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Zac's Bowie Mk. IV by DaveLuck Zac's Bowie Mk. IV by DaveLuck
This is the fourth iteration of the Zac "~foundry-wolf" Bowie Knife, the Mark IV.

The third iteration of the design has not been shown but featured a set of bolsters for added strength (which were retained in the Mark IV) with the Mark II's mid-lined handle and full tang. The blade profile remains relatively unchanged except for increasing the length of the ricasso a slight bit, but otherwise is identical in terms of having a clip profile with a straight edge and wide fuller, resembling an oversized Buck 119 Hunter or a KA-BAR knife, two enduring American classics. Like the 119 it also features a hollow ground blade for better sharpenability and a much better cutting edge.

Now this is the fourth iteration. I learned a couple things when I designed the South Texas Stampede Giant Bowie Knife, which is shown in the last two renderings. I'd applied a couple things I'd learned from making the Zac Bowie to it, now I decided to go the other direction and apply a couple things I'd learned from making the South Texas Stampede Giant Bowie knife to the Zac Bowie, one of which was the use of more complex parametric solids and faces. I did a much simpler version of that in the South Texas Stampede, but now I've taken it a bit further.

The Zac Bowie Mk IV has been the first knife I've designed to have a true complex handle with parametrically modelled finger grooves. In addition, I did the same to the horn on the pommel. As with the South Texas Stampede, the tang is a solid bar that terminates in a solid inch-diameter, half-inch tall rivet for extra strength.

I specified AISI 5160 OQT 700 (Oil Quenched, Tempered) Chromium Steel for better performance as a blade than the earlier versions which used O1 Tool Steel along with cast 6061-T6 Aluminum Alloy for the furniture along with a black linen-impregnated West System LM-105 thermosetting resin handle scale, similar to the construction of the other knives.

The whole knife, with its thirteen inch heavy profile blade, minus its sheath weighs (according to the computer calculations, using an epoxy handle and aluminum hardware) around 1.65 lbs, which is a little less than half the weight of the South Texas Stampede Giant Bowie, and has much better balance and handling characteristics than its larger cousin, which is depicted in the last two renderings, above, with its brass hardware.


Fully dimensioned engineering drawings may be released for public viewing depending on circumstance and my own schedule permitting.
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Submitted on
March 6, 2011
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