puts "========================"
puts " OCC354 "
puts "(case 1)"
puts "========================"
puts ""
##################################################
## neither chamfer nor blend is built in similar situation 
##################################################

restore [locate_data_file OCC354a.brep] a 

explode a e

blend result a 2 a_18
checkshape result

set square 593.527
set 2dviewer 0