Computer-controlled cutting

#I used Kokopelli to desing the pieces. I created a rectangle with this parameters:

cad.mm_per_unit=1
ancho=40.
alto=40.
material=2.3
profundidad=8.
chaflan=.2
r1=rectangle(0,ancho,0,alto)

#the slots:

r1-=slot(ancho/2,alto,material,profundidad,0,chaflan)
r1-=slot(ancho,alto/2,material, profundidad,-90,chaflan)
r1-=slot(ancho/2,0,material, profundidad,--180,chaflan)
r1-=slot(0,alto/2,material, profundidad,-270,chaflan)
r1-=circle(ancho/2,alto/2,ancho/8)

#

#I used the Full-Spectrum Laser to cut the pieces

#Pieces after cut