diff --git a/src/main/java/org/geysermc/packgenerator/pack/attachable/BedrockAttachable.java b/src/main/java/org/geysermc/packgenerator/pack/attachable/BedrockAttachable.java
index 350b819..a548035 100644
--- a/src/main/java/org/geysermc/packgenerator/pack/attachable/BedrockAttachable.java
+++ b/src/main/java/org/geysermc/packgenerator/pack/attachable/BedrockAttachable.java
@@ -28,6 +28,11 @@ public record BedrockAttachable(BedrockVersion formatVersion, AttachableInfo inf
             ).apply(instance, BedrockAttachable::new)
     );
 
+    public void save(Path attachablesDirectory) throws IOException {
+        // Get a safe attachable path by using Geyser's way of getting icons
+        CodecUtil.trySaveJson(CODEC, this, attachablesDirectory.resolve(GeyserSingleDefinition.iconFromResourceLocation(info.identifier) + ".json"));
+    }
+
     public static Builder builder(ResourceLocation identifier) {
         return new Builder(identifier);
     }
@@ -51,11 +56,6 @@ public record BedrockAttachable(BedrockVersion formatVersion, AttachableInfo inf
                 .build();
     }
 
-    public void save(Path attachablesPath) throws IOException {
-        // Get a safe attachable path by using Geyser's way of getting icons
-        CodecUtil.trySaveJson(CODEC, this, attachablesPath.resolve(GeyserSingleDefinition.iconFromResourceLocation(info.identifier) + ".json"));
-    }
-
     public static class Builder {
         private final ResourceLocation identifier;
         private final EnumMap<DisplaySlot, String> materials = new EnumMap<>(DisplaySlot.class);
diff --git a/src/main/java/org/geysermc/packgenerator/pack/geometry/BedrockGeometry.java b/src/main/java/org/geysermc/packgenerator/pack/geometry/BedrockGeometry.java
index 0a9f75a..89ad066 100644
--- a/src/main/java/org/geysermc/packgenerator/pack/geometry/BedrockGeometry.java
+++ b/src/main/java/org/geysermc/packgenerator/pack/geometry/BedrockGeometry.java
@@ -4,15 +4,22 @@ import com.mojang.serialization.Codec;
 import com.mojang.serialization.codecs.RecordCodecBuilder;
 import net.minecraft.core.Direction;
 import net.minecraft.util.ExtraCodecs;
+import org.geysermc.packgenerator.CodecUtil;
 import org.geysermc.packgenerator.pack.BedrockVersion;
 import org.joml.Vector2f;
 import org.joml.Vector3f;
 
+import java.io.IOException;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 
 public record BedrockGeometry(BedrockVersion formatVersion, List<GeometryDefinition> definitions) {
+    public static final BedrockVersion FORMAT_VERSION = BedrockVersion.of(1, 21, 0);
     public static final Vector3f VECTOR3F_ZERO = new Vector3f();
 
     public static final Codec<BedrockGeometry> CODEC = RecordCodecBuilder.create(instance ->
@@ -22,6 +29,83 @@ public record BedrockGeometry(BedrockVersion formatVersion, List<GeometryDefinit
             ).apply(instance, BedrockGeometry::new)
     );
 
