diff --git a/src/lib/several-builder.hpp b/src/lib/several-builder.hpp
index 8c3309a0e..ce5d69946 100644
--- a/src/lib/several-builder.hpp
+++ b/src/lib/several-builder.hpp
@@ -74,11 +74,12 @@ namespace lib {
         
         
     template<class I, template<typename> class ALO>
-    struct ElementFactory
+    class ElementFactory
       : private ALO<std::byte>
       {
         using Allo = ALO<std::byte>;
         using AlloT = std::allocator_traits<Allo>;
+        using Bucket = ArrayBucket<I>;
         
         Allo& baseAllocator() { return *this; }
         
@@ -93,10 +94,48 @@ namespace lib {
               return XAllo{};
           }
         
+        static size_t
+        calcSize (size_t cnt, size_t spread)
+          {
+            return sizeof(Bucket) - sizeof(Bucket::storage)
+                 + cnt * spread;
+          }
+        
+      public:
         ElementFactory (Allo allo = Allo{})
           : Allo{std::move (allo)}
           { }
         
+        Bucket*
+        create (size_t cnt, size_t spread)
+          {
+            size_t storageBytes = calcSize (cnt, spread);
+            std::byte* loc = AlloT::allocate (baseAllocator(), storageBytes);
+            
+            using BucketAlloT = typename AlloT::template rebind_traits<Bucket>;
+            auto bucketAllo = adaptAllocator<Bucket>();
+            try { BucketAlloT::construct (bucketAllo, loc, spread); }
+            catch(...)
+              {
+                AlloT::deallocate (baseAllocator(), loc, storageBytes);
+                throw;
+              }
+            return static_cast<Bucket*> (loc);
+          };
+        
+        template<class E, typename...ARGS>
+        E&
+        createAt (Bucket* bucket, size_t idx, ARGS&& ...args)
+          {
+            REQUIRE (bucket);
+            using ElmAlloT = typename AlloT::template rebind_traits<E>;
+            auto elmAllo = adaptAllocator<E>();
+            E* loc = & bucket->subscript (idx);
+            ElmAlloT::construct (elmAllo, loc, forward<ARGS> (args)...);
+            ENSURE (loc);
+            return *loc;
+          };
+        
         template<class E>
         void
         destroy (ArrayBucket<I>* bucket, size_t size)
@@ -107,9 +146,7 @@ namespace lib {
             for (size_t i=0; i<size; ++i)
               ElmAlloT::destroy (elmAllo, & bucket->subscript(i));
             
-            size_t storageBytes = sizeof(ArrayBucket<I>) - sizeof(ArrayBucket<I>::storage)
-                                + size * bucket->spread;
-        
+            size_t storageBytes = calcSize (size, bucket->spread);
             AlloT::deallocate (baseAllocator(), bucket, storageBytes);
           };
       };
diff --git a/src/lib/several.hpp b/src/lib/several.hpp
index 7da706306..cbe84be5b 100644
--- a/src/lib/several.hpp
+++ b/src/lib/several.hpp
@@ -48,15 +48,14 @@ namespace lib {
     template<class I>
     struct ArrayBucket
       {
-        union Manager
-          {
-            typedef void (*Deleter) (ArrayBucket*, size_t);
-            
-            bool unmanaged :1;
-            Deleter deleter;
-          };
+        ArrayBucket (size_t elmSize = sizeof(I))
+          : deleter{nullptr}
+          , spread{elmSize}
+          { }
         
-        Manager manager;
+        typedef void (*Deleter) (ArrayBucket*, size_t);
+        
+        Deleter deleter;
         size_t spread;
         
         /** mark start of the storage area */
@@ -145,8 +144,8 @@ namespace lib {
       void
       discardData()
         {
-          if (data_ and data_->manager.deleter)
-            (*data_->manager.deleter) (data_, size_);
+          if (data_ and data_->deleter)
+            (*data_->deleter) (data_, size_);
         }
     };
   
