Asymmetrical bow- designs Vol.3- maruki- yumi made of juniper

Maybe you remember this stave:

 

juniper stave spring 2010

 

I have cut it last spring, just when winter has gone, look at: harvesting wood

In the meantime it has become a maruki- style bow, a yumi made of a single piece of wood, the fore- runner of the delicious to do yumi made of bamboo. It measures 75″ in length, 11/4″ in width at its widest point at the handle.

 

the juniper maruki- at 26",48lbs

 

There are still some details to work, tillering it at 30″, about 55lbs, sanding, polishing, coating with walnut- oil.

 

juniper- maruki braced- slight recurves

 

The recurves are steam- bent, the s-shaped natural growing was at first heat- treated, but without any appreciable succes, so steam bending was required. The bow insisted on keeping a bit of its natural shape, I agreed, the string is running across the handle. Juniper is quite delicious to heat- treat or to steam bend, cause of its content of essential oils. The workshop smells great when working juniper. Store the splinters as a remedy against clothes moths.

The ratio of the length of the upper limb to the length of the lower limb is 1.61- the Golden Ratio.

 

sideview- unstrung

 

 

belly view- s- shape, the string is crossing the handle at the left side, where the arrow is shot off

 

The string is made of linen, the slight recurves are wrapped with thin  buckskin, the handle is wrapped with a thicker buckskin, buckskin is naturally tanned with fat.

Eventhough I prefer short bows, I like this style of “primitive” yumi, due to its asymmetry it makes you feel to shoot a somewhat shorter bow than it really is. For to use it to full capacity, I guess I´ve to take some kyudo lessons.

This bow makes me feel very happy: juniper is one of my favourite plants, but I´ve never succeded in making a juniper- selfbow, they´ve all broken. I succeded in making shorter bows of juniper by backing  them with sinew, juniper is very compression strong but tension weak. But this stave is completely knot- free with very thin growthrings- perfect. Done as long selfbow, it is a durable character bow.


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