Cone + is an extra cone facility as it includes:- 1- Duct with square base and circular top 2- Duct / hopper with square base and top 3- Duct / Pyramid or hopper with rectangular base and top 4- Pyramid with square base - Just enter the data which include the sheet thickness - The app is supported with common metal like Steel , cooper and aluminum - The app also supported with mm and inch units - The app export the drawing as jpg picture - The app export the drawing as dxf file for autocad or