diff --git a/src/Mod/Assembly/App/AssemblyObject.cpp b/src/Mod/Assembly/App/AssemblyObject.cpp
index ee82a21e4e0c..6dad79caa079 100644
--- a/src/Mod/Assembly/App/AssemblyObject.cpp
+++ b/src/Mod/Assembly/App/AssemblyObject.cpp
@@ -92,25 +92,6 @@ FC_LOG_LEVEL_INIT("Assembly", true, true, true)
 
 using namespace Assembly;
 using namespace MbD;
-/*
-static void printPlacement(Base::Placement plc, const char* name)
-{
-    Base::Vector3d pos = plc.getPosition();
-    Base::Vector3d axis;
-    double angle;
-    Base::Rotation rot = plc.getRotation();
-    rot.getRawValue(axis, angle);
-    Base::Console().Warning(
-        "placement %s : position (%.1f, %.1f, %.1f) - axis (%.1f, %.1f, %.1f) angle %.1f\n",
-        name,
-        pos.x,
-        pos.y,
-        pos.z,
-        axis.x,
-        axis.y,
-        axis.z,
-        angle);
-}*/
 
 // ================================ Assembly Object ============================
 
@@ -1595,8 +1576,6 @@ std::string AssemblyObject::handleOneSideOfJoint(App::DocumentObject* joint,
     // containing Part.
 
     if (obj->getNameInDocument() != part->getNameInDocument()) {
-        // Make plc relative to the containing part
-        // plc = objPlc * plc; // this would not work for nested parts.
 
         auto* ref = dynamic_cast<App::PropertyXLinkSub*>(joint->getPropertyByName(propRefName));
         if (!ref) {
@@ -1839,9 +1818,6 @@ AssemblyObject::makeMbdPart(std::string& name, Base::Placement plc, double mass)
     Base::Vector3d r1 = mat.getRow(1);
     Base::Vector3d r2 = mat.getRow(2);
     mbdPart->setRotationMatrix(r0.x, r0.y, r0.z, r1.x, r1.y, r1.z, r2.x, r2.y, r2.z);
-    /*double q0, q1, q2, q3;
-    rot.getValue(q0, q1, q2, q3);
-    mbdPart->setQuarternions(q0, q1, q2, q3);*/
 
     return mbdPart;
 }
@@ -1862,9 +1838,7 @@ std::shared_ptr<ASMTMarker> AssemblyObject::makeMbdMarker(std::string& name, Bas
     Base::Vector3d r1 = mat.getRow(1);
     Base::Vector3d r2 = mat.getRow(2);
     mbdMarker->setRotationMatrix(r0.x, r0.y, r0.z, r1.x, r1.y, r1.z, r2.x, r2.y, r2.z);
-    /*double q0, q1, q2, q3;
-    rot.getValue(q0, q1, q2, q3);
-    mbdMarker->setQuarternions(q0, q1, q2, q3);*/
+
     return mbdMarker;
 }