Do some of you guys use computer programs to draw knife designs? My hand drawing has never been very good and I like using computer programs for some of the features like copying and pasting etc. I got using LayOut that comes with SketchUp on a couple of free trials and I really like it, but it is expensive and I can't really afford it. Are there any other free options out there? Don't really need 3D modelling, basically just digital graph paper.