+    public void save(Path geometryDirectory) throws IOException {
+        CodecUtil.trySaveJson(CODEC, this, geometryDirectory.resolve(definitions.getFirst().info.identifier + ".geo.json"));
+    }
+
+    public static BedrockGeometry of(GeometryDefinition... definitions) {
+        return new BedrockGeometry(FORMAT_VERSION, Arrays.asList(definitions));
+    }
+
+    public static Builder builder(String identifier) {
+        return new Builder(identifier);
+    }
+
+    public static Bone.Builder bone(String name) {
+        return new Bone.Builder(name);
+    }
+
+    public static Cube.Builder cube(Vector3f origin, Vector3f size) {
+        return new Cube.Builder(origin, size);
+    }
+
+    public static class Builder {
+        private final String identifier;
+        private final List<Bone> bones = new ArrayList<>();
+
+        private Optional<Float> visibleBoundsWidth = Optional.empty();
+        private Optional<Float> visibleBoundsHeight = Optional.empty();
+        private Optional<Vector3f> visibleBoundsOffset = Optional.empty();
+        private Optional<Integer> textureWidth = Optional.empty();
+        private Optional<Integer> textureHeight = Optional.empty();
+
+        public Builder(String identifier) {
+            this.identifier = identifier;
+        }
+
+        public Builder withVisibleBoundsWidth(float visibleBoundsWidth) {
+            this.visibleBoundsWidth = Optional.of(visibleBoundsWidth);
+            return this;
+        }
+
+        public Builder withVisibleBoundsHeight(float visibleBoundsHeight) {
+            this.visibleBoundsHeight = Optional.of(visibleBoundsHeight);
+            return this;
+        }
+
+        public Builder withVisibleBoundsOffset(Vector3f visibleBoundsOffset) {
+            this.visibleBoundsOffset = Optional.of(visibleBoundsOffset);
+            return this;
+        }
+
+        public Builder withTextureWidth(int textureWidth) {
+            this.textureWidth = Optional.of(textureWidth);
+            return this;
+        }
+
+        public Builder withTextureHeight(int textureHeight) {
+            this.textureHeight = Optional.of(textureHeight);
+            return this;
+        }
+
+        public Builder withBone(Bone bone) {
+            if (bones.stream().anyMatch(existing -> existing.name.equals(bone.name))) {
+                throw new IllegalArgumentException("Duplicate bone with name " + bone.name);
+            }
+            bones.add(bone);
+            return this;
+        }
+
+        public Builder withBone(Bone.Builder builder) {
+            return withBone(builder.build());
+        }
+
+        public BedrockGeometry build() {
+            return BedrockGeometry.of(new GeometryDefinition(
+                    new GeometryInfo(identifier, visibleBoundsWidth, visibleBoundsHeight, visibleBoundsOffset, textureWidth, textureHeight), List.copyOf(bones)));
+        }
+    }
+
     public record GeometryDefinition(GeometryInfo info, List<Bone> bones) {
         public static final Codec<GeometryDefinition> CODEC = RecordCodecBuilder.create(instance ->
                 instance.group(
@@ -58,6 +142,59 @@ public record BedrockGeometry(BedrockVersion formatVersion, List<GeometryDefinit
                         Cube.CODEC.listOf().optionalFieldOf("cubes", List.of()).forGetter(Bone::cubes)
                 ).apply(instance, Bone::new)
         );
+
+        public static class Builder {
+            private final String name;
+            private final List<Cube> cubes = new ArrayList<>();
+
+            private Optional<String> parent = Optional.empty();
+            private Vector3f pivot = VECTOR3F_ZERO;
+            private Vector3f rotation = VECTOR3F_ZERO;
+            private boolean mirror = false;
+            private float inflate = 0.0F;
+
+            public Builder(String name) {
+                this.name = name;
+            }
+
+            public Builder withParent(String parent) {
+                this.parent = Optional.of(parent);
+                return this;
+            }
+
+            public Builder withPivot(Vector3f pivot) {
+                this.pivot = pivot;
+                return this;
+            }
+
+            public Builder withRotation(Vector3f rotation) {
+                this.rotation = rotation;
+                return this;
+            }
+
+            public Builder mirror() {
+                this.mirror = true;
+                return this;
+            }
+
+            public Builder withInflate(float inflate) {
+                this.inflate = inflate;
+                return this;
+            }
+
+            public Builder withCube(Cube cube) {
+                this.cubes.add(cube);
+                return this;
+            }
+
+            public Builder withCube(Cube.Builder builder) {
+                return withCube(builder.build());
+            }
+
+            public Bone build() {
+                return new Bone(name, parent, pivot, rotation, mirror, inflate, List.copyOf(cubes));
+            }
+        }
     }
 
