SOLD - PSF-27 Tactical/Utility

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Jan 1, 2011
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I’ll call this a hybrid tactical knife. It has some good features if a tactical knife like grippy machined handles, an exposed tang, skeletonized underneath the scales for weight reduction; but it has reasonably thin geometry so it actually cuts well.

Price: $165 PayPal, shipped USPS, in the US.

Specs:

.187” thick, about 4.5” blade, 9.5” overall length, 7.05 oz.

PSF-27 - Austinized at 1875 for 35 minutes, plate quenched, then directly into a “below sub zero” alcohol bath at -175f for 1 hour, 400 temper 2 hrs x 2, 62 hrc.

Edge established with a 200 grit CBN wheel cooled with machining coolant, then a 1000 grit CBN wheel, also with coolant, then stropped with white compound. You can easily add a micro bevel or thicken it up if you need a thicker edge. .01” edge prior to sharpening, approximately .02” behind the edge after sharpening.

Blade is hand sanded to 400 grit, then is acid tumbled.

Scales are green canvas micarta. They are attached using stainless torx screws and threaded stainless standoffs.

Sheath is a basic, green kydex with good retention. Sheath screw holes are spaced 1.5” for tek-lok compatibility, but not sold with one.

Some photos:


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Last edited:
The PSF 27 blades in this batch came out at right about 62 hrc. The D2 were about 61.5. This is off an old Ames Rockwell tester so it is hard to read small differences with the coarse scale it uses.

I went with the heat treat parameters from Larrins book on these. Seems to have worked pretty good.
 
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