After watching another couple of Paul Sellers videos, i watched the short poor mans router one, and found it quite quirky and as one of my projects will have stopped dadoes i thought that could be less hassle that setting up my power router, then i thought rather than using a piece of wood why no use a honing guide, i don't have one as i freehand sharpen but for a few quid you could have a fully adjustable simple device for cleaning out dadoes and grooves etc,