Customized version of http://www.thingiverse.com/thing:2446160

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=2446160

Using the following options:

ich = 1
YstBreak = [ich,och,ird,ord,of]
orient = [0,0,-90]
helpZ = 666
helpY = 666
helpX = 666
XstBreak = [0,0,0,0,of]
ZallBreak = [3,3,0.3,0.3,of]
ird = 0.5
och = 1
XallBreak = [3,3,0.3,0.3,of]
Z = 12
Y = 120
X = 40
of = 0.1
XhoBreak = [0,0,0,0,of]
ord = 0.5
Zholes = [[X/2, 12.8, 5.7],[[X/2,12.8, 3],[X/2,-10.8, 3]]]
Xholes = [[Y-21.5,-4.7,6],[Y-21.5,Z+4.7,6]]
Xstock = [Y,Z ]
Ystock = [ [[0,0],[X,0],[X,Z],[0,Z]]]
ZhoBreak = [ich,0,ird,0,of]
YhoBreak = [ich,0,ird,0,of]
ZstBreak = [ich,och,ird,ord,of]
Zstock = [ [[0,0],[X,0],[X,Y- 12.82],[0,Y- 12.82]],[X/2,Y-12.8, 5.7],[[X/2,Y-12.8, 3],[X/2,0, 3]]]
Yholes = [[[6,Z-1,2],[8,Z-1,2]],[[34,Z-1,2],[32,Z-1,2]],[[6,1,2],[8,1,2]],[[34,1,2],[32,1,2]]]
$fn = 70
YallBreak = [0.8,0.8,0.3,0.3,of]