diff --git a/src/content/ContentLoader.cpp b/src/content/ContentLoader.cpp
index f855a89d..c9f09ae2 100644
--- a/src/content/ContentLoader.cpp
+++ b/src/content/ContentLoader.cpp
@@ -224,9 +224,9 @@ void ContentLoader::loadBlock(
     if (auto model = BlockModel_from(modelName)) {
         if (*model == BlockModel::custom) {
             if (root.has("model-primitives")) {
-                loadCustomBlockModel(def, root["model-primitives"]);
+                def.customModelRaw = root["model-primitives"];
             } else {
-                logger.error() << name << ": no 'model-primitives' found";
+                throw std::runtime_error(name + ": no 'model-primitives' found");
             }
         }
         def.model = *model;
@@ -277,8 +277,6 @@ void ContentLoader::loadBlock(
         );
         aabb.b += aabb.a;
         def.hitboxes = {aabb};
-    } else if (!def.modelBoxes.empty()) {
-        def.hitboxes = def.modelBoxes;
     } else {
         def.hitboxes = {AABB()};
     }
@@ -350,61 +348,6 @@ void ContentLoader::loadBlock(
     }
 }
 
-void ContentLoader::loadCustomBlockModel(Block& def, const dv::value& primitives) {
-    if (primitives.has("aabbs")) {
-        const auto& modelboxes = primitives["aabbs"];
-        for (uint i = 0; i < modelboxes.size(); i++) {
-            // Parse aabb
-            const auto& boxarr = modelboxes[i];
-            AABB modelbox;
-            modelbox.a = glm::vec3(
-                boxarr[0].asNumber(), boxarr[1].asNumber(), boxarr[2].asNumber()
-            );
-            modelbox.b = glm::vec3(
-                boxarr[3].asNumber(), boxarr[4].asNumber(), boxarr[5].asNumber()
-            );
-            modelbox.b += modelbox.a;
-            def.modelBoxes.push_back(modelbox);
-
-            if (boxarr.size() == 7) {
-                for (uint j = 6; j < 12; j++) {
-                    def.modelTextures.emplace_back(boxarr[6].asString());
-                }
-            } else if (boxarr.size() == 12) {
-                for (uint j = 6; j < 12; j++) {
-                    def.modelTextures.emplace_back(boxarr[j].asString());
-                }
-            } else {
-                for (uint j = 6; j < 12; j++) {
-                    def.modelTextures.emplace_back("notfound");
-                }
-            }
-        }
-    }
-    if (primitives.has("tetragons")) {
-        const auto& modeltetragons = primitives["tetragons"];
-        for (uint i = 0; i < modeltetragons.size(); i++) {
-            // Parse tetragon to points
-            const auto& tgonobj = modeltetragons[i];
-            glm::vec3 p1(
-                tgonobj[0].asNumber(), tgonobj[1].asNumber(), tgonobj[2].asNumber()
-            );
-            glm::vec3 xw(
-                tgonobj[3].asNumber(), tgonobj[4].asNumber(), tgonobj[5].asNumber()
-            );
-            glm::vec3 yh(
-                tgonobj[6].asNumber(), tgonobj[7].asNumber(), tgonobj[8].asNumber()
-            );
-            def.modelExtraPoints.push_back(p1);
-            def.modelExtraPoints.push_back(p1 + xw);
-            def.modelExtraPoints.push_back(p1 + xw + yh);
-            def.modelExtraPoints.push_back(p1 + yh);
-
-            def.modelTextures.emplace_back(tgonobj[9].asString());
-        }
-    }
-}
-
 void ContentLoader::loadItem(
     ItemDef& def, const std::string& name, const fs::path& file
 ) {
diff --git a/src/content/ContentLoader.hpp b/src/content/ContentLoader.hpp
index 1b011cbb..22cb33ef 100644
--- a/src/content/ContentLoader.hpp
+++ b/src/content/ContentLoader.hpp
@@ -42,7 +42,6 @@ class ContentLoader {
         GeneratorDef& def, const std::string& full, const std::string& name
     );
 
