Universitas Atma Jaya Yogyakarta’s present
attention to reduce dependency of relying mass
production on subcontractor has encouraged the research
of application spin casting technology. Spin casting
technology has known as rapid tooling technology with
some advantages in running mass production and
capability in achieving intricate design.
The present spin casting machine was evaluated and
redesigned to enhance the reliability of producing good
quality of souvenirs made from tin. The evaluation was
started by constructing Functional Decomposition
Diagram. Afterward, the decomposed part list was
classified to its critical function based on Function
Analysis. Failure Modes Effects Analysis (FMEA) was
performed to evaluate failures of current machine. Those
failures were become input for redesign process.
Mechanical Design Procedure, Grid Analysis, and Tree
Diagram were performed during redesign process. Some
defects were found during experimental works of “UAJY”
keychain using the new spin casting machine. The Cause
and Effect Diagram was performed to find best solution
to solve related problems.
By the end of the research, spin casting machine
with dimension 500mm x 600mm x 862mm; operating speed at
460 rpm; maximum silicone rubber dimension Ø300mmx40mm ;
electricity power 373 W and UAJY keychain product were
obtained. The production time is 12,15 minutes and the
machine cost is IDR 3,529.6/hour.