diff --git a/code/B3D/B3DImporter.cpp b/code/B3D/B3DImporter.cpp
index ba484ca00..b483ed752 100644
--- a/code/B3D/B3DImporter.cpp
+++ b/code/B3D/B3DImporter.cpp
@@ -117,20 +117,8 @@ const aiImporterDesc* B3DImporter::GetInfo () const
     return &desc;
 }
 
-#ifdef DEBUG_B3D
-    extern "C"{ void _stdcall AllocConsole(); }
-#endif
 // ------------------------------------------------------------------------------------------------
 void B3DImporter::InternReadFile( const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler){
-
-#ifdef DEBUG_B3D
-    AllocConsole();
-    freopen( "conin$","r",stdin );
-    freopen( "conout$","w",stdout );
-    freopen( "conout$","w",stderr );
-    cout<<"Hello world from the B3DImporter!"<<endl;
-#endif
-
     std::unique_ptr<IOStream> file( pIOHandler->Open( pFile));
 
     // Check whether we can read from the file
@@ -158,7 +146,7 @@ AI_WONT_RETURN void B3DImporter::Oops(){
 // ------------------------------------------------------------------------------------------------
 AI_WONT_RETURN void B3DImporter::Fail( string str ){
 #ifdef DEBUG_B3D
-    cout<<"Error in B3D file data: "<<str<<endl;
+    ASSIMP_LOG_ERROR_F("Error in B3D file data: %s", str.c_str());
 #endif
     throw DeadlyImportError( "B3D Importer - error in B3D file data: "+str );
 }
@@ -238,7 +226,7 @@ string B3DImporter::ReadChunk(){
         tag+=char( ReadByte() );
     }
 #ifdef DEBUG_B3D
-//	cout<<"ReadChunk:"<<tag<<endl;
+    ASSIMP_LOG_DEBUG_F("ReadChunk: %s", tag.c_str());
 #endif
     unsigned sz=(unsigned)ReadInt();
     _stack.push_back( _pos+sz );
@@ -392,47 +380,47 @@ void B3DImporter::ReadVRTS(){
 }
 
 // ------------------------------------------------------------------------------------------------
-void B3DImporter::ReadTRIS( int v0 ){
-    int matid=ReadInt();
-    if( matid==-1 ){
-        matid=0;
-    }else if( matid<0 || matid>=(int)_materials.size() ){
+void B3DImporter::ReadTRIS(int v0) {
+	int matid = ReadInt();
+	if (matid == -1) {
+		matid = 0;
+	} else if (matid < 0 || matid >= (int)_materials.size()) {
 #ifdef DEBUG_B3D
-        cout<<"material id="<<matid<<endl;
+		ASSIMP_LOG_ERROR_F("material id=%d", matid);
 #endif
-        Fail( "Bad material id" );
-    }
+		Fail("Bad material id");
+	}
 
-    std::unique_ptr<aiMesh> mesh(new aiMesh);
+	std::unique_ptr<aiMesh> mesh(new aiMesh);
 
-    mesh->mMaterialIndex=matid;
-    mesh->mNumFaces=0;
-    mesh->mPrimitiveTypes=aiPrimitiveType_TRIANGLE;
+	mesh->mMaterialIndex = matid;
+	mesh->mNumFaces = 0;
+	mesh->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
 
-    int n_tris=ChunkSize()/12;
-    aiFace *face=mesh->mFaces=new aiFace[n_tris];
+	int n_tris = ChunkSize() / 12;
+	aiFace *face = mesh->mFaces = new aiFace[n_tris];
 
-    for( int i=0;i<n_tris;++i ){
-        int i0=ReadInt()+v0;
-        int i1=ReadInt()+v0;
-        int i2=ReadInt()+v0;
-        if( i0<0 || i0>=(int)_vertices.size() || i1<0 || i1>=(int)_vertices.size() || i2<0 || i2>=(int)_vertices.size() ){
+	for (int i = 0; i < n_tris; ++i) {
+		int i0 = ReadInt() + v0;
+		int i1 = ReadInt() + v0;
+		int i2 = ReadInt() + v0;
+		if (i0 < 0 || i0 >= (int)_vertices.size() || i1 < 0 || i1 >= (int)_vertices.size() || i2 < 0 || i2 >= (int)_vertices.size()) {
 #ifdef DEBUG_B3D
-            cout<<"Bad triangle index: i0="<<i0<<", i1="<<i1<<", i2="<<i2<<endl;
+			ASSIMP_LOG_ERROR_F("Bad triangle index: i0=%d, i1=%d, i2=%d", i0, i1, i2);
 #endif
-            Fail( "Bad triangle index" );
-            continue;
-        }
-        face->mNumIndices=3;
-        face->mIndices=new unsigned[3];
-        face->mIndices[0]=i0;
-        face->mIndices[1]=i1;
-        face->mIndices[2]=i2;
-        ++mesh->mNumFaces;
-        ++face;
-    }
+			Fail("Bad triangle index");
+			continue;
+		}
+		face->mNumIndices = 3;
+		face->mIndices = new unsigned[3];
+		face->mIndices[0] = i0;
+		face->mIndices[1] = i1;
+		face->mIndices[2] = i2;
+		++mesh->mNumFaces;
+		++face;
+	}
 
