PLASTIC MOLDING DISCUSSION

SEYBERT CASTINGS HAS TWO PRIMARY METHODS FOR PRODUCING PROTOTYPE AND LOW VOLUME QUANTITIES OF PLASTIC PARTS. THE FIRST METHOD IS INJECTION MOLDING. SEYBERT PRODUCES INEXPENSIVE ALUMINUM TOOLING SUITABLE FOR MOST THERMOPLASTIC RESINS. TYPICAL MATERIALS ARE NYLON, ACETAL, ABS, AND THERMOPLASTIC URETHANE. TYPICAL LEAD TIME FOR ALUMINUM TOOLING AND SAMPLES IS 3 WEEKS. SEYBERT SPECIALIZES IN SMALLER PART SIZE APPLICATIONS.

THE SECOND METHOD USED AT SEYBERT CASTINGS FOR PROTOTYPING PLASTIC PARTS IS RUBBER MOLDING. SEYBERT UTILIZES ITS SPINCASTING AND RTV RUBBER MOLD TOOLING PROCESSES TO PRODUCE MOLDINGS IN URETHANE THERMOSET RESINS. TYPICAL LEAD TIME FOR URETHANE PROCESSES IS 2 WEEKS.

 
NASA TOOLGRIP ENCAPSULATION USING NON-OUTGASSING URETHANE.
 
HUBBLE SPACE TELESCOPE SERVICING MISSION 3B
 

HUBBLE'S POWERFUL VISION HAS UNRAVELED AGE-OLD MYSTERIES AND FORCED ASTRONOMERS TO RETHINK LONG-HELD BELIEFS. FROM BLACK HOLES TO THE SEARCH FOR NEW WORLDS, THE DISCOVERIES RAISE AS MANY QUESTIONS AS THEY ANSWER. HUBBLE'S MODULAR DESIGN ALLOWS SPACEWALKING ASTRONAUTS TO PERIODICALLY ADD NEW, STATE-OF-THE-ART EQUIPMENT. DURING THE 3B MISSION ASTRONAUTS INSTALLED THE ADVANCED CAMERA FOR SURVEYS,ENHANCING HUBBLE'S DISCOVERY POTENTIAL 10-FOLD. THE SOLAR ARRAYS WERE REPLACED BY SMALLER, STURDIER, MORE EFFICIENT ARRAYS. PROTECTIVE THERMAL PANELS WERE ATTACHED TO HUBBLE'S EXTERIOR, AND TWO NEW COOLING TOWERS WERE ADDED-ONE TO RESTORE HUBBLE'S INFRARED CAPABILITY. PLACED IN ORBIT ON APRIL 25, 1990, THE HUBBLE HAS UNDERGONE SUBSEQUENT MISSIONS IN 1993, 1997, AND 1999, WHERE ASTRONAUTS COMPLETED INSTRUMENT ENHANCEMENTS AND MAINTENANCE. SERVICING MISSION 4 IS SCHEDULED FOR 2004.

NASA TOOLGRIP ENCAPSULATION ASSEMBLED IN TOOL. (PLACE CURSOR OVER PICTURE FOR CLOSEUP OF BLUE TOOL IN USE.)