OCCT

pload XDE

stepread [locate_data_file bug29481_L3.step] s *

copy s_1 s
explode s f

compound s_20 feature1
compound s_16 feature2
compound s_17 s_18 s_19 feature3
compound feature1 feature2 feature3 gap

removefeatures res1 s feature1 feature2
checkshape res1
checkprops res1 -s 2387.88 -v 1060.71 -deps 1.e-7
checknbshapes res1 -vertex 65 -edge 97 -wire 34 -face 34 -shell 1 -solid 1
CheckIsFeatureRemoved feature1 {v e f}
CheckIsFeatureRemoved feature2 {v e f}

removefeatures res2 s feature3
checkshape res2
checkprops res2 -s 2391.13 -v 1064.08 -deps 1.e-7
checknbshapes res2 -vertex 63 -edge 94 -wire 33 -face 33 -shell 1 -solid 1
CheckIsFeatureRemoved feature3 {v e f}

removefeatures res3 s gap
checkshape res3
checkprops res3 -s 2392.93 -v 1065.38 -deps 1.e-7
checknbshapes res3 -vertex 57 -edge 85 -wire 30 -face 30 -shell 1 -solid 1
CheckIsFeatureRemoved gap {v e f}