puts "========================"
puts " OCC354 "
puts "(case 2)"
puts "========================"
puts ""
##################################################
## neither chamfer nor blend is built in similar situation 
##################################################

restore [locate_data_file OCC354b.brep] a 
explode a f

explode a_5 e

donl a a_5_6

chamf result a a_5_6 a_5 A 2 45
checkshape result

set square 589.268
set 2dviewer 0