Molding and casting
Group Assignment
review the safety data sheets for each of your molding and casting materials,
then make and compare test casts with each of them
extra credit: try other molding and casting processes
Individual Assignment
design a mold around the stock and tooling that you'll be using
mill it (rough cut + three-axis finish cut)
use it to cast parts
extra credit: use more then two mold parts
Group Assignment
Link for group assignment
Individual Assignment
Molding is a process to make a design of any hard object by compressing. Casting is melting of any metal and pouring in the design made by molding. Here is a youtube link to better understand. click me
Casting
Casting is an object made by pouring molten metal or other material into mold.
Design for molding and casting
For molding and casting i used fusion360 to design. I have designed the wheel of dharma and endless knot.
I drew a recctangle of width=40mm and length=120mm. Than i extrude 5mm.
I select a plane to sketch again. On top on plane I drew a sketch for wheel for dharma and endless knot.
Wheel of dharma
Endless knot
again i extrude 5mm on wheel and endless knot and export in .stl.
Medela Player
Open modela player software. click on file and open .stl file.
For size and orientation click on set and choose model. We can check the size- length, width and height of model
Click on the new process
I kept 5mm space between 4 sides of the block and 4 outerline of the design.
I need to do roughing and finishing process
For roughing
Gave process name roughing1
For Finishing
Gave process name as finishing1
Click on the cut to preview toolpath
Milling the molding block
I have made 2 files from modela player-4 for roughing and finishing the mill. The .stl file format is converted into prn format to fed to Vpanel
Z-axis should be 5mm above the surface
i used 2 kind of end-mill
1. 3.175sq for roughing
2. R1.5825 ball for finishing
I opened Vpanel Apps to mill the molding block
Molding
1. For molding i used silicon mold. Mixed partA and partB on equal ratio.
Pour Silicon partA and partB in a containter to mix. Pour slowly for not creating air bubbles inside
Mix partA and partB. Than pour it in wax mold that have been milled
Give vibration to remove the air bubbles by hitting slowing on wax
Silicon mold
Casting
I used hydro-stone and water for casting. The ratio is (hydro-stone)100 and (water)30.
Mix hydro-stone with water and pour it in silicon mold for casting