-    static void loadCustomBlockModel(Block& def, const dv::value& primitives);
     static void loadBlockMaterial(BlockMaterial& def, const fs::path& file);
     void loadBlock(
         Block& def, const std::string& name, const fs::path& file
diff --git a/src/engine.cpp b/src/engine.cpp
index 0cfc6733..a75d90ff 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -286,6 +286,18 @@ void Engine::loadAssets() {
     assets = std::move(new_assets);
     
     if (content) {
+        for (auto& [name, def] : content->blocks.getDefs()) {
+            if (def->model == BlockModel::custom) {
+                assets->store(
+                    std::make_unique<model::Model>(
+                        ModelsGenerator::loadCustomBlockModel(
+                            def->customModelRaw, *assets, !def->shadeless
+                        )
+                    ),
+                    name + ".model"
+                );
+            }
+        }
         for (auto& [name, def] : content->items.getDefs()) {
             assets->store(
                 std::make_unique<model::Model>(
diff --git a/src/frontend/ContentGfxCache.cpp b/src/frontend/ContentGfxCache.cpp
index f45259e1..1fccefcf 100644
--- a/src/frontend/ContentGfxCache.cpp
+++ b/src/frontend/ContentGfxCache.cpp
@@ -1,24 +1,25 @@
 #include "ContentGfxCache.hpp"
 
-#include "UiDocument.hpp"
+#include <string>
 
+#include "UiDocument.hpp"
 #include "assets/Assets.hpp"
 #include "content/Content.hpp"
 #include "content/ContentPack.hpp"
 #include "core_defs.hpp"
+#include "graphics/commons/Model.hpp"
 #include "graphics/core/Atlas.hpp"
 #include "maths/UVRegion.hpp"
 #include "voxels/Block.hpp"
 
-#include <string>
-
-ContentGfxCache::ContentGfxCache(const Content* content, Assets* assets) : content(content) {
+ContentGfxCache::ContentGfxCache(const Content* content, Assets* assets)
+    : content(content) {
     auto indices = content->getIndices();
     sideregions = std::make_unique<UVRegion[]>(indices->blocks.count() * 6);
     auto atlas = assets->get<Atlas>("blocks");
-    
+
     const auto& blocks = indices->blocks.getIterable();
-    for (uint i = 0; i < blocks.size(); i++) {
+    for (blockid_t i = 0; i < blocks.size(); i++) {
         auto def = blocks[i];
         for (uint side = 0; side < 6; side++) {
             const std::string& tex = def->textureFaces[side];
@@ -28,13 +29,9 @@ ContentGfxCache::ContentGfxCache(const Content* content, Assets* assets) : conte
                 sideregions[i * 6 + side] = atlas->get(TEXTURE_NOTFOUND);
             }
         }
-        for (uint side = 0; side < def->modelTextures.size(); side++) {
-            const std::string& tex = def->modelTextures[side];
-            if (atlas->has(tex)) {
-                def->modelUVs.push_back(atlas->get(tex));
-            } else if (atlas->has(TEXTURE_NOTFOUND)) {
-                def->modelUVs.push_back(atlas->get(TEXTURE_NOTFOUND));
-            }
+        if (def->model == BlockModel::custom) {
+            models[def->rt.id] =
+                assets->require<model::Model>(def->name + ".model");
         }
     }
 }
@@ -44,3 +41,11 @@ ContentGfxCache::~ContentGfxCache() = default;
 const Content* ContentGfxCache::getContent() const {
     return content;
 }
+
+const model::Model& ContentGfxCache::getModel(blockid_t id) const {
+    const auto& found = models.find(id);
+    if (found == models.end()) {
+        throw std::runtime_error("model not found");
+    }
+    return found->second;
+}
diff --git a/src/frontend/ContentGfxCache.hpp b/src/frontend/ContentGfxCache.hpp
index 8d92d1a3..a268b2f6 100644
--- a/src/frontend/ContentGfxCache.hpp
+++ b/src/frontend/ContentGfxCache.hpp
@@ -3,15 +3,22 @@
 #include "typedefs.hpp"
 
