Casting Metal Babbitt tutorial

Making the Mold

MoldMax 60 is suitable for higher temperatures than Oommoo. However it takes longer to set, and is more toxic. MSDS. Technical Bulliten.

• Silicon rubber compound (red, 100 parts mass)
• Tin based curing agent (blue, 3 parts mass)
• Mix together at 100 parts red to three parts blue

• Do the mixing under the ventilation hood
• Mix the silicon compound and curing agent into a third cup.
• Mix Mix Mix - until completely blended together >= 5 minutes?

• pot life - 40 min - after mixing, you have 40 minutes to pour the mold
• de-mold - 24 hours - after pouring the mold you must wait 24 hours before the mold has finished setting

Pouring the Metal Babbitt

• You need a partner to pour metal
• General casting advice: Think about the pants and shoes that you are wearing
• Place the mold on a piece of scrap metal on the metal table under the adjustable ventilation hood

• Place in the babbitt in the crucible, and melt it in the furnace
  • 700 Fahrenheit
  • 30-60 minutes in the furnace

Practice the choreography before actually pouring. This is a complex action -- make sure you understand what needs to happen before you actually take the crucible out of the furnace

• Open the furnace and take the crucible out with the tongs
• Carefully move the crucible to the table adjacent to the mold
• Here your partner wearing gloves will spoon the [JUNK] off the top of the melted babbitt and set it in the metal place next to your mold
• Pour the melted babbitt