Definition of Pattern part-4

10. Follow Board Pattern:

 Follow Board Pattern

Follow board pattern consists of tool that's an easy wooden board which is employed for several reasons. The wooden board is employed as a base in follow board pattern for molding process. This pattern is employed in processes where casting structures are weak and that they may break after the appliance of force.

11. Segmental Pattern:

 Segmental Pattern

It is just an identical thereto of sweep pattern. The working structure of segmental pattern and sweep pattern is nearly similar. For designing require shape or structure of mold they both employ a neighborhood of pattern. As the name suggest segmental pattern is in the form of segments and used for molding circular or round structures. In sweep pattern there's complete rotation but in segmental pattern there's no complete rotation. For creating mold, we will rotate partly to urge required output.

12. Shell Pattern:

 Shell Pattern

Shell pattern is specially used for obtaining hollow shaped structure. Along the center the parting process is done. The resultant halves produced after parting are both doweled. In casting, above mentioned patterns play crucial role. So we've to make a decision which pattern we should always use consistent with requirements.