 #include <memory>
+#include <stdexcept>
+#include <unordered_map>
 
 class Content;
 class Assets;
 struct UVRegion;
 
+namespace model {
+    struct Model;
+}
+
 class ContentGfxCache {
     const Content* content;
     // array of block sides uv regions (6 per block)
     std::unique_ptr<UVRegion[]> sideregions;
+    std::unordered_map<blockid_t, model::Model> models;
 public:
     ContentGfxCache(const Content* content, Assets* assets);
     ~ContentGfxCache();
@@ -19,6 +26,8 @@ public:
     inline const UVRegion& getRegion(blockid_t id, int side) const {
         return sideregions[id * 6 + side];
     }
+
+    const model::Model& getModel(blockid_t id) const;
     
     const Content* getContent() const;
 };
diff --git a/src/graphics/commons/Model.cpp b/src/graphics/commons/Model.cpp
index 3595a8e2..12888d32 100644
--- a/src/graphics/commons/Model.cpp
+++ b/src/graphics/commons/Model.cpp
@@ -36,7 +36,7 @@ void Mesh::addPlane(
 
     vertices.push_back({pos-right-up, {uv.u1, uv.v1}, norm});
     vertices.push_back({pos+right+up, {uv.u2, uv.v2}, norm});
-    vertices.push_back({pos-right+up, {uv.u1, uv.u2}, norm});
+    vertices.push_back({pos-right+up, {uv.u1, uv.v2}, norm});
 }
 
 void Mesh::addBox(const glm::vec3& pos, const glm::vec3& size) {
diff --git a/src/graphics/render/BlocksPreview.cpp b/src/graphics/render/BlocksPreview.cpp
index 4c772c86..637c5635 100644
--- a/src/graphics/render/BlocksPreview.cpp
+++ b/src/graphics/render/BlocksPreview.cpp
@@ -64,41 +64,41 @@ std::unique_ptr<ImageData> BlocksPreview::draw(
             {
                 glm::vec3 pmul = glm::vec3(size * 0.63f);
                 glm::vec3 hitbox = glm::vec3();
-                for (const auto& box : def.modelBoxes) {
-                    hitbox = glm::max(hitbox, box.size());
-                }
+                // for (const auto& box : def.modelBoxes) {
+                //     hitbox = glm::max(hitbox, box.size());
+                // }
                 offset.y += (1.0f - hitbox).y * 0.5f;
                 shader->uniformMatrix("u_apply", glm::translate(glm::mat4(1.0f), offset));
-                for (size_t i = 0; i < def.modelBoxes.size(); i++) {
-                    const UVRegion (&boxtexfaces)[6] = {
-                        def.modelUVs[i * 6],
-                        def.modelUVs[i * 6 + 1],
-                        def.modelUVs[i * 6 + 2],
-                        def.modelUVs[i * 6 + 3],
-                        def.modelUVs[i * 6 + 4],
-                        def.modelUVs[i * 6 + 5]
-                    };
-                    batch->cube(
-                        def.modelBoxes[i].a * glm::vec3(1.0f, 1.0f, -1.0f) * pmul, 
-                        def.modelBoxes[i].size() * pmul, 
-                        boxtexfaces, glm::vec4(1.0f), !def.rt.emissive
-                    );
-                }
+                // for (size_t i = 0; i < def.modelBoxes.size(); i++) {
+                //     const UVRegion (&boxtexfaces)[6] = {
+                //         def.modelUVs[i * 6],
+                //         def.modelUVs[i * 6 + 1],
+                //         def.modelUVs[i * 6 + 2],
+                //         def.modelUVs[i * 6 + 3],
+                //         def.modelUVs[i * 6 + 4],
+                //         def.modelUVs[i * 6 + 5]
+                //     };
+                //     batch->cube(
+                //         def.modelBoxes[i].a * glm::vec3(1.0f, 1.0f, -1.0f) * pmul, 
+                //         def.modelBoxes[i].size() * pmul, 
+                //         boxtexfaces, glm::vec4(1.0f), !def.rt.emissive
+                //     );
+                // }
                 
