Glass 3D Printing
- Stereolithography for glass printing at low temperature. Glass s then fired. 
- Paper in Nature - 
- Can this be also done with 3D printing (plastic binder for glass) where the glass is then fired?
- This company does lens printing. The lenses are made of UV resins - this is done with stereolithography.
It appears that only in the 21st century have serious attempts been made at selective laser sintering of ceramic or glass materials. This is a young field of full potential. For example ceramic molds can be centered and they can be used for metal casting. This also ties into oses Meg casting method where a ceramic mold can be used for depositing metal right from a MIG welder. This provides amazing potential for a complex 3D printing of metal Parts using basic techniques such as a MIG welder. This can be done with low-power lasers on the order of 10 watts. This is similar to the basic d3d laser cutter proposed for ose.
See for example this paper on laser sintering of ceramics. 
- Plastic 3D printing with decently clear results on PC, PET, and Amphora filaments -