diff --git a/item.go b/item.go
index 80fdb1c..70c500b 100644
--- a/item.go
+++ b/item.go
@@ -18,7 +18,7 @@ var (
 	cacheObjItemCraft map[string]int64
 )
 
-func addObjItem(code string, name string, itemTypeID64 int64, weight int64, exchange string, auction bool) (int64, error) {
+func addObjItem(code string, name string, itemTypeID64 int64, weight int64, exchange string, auction bool, craftable bool) (int64, error) {
 	tx, err := db.Begin()
 	logOnError(err, "addObjItem : start transaction")
 	if err != nil {
@@ -41,8 +41,8 @@ func addObjItem(code string, name string, itemTypeID64 int64, weight int64, exch
 		return 0, err
 	}
 
-	stmt, err := tx.Prepare(`INSERT INTO obj_item	(obj_id, intl_id, weight, exchange, auction)
-							 VALUES 				(?,      ?,       ?,      ?,        ?);`)
+	stmt, err := tx.Prepare(`INSERT INTO obj_item	(obj_id, intl_id, weight, exchange, auction, craftable)
+							 VALUES 				(?,      ?,       ?,      ?,        ?,       ?);`)
 	logOnError(err, "addObjItem : prepare insert obj_item")
 	if err != nil {
 		err2 := tx.Rollback()
@@ -51,19 +51,18 @@ func addObjItem(code string, name string, itemTypeID64 int64, weight int64, exch
 	}
 	defer stmt.Close()
 
-	var e, a int
+	var e, a, c int = 0, 0, 0
 	if exchange != `` {
 		e = 1
-	} else {
-		e = 0
 	}
 	if auction {
 		a = 1
-	} else {
-		a = 0
+	}
+	if craftable {
+		c = 1
 	}
 
-	_, err = stmt.Exec(objId, code, weight, e, a)
+	_, err = stmt.Exec(objId, code, weight, e, a, c)
 	logOnError(err, "addObjItem : exec insert obj_item")
 	if err != nil {
 		err2 := tx.Rollback()
@@ -173,6 +172,27 @@ func getSilentObjItemID(code string, name string) int64 {
 
 }
 
+func setObjItemCraftable(objID64 int64, craftable bool) error {
+	var c int = 0
+	if craftable {
+		c = 1
+	}
+
+	stmt, err := db.Prepare(`UPDATE obj_item oi SET oi.craftable = ? WHERE oi.obj_id = ?;`)
+	logOnError(err, "setObjItemCraftable : prepare update obj_item")
+	if err != nil {
+		return err
+	}
+	defer stmt.Close()
+
+	_, err = stmt.Exec(c, objID64)
+	logOnError(err, fmt.Sprintf("setObjItemCraftable : update obj_item(%d)", objID64))
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
 func setObjItemWeight(objID64 int64, weight int64) error {
 	stmt, err := db.Prepare(`UPDATE obj_item oi SET oi.weight = ? WHERE oi.obj_id = ?;`)
 	logOnError(err, "setObjItemWeight : prepare update obj_item")
@@ -257,11 +277,12 @@ func getCraftItemID(cmd string) (int64, error) {
 
 func loadObjItem() error {
 	var (
-		obj_id  int64
-		type_id int64
-		intl_id string
-		name    string
-		weight  int64
+		obj_id    int64
+		type_id   int64
+		intl_id   string
+		name      string
+		weight    int64
+		craftable int
 	)
 
 	muxObjItem.Lock()
@@ -300,7 +321,7 @@ func loadObjItem() error {
 		}
 	}
 
-	objs, err := db.Query(`SELECT oi.obj_id, o.obj_sub_type_id, oi.intl_id, oi.weight FROM obj o, obj_item oi WHERE o.id = oi.obj_id;`)
+	objs, err := db.Query(`SELECT oi.obj_id, o.obj_sub_type_id, oi.intl_id, oi.weight, oi.craftable FROM obj o, obj_item oi WHERE o.id = oi.obj_id;`)
 	if err != nil {
 		logOnError(err, "loadObjItem : querying items")
 		return err
@@ -308,7 +329,7 @@ func loadObjItem() error {
 	defer objs.Close()
 
 	for objs.Next() {
-		err = objs.Scan(&obj_id, &type_id, &intl_id, &weight)
+		err = objs.Scan(&obj_id, &type_id, &intl_id, &weight, &craftable)
 		if err != nil {
 			logOnError(err, "loadObjItem : scanning items")
 			return err
@@ -324,6 +345,11 @@ func loadObjItem() error {
 				setObjItemWeight(obj_id, objItems[id].Weight)
 			}
 
+			if (craftable == 0 && objItems[id].Craftable) || (craftable == 1 && !objItems[id].Craftable) {
+				log.Printf("loadObjItem : %s - %s : craftable changed : %v => %v\n", objItems[id].Code, objItems[id].Names[0], !objItems[id].Craftable, objItems[id].Craftable)
+				setObjItemCraftable(obj_id, objItems[id].Craftable)
+			}
+
 			cacheObjItemId[obj_id] = id
 		}
 	}
@@ -350,7 +376,7 @@ func loadObjItem() error {
 
 	for _, i := range cacheObjItem {
 		if objItems[i].ObjID64 == 0 {
-			id, _ := addObjItem(objItems[i].Code, objItems[i].Names[0], objItems[i].ItemTypeID, objItems[i].Weight, objItems[i].Exchange, objItems[i].Auction)
+			id, _ := addObjItem(objItems[i].Code, objItems[i].Names[0], objItems[i].ItemTypeID, objItems[i].Weight, objItems[i].Exchange, objItems[i].Auction, objItems[i].Craftable)
 			objItems[i].ObjID64 = id
 			cacheObjItemId[id] = i
 			for _, n := range objItems[i].Names {
diff --git a/sql.go b/sql.go
index dcc1bb4..744530b 100644
--- a/sql.go
+++ b/sql.go
@@ -88,6 +88,7 @@ func initDB() {
 							,weight         SMALLINT NOT NULL
 							,exchange       TINYINT NOT NULL
 							,auction        TINYINT NOT NULL
+							,craftable      TINYINT NOT NULL
 							,FOREIGN KEY (obj_id) REFERENCES obj(id) ON DELETE CASCADE
 							,UNIQUE KEY (intl_id)
 						  ) ENGINE = InnoDB CHARSET=utf8mb4 COLLATE utf8mb4_bin;`)