-                auto& points = def.modelExtraPoints;
-                glm::vec3 poff = glm::vec3(0.0f, 0.0f, 1.0f);
+                // auto& points = def.modelExtraPoints;
+                // glm::vec3 poff = glm::vec3(0.0f, 0.0f, 1.0f);
 
-                for (size_t i = 0; i < def.modelExtraPoints.size() / 4; i++) {
-                    const UVRegion& reg = def.modelUVs[def.modelBoxes.size() * 6 + i];
+                // for (size_t i = 0; i < def.modelExtraPoints.size() / 4; i++) {
+                //     const UVRegion& reg = def.modelUVs[def.modelBoxes.size() * 6 + i];
                     
-                    batch->vertex((points[i * 4 + 0] - poff) * pmul, glm::vec2(reg.u1, reg.v1), glm::vec4(1.0));
-                    batch->vertex((points[i * 4 + 1] - poff) * pmul, glm::vec2(reg.u2, reg.v1), glm::vec4(1.0));
-                    batch->vertex((points[i * 4 + 2] - poff) * pmul, glm::vec2(reg.u2, reg.v2), glm::vec4(1.0));
-                    batch->vertex((points[i * 4 + 0] - poff) * pmul, glm::vec2(reg.u1, reg.v1), glm::vec4(1.0));
-                    batch->vertex((points[i * 4 + 2] - poff) * pmul, glm::vec2(reg.u2, reg.v2), glm::vec4(1.0));
-                    batch->vertex((points[i * 4 + 3] - poff) * pmul, glm::vec2(reg.u1, reg.v2), glm::vec4(1.0));
-                }
-                batch->flush();
+                //     batch->vertex((points[i * 4 + 0] - poff) * pmul, glm::vec2(reg.u1, reg.v1), glm::vec4(1.0));
+                //     batch->vertex((points[i * 4 + 1] - poff) * pmul, glm::vec2(reg.u2, reg.v1), glm::vec4(1.0));
+                //     batch->vertex((points[i * 4 + 2] - poff) * pmul, glm::vec2(reg.u2, reg.v2), glm::vec4(1.0));
+                //     batch->vertex((points[i * 4 + 0] - poff) * pmul, glm::vec2(reg.u1, reg.v1), glm::vec4(1.0));
+                //     batch->vertex((points[i * 4 + 2] - poff) * pmul, glm::vec2(reg.u2, reg.v2), glm::vec4(1.0));
+                //     batch->vertex((points[i * 4 + 3] - poff) * pmul, glm::vec2(reg.u1, reg.v2), glm::vec4(1.0));
+                // }
+                // batch->flush();
             }
             break;
         case BlockModel::xsprite: {
diff --git a/src/graphics/render/BlocksRenderer.cpp b/src/graphics/render/BlocksRenderer.cpp
index 651675c5..c3d7a33b 100644
--- a/src/graphics/render/BlocksRenderer.cpp
+++ b/src/graphics/render/BlocksRenderer.cpp
@@ -1,6 +1,7 @@
 #include "BlocksRenderer.hpp"
 
 #include "graphics/core/Mesh.hpp"
+#include "graphics/commons/Model.hpp"
 #include "maths/UVRegion.hpp"
 #include "constants.hpp"
 #include "content/Content.hpp"
@@ -303,6 +304,7 @@ void BlocksRenderer::blockAABB(
     }
 }
 
+#include <iostream>
 void BlocksRenderer::blockCustomModel(
     const glm::ivec3& icoord, const Block* block, ubyte rotation, bool lights, bool ao
 ) {
@@ -319,29 +321,31 @@ void BlocksRenderer::blockCustomModel(
         Z = orient.axisZ;
     }
 
