We do not recomend washing in a dishwasher for 2 reasons. First the stencils tend to curl up after washing. Second during the stress testing after the 7 back to back washing some damage was noted on the smaller features.

 

 

Take the stencil and cover with a cloth. take a clothes iron and warm the stencil. take care not to melt the stencil. place some weight on top of stencil and wait 2 to 4 hours. if the curl is still present repete.

 

 

Plastic polish will help remove scratches. plastic polish can be found at hardware stores and  type of plastic polish can be found at an auto part store (headlight cleaner this is a plastic polish for your headlights).