This lead me to start to think about how I can get more horses out of a single rasp. So I did some research and read about two methods on how to sharpen a rasp. First method was to sharpen it on a buffing wheel with a buffing compound. The other method was to immerse the rasp in muriatic acid for 24 hours. As I do not have buffing wheel I figured I’d give the acid bath a try.
This was my first attempt so please do not go by what I have done since this was an expirement. Acid is extremely dangerous so please if you are going to try any of this, do it at your own risk and use the proper personal protective gear.
Items needed 1 gallon of muriatic acid
Sand or small rock
A container to hold the acid and rasp
Warm soap and water
Chemical resistant gloves.
Here is the process I used
I cut the top off a tall 1.5 liter Poland Springs water bottle. I placed the bottle in a small bucket and surrounded it with sand. I did this just to stabilize it. I then poured enough muriatic acid so it would cover almost all the rasp. The rasp was then inserted into the acid. I let it soak for about 24 hours. Once this was done I washed the rasp off with warm soap and water. Then sprayed a good about of WD-40 on it to keep it from rusting.
I waited till the next morning to give a shot. The rasp was performing again! Nice clean cuts and shavings were flying around. I would not say it was as sharp as new but I would think I will get another week or two out of it. Well Well worth the time and little money! Great way for a farrier or barefoot trimmer to bring life back to a few of their older dull hoof rasps.