LITIO - 3D Sheet metal unfolding software sharewareScreenshot 

LITIO is a sheet metal program that calculates flat (unfolded) sheet metal developments of ducts, rectangle to round transitions, cylinders, cones, pipe intersections, connections, bifurcations, elbows, etc. For HVAC, hoppers, cyclones, dust extraction, ducts, conveying systems, silos, piping, etc. To draw your sheet metal developments directly in AutoCAD R2000 and later (no need of DXF convertions).

 

Screenshot of LITIO - 3D Sheet metal unfolding software