Sliding variable capacitor

***UPDATED Frame V2. The original didn't have enough space for the geared plate holder to slide effectively after removing the supports. This now works properly. Haven't installed the plates themselves for testing of the capacitance yet.***

A variable capacitor designed to be approximately 10-120pF. I have not printed this yet, so it's all mathematical at this point. It is designed to use two 40mmx80mm pieces of aluminum flashing for the plates. I haven't had a chance to draw up the electrica