diff --git a/db/migrations/20261023181637_add_support_weight_to_work_sheet_mescole.php b/db/migrations/20261023181637_add_support_weight_to_work_sheet_mescole.php
new file mode 100644
index 00000000..40749cd5
--- /dev/null
+++ b/db/migrations/20261023181637_add_support_weight_to_work_sheet_mescole.php
@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+use Phinx\Migration\AbstractMigration;
+
+final class AddSupportWeightToWorkSheetMescole extends AbstractMigration
+{
+    public function change(): void
+    {
+        $this->table('work_sheet_mescole')
+            ->addColumn('support_weight_g_m', 'decimal', [
+                'precision' => 10,
+                'scale'     => 2,
+                'null'      => true,
+                'default'   => null,
+                'after'     => 'mix_weight_g_m',
+                'comment'   => 'Peso metro sostegno mescola (g/m)',
+            ])
+            ->update();
+    }
+}
diff --git a/public/userarea/manage-worksheet.php b/public/userarea/manage-worksheet.php
index bf4fae8b..c91b070f 100644
--- a/public/userarea/manage-worksheet.php
+++ b/public/userarea/manage-worksheet.php
@@ -242,6 +242,9 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['ajax']) && $_POST['aj
             if ($pos <= 0) $pos = 1;
 
             $mix_weight = $_POST['mix_weight_g_m'] !== '' ? (float)$_POST['mix_weight_g_m'] : null;
+            $support_weight = ($_POST['support_weight_g_m'] ?? '') !== ''
+                ? (float)str_replace(',', '.', $_POST['support_weight_g_m'])
+                : null;
             $density    = trim($_POST['required_density'] ?? '');
             $hardness   = trim($_POST['required_hardness_shore_a'] ?? '');
 
@@ -255,6 +258,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['ajax']) && $_POST['aj
                     UPDATE work_sheet_mescole SET
                         idmescola = ?,
                         mix_weight_g_m = ?,
+                        support_weight_g_m = ?,
                         required_density = ?,
                         required_hardness_shore_a = ?,
                         lubrication_type = ?,
@@ -263,7 +267,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['ajax']) && $_POST['aj
                 ");
                 $stmt->execute([
                     $idmescola,
-                    $mix_weight,
                     $density !== '' ? $density : null,
                     $hardness !== '' ? $hardness : null,
                     $lub_type,
@@ -291,16 +294,18 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['ajax']) && $_POST['aj
                 INSERT INTO work_sheet_mescole
                 (
                     worksheet_id, idmescola, mix_position, mix_weight_g_m,
+                    support_weight_g_m,
                     required_density, required_hardness_shore_a,
                     lubrication_type, lubrication_notes
                 )
-                VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
             ");
             $stmt->execute([
                 $worksheet_id,
                 $idmescola,
                 $pos,
                 $mix_weight,
+                $support_weight,
                 $density !== '' ? $density : null,
                 $hardness !== '' ? $hardness : null,
                 $lub_type,
@@ -1389,6 +1394,7 @@ $isEdit = ($worksheet_id > 0);
                                                     <th style="width:70px;">Pos</th>
                                                     <th>Mescola</th>
                                                     <th style="width:120px;">Peso (g/m)</th>
+                                                    <th style="width:120px;">Sostegno (g/m)</th>
                                                     <th style="width:140px;">Densità</th>
                                                     <th style="width:150px;">Durezza</th>
                                                     <th style="width:120px;">Lubr.</th>
@@ -1406,6 +1412,7 @@ $isEdit = ($worksheet_id > 0);
                                                             <?php endif; ?>
                                                         </td>
                                                         <td><?= h($r['mix_weight_g_m'] ?? '-') ?></td>
+                                                        <td><?= h($r['support_weight_g_m'] ?? '-') ?></td>
                                                         <td><?= h($r['required_density'] ?? '-') ?></td>
                                                         <td><?= h($r['required_hardness_shore_a'] ?? '-') ?></td>
                                                         <td><?= h($r['lubrication_type'] ?? '-') ?></td>
@@ -1456,7 +1463,7 @@ $isEdit = ($worksheet_id > 0);
                         <input type="hidden" name="mix_position" id="mix_position" value="">
 
                         <div class="row g-3">
-                            <div class="col-lg-8">
+                            <div class="col-lg-6">
                                 <label class="form-label">Mescola *</label>
                                 <select class="form-select" name="idmescola" id="idmescola" required>
                                     <option value="">-- Seleziona --</option>
@@ -1468,11 +1475,16 @@ $isEdit = ($worksheet_id > 0);
                                 </select>
                             </div>
 
