I really like your grinder & your file blades. One concern to me is your base might need a little more mass. You might think of putting another upright as close to the front of the grinder as you can. I found in years as a blacksmith, welder & machinist that having the base of a tool be it an anvil, vice or what ever as solid as you can get it will make your job easier & more precise. Looks like you are going to put wheels on it, will you really have a need to move it? if not I wouldn't put wheels on it unless you have a good way to mount it to your shop floor.
Hey, it's all good. Great looking work. I am wanting to get a forge set back up with a 100Lb. Little Giant power hammer to forge blades & pattern welded stock. I have carpal tunnel & cubital tunnel problems so a power hammer is about my only way to get back into forging.

Dave "Slawman" Huffman