I'm having a scaling problem when using DEMto3D and extracting STL's for later manipulation.
I have a merged TIFF file for Australia and am attempting to extract models of each state so I can print out. I want to print each state individually and mount them on a frame later so the scale of each model is important.
CRS for everything is GDA94.
My workflow is as follows.
clipperto extract state raster (using state boundary shapofile) and input as a separate layer.
- Use Demto3d on each layer to extract the states to a STL.
Whilst I can get the models saved as STL without problems, when I try to assemble them in a 3d modelling program, they are about 5-7% different in size and do not line up.
Checking each TIFF file and overlaying in GIMP shows them aligning perfectly. DEMto3D settings are the same for each model as are the clipper settings.
There must be a projection or scaling issue but I cannot figure out, where exactly I went wrong. Nor understand why because everything I can find is set for GDA94.