Matt,
Here is how I did my 605:
From a large chunk of wood that I had laying around....I used a bandsaw to cut out some scales about 1/4" x 2" x 4".
This was a crude bandsaw cut to simply rough out a few peices of wood. Then I sanded on side flat with a sheet of sandpaper on the workbench top. The flat side would then go against the liner. I sanded one end flat and square that would butt up against the bolster.
I fastened the bolsters to the liners and held the wood slabs in place....then carefully transferred the bolt holes to the slabs thru the liner with a sharp scribe. I drilled, then countersunk the slabs and fastened them on the liners with the bolts included. With the slabs bolted onto the liners with the bolsters, I hogged away the excess, untill the slabs just barely over hung the edges of the liners. With a rasp, I carefully shaped and contoured the slabs...still leaving a bit overhanging the edge of the liners. Then I assembled the complete knife...less clip and sanded the slabs to the final shape....yes, I scratched up the bolsters but as I went from rough to finer grits, the scrathes in the bolsters simply dissapperared into a satin, brushed look. I used a drum sander to clean the perimeter ...sanding the slabs away until I just touched the liners. I sanded the slabs and bolsters up thru 320 grit, then applied an oil finish to the wood. The next day, I rubbed in some min-wax, mounted the clip and put the knife in my pocket....done!
I don't think you need any special machinery or equipment. The only machinery that I used was a drill press to drill the slabs....mainly for depth control of the counter sink....but you don't need a drill press.... I didn't use a belt grinder or grinding disk, It can all be done with common hand tools (IMHO).
Matt, I say...go for it! If you run into a snag...jump over to the "shop talk" forum and you'll get more help than you asked for
Good luck and have fun with it,
Rob