I have a laser cutter and it's software (LaserCut) reads DXF files.
If I take a file created in AutoCad and load in to LaserCut, each of the layers are present and a remain as separate layers.
If I take the same file, load it in to QCad, make a minor change, save the file and load it in to LaserCut, all the layers have been flattened down to one layer. I then have to recreate each layer (in LaserCut) and reassign each polygon to it's correct layer.
If I create a new design in QCad, save the file and load it in to LaserCut, again all the layers have been flattened down to one layer.
Has anyone else seen this problem? Is it a known problem?
I am using QCad Profession 2.2.2.x running on Windows XP
EDIT: If I try and open the files that were created in QCad with QCad, the layer information is correct, so QCad understands files it has created.
What DXF specification/version is QCad using?