-    for (size_t i = 0; i < block->modelBoxes.size(); i++) {
-        AABB box = block->modelBoxes[i];
-        auto size = box.size();
-        if (block->rotatable) {
-            orient.transform(box);
+    const auto& model = cache->getModel(block->rt.id);
+    for (const auto& mesh : model.meshes) {
+        if (vertexOffset + BlocksRenderer::VERTEX_SIZE * mesh.vertices.size() > capacity) {
+            overflow = true;
+            return;
+        }
+        int i = 0;
+        for (const auto& vertex : mesh.vertices) {
+            if ((i++) % 6 < 3) {
+            //    continue;
+            }
+            float d = glm::dot(glm::normalize(vertex.normal), SUN_VECTOR);
+            d = 0.8f + d * 0.2f;
+            const auto& n = vertex.normal;
+            vertexAO(
+                coord + vertex.coord - 0.5f,
+                vertex.uv.x,
+                vertex.uv.y,
+                glm::vec4(1, 1, 1, 0),
+                glm::vec3(n.x, -n.z, n.y),
+                glm::vec3(0, 1, 0),
+                n
+            );
+            indexBuffer[indexSize++] = indexOffset++;
         }
-        glm::vec3 center_coord = coord - glm::vec3(0.5f) + box.center();
-        faceAO(center_coord, X * size.x, Y * size.y, Z * size.z, block->modelUVs[i * 6 + 5], lights); // north
-        faceAO(center_coord, -X * size.x, Y * size.y, -Z * size.z, block->modelUVs[i * 6 + 4], lights); // south
-        faceAO(center_coord, X * size.x, -Z * size.z, Y * size.y, block->modelUVs[i * 6 + 3], lights); // top
-        faceAO(center_coord, -X * size.x, -Z * size.z, -Y * size.y, block->modelUVs[i * 6 + 2], lights); // bottom
-        faceAO(center_coord, -Z * size.z, Y * size.y, X * size.x, block->modelUVs[i * 6 + 1], lights); // west
-        faceAO(center_coord, Z * size.z, Y * size.y, -X * size.x, block->modelUVs[i * 6 + 0], lights); // east
-    }
-    
-    for (size_t i = 0; i < block->modelExtraPoints.size()/4; i++) {
-        tetragonicFace(coord,
-            block->modelExtraPoints[i * 4 + 0],
-            block->modelExtraPoints[i * 4 + 1],
-            block->modelExtraPoints[i * 4 + 2],
-            block->modelExtraPoints[i * 4 + 3],
-            X, Y, Z,
-            block->modelUVs[block->modelBoxes.size()*6 + i], lights);
     }
 }
 
