Hi Dr PR
Thanks for that.
If technically it can't be done then I will stop worrying about.
However my main problem is reading these files not generating them. Therefore a follow up question would be; I can see that a propriety format would prevent writing but does it cover reading.
I have alternative idea. ( I am more than a little ignorant here so be gentle ) .STEP files are 3D in nature I think.
I produce a lot of 2D production drawings of machined components and only use 3D models to solve complex assembly/clash issues. I can think in 3D I don't need a computer to do it for me.
My immediate problem.
The .Step files are given to me for third party dimensional information, how I am to fit with existing equipment, etc.
Academics consider themselves to be accomplished mechanical engineers because , well, how difficult can it be! They put together a model on their academic licence ProEngineer and send it to me. There are so many ways to mess up a CAD file with poor drafting, bloated point count, for these reasons most downloaded models are unusable.
Actually it would be more useful to have 2D orthogonal projections of 3D .STEP files. Like the very useful DCAD SaveAs 2D Projection feature.
I could get the dimensions I need and over draw accurate scale drawings.
Well this reads a lot like me, me, me, as it's a solution to my problems; but it would allow the use of these ubiquitous .STEP files in a practical way.