     public record Cube(Vector3f origin, Vector3f size, Vector3f rotation, Vector3f pivot, float inflate, boolean mirror,
@@ -65,8 +202,8 @@ public record BedrockGeometry(BedrockVersion formatVersion, List<GeometryDefinit
         private static final Codec<Map<Direction, Face>> FACE_MAP_CODEC = Codec.unboundedMap(Direction.CODEC, Face.CODEC);
         public static final Codec<Cube> CODEC = RecordCodecBuilder.create(instance ->
                 instance.group(
-                        ExtraCodecs.VECTOR3F.fieldOf("origin").forGetter(Cube::origin),
-                        ExtraCodecs.VECTOR3F.fieldOf("size").forGetter(Cube::size),
+                        ExtraCodecs.VECTOR3F.fieldOf("uvOrigin").forGetter(Cube::origin),
+                        ExtraCodecs.VECTOR3F.fieldOf("uvSize").forGetter(Cube::size),
                         ExtraCodecs.VECTOR3F.optionalFieldOf("rotation", VECTOR3F_ZERO).forGetter(Cube::size),
                         ExtraCodecs.VECTOR3F.optionalFieldOf("pivot", VECTOR3F_ZERO).forGetter(Cube::pivot),
                         Codec.FLOAT.optionalFieldOf("inflate", 0.0F).forGetter(Cube::inflate),
@@ -74,13 +211,61 @@ public record BedrockGeometry(BedrockVersion formatVersion, List<GeometryDefinit
                         FACE_MAP_CODEC.optionalFieldOf("uv", Map.of()).forGetter(Cube::faces)
                 ).apply(instance, Cube::new)
         );
+
+        public static class Builder {
+            private final Vector3f origin;
+            private final Vector3f size;
+            private final Map<Direction, Face> faces = new HashMap<>();
+
+            private Vector3f rotation = VECTOR3F_ZERO;
+            private Vector3f pivot = VECTOR3F_ZERO;
+            private float inflate = 0.0F;
+            private boolean mirror = false;
+
+            public Builder(Vector3f origin, Vector3f size) {
+                this.origin = origin;
+                this.size = size;
+            }
+
+            public Builder withRotation(Vector3f rotation) {
+                this.rotation = rotation;
+                return this;
+            }
+
+            public Builder withPivot(Vector3f pivot) {
+                this.pivot = pivot;
+                return this;
+            }
+
+            public Builder withInflate(float inflate) {
+                this.inflate = inflate;
+                return this;
+            }
+
+            public Builder mirror() {
+                this.mirror = true;
+                return this;
+            }
+
+            public Builder withFace(Direction direction, Vector2f uvOrigin, Vector2f uvSize) {
+                if (faces.containsKey(direction)) {
+                    throw new IllegalArgumentException("Already added a face for direction " + direction);
+                }
+                faces.put(direction, new Face(uvOrigin, uvSize));
+                return this;
+            }
+
+            public Cube build() {
+                return new Cube(origin, size, rotation, pivot, inflate, mirror, Map.copyOf(faces));
+            }
+        }
     }
 
-    public record Face(Vector2f origin, Vector2f size) {
+    public record Face(Vector2f uvOrigin, Vector2f uvSize) {
         public static final Codec<Face> CODEC = RecordCodecBuilder.create(instance ->
                 instance.group(
-                        ExtraCodecs.VECTOR2F.fieldOf("uv").forGetter(Face::origin),
-                        ExtraCodecs.VECTOR2F.fieldOf("uv_size").forGetter(Face::size)
+                        ExtraCodecs.VECTOR2F.fieldOf("uv").forGetter(Face::uvOrigin),
+                        ExtraCodecs.VECTOR2F.fieldOf("uv_size").forGetter(Face::uvSize)
                 ).apply(instance, Face::new)
         );
     }