Awhile back someone posted their tecnique on sharpening the pathfinder tips, involved using the tip of a marker somehow, can't remember for sure.
Anyway, I just tried something that worked really really well. I suspect it will work for any chisel style chip that has a curve to it.
For the pathfinder, I took a sheet of 600 grit sandpaper, a section of double stick tape, and a yellow highlighter marker. Color probably doesn't matter, but it's the one I had.
The trick is to find a cylindrical object whose's circumference matches up well to the curve of the tip. The highlighter I have is made by stanford, but really anything else that does what I described will work.
I took a section of the double stick tape, about a 1.5" x 2" rectangle, and put in on the back side of the sandpaper, near a corner to conserve the bulk of the sheet, cause well, I'm frugal (shut up Todd)
I then cut the sandpaper around the tape border, and removed the covering to expose the other sticky side. I placed this on my desk, sticky side up, and carefully placed the marker on it lengthwise, then rolled back and forth to stick it to it.
Once ready, I simply ran the marker back and forth several times in each of the three concave cutouts of the pathfinder tip. I had noticed several burs and the tip was a bit dull with a burr off to one side. Came from Rocket like this. I was gonna remove the blades as a safety factor, but I remembered they were Rockets so I was worrying about nothing and simply deployed them and let them swing out of the way.
After I was done, the tip was very sharp needle sharp. The three cutting edges were also plenty sharp for the intended purpose, much improved over stock condition.
5 more to go... Try it, you'll like it
Best thing is I scrounged up all the materials so I didn't have to spend a penny
Try this to sharpen Rocket Pathfinder points
