an embodiment of the invention is described with reference to the figures using reference designations as shown in the figures referring to the figures a photoceram material sample 10 is moved using a stepper motor 11 relative to a pulsed ultraviolet uv laser 12 radiating pulsed laser light 13 through a microscope object lens 14 providing refracted light 15 that is focused into a focused beam 16 having a focal region 18 within the sample 10 alternatively the photoceram material sample 10 can remain fixed and the focused laser beam 16 can be made to move the outcome is the same the sample material is preferably foturan but other photostructurable photocerams may be used the focal region 18 has a beam waist that partially defines a focal depth into the sample 10 the sample 10 is shown having a exposed focal volumetric region 20 through which the focal region 18 had been previously stepped the volumetric region 20 defines a focal volume of the material that has received a critical dose of illumination of the pulse laser light the sample 10 comprising the exposed volumetric region 20 is then heated using a heater 22 and a programmed heating and cooling protocol a hydrofluoric hf acid source 24 delivers a hf acid solution through an acid conduit 26 the hf acid source 24 can transport the acid to the.