diff --git a/src/main/java/net/knarcraft/blacksmith/command/PresetCommand.java b/src/main/java/net/knarcraft/blacksmith/command/PresetCommand.java
index 8dfa3d7..fd4b264 100644
--- a/src/main/java/net/knarcraft/blacksmith/command/PresetCommand.java
+++ b/src/main/java/net/knarcraft/blacksmith/command/PresetCommand.java
@@ -12,6 +12,7 @@ import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
 
 /**
  * The command for displaying which materials are contained in a preset
@@ -26,7 +27,7 @@ public class PresetCommand implements CommandExecutor {
         }
 
         String presetName = args[0].toUpperCase().replace('-', '_');
-        List<Material> includedMaterials;
+        Set<Material> includedMaterials;
 
         try {
             //Display the preset with the filter applied
diff --git a/src/main/java/net/knarcraft/blacksmith/command/blacksmith/BlackSmithConfigCommand.java b/src/main/java/net/knarcraft/blacksmith/command/blacksmith/BlackSmithConfigCommand.java
index cd897f2..576d95f 100644
--- a/src/main/java/net/knarcraft/blacksmith/command/blacksmith/BlackSmithConfigCommand.java
+++ b/src/main/java/net/knarcraft/blacksmith/command/blacksmith/BlackSmithConfigCommand.java
@@ -19,7 +19,7 @@ import org.bukkit.enchantments.Enchantment;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.List;
+import java.util.Set;
 
 /**
  * The command used for changing global blacksmith configuration options
@@ -215,7 +215,7 @@ public class BlackSmithConfigCommand implements CommandExecutor {
     private void updateAllMatchedPrices(@NotNull GlobalBlacksmithSettings settings,
                                         @NotNull BlacksmithSetting blacksmithSetting,
                                         @NotNull String materialName, double newPrice) {
-        List<Material> materials = ItemHelper.getWildcardMatch(materialName, false);
+        Set<Material> materials = ItemHelper.getWildcardMatch(materialName, false);
         for (Material material : materials) {
             if (blacksmithSetting == BlacksmithSetting.BASE_PRICE) {
                 settings.setBasePrice(material, newPrice);
diff --git a/src/main/java/net/knarcraft/blacksmith/config/SmithPreset.java b/src/main/java/net/knarcraft/blacksmith/config/SmithPreset.java
index e6fd9df..765896b 100644
--- a/src/main/java/net/knarcraft/blacksmith/config/SmithPreset.java
+++ b/src/main/java/net/knarcraft/blacksmith/config/SmithPreset.java
@@ -7,7 +7,10 @@ import org.bukkit.Tag;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
 import java.util.logging.Level;
 
@@ -41,6 +44,12 @@ public enum SmithPreset {
             SmithPresetFilter.AXE, SmithPresetFilter.HOE, SmithPresetFilter.SHOVEL, SmithPresetFilter.MISC});
 
     private final SmithPresetFilter[] filters;
+    private static final Map<SmithPreset, Set<String>> presetMaterialNames = new HashMap<>();
+    private static final Map<SmithPresetFilter, Set<String>> filterMaterialNames = new HashMap<>();
+    private static Set<Material> armor = null;
+    private static Set<Material> ranged = null;
+    private static Set<Material> weapons = null;
+    private static Set<Material> tools = null;
 
     /**
      * Instantiates a new smith preset
@@ -128,12 +137,27 @@ public enum SmithPreset {
             return "";
         }
 
