diff --git a/mesh.cpp b/mesh.cpp
index fbe2fc6..68b7632 100644
--- a/mesh.cpp
+++ b/mesh.cpp
@@ -51,15 +51,14 @@ void SMesh::GetBounding(Vector *vmax, Vector *vmin) {
 }
 
 void SMesh::Simplify(int start) {
-#define MAX_TRIANGLES 2000
-    if(l.n - start > MAX_TRIANGLES) oops();
+    int maxTriangles = (l.n - start) + 10;
 
     STriMeta meta = l.elem[start].meta;
 
-    STriangle tout[MAX_TRIANGLES];
+    STriangle *tout = (STriangle *)AllocTemporary(maxTriangles*sizeof(*tout));
     int toutc = 0;
 
-    Vector n, conv[MAX_TRIANGLES*3];
+    Vector n, *conv = (Vector *)AllocTemporary(maxTriangles*3*sizeof(*conv));
     int convc = 0;
 
     int start0 = start;
@@ -181,6 +180,8 @@ void SMesh::Simplify(int start) {
     for(i = 0; i < toutc; i++) {
         AddTriangle(&(tout[i]));
     }
+    FreeTemporary(tout);
+    FreeTemporary(conv);
 }
 
 void SMesh::AddAgainstBsp(SMesh *srcm, SBsp3 *bsp3) {
diff --git a/solvespace.h b/solvespace.h
index ed66457..8e65c9c 100644
--- a/solvespace.h
+++ b/solvespace.h
@@ -101,6 +101,7 @@ DWORD CnfThawDWORD(DWORD v, char *name);
 float CnfThawFloat(float v, char *name);
 
 void *AllocTemporary(int n);
+void FreeTemporary(void *p);
 void FreeAllTemporary(void);
 void *MemRealloc(void *p, int n);
 void *MemAlloc(int n);
diff --git a/win32/w32main.cpp b/win32/w32main.cpp
index 3dedae6..cd2e635 100644
--- a/win32/w32main.cpp
+++ b/win32/w32main.cpp
@@ -120,6 +120,9 @@ void *AllocTemporary(int n)
     if(!v) oops();
     return v;
 }
+void FreeTemporary(void *p) {
+    HeapFree(Temp, HEAP_NO_SERIALIZE, p);
+}
 void FreeAllTemporary(void)
 {
     if(Temp) HeapDestroy(Temp);