Revert "add mid plane"

This reverts commit b17699e51d44d5e2e36b8693984d3d0d860e9db8.
Revert "Merge branch 'Extruded_Frame_round'"

This reverts commit cd9eb04ea600f33883afac29ed1e9690a6f1f36b, reversing
changes made to 877f4b47a8f4149bd21f301e4a7c1aa9ba9fec65.
Revert 0aa6e72..c3a0772

This rolls back to commit 0aa6e72223ce4eb42ad6fb5818c858e98f14cf35.
Revert 877f4b4..8c0c617

This rolls back to commit 877f4b47a8f4149bd21f301e4a7c1aa9ba9fec65.
mograte to 10.2013

This reverts commit 324195a05ffbb8f900983c40e94ed75cf0d309be.