Keeping cutters used in power tools clean is very important. When cutters have a heavy buildup of oils and resins they cut harder, run hotter, and dull quicker. So for my router bits, saw blades and drills I have found common household amonia works as good as anything I have tried. It is readily available and cheap. Usually I let the cutter soak over night and a light brushing cleans off whatever remains.
I know the question that is coming and the answer is no, amonia does not harm the braze that holds the carbide onto the body of the tools. In the decades that I have been using amonia to clean my cutters I have not seen any signs of the braze deteriorating. Amonia works great for cleaning cutters and is a lot cheaper than the specialty cleaners made for this purpose.
As always thanks for stopping by and please feel free to leave a comment.