As I told you (in §. 11. ¶. 1.) that the _Punches_ are to be made of several Thicknesses, for reasons there shewed; and that therefore the _Letter-Cutter_ makes _Wooden Patterns_ for his several Sizes of Thicknesses as well as Heights; so now I am come to the _Sinking_ of the _Punches_ into the _Matrices_, I must tell you again that the _Letter-Cutter_ or else the _Founder_, (either of which that _Sinks_ them; for sometimes it is a Task Incumbent on each of them) considers the Thicknesses of all the _Punches_ he has to _Sink_, though Heighth he need not consider in _Sinking_ the _Matrices_: For the _Matrices_, by reason of their length in _Copper_ upwards and downwards, have Substance enough and to spare, for the longest Letters to be _Sunk_ into them: Therefore I say, he only considers the several Thicknesses of all the _Punches_, and makes _Wooden Patterns_ for them, marking with a Pen and Inck the number of each size, on the _Pattern_ as before he did for the _Steel-Punches_: But the _Patterns_ he made for the _Steel-Punches_ will be too Thin for the _Copper Matrices_: Because the _Steel-Punches_ by _Sinking_ into the _Matrices_, stretch and force the Sides of the _Copper_ out, and sometimes crack them for want of Substance; and at other times carry or force the Substance of the _Matrice_ so low with their _Sholder_ if the _Letter_ be broad, that it creates a great Trouble to rub them _Flat_, (as it is called) because it is done upon the _Using-File_. Therefore he makes _Wooden Patterns_ for every of the former siz’d _Punches_, so thick or rather an n thicker at the least, then he made the _Wooden_ _Patterns_, that the _Steel-Punches_ were made to be _Forged_ by, that there may be Substance enough on each side the _Copper_ to bear the dilating that the sinking of the _Punch_ into it will make, because the _Counter-Puncht-Letters_ are Thicker by their _Stems_ and _Footing_ or _Topping_ than the _Counter-Punches_ made for them need be. Therefore (as before) for three sizes of _Punches_ to be _Counter-Puncht_, he made three several siz’d _Patterns_; so now for the several siz’d _Punches_ that are to be _Sunk_ into _Matrices_, he makes three several siz’d _Patterns_ of _Wood_ for the _Copper-Smith_ to draw out _Rods_ of _Copper_ of those several Sizes by, and each of them (as aforesaid) an n, and for the Thick _Letters_ an m (at least) Thicker than the _Patterns_ were made, for the _Steel-Punches_ to be Forged to a size by. In the Forging of these _Copper-Rods_, he instructs the _Copper-Smith_ to make Choice of the softest _Copper_ he can get, that the _Steel-Punches_ may run the less hazzard of breaking; and sometimes (if too soft Temper’d) battering their Stroaks. The _Rose Copper_ is commonly accounted the softest: But yet I have many times _Sunk Punches_ indifferently into every sort of _Copper_. Nay, even cast _Copper_, which is generally accounted the Hardest: Because _Copper_, as well (as some other Mettals) Hardens with Melting.