554bdc441 100755
--- a/buildroot/share/git/mfprep
+++ b/buildroot/share/git/mfprep
@@ -9,7 +9,6 @@
 # so at every release be sure to create a dev- tag and publish it to origin.
 #
 
-SED=$(which gsed sed | head -n1)
 SELF=`basename "$0"`
 DRYRUN=0
 
diff --git a/buildroot/tests/DUE b/buildroot/tests/DUE
index 3c4876b44e..ca225d87dd 100755
--- a/buildroot/tests/DUE
+++ b/buildroot/tests/DUE
@@ -37,11 +37,10 @@ exec_test $1 $2 "RAMPS4DUE_EFB with ABL (Bilinear), ExtUI, S-Curve, many options
 # RADDS with BLTouch, ABL(B), 3 x Z auto-align
 #
 restore_configs
-opt_set MOTHERBOARD BOARD_RADDS Z_DRIVER_TYPE A4988 Z2_DRIVER_TYPE A4988 Z3_DRIVER_TYPE A4988
+opt_set MOTHERBOARD BOARD_RADDS Z_DRIVER_TYPE A4988 Z2_DRIVER_TYPE A4988 Z3_DRIVER_TYPE A4988 \
+        X_MAX_PIN -1 Y_MAX_PIN -1
 opt_enable ENDSTOPPULLUPS BLTOUCH AUTO_BED_LEVELING_BILINEAR \
            Z_STEPPER_AUTO_ALIGN Z_STEPPER_ALIGN_STEPPER_XY Z_SAFE_HOMING
-pins_set ramps/RAMPS X_MAX_PIN -1
-pins_set ramps/RAMPS Y_MAX_PIN -1
 exec_test $1 $2 "RADDS with ABL (Bilinear), Triple Z Axis, Z_STEPPER_AUTO_ALIGN, E_DUAL_STEPPER_DRIVERS" "$3"
 
 #
diff --git a/buildroot/tests/teensy35 b/buildroot/tests/teensy35
index c7830aeaac..0fd1c5820d 100755
--- a/buildroot/tests/teensy35
+++ b/buildroot/tests/teensy35
@@ -106,9 +106,8 @@ exec_test $1 $2 "Teensy 3.5/3.6 COREXZ | BACKLASH" "$3"
 # Enable Dual Z with Dual Z endstops
 #
 restore_configs
-opt_set MOTHERBOARD BOARD_TEENSY35_36 Z_DRIVER_TYPE A4988 Z2_DRIVER_TYPE A4988 Z2_MIN_PIN 2
+opt_set MOTHERBOARD BOARD_TEENSY35_36 Z_DRIVER_TYPE A4988 Z2_DRIVER_TYPE A4988 Z2_MIN_PIN 2 X_MAX_PIN -1
 opt_enable Z_MULTI_ENDSTOPS
-pins_set ramps/RAMPS X_MAX_PIN -1
 exec_test $1 $2 "Dual Z with Dual Z endstops" "$3"
 
 # Clean up
diff --git a/buildroot/tests/teensy41 b/buildroot/tests/teensy41
index 894abc15b9..fc50957b25 100755
--- a/buildroot/tests/teensy41
+++ b/buildroot/tests/teensy41
@@ -105,9 +105,8 @@ exec_test $1 $2 "Teensy 4.0/4.1 COREXZ" "$3"
 # Enable Dual Z with Dual Z endstops
 #
 restore_configs
-opt_set MOTHERBOARD BOARD_TEENSY41 Z_DRIVER_TYPE A4988 Z2_DRIVER_TYPE A4988 Z2_MIN_PIN 2
+opt_set MOTHERBOARD BOARD_TEENSY41 Z_DRIVER_TYPE A4988 Z2_DRIVER_TYPE A4988 Z2_MIN_PIN 2 X_MAX_PIN -1
 opt_enable Z_MULTI_ENDSTOPS
-pins_set ramps/RAMPS X_MAX_PIN -1
 exec_test $1 $2 "Dual Z with Dual Z endstops" "$3"
 
 # Clean up