restore [locate_data_file bug26917_double_cave_2.brep] s

offsetparameter 1e-7 c i
offsetload s 1
explode s f
offsetonface s_6 6
offsetonface s_12 6
offsetperform result

checkprops result -v 2376
checkprops result -s 1140

checknbshapes result -shell 1
