I am new to this site and had a question about these files. are these created with a cad software or is there a web site i could go to find more. Right now I am trying to use a raster to vector software so i can create a cad model of it. then i take my model file and laser cut it out of steel. But some times the the conversion doesn't always work out. have tried lots of different raster to vector softwares and haven't found one i like the best yet. Any info would be greatly appreciated.