Best tool for productivity improvement?

[asport22]

I know that these airplanes can be built with minimal tools, but after spending about 3 hours making 2 small U-brackets today, I'm thinking about acquiring a productivity-enhancing metalworking tool or two. Other than a hammer to smash this computer, what tools would you guys suggest? What tool saves you the most time on the metalwork portion of biplane building?

Thanks!

Warren

 

[taildraggerpilot]

 

[Dana]

 

[TFF1]

 

[Cameron]

 

[Vic Zubot]

 

[LauraJ]

 

[asport22]

 

[LauraJ]

 

[Randy]

 

[taildraggerpilot]

 

[Knight Twister]

 

[Dana]

 

[asport22]

 

[cwilliamrose]

 

[taff]