diff --git a/src/graphics/render/ModelsGenerator.cpp b/src/graphics/render/ModelsGenerator.cpp
index 7da57d24..84faa380 100644
--- a/src/graphics/render/ModelsGenerator.cpp
+++ b/src/graphics/render/ModelsGenerator.cpp
@@ -59,13 +59,14 @@ model::Model ModelsGenerator::fromCustom(
     for (size_t i = 0; i < modelBoxes.size(); i++) {
         auto& mesh = model.addMesh("blocks:" + modelTextures[i * 6]);
         mesh.lighting = lighting;
-        const UVRegion(&boxtexfaces)[6] = {
+        const UVRegion boxtexfaces[6] = {
             get_region_for(modelTextures[i * 6], assets),
             get_region_for(modelTextures[i * 6 + 1], assets),
             get_region_for(modelTextures[i * 6 + 2], assets),
             get_region_for(modelTextures[i * 6 + 3], assets),
             get_region_for(modelTextures[i * 6 + 4], assets),
-            get_region_for(modelTextures[i * 6 + 5], assets)};
+            get_region_for(modelTextures[i * 6 + 5], assets)
+        };
         mesh.addBox(
             modelBoxes[i].center(), modelBoxes[i].size() * 0.5f, boxtexfaces
         );
@@ -112,13 +113,7 @@ model::Model ModelsGenerator::generate(
                 "blocks:" + blockDef.textureFaces.at(0), assets
             );
         } else if (blockDef.model == BlockModel::custom) {
-            model = fromCustom(
-                assets,
-                blockDef.modelBoxes,
-                blockDef.modelTextures,
-                blockDef.modelExtraPoints,
-                !blockDef.shadeless
-            );
+            model = assets.require<model::Model>(blockDef.name+".model");
             for (auto& mesh : model.meshes) {
                 mesh.scale(glm::vec3(0.3f));
             }
@@ -146,3 +141,67 @@ model::Model ModelsGenerator::generate(
         return model::Model();
     }
 }
+
+model::Model ModelsGenerator::loadCustomBlockModel(
+    const dv::value& primitives, const Assets& assets, bool lighting
+) {
+    std::vector<AABB> modelBoxes;
+    std::vector<std::string> modelTextures;
+    std::vector<glm::vec3> modelExtraPoints;
+
+    if (primitives.has("aabbs")) {
+        const auto& modelboxes = primitives["aabbs"];
+        for (uint i = 0; i < modelboxes.size(); i++) {
+            // Parse aabb
+            const auto& boxarr = modelboxes[i];
+            AABB modelbox;
+            modelbox.a = glm::vec3(
+                boxarr[0].asNumber(), boxarr[1].asNumber(), boxarr[2].asNumber()
+            );
+            modelbox.b = glm::vec3(
+                boxarr[3].asNumber(), boxarr[4].asNumber(), boxarr[5].asNumber()
+            );
+            modelbox.b += modelbox.a;
+            modelBoxes.push_back(modelbox);
+
+            if (boxarr.size() == 7) {
+                for (uint j = 6; j < 12; j++) {
+                    modelTextures.emplace_back(boxarr[6].asString());
+                }
+            } else if (boxarr.size() == 12) {
+                for (uint j = 6; j < 12; j++) {
+                    modelTextures.emplace_back(boxarr[j].asString());
+                }
+            } else {
+                for (uint j = 6; j < 12; j++) {
+                    modelTextures.emplace_back("notfound");
+                }
+            }
+        }
+    }
+    if (primitives.has("tetragons")) {
+        const auto& modeltetragons = primitives["tetragons"];
+        for (uint i = 0; i < modeltetragons.size(); i++) {
+            // Parse tetragon to points
+            const auto& tgonobj = modeltetragons[i];
+            glm::vec3 p1(
+                tgonobj[0].asNumber(), tgonobj[1].asNumber(), tgonobj[2].asNumber()
+            );
+            glm::vec3 xw(
+                tgonobj[3].asNumber(), tgonobj[4].asNumber(), tgonobj[5].asNumber()
+            );
+            glm::vec3 yh(
+                tgonobj[6].asNumber(), tgonobj[7].asNumber(), tgonobj[8].asNumber()
+            );
+            modelExtraPoints.push_back(p1);
+            modelExtraPoints.push_back(p1 + xw);
+            modelExtraPoints.push_back(p1 + xw + yh);
+            modelExtraPoints.push_back(p1 + yh);
+
+            modelTextures.emplace_back(tgonobj[9].asString());
+        }
+    }
+    return fromCustom(
+        assets, modelBoxes, modelTextures, modelExtraPoints, lighting
+    );
+}
diff --git a/src/graphics/render/ModelsGenerator.hpp b/src/graphics/render/ModelsGenerator.hpp
index ee19c541..52bc56d0 100644
--- a/src/graphics/render/ModelsGenerator.hpp
+++ b/src/graphics/render/ModelsGenerator.hpp
@@ -2,10 +2,12 @@
 
 #include "graphics/commons/Model.hpp"
 #include "maths/aabb.hpp"
+#include "data/dv.hpp"
 
 struct ItemDef;
 class Assets;
 class Content;
+struct Block;
 
 class ModelsGenerator {
 public:
@@ -20,4 +22,8 @@ public:
         const std::vector<glm::vec3>& points,
         bool lighting
     );
+
+    static model::Model loadCustomBlockModel(
+        const dv::value& primitives, const Assets& assets, bool lighting
+    );
 };
diff --git a/src/maths/UVRegion.hpp b/src/maths/UVRegion.hpp
index f7bdb2d0..b11db4aa 100644
--- a/src/maths/UVRegion.hpp
+++ b/src/maths/UVRegion.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <cmath>
+#include <glm/vec2.hpp>
 
