diff --git a/backend/src/main/java/com/printcalculator/controller/QuoteSessionController.java b/backend/src/main/java/com/printcalculator/controller/QuoteSessionController.java
index 50a6329..58ccb50 100644
--- a/backend/src/main/java/com/printcalculator/controller/QuoteSessionController.java
+++ b/backend/src/main/java/com/printcalculator/controller/QuoteSessionController.java
@@ -296,9 +296,7 @@ public class QuoteSessionController {
             return variant;
         }
 
-        String requestedMaterialCode = settings.getMaterial() != null
-                ? settings.getMaterial().trim().toUpperCase()
-                : "PLA";
+        String requestedMaterialCode = normalizeRequestedMaterialCode(settings.getMaterial());
 
         FilamentMaterialType materialType = materialRepo.findByMaterialCode(requestedMaterialCode)
                 .orElseGet(() -> materialRepo.findByMaterialCode("PLA")
@@ -316,6 +314,18 @@ public class QuoteSessionController {
                 .orElseThrow(() -> new RuntimeException("No active variant for material: " + requestedMaterialCode));
     }
 
+    private String normalizeRequestedMaterialCode(String value) {
+        if (value == null || value.isBlank()) {
+            return "PLA";
+        }
+
+        return value.trim()
+                .toUpperCase(Locale.ROOT)
+                .replace('_', ' ')
+                .replace('-', ' ')
+                .replaceAll("\\s+", " ");
+    }
+
     // 3. Update Line Item
     @PatchMapping("/line-items/{lineItemId}")
     @Transactional
diff --git a/backend/src/main/java/com/printcalculator/dto/PrintSettingsDto.java b/backend/src/main/java/com/printcalculator/dto/PrintSettingsDto.java
index 5c56ced..e01cfc6 100644
--- a/backend/src/main/java/com/printcalculator/dto/PrintSettingsDto.java
+++ b/backend/src/main/java/com/printcalculator/dto/PrintSettingsDto.java
@@ -8,7 +8,7 @@ public class PrintSettingsDto {
     private String complexityMode;
     
     // Common
-    private String material; // e.g. "PLA", "PETG"
+    private String material; // e.g. "PLA", "PLA TOUGH", "PETG"
     private String color;    // e.g. "White", "#FFFFFF"
     private Long filamentVariantId;
     private Long printerMachineId;
diff --git a/backend/src/main/java/com/printcalculator/service/OrcaProfileResolver.java b/backend/src/main/java/com/printcalculator/service/OrcaProfileResolver.java
index 26f0d88..b1f35dd 100644
--- a/backend/src/main/java/com/printcalculator/service/OrcaProfileResolver.java
+++ b/backend/src/main/java/com/printcalculator/service/OrcaProfileResolver.java
@@ -116,6 +116,7 @@ public class OrcaProfileResolver {
                 : "PLA";
 
         return switch (materialCode) {
+            case "PLA TOUGH" -> "Bambu PLA Tough @BBL A1";
             case "PETG" -> "Generic PETG";
             case "TPU" -> "Generic TPU";
             case "PC" -> "Generic PC";
diff --git a/backend/src/main/java/com/printcalculator/service/ProfileManager.java b/backend/src/main/java/com/printcalculator/service/ProfileManager.java
index 3737d43..67eee52 100644
--- a/backend/src/main/java/com/printcalculator/service/ProfileManager.java
+++ b/backend/src/main/java/com/printcalculator/service/ProfileManager.java
@@ -46,6 +46,7 @@ public class ProfileManager {
         
         // Material Aliases
         profileAliases.put("pla_basic", "Bambu PLA Basic @BBL A1");
+        profileAliases.put("pla_tough", "Bambu PLA Tough @BBL A1");
         profileAliases.put("petg_basic", "Bambu PETG Basic @BBL A1");
         profileAliases.put("tpu_95a", "Bambu TPU 95A @BBL A1");
         
diff --git a/backend/src/main/java/com/printcalculator/service/QuoteCalculator.java b/backend/src/main/java/com/printcalculator/service/QuoteCalculator.java
index 4dc4f82..5b8dbdf 100644
--- a/backend/src/main/java/com/printcalculator/service/QuoteCalculator.java
+++ b/backend/src/main/java/com/printcalculator/service/QuoteCalculator.java
@@ -175,6 +175,7 @@ public class QuoteCalculator {
 