-                            <div class="col-lg-4">
+                            <div class="col-lg-3 col-md-6">
                                 <label class="form-label">Peso metro mescola (g/m)</label>
                                 <input type="number" step="0.01" class="form-control" name="mix_weight_g_m" id="mix_weight_g_m">
                             </div>
 
+                            <div class="col-lg-3 col-md-6">
+                                <label class="form-label">Sostegno mescola (g/m)</label>
+                                <input type="number" step="0.01" class="form-control" name="support_weight_g_m" id="support_weight_g_m">
+                            </div>
+
                             <div class="col-lg-4">
                                 <label class="form-label">Densità richiesta</label>
                                 <input type="text" class="form-control" name="required_density" id="required_density" placeholder="es. 1,22 +/- 0,03">
@@ -1708,6 +1720,7 @@ $isEdit = ($worksheet_id > 0);
                 $('#idmescola').val(row.idmescola).trigger('change');
 
                 $('#mix_weight_g_m').val(row.mix_weight_g_m ?? '');
+                $('#support_weight_g_m').val(row.support_weight_g_m ?? '');
                 $('#required_density').val(row.required_density ?? '');
                 $('#required_hardness_shore_a').val(row.required_hardness_shore_a ?? '');
                 $('#lubrication_type').val(row.lubrication_type ?? '');
@@ -1961,6 +1974,7 @@ $isEdit = ($worksheet_id > 0);
                         '<td><div class="fw-bold">' + nome + '</div>' +
                         '<div class="text-muted small">dal file: ' + (m.raw || '') + '</div></td>' +
                         '<td>' + (m.mix_weight_g_m ?? '-') + '</td>' +
+                        '<td>' + (m.support_weight_g_m ?? '-') + '</td>' +
                         '<td>' + (m.required_density ?? '-') + '</td>' +
                         '<td>' + (m.required_hardness_shore_a ?? '-') + '</td>' +
                         '<td>' + (m.lubrication_type ?? '-') + '</td>' +
@@ -2063,6 +2077,7 @@ $isEdit = ($worksheet_id > 0);
                         worksheet_id: newId,
                         idmescola: m.idmescola,
                         mix_weight_g_m: m.mix_weight_g_m ?? '',
+                        support_weight_g_m: m.support_weight_g_m ?? '',
                         required_density: m.required_density ?? '',
                         required_hardness_shore_a: m.required_hardness_shore_a ?? '',
                         lubrication_type: m.lubrication_type ?? '',
@@ -2110,6 +2125,7 @@ $isEdit = ($worksheet_id > 0);
                         $('#mixRowId').val(0);
                         $('#mixWorksheetId').val(newId);
                         $('#mix_weight_g_m').val(m.mix_weight_g_m ?? '');
+                        $('#support_weight_g_m').val(m.support_weight_g_m ?? '');
                         $('#required_density').val(m.required_density ?? '');
                         $('#required_hardness_shore_a').val(m.required_hardness_shore_a ?? '');
                         $('#lubrication_type').val(m.lubrication_type ?? '');
diff --git a/public/userarea/worksheets.php b/public/userarea/worksheets.php
index f2559622..25d57590 100644
--- a/public/userarea/worksheets.php
+++ b/public/userarea/worksheets.php
@@ -204,12 +204,13 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['ajax']) && $_POST['aj
 
             $newWorksheetId = (int)$pdo->lastInsertId();
 
-            // Duplica le mescole collegate
+                    // Duplica le mescole collegate
             $stmtMixes = $pdo->prepare("
                 SELECT
                     idmescola,
                     mix_position,
                     mix_weight_g_m,
+                    support_weight_g_m,
                     required_density,
                     required_hardness_shore_a,
                     lubrication_type,
@@ -228,11 +229,12 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['ajax']) && $_POST['aj
                         idmescola,
                         mix_position,
                         mix_weight_g_m,
+                        support_weight_g_m,
                         required_density,
                         required_hardness_shore_a,
                         lubrication_type,
                         lubrication_notes
-                    ) VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+                    ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
                 ");
 
                 foreach ($mixRows as $mix) {
@@ -241,6 +243,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['ajax']) && $_POST['aj
                         $mix['idmescola'],
                         $mix['mix_position'],
                         $mix['mix_weight_g_m'],
+                        $mix['support_weight_g_m'],
                         $mix['required_density'],
                         $mix['required_hardness_shore_a'],
                         $mix['lubrication_type'],