Selfbow

With reſpect to a bow being made round, we muſt recollect, that [Roger] Aſcham ſpeaks of a ſelf'''-bow; which, it ſeems, was made round as well as the back as in the belly: but back'd-bows have almoſt always a flat back, to prevent their caſting.

Many Archers use a piece of waxed cloth, which is of great utility, as it not only gives the Bow a polish, but is a preventative against damps penetrating; this precaution however, is not so much required for self Bows, as backed ones. Self Bows are made of one piece of wood only, and that is generally of yew, but the long known difficulty of procuring good English yew, has compelled Bow makers of late years, to resort to various other woods, all containing great spring, but little pliability; the deficiency of the latter is amply supplied by the addition of a slip of ash, or some other tough wood glued to them; the toughness of the one combined to the elasticity of the other, both acting in conjunction, make capital Bows, and these it is that are called back'd Bows.

[A] backed bow does not exceed a self bow, except that it is thought by some to be pleasanter and easier to draw, especially in the last inch, and of quicker cast.

I once made a beautiful self-bow from a large branch of yew, which was amputated, after two valuable coach-horses had been poisoned by feeding on its leaves.

Modern bows are of two kinds, viz. self bows and backed bows. The self bow is composed of only one kind of wood; but the backed bow is composed of two kinds of wood, both the full length of the bow, carefully joined together.

The self-bow is the real old Engish weapon; the one with which the many mighty deeds that rendered this country renowned in times gone by were performed; […] Of the woods for self-bows, Yew beyond all question carries off the palm; other woods have been, and still are, in use, such as lance, Cocus, Washaba, Rose, Snake, and some others; but they may be summarily dismissed with the remark, that self-bows made of these woods are all, without exception radically bad, being heavy in hand, apt to jar, comparatively dull in cast, and very liable to chrysal and break, and that no archer should use them so long as a self-yew or a good backed-bow is within his reach.

Bows were of several types. Most common was a selfbow (a bow made of a single piece of wood with no laminating materials) of springy wood tapering toward both ends and sometimes narrowed at the grip.

If the design of the weapon is moderate enough to be successful as an all wood selfbow then the addition of sinew and horn will probably result in a net loss of arrow performance.