     private String detectMaterialCode(String profileName) {
         String lower = profileName.toLowerCase();
+        if (lower.contains("pla tough") || lower.contains("pla_tough")) return "PLA TOUGH";
         if (lower.contains("petg")) return "PETG";
         if (lower.contains("tpu")) return "TPU";
         if (lower.contains("abs")) return "ABS";
diff --git a/db.sql b/db.sql
index ee9422d..8b1fe79 100644
--- a/db.sql
+++ b/db.sql
@@ -285,6 +285,7 @@ insert into filament_material_type (material_code,
                                     is_technical,
                                     technical_type_label)
 values ('PLA', false, false, null),
+       ('PLA TOUGH', false, false, null),
        ('PETG', false, false, null),
        ('TPU', true, false, null),
        ('PC', false, true, 'engineering'),
@@ -355,6 +356,37 @@ on conflict (filament_material_type_id, variant_display_name) do update
         is_active       = excluded.is_active;
 
 -- Varianti base per materiali principali del calcolatore
+with mat as (select filament_material_type_id
+             from filament_material_type
+             where material_code = 'PLA TOUGH')
+insert
+into filament_variant (filament_material_type_id, variant_display_name, color_name, color_hex, finish_type, brand,
+                       is_matte, is_special, cost_chf_per_kg, stock_spools, spool_net_kg, is_active)
+select mat.filament_material_type_id,
+       'PLA Tough Nero',
+       'Nero',
+       '#1A1A1A',
+       'GLOSSY',
+       'Bambu',
+       false,
+       false,
+       18.00,
+       1.000,
+       1.000,
+       true
+from mat
+on conflict (filament_material_type_id, variant_display_name) do update
+    set color_name      = excluded.color_name,
+        color_hex       = excluded.color_hex,
+        finish_type     = excluded.finish_type,
+        brand           = excluded.brand,
+        is_matte        = excluded.is_matte,
+        is_special      = excluded.is_special,
+        cost_chf_per_kg = excluded.cost_chf_per_kg,
+        stock_spools    = excluded.stock_spools,
+        spool_net_kg    = excluded.spool_net_kg,
+        is_active       = excluded.is_active;
+
 with mat as (select filament_material_type_id
              from filament_material_type
              where material_code = 'PETG')
@@ -491,13 +523,14 @@ with p as (select printer_machine_profile_id
              and pmp.nozzle_diameter_mm = 0.40::numeric),
      m as (select filament_material_type_id, material_code
            from filament_material_type
-           where material_code in ('PLA', 'PETG', 'TPU', 'PC'))
+           where material_code in ('PLA', 'PLA TOUGH', 'PETG', 'TPU', 'PC'))
 insert
 into material_orca_profile_map (printer_machine_profile_id, filament_material_type_id, orca_filament_profile_name, is_active)
 select p.printer_machine_profile_id,
        m.filament_material_type_id,
        case m.material_code
            when 'PLA' then 'Bambu PLA Basic @BBL A1'
+           when 'PLA TOUGH' then 'Bambu PLA Tough @BBL A1'
            when 'PETG' then 'Bambu PETG Basic @BBL A1'
            when 'TPU' then 'Bambu TPU 95A @BBL A1'
            when 'PC' then 'Generic PC @BBL A1'
diff --git a/frontend/src/app/features/admin/pages/admin-filament-stock.component.html b/frontend/src/app/features/admin/pages/admin-filament-stock.component.html
index 051e71d..d4dfd8d 100644
--- a/frontend/src/app/features/admin/pages/admin-filament-stock.component.html
+++ b/frontend/src/app/features/admin/pages/admin-filament-stock.component.html
@@ -316,7 +316,7 @@
 <div class="dialog-backdrop" *ngIf="variantToDelete" (click)="closeDeleteVariantDialog()"></div>
 <div class="confirm-dialog" *ngIf="variantToDelete">
   <h4>Sei sicuro?</h4>
-  <p>Vuoi eliminare la variante <strong>{{ variantToDelete?.variantDisplayName }}</strong>?</p>
+  <p>Vuoi eliminare la variante <strong>{{ variantToDelete.variantDisplayName }}</strong>?</p>
   <p class="muted">L'operazione non è reversibile.</p>
   <div class="dialog-actions">
     <button type="button" class="btn-secondary" (click)="closeDeleteVariantDialog()">Annulla</button>