The guide shown ($15 at woodworking stores) works for both chisel and plane blades ... the other side with 400- and 600-grit. The sharpening angle is determined by how far you extend the blade ...

File hatchets or axes used for cutting or felling wood at about a 25- to 30-degree angle on ... for the final sharpening step. Use a DIY Honing Guide to Sharpen Chisels and Planes There’s ...