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2. Lift-off (microtechnology) - Wikipedia

   en.wikipedia.org/wiki/Lift-off_(microtechnology)

   Lift-off is applied in cases where a direct etching of structural material would have undesirable effects on the layer below. Lift-off is a cheap alternative to etching in a research context, which permits a slower turn-around time. Finally, lifting off a material is an option if there is no access to an etching tool with the appropriate gases.

3. Burin (lithic flake) - Wikipedia

   en.wikipedia.org/wiki/Burin_(lithic_flake)

   Burin from the Upper Paleolithic (Gravettian) (ca. 29,000–22,000 BP). In archaeology and the field of lithic reduction, a burin / ˈ b juː r ɪ n / (from the French burin, meaning "cold chisel" or modern engraving burin) is a type of stone tool, a handheld lithic flake with a chisel-like edge which prehistoric humans used for carving or finishing wood or bone tools or weapons, and sometimes ...

4. Rotary tool - Wikipedia

   en.wikipedia.org/wiki/Rotary_tool

   A pneumatic die grinder with a right-angle head. A cordless battery-powered rotary tool used for light tasks. A die grinder or rotary tool is a handheld power tool and multitool used for grinding, sanding, honing, polishing, or machining material (typically metal, but also plastic or wood).

5. CNC router - Wikipedia

   en.wikipedia.org/wiki/CNC_router

   A stone CNC router is a type of CNC router machine designed for marble, granite, artificial stone, tombstone, ceramic tiles, glass machining, polishing for arts and crafts, etc. Wood, metal and stone require different "bits" or "inserts". There is bit call as diamond tools with different diameter 4mm, 6mm, 8mm mainly used.

6. Ground stone - Wikipedia

   en.wikipedia.org/wiki/Ground_stone

   In archaeology, ground stone is a category of stone tool formed by the grinding of a coarse-grained tool stone, either purposely or incidentally. Ground stone tools are usually made of basalt , rhyolite , granite , or other cryptocrystalline and igneous stones whose coarse structure makes them ideal for grinding other materials, including ...

7. Chemical milling - Wikipedia

   en.wikipedia.org/wiki/Chemical_milling

   Chemical milling or industrial etching is the subtractive manufacturing process of using baths of temperature-regulated etching chemicals to remove material to create an object with the desired shape. [1] [2] Other names for chemical etching include photo etching, chemical etching, photo chemical etching and photochemical machining. It is ...