-This week i designed a table out of recycled material got them from the trash on the heavy garbage collection day. I fought for a heavy  
MDF sheet, which didn't suit my first design, the material was too heavy for it so i had to change the design to this one.
i started the model in RHINO4.0 designing the layout of the mass. Then with the help of 123D make i managed to slice it into interlocking
layers.  

With 123D Make i managed to slice the mass into 4 horizontal layer which acts as shelves in my design and two vertical ones which will be the
supporters. You can rotate the slices or move them on the 123D make as u wish till your satisfied with the design, you can also control their
count and control the spacing distance between them if needed
After that i exported the 123D proposal as a DXF i edited the layout outline of the layers to make the mass more dynamic, this step is only for
the design in other words i didn't need it, i went for it only for the final looking mass 

      After that came the machine calibration. Since its a milling machine so it works with the basics. you have to calibrate XYZ according to
your file where  both the X,Y done manually with the left and right buttons of the computer while in Z the machine has to calibrate it
itself using a metal sheet and a sensor by placing this pad below the pin it keeps on going down till the sensor feels the pad and it stops,
after that it automatically subtracts the pad's thickness from the Z calibration. you also get to choose this to be the Z above or below your
surface it's your call while celebrating
Also choose the suitable pin according to your design (smooth or edgy/thin or bold) while milling the machine mill in layers each is deeper
which you previously set while the calibration, one option this machine does is that it can drill though a slope which you also previously set it
The machine moves in three types of motion INSIDE OUT, OUTSIDE IN or ON THE LINE. you have to separate your design lines into consideration
to that order, also into consideration to the pin's radius so as not to eat much from your design

CALIBRATION
You will use screws to hold the pad while milling it has to be in certain places where the
machine will not move through while milling your design because THE MACHINE CAN NOT
 DRILL THROUGH METAL BODIES, and in case the pin met a metal body while moving BOOM
 the machine will crash so MAKE SURE YOUR BOARD IS CLEAN AND CLEAR OF ALL METAL
 BODIES second thing the machine will drill the inside out then the out side in respectively.
 during the job you can accelerate the drilling speed from the board on the side of the machine
 you can also click on the RED button to stop the job at anytime

ERROR

The machine wasn't cutting through although we did the Z direction more than the material
 thickness still it didn't cut through. i had to stop the design and re-measure my board more
 than once from different sides and edges and found out that the board wasn't flat i took average
of the heights and changed the slots thickness in the design so as the depth of the drilling.
AS LONG AS YOU HAVE A SACRIFICE MATERIAL SHEET below your material it's okay to go 3
to 4 mm more than your material's depth so as to get a clean cut and avoid not cutting through jobs

After that the job went just fine, TIP don't remove the parts while the machine is working it's better to wait till the end of the
job it helps balancing the material while working

After finishing un-drill the fixing screws then remove your board clean all the mess, the start cleaning your parts edges before
 the assembly