diff --git a/src/EditSession.java b/src/EditSession.java
index e222d5bb6..a5a7361f0 100644
--- a/src/EditSession.java
+++ b/src/EditSession.java
@@ -887,6 +887,19 @@ public class EditSession {
         int d = (5 - radius * 4) / 4;
         int affected = 0;
 
+        if (height == 0) {
+            return 0;
+        } else if (height < 0) {
+            height = -height;
+            pos = pos.subtract(0, height, 0);
+        }
+
+        if (pos.getBlockY() - height - 1 < 0) {
+            height = pos.getBlockY() + 1;
+        } else if (pos.getBlockY() + height - 1 > 127) {
+            height = 127 - pos.getBlockY() + 1;
+        }
+
         affected += makeHCylinderPoints(pos, x, z, height, block);
 
         while (x < z) {
@@ -961,6 +974,19 @@ public class EditSession {
         int d = (5 - radius * 4) / 4;
         int affected = 0;
 
+        if (height == 0) {
+            return 0;
+        } else if (height < 0) {
+            height = -height;
+            pos = pos.subtract(0, height, 0);
+        }
+
+        if (pos.getBlockY() - height - 1 < 0) {
+            height = pos.getBlockY() + 1;
+        } else if (pos.getBlockY() + height - 1 > 127) {
+            height = 127 - pos.getBlockY() + 1;
+        }
+
         affected += makeCylinderPoints(pos, x, z, height, block);
 
         while (x < z) {
diff --git a/src/WorldEdit.java b/src/WorldEdit.java
index 06dc044dc..565a738ad 100644
--- a/src/WorldEdit.java
+++ b/src/WorldEdit.java
@@ -411,7 +411,7 @@ public class WorldEdit {
             checkArgs(split, 2, 3, split[0]);
             BaseBlock block = getBlock(split[1]);
             int radius = Math.max(1, Integer.parseInt(split[2]));
-            int height = split.length > 3 ? Math.max(1, Integer.parseInt(split[3])) : 1;
+            int height = split.length > 3 ? Integer.parseInt(split[3]) : 1;
 
             Vector pos = session.getPlacementPosition(player);
             int affected = editSession.makeHollowCylinder(pos, block, radius, height);
@@ -424,7 +424,7 @@ public class WorldEdit {
             checkArgs(split, 2, 3, split[0]);
             BaseBlock block = getBlock(split[1]);
             int radius = Math.max(1, Integer.parseInt(split[2]));
-            int height = split.length > 3 ? Math.max(1, Integer.parseInt(split[3])) : 1;
+            int height = split.length > 3 ? Integer.parseInt(split[3]) : 1;
 
             Vector pos = session.getPlacementPosition(player);
             int affected = editSession.makeCylinder(pos, block, radius, height);
diff --git a/src/com/sk89q/worldedit/Vector.java b/src/com/sk89q/worldedit/Vector.java
index 1a92b1a43..925327151 100644
--- a/src/com/sk89q/worldedit/Vector.java
+++ b/src/com/sk89q/worldedit/Vector.java
@@ -99,6 +99,26 @@ public class Vector {
         return (int)Math.round(x);
     }
 
+    /**
+     * Set X.
+     *
+     * @param x
+     * @return new vector
+     */
+    public Vector setX(double x) {
+        return new Vector(x, y, z);
+    }
+
+    /**
+     * Set X.
+     *
+     * @param x
+     * @return new vector
+     */
+    public Vector setX(int x) {
+        return new Vector(x, y, z);
+    }
+
     /**
      * @return the y
      */
@@ -113,6 +133,26 @@ public class Vector {
         return (int)Math.round(y);
     }
 
+    /**
+     * Set Y.
+     *
+     * @param y
+     * @return new vector
+     */
+    public Vector setY(double y) {
+        return new Vector(x, y, z);
+    }
+
+    /**
+     * Set Y.
+     *
+     * @param y
+     * @return new vector
+     */
+    public Vector setY(int y) {
+        return new Vector(x, y, z);
+    }
+
     /**
      * @return the z
      */
@@ -127,6 +167,26 @@ public class Vector {
         return (int)Math.round(z);
     }
 
+    /**
+     * Set Z.
+     *
+     * @param z
+     * @return new vector
+     */
+    public Vector setZ(double z) {
+        return new Vector(x, y, z);
+    }
+
+    /**
+     * Set Z.
+     *
+     * @param z
+     * @return new vector
+     */
+    public Vector setZ(int z) {
+        return new Vector(x, y, z);
+    }
+
     /**
      * Adds two points.
      *