I want to share few details,
- Photographic emulsions, films , tissues can record 5000 lines per milimeter.
Gelatin can be hardened to the level where gelatin impresses on thick lead plate with several tons of force and transfer its relief in three dimensions .
Prepress houses can print computer drawings without a step or corner with full curve.
Ultraviolet light source can print these curvelinear black and white films on to gelatin emulsion with utmost precision.
Ultraviolet light can be supplied by LEDs.
Light sensitive emulsion can be manufactured by non toxic , enviromentally friendly sensitizers. These are cheap and widely available at west and east.
If you need a gear in specific size , you can use above system and gelatin parts.
IF YOU want to print three dimensional parts , you can focus a uv led with the help of lens and expose the slow speed VERY THICK gelatin in three dimension INTERNALLY. Unexposed gelatin can be cleared with warm water. And than you harden the part with a solution.
I think this is a recipe which is lot precise than stereolithography and stronger and cheaper. You dont need to buy 250 dollar per liter rapid prototyping photopolymer. And they strech more than the gelatin
Istanbul
