quality

I want to drip a quadrocopter for work. What would be a good quality and could stay longer in work. I found a couple of options, [Mod: Removed link to "Best Advisor" website, because it looked too much like spam]/quadcopters but I don’t know what it’s better to pay attention to.

I wasn't sure which area to post this in but ... I just visited a local Dollar Tree for the first time and bought several sheets of white and black foamboard. I had to really sort through many sheets to find some that were not badly warped. I couldn't find any that were ideal and the 2 black...