I found an excellent web gl page from TD Hooper a while back which converts Signed distance functions into .stl mesh objects.
Heres a link to his page:
I dug up one of my older experiments of displacement from ShaderToy and managed to get it working. It took a while to find the right settings in the exporter as the model gets split up if its too large.
These parts were then stitched together in Blender and then rendered with the Cycles engine.
The next step will be preparing these to use in my DLP 3D printer