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 compare mold making processes
Molding and casting

Individual assignment:
-Design a mold around the process you'll be using,
-produce it with a smooth surface finish that does not show the production process toolpath, and use it to cast parts

Steps to make a mold
1. Designed the Master Model

• Design an object to mold and 3D printed it
• Ensure surface is clean and smooth

2.Prepare the Master and Mold Box

• Printed the mold box to be used
• Clean the object and apply silicone mold
• Put it on the flat surface to avoid imbalance

3.Measure and Mix Silicone Rubber

• Use a 2-part silicone rubber kit
• Mix Parts A and B thoroughly with the ratio: 1:1
• Stir slowly to avoid air bubbles

4.Degas the Silicone (Optional)

• Use a vacuum chamber for ~2 minutes
• Let bubbles rise and collapse before pouring

5.Pour the Silicone into the Mold Box

• Pour slowly from one corner in a thin stream
• Let silicone flow around the object naturally
• Tap or shake mold box gently to release bubbles

6.Cure the Silicone Mold

• Let the silicone cure undisturbed for 4–24 hours
• Time depends on product and room temperature

7.De-mold the Silicone

• Remove mold box
• Carefully extract the master
• Trim excess material or flash

8.Mold Ready for Casting

• Apply mold release before each casting
• Pour resin, wax, soap, or other materials, here I used epoxy in a ratio of 100:45g

• Allow curing before de-molding the final part


• The master piece and the Copy
  

Code file to test
Master model
Mold
3D print