Scraper for Plastic Razor Blades

I remixed [SSSR_SH's design](https://www.thingiverse.com/thing:6309733) to better fit my plastic razor blades. For whatever reason, the original fit poorly - the center nub held onto the blade securely, but the nubs on the side were too far center. This caused the entire blade to curve inside the scraper. The width on the original was also less than that of the blade itself, which I thought was odd. Maybe there is more than one style of plastic blade. I eliminated the hole from the original and rounded the end to make it more comfortable to hold, especially when you need to chisel a stubborn support from a print. I also changed the length of the scraper, which wrecked the logo on the original, so in its place I added some honeycomb shaped holes instead to use slightly less material, and I added what is meant to be a grippy series of lines on the reverse side and also on both edges.

This fits well in [the pegboard scraper holder that I remixed](https://www.thingiverse.com/thing:733406