Sharp tools can save a lot of physical effort, and for big projects that can equal time and energy saved, more than making up for the time it takes to sharpen your key tools. There are lots of sharpening methods out there, here is one that works well.
Pay attention to the sharpening stones and diamond plate, you will want to add these to your tool list if you are a hand tool woodworker.
This video isn’t too long and gets the point across. When is the last time you sharpened your tools?