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10. Molding and casting

Group assignments

  • Review the safety data sheets for each of your molding and casting materials
  • Make and compare test casts with each of them.

MSDS

Ferris green wax

WACKER®CATALYST T 40

Epoxy

Test casts

Mix in paper cups which also as molds.

Test for silicon

The side and bottom of test does not cured.

It probably because mixing issue.

Test for epoxy

Same mixing issue as silicone test, and need more time or hardener

Second test: the small bubble in cast is probably because higher temperature makes dissolved gas back to gas again. and thicken resin keeps it.