I did an SAK rehandle awhile back. I'm sure you have seen a pic of it in the pimp thread. So, I am by no means an expert. I haven't messed around with the toothpick, tweezers slots yet, just straight rehandle.
The most important thing I did was to drill a tiny hole through the old scales where the studs attach. I then am accurately able to mark the new hole locations on the wood, and get them drilled for depth. That makes fitting the new handles as you go much easier. Then of course, sandpaper and epoxy. Make sure your sanding of the flat of the handle is done uniformly, otherwise there will be hills and valleys, ripples, etc. and you will see them pop out when you get down to smooth.
I use a number of tools, such as a dremel with a sanding drum, tabletop belt or disc sander (watch your fingers ), or good old elbow grease.
Really nothing to it.
Good luck.
Glenn