Notes:

Draft Angle Guidelines

• 1 degree per side recommended
  
• 1/2 degree per side minimum
  
• Zero degree draft not recommended
  – can be accomplished in some cases such as
  short cores, thick parts or sleeve ejectors
  – can cause tool "lock-up" if not careful
  – discuss with your toolmaker
  

To increase moldability of a low draft part

• Polish in the direction of draw
• Improve cooling in the core
• Surface treat the mold steel
• Air poppet will break the vacuum