I purchased QCAD in 2010 and learned little by little to make some drawings of parts that I let produce at companies with laser cutting or water jet cutting. I send them a DXF file with the drawing.
This works in general when the original drawing has not been made by me and when I just add or remove something. But when I created drawings from scratch, my producers simply can not see anything in the DXF file that I send them. As example attache one of those files.
Can somebody somehow help me out of this frustrating situation? Try to keep it simple as I am not very strong in all this.