Here's comparison picture of the new knife, re-ground by REK, compared to my current Survival Knife collection, the result of a lot of paring down from testing (the edge on the new knife is still untested):
I also came up with a rough outline of the design I mentioned earlier as to what I think would be an "ideal" Survival Knife (the mechanism depicted on the pommel represents the fixation for the slingshot):
The saw would be similar to the one on the Aitor Jungle King I, which I know is effective, but mounted on a full vertical taper flat grind. The fully curved edge would have the benefit of making a thin 0.020" edge a lot more resilient to side loads, boosting the actual edge-holding: This is because the thin edge being less rigidly supported than a straight edge, it would more readily diffuse the side loads away from the apex, the whole blade bending rather than concentrating the force close to the weaker apex. This is why it is usually much harder to cause chips in the belly rather than on the straights: Always keep any prying to the belly...
For this and other reasons I never understood recurves, where the concave is the opposite of this design, and has only downsides...
While doing this I found two old photos of what my collection used to be two years ago...: Note that the Randall Model 12 below has a similar handle shape to my drawing, a shape I did myself with a grinder out of a "Commando handle" (except for the pommel ground down by REK):
Of the knives in these two pictures above, the only one I still have is the Randall Model 14, this solely because it really saved the day in an actual emergency...: This is where I learned to pry with the curved edge portion, not the straight...
The Model 14's deep finger grooves fit my hand to perfection, and this is probably why it is among the worst choppers in the history of the world... If you try to chop at a finger-sized twig with this, I swear your fingers will feel like glass that will shatter first... Fortunately the Model 18's round handle had none of these issues, and could chop about twice as hard: Sadly, being twice the chopper of the Model 14 still means the 18 is a terrible chopper...
Of all these knives (plus a BK-9 that vibrated painfully), only the Model 12 had absolutely nothing wrong with it: The only reason I did not keep it is because its brown leather sheath soaked in water like a sponge in minutes...: The sheath was still useable, but did not inspire confidence (it is worth noting that black Randall sheaths are totally waterproof in comparison to the brown ones)... Because of this sheath issue the Model 12 had migrated into a Gerber BMF sheath, and in turn this great BMF sheath was adapted to the $180 Oryx Raider II, ousting the CAN $1200 Randall, which still fetched a good price without a sheath... By my testing the Oryx is comparable in performance to the Model 12, but the edge and hollow grind is slightly sharper and more precisely ground (it was made in Japan): A 9.8" blade of course beats 8.9"... The weight of the Oryx is something I got used to, but be warned it is staggering...
The RJ Martin was an unbeatably functional design, but its S30V edge would always micro-roll instantly on Maple, even after a year of cold sharpening, so that was another example of what could go wrong... The SMIII Trailmaster had a handle so thin it would not transmit force well, bucking in the hand instead, and the convex edge was just way too fat to perform (for chopping you want the edge thin and the handle fat, not the other way around!)...
One absolutely excellent knife worth mentioning in these photos is the peculiar 7.8" blade (with a gigantic 6" handle) Al Mar "Special Warfare": The huge wood handle, thin hollow ground edge and outstanding edge holding was perfect to make it perform like a 9.5" knife (incredibly, it sometimes out-chopped narrowly the much heavier Trailmaster, showing just how important the handle is, even compared to blade length...). The only reason I sold it is it was very, very asymmetrically ground, with a fragile point way, way off center: I have noted this before on other truly vintage 80-90s US market Al Mars, as this one was, so it is worth pointing out (I saw a much more recently made Asian market "Special Warfare", from the same factory, and it was straight and much better finished)...
Anyway, this was a fun look back...
Gaston