-        //Return the list of materials included in the preset
-        List<String> materialNames;
-        if (filter != null) {
-            materialNames = preset.getMaterialNames(filter);
+        // Check if the preset result has been stored
+        Set<String> materialNames = null;
+        if (filter == null) {
+            if (presetMaterialNames.containsKey(preset)) {
+                materialNames = presetMaterialNames.get(preset);
+            }
         } else {
-            materialNames = preset.getMaterialNames();
+            if (filterMaterialNames.containsKey(filter)) {
+                materialNames = filterMaterialNames.get(filter);
+            }
+        }
+
+        //Return the list of materials included in the preset
+        if (materialNames == null) {
+            if (filter != null) {
+                materialNames = preset.getMaterialNames(filter);
+                filterMaterialNames.put(filter, materialNames);
+            } else {
+                materialNames = preset.getMaterialNames();
+                presetMaterialNames.put(preset, materialNames);
+            }
         }
         if (negated) {
             materialNames = negateMaterials(materialNames);
@@ -148,8 +172,8 @@ public enum SmithPreset {
      * @return <p>The materials included in this preset, filtered using the given filter</p>
      */
     @NotNull
-    public List<Material> getFilteredMaterials(SmithPresetFilter filter) {
-        List<Material> materials = new ArrayList<>(this.getMaterials());
+    public Set<Material> getFilteredMaterials(SmithPresetFilter filter) {
+        Set<Material> materials = new HashSet<>(this.getMaterials());
         materials.removeIf((item) -> !filter.isIncluded(item));
         return materials;
     }
@@ -160,7 +184,7 @@ public enum SmithPreset {
      * @return <p>All materials in this preset</p>
      */
     @NotNull
-    public List<Material> getMaterials() {
+    public Set<Material> getMaterials() {
         return switch (this) {
             case BLACKSMITH -> ItemHelper.getAllReforgeAbleMaterials();
             case WEAPON_SMITH -> getWeapons();
@@ -175,11 +199,13 @@ public enum SmithPreset {
      * @return <p>All ranged weapon materials</p>
      */
     @NotNull
-    private List<Material> getRanged() {
-        List<Material> ranged = new ArrayList<>();
-        ranged.add(Material.TRIDENT);
-        ranged.add(Material.BOW);
-        ranged.add(Material.CROSSBOW);
+    private Set<Material> getRanged() {
+        if (ranged == null) {
+            ranged = new HashSet<>();
+            ranged.add(Material.TRIDENT);
+            ranged.add(Material.BOW);
+            ranged.add(Material.CROSSBOW);
+        }
         return ranged;
     }
 
@@ -189,15 +215,17 @@ public enum SmithPreset {
      * @return <p>All tool materials</p>
      */
     @NotNull
-    private List<Material> getTools() {
-        List<Material> tools = new ArrayList<>();
-        tools.addAll(Tag.ITEMS_HOES.getValues());
-        tools.addAll(Tag.ITEMS_SHOVELS.getValues());
-        tools.addAll(Tag.ITEMS_AXES.getValues());
-        tools.addAll(Tag.ITEMS_PICKAXES.getValues());
-        tools.add(Material.FLINT_AND_STEEL);
-        tools.add(Material.FISHING_ROD);
-        tools.add(Material.SHEARS);
+    private Set<Material> getTools() {
+        if (tools == null) {
+            tools = new HashSet<>();
+            tools.addAll(Tag.ITEMS_HOES.getValues());
+            tools.addAll(Tag.ITEMS_SHOVELS.getValues());
+            tools.addAll(Tag.ITEMS_AXES.getValues());
+            tools.addAll(Tag.ITEMS_PICKAXES.getValues());
+            tools.add(Material.FLINT_AND_STEEL);
+            tools.add(Material.FISHING_ROD);
+            tools.add(Material.SHEARS);
+        }
         return tools;
     }
 
@@ -207,10 +235,12 @@ public enum SmithPreset {
      * @return <p>All weapon materials</p>
      */
     @NotNull
-    private List<Material> getWeapons() {
-        List<Material> weapons = new ArrayList<>(getSwords());
-        weapons.addAll(getRanged());
-        weapons.add(Material.SHIELD);
+    private Set<Material> getWeapons() {
+        if (weapons == null) {
+            weapons = new HashSet<>(getSwords());
+            weapons.addAll(getRanged());
+            weapons.add(Material.SHIELD);
+        }
         return weapons;
     }
 
@@ -230,13 +260,15 @@ public enum SmithPreset {
      * @return <p>All armor types</p>
      */
     @NotNull
-    private List<Material> getArmor() {
-        List<Material> armor = new ArrayList<>();
-        armor.addAll(getMaterialsEndingWith("HELMET"));
-        armor.addAll(getMaterialsEndingWith("CHESTPLATE"));
-        armor.addAll(getMaterialsEndingWith("LEGGINGS"));
-        armor.addAll(getMaterialsEndingWith("BOOTS"));
-        armor.add(Material.ELYTRA);
+    private Set<Material> getArmor() {
+        if (armor == null) {
+            armor = new HashSet<>();
+            armor.addAll(getMaterialsEndingWith("HELMET"));
+            armor.addAll(getMaterialsEndingWith("CHESTPLATE"));
+            armor.addAll(getMaterialsEndingWith("LEGGINGS"));
+            armor.addAll(getMaterialsEndingWith("BOOTS"));
+            armor.add(Material.ELYTRA);
+        }
         return armor;
     }
 
