diff --git a/src/sand-wedge-data/mygrid.cc b/src/sand-wedge-data/mygrid.cc
index 6cda76f6089669059937a1943f66255558a30c0f..d19e91d60756515b6f8c321fc62ee530d21afae3 100644
--- a/src/sand-wedge-data/mygrid.cc
+++ b/src/sand-wedge-data/mygrid.cc
@@ -48,24 +48,7 @@ template <class Grid> GridConstructor<Grid>::GridConstructor() {
   auto const &B = MyGeometry::B;
   auto const &C = MyGeometry::C;
 
-  auto const AB = midPoint(A, B);
-  auto const AC = midPoint(A, C);
-  auto const BC = midPoint(B, C);
-
-  auto const AAB = midPoint(A, AB);
-  auto const ABB = midPoint(AB, B);
-
-  auto const AAC = midPoint(A, AC);
-  auto const ACC = midPoint(AC, C);
-
-  auto const BBC = midPoint(B, BC);
-  auto const BCC = midPoint(BC, C);
-
-  auto const ABAC = midPoint(AB, AC);
-  auto const ABBC = midPoint(AB, BC);
-  auto const ACBC = midPoint(AC, BC);
-
-  unsigned int const vc = 15;
+  unsigned int const vc = 3;
 
 #if MY_DIM == 3
   Dune::FieldMatrix<double, 2 * vc, MY_DIM> vertices;
@@ -81,19 +64,7 @@ template <class Grid> GridConstructor<Grid>::GridConstructor() {
     size_t k = 0;
     for (size_t j = 1; j <= numXYplanes; ++j) {
       vertices[k++][i] = A[i];
-      vertices[k++][i] = AAB[i];
-      vertices[k++][i] = AB[i];
-      vertices[k++][i] = ABB[i];
       vertices[k++][i] = B[i];
-      vertices[k++][i] = AAC[i];
-      vertices[k++][i] = ABAC[i];
-      vertices[k++][i] = ABBC[i];
-      vertices[k++][i] = BBC[i];
-      vertices[k++][i] = AC[i];
-      vertices[k++][i] = ACBC[i];
-      vertices[k++][i] = BC[i];
-      vertices[k++][i] = ACC[i];
-      vertices[k++][i] = BCC[i];
       vertices[k++][i] = C[i];
       assert(k == j * vc);
     }
@@ -121,28 +92,7 @@ template <class Grid> GridConstructor<Grid>::GridConstructor() {
 #else
   SimplexManager sm;
 #endif
-  // bottom row
-  sm.addFromVerticesFFB(1, 5, 0);
-  sm.addFromVerticesFFB(2, 6, 1);
-  sm.addFromVerticesFFB(3, 7, 2);
-  sm.addFromVerticesFFB(4, 8, 3);
-
-  sm.addFromVerticesFBB(6, 5, 1);
-  sm.addFromVerticesFBB(7, 6, 2);
-  sm.addFromVerticesFBB(8, 7, 3);
-
-  // the wheel
-  sm.addFromVerticesFBB(10, 9, 6);
-  sm.addFromVerticesFBB(10, 12, 9);
-  sm.addFromVerticesFBB(10, 13, 12);
-  sm.addFromVerticesFBB(10, 11, 13);
-  sm.addFromVerticesFBB(10, 7, 11);
-  sm.addFromVerticesFBB(10, 6, 7);
-
-  // the three surrounders
-  sm.addFromVerticesFBB(6, 9, 5);
-  sm.addFromVerticesFBB(11, 7, 8);
-  sm.addFromVerticesFBB(12, 13, 14);
+  sm.addFromVerticesFFB(1, 2, 0);
   auto const &simplices = sm.getSimplices();
 
   // sanity-check choices of simplices