These are _Iron Wyers_ about a _Long-Primmer_ thick: Their Shape you may see in the Figure: They are so fastned into the Wood of the _Mold_, that they may not hinder the _Ladle_ hitting the _Mouth_. Their Office is to pick and draw with their Points the _Break_ and _Letter_ out of the _Mold_ when they may chance to stick. ¶. 11. _Of the_ Woods _of the_ Mold. All the _Iron_ Work aforesaid of the _Mold_ is fitted and fastned on two Woods, _viz._ each half one, and each Wood about an Inch thick, and of the shape of each respective _Bottom-Plate_. The Wood hath all its Sides except the hind-side, about a _Pica_ longer than the _Bottom-Plate_; but the hind-side lies even with the _Bottom-Plate_. The _Bottom-Plate_, as afore was said in ¶. 2. of this §. hath an _Iron Pin_ on its under-side, about half an Inch long, with a _Male-screw_ on its end, which _Pin_ being let fit into an Hole in the Wood does by a _Nut_ with a _Female-screw_ in it draw, all the _Iron_ Work close and fast to the Wood. But because the Wood is an Inch thick, and the _Pin_ in the _Bottom-Plate_ but half an Inch long, therefore the outer or under-side of the Wood (as posited in the Figure) hath a wide round Hole made in it flat at the Bottom, to reach within an _English_, or a _Great Primmer_ of the upper-side of the Wood. This round Hole is wide enough to receive the _Nut_ with the _Female-screw_ in it; and the _Pin_ being now long enough to receive the _Female-screw_ at the wide Hole, the _Female-screw_ may with _round nosed Plyers_ be turned about the _Male-screw_ on the _Pin_ aforesaid, till it draw all the _Iron_ Work close to the Wood. The Wood behind on the upper half is cut away as the _Bottom-Plate_ of that half is; and into the thickness of the Wood, close by the right and left-hand side of this _Notch_ is a small square _Wyer-staple_ driven, which we may call the _Matrice-Check_; for its Office is only to keep the _Shanck_ of the _Matrice_ from flying out of this _Notch_ of the _Mold_ when the _Caster_ is at Work. And the _Nuts_ and _Screws_ of the _Carriage_ and _Mouth-piece_, &c. that lie under the _Bottom-Plate_, are with small _Chissels_ let into the upper-side of the Wood, that the _Bottom-plates_ may lie flat on it. Sect. XVI. _Of justifying the_ Mold. Although the _Mold_ be now made; nay, very well and Workman-like made, yet is it not imagin’d to be fit to go to work withal; as well because it will doubtless Rag (as _Founders_ call it; for which Explanation see the Table) as because the Body, Thickness, Straightness, and length of the _Shanck_ must be finisht with such great Nicety, that without several Proofs and Tryings, it cannot be expected to be perfectly true.