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index 6d8fab0e4..00d8c45cb 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -81952,9 +81952,9 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 <icon BUILTIN="idea"/>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1717596235650" ID="ID_608819565" MODIFIED="1717596532860" TEXT="Implementierung">
+<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1717596235650" ID="ID_608819565" MODIFIED="1717717682157" TEXT="Implementierung">
 <linktarget COLOR="#549cbc" DESTINATION="ID_608819565" ENDARROW="Default" ENDINCLINATION="152;866;" ID="Arrow_ID_190880203" SOURCE="ID_492608922" STARTARROW="None" STARTINCLINATION="-139;-10;"/>
-<icon BUILTIN="flag-yellow"/>
+<icon BUILTIN="pencil"/>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1717596241009" ID="ID_770727824" MODIFIED="1717596250200" TEXT="Erkennungs-Mechanismus">
 <icon BUILTIN="flag-yellow"/>
 </node>
@@ -81975,10 +81975,14 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 <icon BUILTIN="idea"/>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1717710799094" ID="ID_310099304" MODIFIED="1717710881440" TEXT="ObjectFactory">
-<linktarget COLOR="#867587" DESTINATION="ID_310099304" ENDARROW="Default" ENDINCLINATION="-927;146;" ID="Arrow_ID_1881268863" SOURCE="ID_342640598" STARTARROW="None" STARTINCLINATION="-107;-6;"/>
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1717710799094" ID="ID_310099304" MODIFIED="1717717678921" TEXT="ObjectFactory">
+<linktarget COLOR="#687a8b" DESTINATION="ID_310099304" ENDARROW="Default" ENDINCLINATION="-927;146;" ID="Arrow_ID_1881268863" SOURCE="ID_342640598" STARTARROW="None" STARTINCLINATION="-107;-6;"/>
+<icon BUILTIN="button_ok"/>
 <node CREATED="1717710834678" ID="ID_16117383" MODIFIED="1717710852024" TEXT="eine Variation der generischen StdFactory"/>
+<node CREATED="1717710923482" ID="ID_1281147725" MODIFIED="1717710954590" TEXT="nur da&#xdf; hier die Instanzen speziell gem&#xe4;&#xdf; Spread und Offset platziert werden m&#xfc;ssen"/>
+<node COLOR="#338800" CREATED="1717717650107" ID="ID_1819990017" MODIFIED="1717717676691" TEXT="bindet Kenntnis &#xfc;ber das Layout des ArrayBucket implizit ein">
+<icon BUILTIN="idea"/>
+</node>
 </node>
 </node>
 </node>
@@ -82256,10 +82260,11 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1717710755310" ID="ID_342640598" MODIFIED="1717710895137" TEXT="sinnvollerweise mit einer Allocator-Factory hinterlegen">
-<arrowlink COLOR="#867587" DESTINATION="ID_310099304" ENDARROW="Default" ENDINCLINATION="-927;146;" ID="Arrow_ID_1881268863" STARTARROW="None" STARTINCLINATION="-107;-6;"/>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1717710755310" ID="ID_342640598" MODIFIED="1717717695572" TEXT="sinnvollerweise mit einer Allocator-Factory hinterlegen">
+<arrowlink COLOR="#687a8b" DESTINATION="ID_310099304" ENDARROW="Default" ENDINCLINATION="-927;146;" ID="Arrow_ID_1881268863" STARTARROW="None" STARTINCLINATION="-107;-6;"/>
 <icon BUILTIN="flag-yellow"/>
-<node CREATED="1717710901355" ID="ID_718524980" MODIFIED="1717710916991" TEXT="das Meiste ist n&#xe4;mlich generische boilerplate"/>
+<node CREATED="1717710901355" ID="ID_718524980" MODIFIED="1717715225349" TEXT="das Meiste ist n&#xe4;mlich generische Boilerplate"/>
+<node CREATED="1717715255933" ID="ID_261113900" MODIFIED="1717715273774" TEXT="damit k&#xf6;nnte auch das Thema &#xbb;durchreichen des Basis-Allokators&#xab; generisch gel&#xf6;st werden"/>
 </node>
 </node>
 <node CREATED="1717543083078" ID="ID_530261806" MODIFIED="1717543114805" TEXT="getMover()"/>