3-D printers have progressed a lot in the past couple years, but still can’t rival the output of injection-molding machines without violating expensive, patented post-processing techniques.
Enthusiasts have been trying to smooth their printed parts for years by submerging them in acetone or brushing the liquid solvent on by hand — both of which led to unhealthy amounts of chemical exposure and less-than-impressive parts.
http://hz.aliexpress.com/store/1720204
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