Main Discussion Area > Bows
How far, how fast?
StickMark:
35 pounds
Set: 1.25"; 0.75"
I underbuilt.
And I think it just was a slightly weak piece
WhistlingBadger:
--- Quote from: sleek on July 01, 2024, 09:14:50 pm ---
Example:
Wood type: Balsa
Nock to nock 62 inches
8 inch handle
6 inch stiff tips
1.5 inches wide at the fade for 3 inches past the fade
1.25 inches wide at 4 inches past the fade
Even taper to .5 inches wide 18 inches from fade
6 inch Stiff tips after 18 inches
--- End quote ---
Thanks for this offer, Sleek!! I can't take you up on it as I don't have any self-bows in the pipeline at the moment--I'm experimenting with sinew and dogbane backings on all my current projects. But now I feel this weird emotional need for someone to build a 62", balsa wood bow with an 8" handle and 6" levers...
sleek:
--- Quote from: StickMark on July 03, 2024, 11:06:30 am ---35 pounds
Set: 1.25"; 0.75"
I underbuilt.
And I think it just was a slightly weak piece
--- End quote ---
If you drop the 23% of white oaks range, 23% of 45 pounds is 34 pounds. White oak has such a huge range from essentially a rubber tree all the way to stout as osage, it would require a test of that wood to know what to expect. Also did you heat treat the bow? White woods soak moisture like a sponge and moisture content in any bow will cause set. If you haven't heat treated it, perhaps try that and let me know if that makes the difference?
Like I said, this is a learning experience and I'd not considered that a single species would vary over 60% within its own species. For example, is density ranges from .55 to .83, a 66% difference.
StickMark:
Heat treated the heck out of it.
But, this build i attempted to try the tracing method. Outlining on paper. (1.25 set is on bottom limb. I string it w step through method.)
I went too ⁷far with sanding, those dreaded adjustments that i do at the end; your observation of underbuilding comes in play here, as leaving more wood to handle the final adjustments would have given me 43, 45 #.
I have a piece from same board, shorter by 8 ".
I am going to finish it today, but leave it much "stouter" in build: semi bendy handle, but wider. Will heat treat through out build, and get back w results.
sleek:
--- Quote from: StickMark on July 03, 2024, 02:30:55 pm ---Heat treated the heck out of it.
But, this build i attempted to try the tracing method. Outlining on paper. (1.25 set is on bottom limb. I string it w step through method.)
I went too ⁷far with sanding, those dreaded adjustments that i do at the end; your observation of underbuilding comes in play here, as leaving more wood to handle the final adjustments would have given me 43, 45 #.
I have a piece from same board, shorter by 8 ".
I am going to finish it today, but leave it much "stouter" in build: semi bendy handle, but wider. Will heat treat through out build, and get back w results.
--- End quote ---
How a bow is handled over its life will case set I can't account for, such as the step through method over stressing the lower limb like you mentioned. This method I'm using is good for a fresh dry bow, that won't take set under normal conditions.
Your next bow being 8 " shorter will stress it more, You will need more width through more of the bow to compensate
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