Had the need for something challenging. Decided to make a curved top trunk. Using my pencil sketches, made main "dovetailed "box as it was not the the challenge. Using a bent piece of wood to lay out lid. Then, fun began learning how to cooper the curve, cut/try failed. U Tube had a lot of useless advice, finally found a guy with layout and trig calculations. Found cooped side to be 29.4 degrees. Then digital gage died and had to order new one. Then on to final assembly. Constructed tray with finger joints and finally finished. Good education.