Converting Cardboard to DXF

[AdieR]

You don't need to scan the individual segments of the pipe - if you have a good sheetmetal working place (who has skilled sheetmetal workers) place nearby you can supply the dimensions of the pipe as an entire item and they'll be able to work it out with relative ease. If need be, they should be able to roll and weld the cut segments as well.

What CAD program/s are you using?

[Yow Ling]

Hi AdierR, Im using a 2 stroke engine simulation program called MOTA, it has a utility for designing pipe segments.
there is a free demo you can download, from http://www.iwt.com.au/MOTA.HTM the pipe designing part is not crippled or restricted.
Can be usefull for other general stuff.
A sheetmetal place would charge too much as there is a ton of welding, lasercutting seems to be theway to go as it doesnt get distracted