There is a reason behind my subject line of this post, I really don't understand how to use a drawing tool where the drawing work can be lost. First off, thank you wandererfan (and others) for your work, none of my comments here are directed at you, you are working with what is available.
I'm hoping this can be a starting point to focus on drawings and there importance in CAD. I feel almost every CAD designer will agree that you can trash my model but the drawing has to be isolated in some way. Drawings are the root of manufacturing and they need to be preserved, at all cost. Models can always be recreated but it doesn't work the other way around, you can't recreate a model without the dimensions from a drawing.
So, to work, what is available and what can be done, here is one concept I can think of:
Concept #1) Once a drawing is created it can't be erased and nothing on it can be moved (after placed), items in the drawing can be deleted or added without a recompute. If you need to make a change to the model then you have to save the FreeCAD file, close it and open it once again. At opening a switch will need to be set to make drawing changes, normally the user would upgrade the part number of the file name at this point.
I don't know how to make this all happen but I think it handles the model changes, file saving, part number handling.
Last edited by freedman
on Fri Mar 08, 2019 6:05 pm, edited 1 time in total.