Placa militar conmemorativa

Jimmy decidió aprovechar sus habilidades con el fresador CNC y diseñó y talló una magnífica placa 3D de 1,2 metros de diámetro que representa el sello de los Estados Unidos junto con todos los emblemas militares estadounidenses.

Tras preparar y presentar su diseño conceptual a amigos y miembros del foro de ShopBot, Jimmy decidió ampliarlo para incluir texto grabado para cada uno de los emblemas de las fuerzas armadas y añadir un borde decorativo de cuerda en 3D.

James Booth, de Vector Art 3D, modeló los emblemas militares, y Jimmy utilizó Aspire para integrarlos en su diseño y añadir el texto y las trayectorias de herramienta necesarias.

Jimmy comentó: «Las herramientas de modelado 3D y previsualización de trayectorias de herramienta de Aspire me mostraron con exactitud cómo quedaría la placa en todas las fases del diseño y el proceso de corte.

Esto me dio la seguridad de que lo que veía en la pantalla del ordenador sería exactamente lo que se tallaría en mi fresadora CNC ShopBot».Jimmy enlisted the help of his friend Rick Boyce who very generously gave his time to paint and finish the plaque.

Giving a plaque to the VA sounds easy and straightforward, but being a government establishment meant Jimmy first had to get approval to do this.

So he wrote to the VA explaining what he would like to do and included photo’s of his proposed plaque. The VA decided this was an excellent idea and the project was quickly approved by the Chief of the Voluntary Service Janet S Longhorne.

Jimmy then set to work machining the plaque on his CNC router.

On 26th of May 2009 Jimmy, his wife and Rick the painter presented the plaque at the Medical Center and the ceremony was attended by many Veterans.

This truly amazing plaque will serve as a permanent reminder to all and can be seen in the reception hall at McGuire VAMC, Richmond,
VA 23249.Jimmy wishes to thank everyone who helped with the project and he said "The most important tool was his friends and fellow forum members for their inspiration and design ideas that helped make the plaque such a great success".

The 3D plaque was routed on Jimmy's ShopBot CNC router from 48" x 48" x 1 1/2" thick foam board using the following tools.

1/4" end mill cutter with a 22 degree included angle V-bit to pocket out the top surface and engrave the details raised lettering, and this took around 4 hours to machine.

1/8" diameter rounded ball nose cutter to 3D machine the 3D POW MIA seal and military emblems that took 10 hours.

The recessed text inscriptions below each military emblem were engraved using a 60 degree included angle engraving cutter and this took around 30 minutes to machine.

Finally the raised 3D rope border was machined using a 1/4" ball nose cutter and took approximately 4 hours.

To see more of Jimmy's work visit his web site by clicking here
>