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UC Berkeley Mechanical Engineering Department

American Society of Mechanical Engineers at UC Berkeley


March 29 - April 11 2004

During Spring Break, we discovered more bubbles in the tale of the top female mold. After the adventure of attempting to repair the previous magically appearing bubble, on Saturday decided that rather than try to repair the bumps we would just make a new female mold for the top. So we reattached the flange and began the process to make the new mold. After spraying several layers of gelcoat, we painted on a nice blue layer... which proceeded bubble up, talking all the other layers of gelcoat with it. So we gelcoated again. On the final painted on layer the gelcoast again bubbled, but not a seriously and we were able to cut away the bubbled parts before doing the layer of polyester and glass. This means that the interior surface of the top female mold will be both gelcoat and polyester. The first layer of polyester and glass also had bubbles which had to be cut out and filled with a combination of polyester and mircospheres before proceeding with the next level of glass.

On the bottom fairing, using an industrial strength glue, Hysol, we attached the engine mounts to the car. We also did a layer of Nomex and unidirectional carbon.

The first lay-up of carbon, popped

A warning to all who pass

Attaching the engine mounts using Hysol

Our lovely blue Hysol

The April 5th incident... the gelcoat that bubbled

The third time we gelcoated the top

Some of the areas where bubbled gelcoat was removed

An example of the removed gelcoat

Nomex laying in the car

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