 struct UVRegion {
     float u1;
@@ -33,4 +34,10 @@ struct UVRegion {
         u2 = u1 + uvw * w;
         v2 = v1 + uvh * h;
     }
+
+    inline glm::vec2 apply(const glm::vec2& uv) {
+        float w = getWidth();
+        float h = getHeight();
+        return glm::vec2(u1 + uv.x / w, v1 + uv.y / h);
+    }
 };
diff --git a/src/voxels/Block.cpp b/src/voxels/Block.cpp
index d94f6c82..86af4374 100644
--- a/src/voxels/Block.cpp
+++ b/src/voxels/Block.cpp
@@ -114,12 +114,8 @@ Block::Block(std::string name, const std::string& texture)
 void Block::cloneTo(Block& dst) {
     dst.caption = caption;
     for (int i = 0; i < 6; i++) {
-            dst.textureFaces[i] = textureFaces[i];
+        dst.textureFaces[i] = textureFaces[i];
     }
-    dst.modelTextures = modelTextures;
-    dst.modelBoxes = modelBoxes;
-    dst.modelExtraPoints = modelExtraPoints;
-    dst.modelUVs = modelUVs;
     dst.material = material;
     std::copy(&emission[0], &emission[3], dst.emission);
     dst.size = size;
@@ -143,7 +139,10 @@ void Block::cloneTo(Block& dst) {
     dst.inventorySize = inventorySize;
     dst.tickInterval = tickInterval;
     dst.overlayTexture = overlayTexture;
-    dst.particles = std::make_unique<ParticlesPreset>(*particles);
+    if (particles) {
+        dst.particles = std::make_unique<ParticlesPreset>(*particles);
+    }
+    dst.customModelRaw = customModelRaw;
 }
 
 static std::set<std::string, std::less<>> RESERVED_BLOCK_FIELDS {
diff --git a/src/voxels/Block.hpp b/src/voxels/Block.hpp
index d812e48f..74666a38 100644
--- a/src/voxels/Block.hpp
+++ b/src/voxels/Block.hpp
@@ -6,6 +6,7 @@
 #include <vector>
 #include <array>
 
+#include "data/dv.hpp"
 #include "maths/UVRegion.hpp"
 #include "maths/aabb.hpp"
 #include "typedefs.hpp"
@@ -116,12 +117,6 @@ public:
     /// @brief Textures set applied to block sides
     std::array<std::string, 6> textureFaces;  // -x,x, -y,y, -z,z
 
-    std::vector<std::string> modelTextures = {};
-    std::vector<BoxModel> modelBoxes = {};
-    // initially made for tetragons
-    std::vector<glm::vec3> modelExtraPoints = {};
-    std::vector<UVRegion> modelUVs = {};  // boxes' tex-UVs also there
-
     /// @brief id of used BlockMaterial, may specify non-existing material
     std::string material = DEFAULT_MATERIAL;
 
@@ -137,6 +132,9 @@ public:
     /// @brief Block model type
     BlockModel model = BlockModel::block;
 
+    /// @brief Custom model raw data
+    dv::value customModelRaw = nullptr;
+
     /// @brief Does the block passing lights into itself
     bool lightPassing = false;
 
diff --git a/src/voxels/Chunks.cpp b/src/voxels/Chunks.cpp
index a380aeda..53c436f3 100644
--- a/src/voxels/Chunks.cpp
+++ b/src/voxels/Chunks.cpp
@@ -597,8 +597,7 @@ glm::vec3 Chunks::rayCastToObstacle(
             if (def.obstacle) {
                 if (!def.rt.solid) {
                     const std::vector<AABB>& hitboxes =
-                        def.rotatable ? def.rt.hitboxes[voxel->state.rotation]
-                                      : def.modelBoxes;
+                        def.rt.hitboxes[voxel->state.rotation];
 
                     scalar_t distance;
                     glm::ivec3 norm;