@@ -247,8 +279,8 @@ public enum SmithPreset {
      * @return <p>The resulting materials</p>
      */
     @NotNull
-    private List<Material> getMaterialsEndingWith(@NotNull String end) {
-        List<Material> matchedMaterials = new ArrayList<>();
+    private Set<Material> getMaterialsEndingWith(@NotNull String end) {
+        Set<Material> matchedMaterials = new HashSet<>();
         for (Material material : ItemHelper.getAllReforgeAbleMaterials()) {
             if (!material.name().startsWith("LEGACY") && material.name().endsWith(end)) {
                 matchedMaterials.add(material);
@@ -258,12 +290,12 @@ public enum SmithPreset {
     }
 
     /**
-     * Gets material names of all materials reforge-able by this smith
+     * Gets material names of all materials reforge-able by this smith preset
      *
-     * @return <p>All material names for this smith</p>
+     * @return <p>All material names for this smith preset</p>
      */
     @NotNull
-    private List<String> getMaterialNames() {
+    private Set<String> getMaterialNames() {
         return getNames(this.getMaterials());
     }
 
@@ -274,7 +306,7 @@ public enum SmithPreset {
      * @return <p>All material names for this smith</p>
      */
     @NotNull
-    private List<String> getMaterialNames(@NotNull SmithPresetFilter filter) {
+    private Set<String> getMaterialNames(@NotNull SmithPresetFilter filter) {
         return getNames(this.getFilteredMaterials(filter));
     }
 
@@ -285,8 +317,8 @@ public enum SmithPreset {
      * @return <p>The names of the materials</p>
      */
     @NotNull
-    private List<String> getNames(@NotNull List<Material> materials) {
-        List<String> items = new ArrayList<>();
+    private Set<String> getNames(@NotNull Set<Material> materials) {
+        Set<String> items = new HashSet<>();
         for (Material material : materials) {
             items.add(material.name().toLowerCase().replace("_", "-"));
         }
@@ -300,8 +332,8 @@ public enum SmithPreset {
      * @return <p>The negated material names</p>
      */
     @NotNull
-    private static List<String> negateMaterials(@NotNull List<String> materials) {
-        List<String> negatedMaterials = new ArrayList<>(materials.size());
+    private static Set<String> negateMaterials(@NotNull Set<String> materials) {
+        Set<String> negatedMaterials = new HashSet<>(materials.size());
         materials.forEach((material) -> {
             if (material != null && !material.isBlank()) {
                 negatedMaterials.add("-" + material);
diff --git a/src/main/java/net/knarcraft/blacksmith/util/ItemHelper.java b/src/main/java/net/knarcraft/blacksmith/util/ItemHelper.java
index 26d295b..b36a2da 100644
--- a/src/main/java/net/knarcraft/blacksmith/util/ItemHelper.java
+++ b/src/main/java/net/knarcraft/blacksmith/util/ItemHelper.java
@@ -101,10 +101,12 @@ public final class ItemHelper {
     /**
      * Gets a complete list of all reforge-able materials
      *
+     * <p>Note: As this loops through all materials, the result should be cached</p>
+     *
      * @return <p>A complete list of reforge-able materials</p>
      */
-    public static @NotNull List<Material> getAllReforgeAbleMaterials() {
-        List<Material> reforgeAbleMaterials = new ArrayList<>();
+    public static @NotNull Set<Material> getAllReforgeAbleMaterials() {
+        Set<Material> reforgeAbleMaterials = new HashSet<>();
         for (Material material : Material.values()) {
             ItemStack item = new ItemStack(material);
             if (isRepairable(item)) {
@@ -207,12 +209,12 @@ public final class ItemHelper {
      * @param extended     <p>Whether to use an extended match, allowing any material</p>
      * @return <p>The matched material(s)</p>
      */
-    public static @NotNull List<Material> getWildcardMatch(@NotNull String materialName, boolean extended) {
+    public static @NotNull Set<Material> getWildcardMatch(@NotNull String materialName, boolean extended) {
         String search = InputParsingHelper.regExIfy(materialName);
-        List<Material> materials = new ArrayList<>();
-        List<Material> all;
+        Set<Material> materials = new HashSet<>();
+        Set<Material> all;
         if (extended) {
-            all = List.of(Material.values());
+            all = Set.of(Material.values());
         } else {
             all = ItemHelper.getAllReforgeAbleMaterials();
         }