Sinew- Backing Vol. 2- nothing new on the planet- applying a sinew backing

It is a  must to degrease the wood or the horn, don´t use some of these chemical killers, just use a solution of water and pure wooden ashes. Take care: this is a killer too, it´s a base, historically used for degreasing, use some working gloves.

Wether to apply a sinew-backing to a wooden bow or to a hornbow, to precoat with a thin solution of glue several times is an additional must. Otherwise the glue can´t penetrate deep enough the wood or horn, the glueline is not as stable as it could be.

The sinew- backing needs to be well organized: the workshop has to be well tempered, the glue has to be heated up to 140F or 60C, too much heat will destroy the glue. To less heat will leave the glue to tough.

A dish of lukewarm water has to be prepared for to soak the sinew- fibre bundles about 2 minutes.

The bow has to be fixed in a small vice.

The setting for a sinew- backing: f.l.t.r. dish for soaking the fibre bundles- bow- heated glue

The glue has to be kept to the right temperature with some tealights. The containers used for soaking the fibre- bundles and for the glue have to fit the length of the fibres.

1st: soaking the bundles in water for at least 1minute, when removing them press some water out of them
2nd: soaking the bundles in the glue
3rd: Applying the first bundle right at the handle

Go on applying bundles towards the tip of the first limb. Usually 1 bundle will cover about 1/2″ of the width of a bow´s limb. The bundles should be applied staggered for not to end up with a running through the width glue-line.

Flattening of a bundle on the bow´s back

The guy helping me this post to become true is Stefan, making a Hun- type style hornbow(asymmetrical). It´s his first sinew- backing. The sinew- backing just covers the v- splice with the siyahs.

The first layer is done!

Two additional layers will have to be applied. 2 – 3 layers of sinew- backing is enough, wether it is a wooden bow or a hornbow. Otherwise to much weight is added to the bow. Waiting time is beginning just right now. The elders have left a sinew- backed bow for 4-8 months alone. I don´t know why a lot of modern “primitive bowyers” are ignoring the fact that the so- called drying of a sinew- backing is in truth a polymerization. Polymerization needs its time!

“Time is a healer, where is the patient? “(T.S.Eliot)

Next volume is dealing with the tillering of a sinew- backed bow.


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Making bows of Green Wood- Vol.3- the rowan bow is ready

After having drawn the rowan bow up to 18″ I had to work the tiller a bit for an equal bending. I left it aside for about 7 weeks, last week I could finish the bow. Checking tiller again, sanding, cause of the beauty of the wood at the handle I didn´t wrap the handle with leather or some woolen cloth:

A very fine grain in the wood at the handle

I always try to leave the natural grown shape of a stave. Usually I end up with a very charming and comfortable handle.

Belly- view at the handle- I´m in love with the natural shape of this handle

The string is made of linen, two- coloured, some natural coloured strands mixed up with some yellow dyed strands.

The padding of string is done with red silk.

Backview of the bow

I left some tracks of the inner bark(cambium) at the back.

The bow at 4" brace- height

The tiller of the bow is looking uneven, but limbs are still twisted a bit, maybe I ´ll try to balance it. Depends on the performance of the bow.

The wood is dry now(12%), I picked up the stave 5 month ago.

In the meanwhile I´ve done some more bows of green wood, I really prefer to do wooden bows of green wood now. I could exercise much more control on the drying- process, the wood seems to be much less stressed by the drying, done the usual way causing splits and twists. Now you´ll always find some preworked green staves fixed at square timbers.

Green wood seems to respond way better to a heat- treatment and could be pre- shaped by just fixing it near to the final shape at a square timber for some weeks.

Bows made of green wood perform as well as bows made of 2 or more years air- dried staves!

I´ll shot the bow for performance this weekend and will update you soon.