Injection Molding: Cost Data Tab

Variable Definitions, Ranges and Default Values

The following table shows a brief description of the variables appearing in this tab. The table also displays their default values and their generally acceptable range:

Variable	Default Value	Range

○ Engineering Design Cost ($)	15,000	Positive or Zero
◙ Material and Machining Cost ($)	0	Positive or Zero
○ Unit Cost of Mold Material ($/kg)	12.0	Positive
● Material Cost Per Mold Set ($)	0.0	Positive
○ Spares (%)	10.0	Positive
○ Machining Difficulty	Moderate	List
● Tip Cost ($)	0	Positive
● Controller (Gamma Flux) Cost ($)	0	Positive
○ Set Total Hot Runner Cost Check this box to set the total hot runner cost.	No	Yes/No
◙ Total Hot Runner Cost ($)	0	Positive
● Total Cost Per Mold Set ($)	0.0	Positive
○ Consider Mold Replacement Cost Check this box to consider the mold replacement cost.	No	Yes/No
◙ Operating Time (years)	3.0	Positive
◙ Number of Cycles (shots)	5,000,000	Positive
○ Capitalize Cost of First Mold Set Check this box to capitalize the cost of the first mold set.	No	Yes/No
○ Power Type Indicates the power type that is used by the operation. Click on the list box to bring up a list of available power types in order to select one.	<Std Power>	Any Power Type
○ Power Requirement for Molding Operation (kW)	0.0	Positive

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output

Specification Choices / Comments

The following list describes the available specification choices in this tab; for more details on how these are implemented, see Injection Molding: Modeling Calculations.

•Material and Machining Cost Options...

The material and machining cost is either specified by the user or calculated by the program (the default option) based on the machining difficulty and the size of the mold.

•Hot Runner Cost Options...

The hot runner cost is either calculated (the default) as the sum of the tip and controller cost or set by the user.

•Mold Replacement Cost Options...

The cost for the periodic replacement of molds (usually, every 2-5 years) can be considered as a consumable cost or ignored. The replacement frequency can be specified either in operating years or number of cycles (also known as shots).

•First Mold Set Expense Options...

The expense for the first mold set can be considered a capital expense and depreciated. By default this does not happen.