puts "========"
puts "OCC771"
puts "SAM1639"
puts "========"
puts ""
###########################
## Impossible fusung 3 shapes attached
###########################

restore [locate_data_file OCC771.brep] a 
explode a
checkshape a_1
checkshape a_2
checkshape a_3

bfuse res1 a_1 a_2

checkshape res1

bfuse result res1 a_3

set square 1306.68
set 2dviewer 0