c-section using cad tools and saving as 3d moulding polyline...how do we make it

[adamjedgar]

i wanna draw some c-section channels to use on a metal framed shed. i have stuffed around for an hour trying to make the bloody things without any success.

i just realised the easiest way would be to create the 2d 4"x2" c-section shape using cad tools and then import that profile back into the mouldings part of the libary. i could then just draw a straight line and convert it to a 3d moulding, select the moudling type i have just made in cad and wella, i have my c section beam.

trouble is, i havent done that before.

any ideas?