Second floor of perspex model and new design

Today I have been working on the second floor of my model, the design I have is a triangle design for two walls which will be in the middle of the design

In the middle of these two walls I need to cut out two triangle tables which I will design on google sketch up.

To get a perfect finish, I have to sand for approimatly 10 minuites using sand paper and the buffing machine. I will continue to do this on every piece of perspex I make. This process at times has become challenging because of the amount of sanding and buffing which has needed to be done. But overall the outcome of the perspex is worth the sanding because of its smooth finish and attractive look.