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Primitive Skills / Re: A simple leather project
« Last post by bjrogg on December 10, 2025, 01:11:51 pm »Dowel inside top of flap
Recent Posts
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Primitive Skills / Re: A simple leather project
« Last post by bjrogg on December 10, 2025, 01:10:46 pm »Top of flap
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Primitive Skills / Re: A simple leather project
« Last post by bjrogg on December 10, 2025, 01:07:18 pm »Then I stitched a dowel in top of flap and attached the Flemish twisted strap. Again with two colors.
Bjrogg
Bjrogg
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Primitive Skills / Re: A simple leather project
« Last post by bjrogg on December 10, 2025, 01:03:10 pm »I cut lace from around the outside of my leather. I use two different colors. A cream colored hide and a tan colored hide.
I stitch the area around the the knife and to each side. First in the cream color. Then I come back and stitch between the cream color stitches with the tan lace.
Bjrogg
I stitch the area around the the knife and to each side. First in the cream color. Then I come back and stitch between the cream color stitches with the tan lace.
Bjrogg
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Primitive Skills / A simple leather project
« Last post by bjrogg on December 10, 2025, 12:57:24 pm »I’m not very good with leather work.
I’m often afraid to cut up my leather and waste it on something that I don’t have the ability to create.
I found it easier to play around with my scrap pieces.
I find two scrap pieces and staple them together. The staples hold everything in place while I lace it together. One piece is longer than the other. The longer one is the backside and flap. The shorter one is the front side and where the blade will be carried.
Bjrogg
I’m often afraid to cut up my leather and waste it on something that I don’t have the ability to create.
I found it easier to play around with my scrap pieces.
I find two scrap pieces and staple them together. The staples hold everything in place while I lace it together. One piece is longer than the other. The longer one is the backside and flap. The shorter one is the front side and where the blade will be carried.
Bjrogg
26
Bows / Re: Snake bow
« Last post by Selfbowman on December 10, 2025, 12:31:46 pm »Guys I agree it’s a candidate for bow of the month but it was a bow blank from JiM Hammer and I won’t be doing the wrap on the handle. I will probably enter the black locust though. May not be as sexy but a faster bow at 10 grains per pound. And I am no photographer!
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Bows / Re: The best shape for a reflexed bow?
« Last post by Selfbowman on December 10, 2025, 12:24:01 pm »The design I’ve been using for years is closest to the third design. The speeds are close to what I get most of the time. I have had upward to 186 ft per second. Not often though. Interesting topic thanks for sharing. Notice the farther the tips get in front of the back of the bow the more speed. That’s with the deflex in the handle to help the stress on the inner limb.
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Bows / Re: Snake bow
« Last post by bjrogg on December 10, 2025, 12:23:35 pm »Thats a really nice looking bow. Perfect amount of wiggle to it.
Gotta agree. Nice wiggle. Should be a nice bow. Pleasant to the eyes too.
Bjrogg
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Bows / Re: The best shape for a reflexed bow?
« Last post by Tuomo on December 10, 2025, 12:06:09 pm »Simk: How do you optimize the front profile, and especially the tapers? The front profile is more of a practical problem, because in the model you can make it as narrow as you want, but in real life stability becomes a real concern. That’s the main reason I wanted to use the same front profile for every bow model.
As for the taper rate, I optimized it with strain distribution in mind. What would be a better approach? The 0.008 taper I used seemed to work well for every model.
Ryan: Yes, energy storage is mainly determined by the unbraced profile. That’s exactly what I wanted to examine, and of course the results of that difference also. All the “bows” had the same net reflex, yet they still behaved very differently.
As for the taper rate, I optimized it with strain distribution in mind. What would be a better approach? The 0.008 taper I used seemed to work well for every model.
Ryan: Yes, energy storage is mainly determined by the unbraced profile. That’s exactly what I wanted to examine, and of course the results of that difference also. All the “bows” had the same net reflex, yet they still behaved very differently.
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Bows / Re: The best shape for a reflexed bow?
« Last post by RyanY on December 10, 2025, 11:35:01 am »If we isolate the variables and assume that these bows are all evenly strained and 100% efficient then wouldn’t the difference come down to energy storage alone? I’m not sure what would make the difference just based on the unbraced profile. It’s hard to separate the real world effects that were used to making assumptions about such as strain, limb mass, hysteresis, limb vibration, etc.