-    _meshes.emplace_back( std::move(mesh) );
+	_meshes.emplace_back(std::move(mesh));
 }
 
 // ------------------------------------------------------------------------------------------------
@@ -453,29 +441,23 @@ void B3DImporter::ReadMESH(){
 }
 
 // ------------------------------------------------------------------------------------------------
-void B3DImporter::ReadBONE( int id ){
-    while( ChunkSize() ){
-        int vertex=ReadInt();
-        float weight=ReadFloat();
-        if( vertex<0 || vertex>=(int)_vertices.size() ){
-            Fail( "Bad vertex index" );
-        }
+void B3DImporter::ReadBONE(int id) {
+	while (ChunkSize()) {
+		int vertex = ReadInt();
+		float weight = ReadFloat();
+		if (vertex < 0 || vertex >= (int)_vertices.size()) {
+			Fail("Bad vertex index");
+		}
 
-        Vertex &v=_vertices[vertex];
-        int i;
-        for( i=0;i<4;++i ){
-            if( !v.weights[i] ){
-                v.bones[i]=id;
-                v.weights[i]=weight;
-                break;
-            }
-        }
-#ifdef DEBUG_B3D
-        if( i==4 ){
-            cout<<"Too many bone weights"<<endl;
-        }
-#endif
-    }
+		Vertex &v = _vertices[vertex];
+		for (int i = 0; i < 4; ++i) {
+			if (!v.weights[i]) {
+				v.bones[i] = id;
+				v.weights[i] = weight;
+				break;
+			}
+		}
+	}
 }
 
 // ------------------------------------------------------------------------------------------------
diff --git a/code/FBX/FBXConverter.cpp b/code/FBX/FBXConverter.cpp
index d8a22d9f7..1956c3fb4 100644
--- a/code/FBX/FBXConverter.cpp
+++ b/code/FBX/FBXConverter.cpp
@@ -1597,11 +1597,10 @@ namespace Assimp {
             aiBone *bone = nullptr;
 
             if (bone_map.count(deformer_name)) {
-                std::cout << "retrieved bone from lookup " << bone_name.C_Str() << ". Deformer: " << deformer_name
-                          << std::endl;
+                ASSIMP_LOG_DEBUG_F("retrieved bone from lookup %s. Deformer:%s", bone_name.C_Str(), deformer_name.c_str());
                 bone = bone_map[deformer_name];
             } else {
-                std::cout << "created new bone " << bone_name.C_Str() << ". Deformer: " << deformer_name << std::endl;
+                ASSIMP_LOG_DEBUG_F("created new bone %s. Deformer: %s", bone_name.C_Str(), deformer_name.c_str());
                 bone = new aiBone();
                 bone->mName = bone_name;
 
@@ -1648,7 +1647,7 @@ namespace Assimp {
                 bone_map.insert(std::pair<const std::string, aiBone *>(deformer_name, bone));
             }
 
-            std::cout << "bone research: Indicies size: " << out_indices.size() << std::endl;
+            ASSIMP_LOG_DEBUG_F("bone research: Indicies size: %zu", out_indices.size());
 
             // lookup must be populated in case something goes wrong
             // this also allocates bones to mesh instance outside
diff --git a/code/LWO/LWOLoader.cpp b/code/LWO/LWOLoader.cpp
index 1e5b92c32..242538056 100644
--- a/code/LWO/LWOLoader.cpp
+++ b/code/LWO/LWOLoader.cpp
@@ -586,7 +586,6 @@ void LWOImporter::GenerateNodeGraph(std::map<uint16_t,aiNode*>& apcNodes)
     root->mName.Set("<LWORoot>");
 
     //Set parent of all children, inserting pivots
-    //std::cout << "Set parent of all children" << std::endl;
     std::map<uint16_t, aiNode*> mapPivot;
     for (auto itapcNodes = apcNodes.begin(); itapcNodes != apcNodes.end(); ++itapcNodes) {
 
@@ -618,7 +617,6 @@ void LWOImporter::GenerateNodeGraph(std::map<uint16_t,aiNode*>& apcNodes)
     }
 
     //Merge pivot map into node map
-    //std::cout << "Merge pivot map into node map" << std::endl;
     for (auto itMapPivot = mapPivot.begin(); itMapPivot != mapPivot.end(); ++itMapPivot) {
         apcNodes[itMapPivot->first] = itMapPivot->second;
     }
diff --git a/include/assimp/LineSplitter.h b/include/assimp/LineSplitter.h
index 6c1097bb6..271b321cc 100644
--- a/include/assimp/LineSplitter.h
+++ b/include/assimp/LineSplitter.h
@@ -72,7 +72,7 @@ for(LineSplitter splitter(stream);splitter;++splitter) {
        if (strtol(splitter[2]) > 5) { .. }
     }
 
-    std::cout << "Current line is: " << splitter.get_index() << std::endl;
+    ASSIMP_LOG_DEBUG_F("Current line is: %zu", splitter.get_index());
 }
 @endcode
 */