spray paint (gloss white, reflective, and semi-gloss or flat black)
newspaper for masking
TechShop (for making template)
Step 1: Make a template
I used Corel Draw to sketch a 4" tall set of house numbers. I selected a font I liked, placed the numbers, then used Corel's convert to curves feature to get the outline of the numbers.
I originally cut them out in heavy paper, but decided I wanted a truly reusable set, as the numbers fade on the curb after a couple of years. Therefore I used a piece of scrap acrylic for the final version.